feat: ui update

frontend/src/AppRoutes/pageComponents.ts

@@ -323,3 +323,17 @@ export const AIAssistantPage = Loadable(
 			/* webpackChunkName: "AI Assistant Page" */ 'pages/AIAssistantPage/AIAssistantPage'
 		),
 );
+
+export const LLMObservabilityModelPricingPage = Loadable(
+	() =>
+		import(
+			/* webpackChunkName: "LLM Observability Model Pricing Page" */ 'pages/LLMObservabilityModelPricing'
+		),
+);
+
+export const LLMObservabilityAttributeMappingPage = Loadable(
+	() =>
+		import(
+			/* webpackChunkName: "LLM Observability Attribute Mapping Page" */ 'pages/LLMObservabilityAttributeMapping'
+		),
+);

frontend/src/AppRoutes/routes.ts

@@ -22,6 +22,8 @@ import {
 	IntegrationsDetailsPage,
 	LicensePage,
 	ListAllALertsPage,
+	LLMObservabilityAttributeMappingPage,
+	LLMObservabilityModelPricingPage,
 	LiveLogs,
 	Login,
 	Logs,
@@ -507,6 +509,20 @@ const routes: AppRoutes[] = [
 		key: 'AI_ASSISTANT',
 		isPrivate: true,
 	},
+	{
+		path: ROUTES.LLM_OBSERVABILITY_MODEL_PRICING,
+		exact: true,
+		component: LLMObservabilityModelPricingPage,
+		key: 'LLM_OBSERVABILITY_MODEL_PRICING',
+		isPrivate: true,
+	},
+	{
+		path: ROUTES.LLM_OBSERVABILITY_ATTRIBUTE_MAPPING,
+		exact: true,
+		component: LLMObservabilityAttributeMappingPage,
+		key: 'LLM_OBSERVABILITY_ATTRIBUTE_MAPPING',
+		isPrivate: true,
+	},
 ];
 
 export const SUPPORT_ROUTE: AppRoutes = {

frontend/src/constants/env.ts

@@ -1,7 +1,9 @@
 export const ENVIRONMENT = {
-	baseURL:
-		process?.env?.FRONTEND_API_ENDPOINT ||
-		process?.env?.GITPOD_WORKSPACE_URL?.replace('://', '://8080-') ||
-		'',
-	wsURL: process?.env?.WEBSOCKET_API_ENDPOINT || '',
+	// baseURL:
+	// 	process?.env?.FRONTEND_API_ENDPOINT ||
+	// 	process?.env?.GITPOD_WORKSPACE_URL?.replace('://', '://8080-') ||
+	// 	'',
+	// wsURL: process?.env?.WEBSOCKET_API_ENDPOINT || '',
+	baseURL: 'https://app.us.staging.signoz.cloud',
+	wsURL: 'ws://app.us.staging.signoz.cloud',
 };

frontend/src/constants/routes.ts

@@ -91,6 +91,9 @@ const ROUTES = {
 	AI_ASSISTANT_BASE: '/ai-assistant',
 	AI_ASSISTANT_ICON_PREVIEW: '/ai-assistant-icon-preview',
 	MCP_SERVER: '/settings/mcp-server',
+	LLM_OBSERVABILITY_MODEL_PRICING: '/llm-observability/settings/model-pricing',
+	LLM_OBSERVABILITY_ATTRIBUTE_MAPPING:
+		'/llm-observability/settings/attribute-mapping',
 } as const;
 
 export default ROUTES;

frontend/src/container/LLMObservabilityAttributeMapping/AttributeMappingHeader.tsx

@@ -0,0 +1,52 @@
+import { Button } from '@signozhq/ui/button';
+
+interface AttributeMappingHeaderProps {
+	isDirty: boolean;
+	isSaving: boolean;
+	onDiscard: () => void;
+	onSave: () => void;
+}
+
+function AttributeMappingHeader({
+	isDirty,
+	isSaving,
+	onDiscard,
+	onSave,
+}: AttributeMappingHeaderProps): JSX.Element {
+	return (
+		<header className="page-header">
+			<div className="page-header__title">
+				<h1>Attribute Mapping</h1>
+				<p>Configure source-to-target attribute remapping for LLM traces</p>
+			</div>
+			<div className="page-header__actions">
+				{isDirty && (
+					<span className="page-header__unsaved" data-testid="unsaved-changes">
+						Unsaved changes
+					</span>
+				)}
+				<Button
+					variant="outlined"
+					color="secondary"
+					onClick={onDiscard}
+					disabled={!isDirty || isSaving}
+					testId="discard-changes-btn"
+				>
+					Discard
+				</Button>
+				<Button
+					variant="solid"
+					color="primary"
+					onClick={onSave}
+					loading={isSaving}
+					disabled={!isDirty || isSaving}
+					testId="save-changes-btn"
+				>
+					{isSaving ? 'Saving…' : 'Save changes'}
+				</Button>
+			</div>
+		</header>
+	);
+}
+
+export default AttributeMappingHeader;

frontend/src/container/LLMObservabilityAttributeMapping/ConditionKeyList.tsx

@@ -0,0 +1,90 @@
+import { Button } from '@signozhq/ui/button';
+import { Plus, X } from '@signozhq/icons';
+
+import KeySearchInput from './KeySearchInput';
+import { FieldContextValue } from './types';
+
+interface ConditionKeyListProps {
+	label: string;
+	labelHint?: string;
+	keys: string[];
+	placeholder: string;
+	addLabel: string;
+	testIdPrefix: string;
+	fieldContext: FieldContextValue;
+	onChange: (keys: string[]) => void;
+}
+
+// Editor for one list of condition keys (the group's span-attribute or
+// resource gating keys). Substring "contains" match, order irrelevant.
+function ConditionKeyList({
+	label,
+	labelHint,
+	keys,
+	placeholder,
+	addLabel,
+	testIdPrefix,
+	fieldContext,
+	onChange,
+}: ConditionKeyListProps): JSX.Element {
+	const updateKey = (index: number, value: string): void => {
+		onChange(keys.map((key, i) => (i === index ? value : key)));
+	};
+
+	const addKey = (): void => {
+		onChange([...keys, '']);
+	};
+
+	const removeKey = (index: number): void => {
+		onChange(keys.filter((_, i) => i !== index));
+	};
+
+	return (
+		<div className="group-form__field">
+			<span className="group-form__label">
+				{label}
+				{labelHint && <span className="group-form__label-hint"> {labelHint}</span>}
+			</span>
+
+			{keys.length > 0 && (
+				<div className="group-form__keys">
+					{keys.map((key, index) => (
+						// eslint-disable-next-line react/no-array-index-key
+						<div className="group-form__key" key={index}>
+							<KeySearchInput
+								className="group-form__key-input"
+								placeholder={placeholder}
+								value={key}
+								fieldContext={fieldContext}
+								onChange={(next): void => updateKey(index, next)}
+								testId={`${testIdPrefix}-${index}`}
+							/>
+							<Button
+								variant="ghost"
+								color="secondary"
+								size="icon"
+								aria-label="Remove key"
+								onClick={(): void => removeKey(index)}
+								testId={`${testIdPrefix}-remove-${index}`}
+							>
+								<X size={14} />
+							</Button>
+						</div>
+					))}
+				</div>
+			)}
+
+			<Button
+				variant="dashed"
+				color="secondary"
+				prefix={<Plus size={14} />}
+				onClick={addKey}
+				testId={`${testIdPrefix}-add`}
+			>
+				{addLabel}
+			</Button>
+		</div>
+	);
+}
+
+export default ConditionKeyList;

frontend/src/container/LLMObservabilityAttributeMapping/GroupFormDrawer.styles.scss

@@ -0,0 +1,76 @@
+.group-form {
+	display: flex;
+	flex-direction: column;
+	gap: 20px;
+	padding: 4px 0;
+
+	&__field {
+		display: flex;
+		flex-direction: column;
+		gap: 8px;
+
+		&--row {
+			flex-direction: row;
+			align-items: center;
+			justify-content: space-between;
+		}
+	}
+
+	&__label {
+		font-size: 12px;
+		font-weight: 600;
+		text-transform: uppercase;
+		letter-spacing: 0.04em;
+		color: var(--bg-vanilla-400);
+	}
+
+	&__label-hint {
+		font-weight: 400;
+		text-transform: none;
+		letter-spacing: normal;
+	}
+
+	&__hint {
+		font-size: 12px;
+		color: var(--bg-vanilla-400);
+	}
+
+	&__keys {
+		display: flex;
+		flex-direction: column;
+		gap: 8px;
+	}
+
+	&__key {
+		display: flex;
+		align-items: center;
+		gap: 6px;
+	}
+
+	&__key-input {
+		flex: 1;
+		font-family: 'Geist Mono', monospace;
+	}
+
+	&__error {
+		padding: 10px 12px;
+		border-radius: 4px;
+		background: rgba(229, 72, 77, 0.1);
+		color: var(--bg-cherry-400);
+		font-size: 13px;
+	}
+
+	&__footer {
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		width: 100%;
+		gap: 8px;
+	}
+
+	&__footer-actions {
+		display: flex;
+		gap: 8px;
+		margin-left: auto;
+	}
+}

frontend/src/container/LLMObservabilityAttributeMapping/GroupFormDrawer.tsx

@@ -0,0 +1,148 @@
+import { Button } from '@signozhq/ui/button';
+import { DrawerWrapper } from '@signozhq/ui/drawer';
+import { Input } from '@signozhq/ui/input';
+import { Switch } from '@signozhq/ui/switch';
+import { Trash2 } from '@signozhq/icons';
+
+import ConditionKeyList from './ConditionKeyList';
+import { FieldContext, GroupDraft, MapperDraftMode } from './types';
+import { isGroupDraftValid } from './utils';
+
+import './GroupFormDrawer.styles.scss';
+
+interface GroupFormDrawerProps {
+	isOpen: boolean;
+	mode: MapperDraftMode;
+	draft: GroupDraft;
+	setDraft: (next: GroupDraft) => void;
+	onClose: () => void;
+	onSave: () => void;
+	onDelete: () => void;
+	isSaving: boolean;
+	isDeleting: boolean;
+	saveError: string | null;
+}
+
+function GroupFormDrawer({
+	isOpen,
+	mode,
+	draft,
+	setDraft,
+	onClose,
+	onSave,
+	onDelete,
+	isSaving,
+	isDeleting,
+	saveError,
+}: GroupFormDrawerProps): JSX.Element {
+	const isEdit = mode === 'edit';
+	const isValid = isGroupDraftValid(draft);
+
+	return (
+		<DrawerWrapper
+			open={isOpen}
+			onOpenChange={(open): void => {
+				if (!open) {
+					onClose();
+				}
+			}}
+			title={isEdit ? 'Edit group' : 'New group'}
+			subTitle="A group gates which spans its mappings run on"
+			width="wide"
+			testId="group-form-drawer"
+			footer={
+				<div className="group-form__footer">
+					{isEdit && (
+						<Button
+							variant="ghost"
+							color="destructive"
+							prefix={<Trash2 size={14} />}
+							onClick={onDelete}
+							disabled={isDeleting}
+							testId="group-form-delete"
+						>
+							{isDeleting ? 'Deleting…' : 'Delete'}
+						</Button>
+					)}
+					<div className="group-form__footer-actions">
+						<Button
+							variant="ghost"
+							color="secondary"
+							onClick={onClose}
+							testId="group-form-cancel"
+						>
+							Cancel
+						</Button>
+						<Button
+							variant="solid"
+							color="primary"
+							onClick={onSave}
+							disabled={!isValid || isSaving}
+							testId="group-form-save"
+						>
+							{/* eslint-disable-next-line no-nested-ternary */}
+							{isSaving ? 'Saving…' : isEdit ? 'Save group' : 'Create group'}
+						</Button>
+					</div>
+				</div>
+			}
+		>
+			<div className="group-form">
+				<div className="group-form__field">
+					<span className="group-form__label">Group name</span>
+					<Input
+						placeholder="e.g. OpenAI gateway"
+						value={draft.name}
+						onChange={(event): void =>
+							setDraft({ ...draft, name: event.target.value })
+						}
+						testId="group-form-name"
+					/>
+				</div>
+
+				<div className="group-form__field group-form__field--row">
+					<span className="group-form__label">Enabled</span>
+					<Switch
+						value={draft.enabled}
+						onChange={(checked): void => setDraft({ ...draft, enabled: checked })}
+						testId="group-form-enabled"
+					/>
+				</div>
+
+				<ConditionKeyList
+					label="Condition · span attribute keys"
+					labelHint="· runs when a span attribute key contains any of these"
+					keys={draft.attributes}
+					placeholder="e.g. gen_ai."
+					addLabel="Add attribute key"
+					testIdPrefix="group-form-attribute"
+					fieldContext={FieldContext.attribute}
+					onChange={(attributes): void => setDraft({ ...draft, attributes })}
+				/>
+
+				<ConditionKeyList
+					label="Condition · resource keys"
+					labelHint="· or when a resource key contains any of these"
+					keys={draft.resource}
+					placeholder="e.g. service.name"
+					addLabel="Add resource key"
+					testIdPrefix="group-form-resource"
+					fieldContext={FieldContext.resource}
+					onChange={(resource): void => setDraft({ ...draft, resource })}
+				/>
+
+				<span className="group-form__hint">
+					Leave both empty to run this group on every span.
+				</span>
+
+				{saveError && (
+					<div className="group-form__error" role="alert">
+						{saveError}
+					</div>
+				)}
+			</div>
+		</DrawerWrapper>
+	);
+}
+
+export default GroupFormDrawer;

frontend/src/container/LLMObservabilityAttributeMapping/IndexBadge.tsx

@@ -0,0 +1,10 @@
+interface IndexBadgeProps {
+	index: number;
+}
+
+// Small positional badge mirroring the Pipelines list ordering chip.
+function IndexBadge({ index }: IndexBadgeProps): JSX.Element {
+	return <span className="am-index-badge">{index + 1}</span>;
+}
+
+export default IndexBadge;

frontend/src/container/LLMObservabilityAttributeMapping/KeySearchInput.styles.scss

@@ -0,0 +1,51 @@
+.key-search {
+	position: relative;
+	flex: 1;
+	min-width: 0;
+
+	&__dropdown {
+		position: absolute;
+		top: calc(100% + 4px);
+		left: 0;
+		z-index: 20;
+		min-width: 100%;
+		width: max-content;
+		max-width: 420px;
+		max-height: 240px;
+		overflow-x: hidden;
+		overflow-y: auto;
+		padding: 4px;
+		border: 1px solid var(--bg-slate-400, rgba(255, 255, 255, 0.12));
+		border-radius: 6px;
+		background: var(--bg-ink-400, #121317);
+		box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
+
+		&--empty {
+			padding: 8px 10px;
+			font-size: 12px;
+			color: var(--bg-vanilla-400);
+		}
+	}
+
+	&__option {
+		display: block;
+		width: 100%;
+		max-width: 100%;
+		padding: 6px 10px;
+		border: none;
+		border-radius: 3px;
+		background: transparent;
+		color: var(--bg-vanilla-100);
+		font-family: 'Geist Mono', monospace;
+		font-size: 12px;
+		text-align: left;
+		white-space: nowrap;
+		overflow: hidden;
+		text-overflow: ellipsis;
+		cursor: pointer;
+
+		&:hover {
+			background: var(--bg-slate-400, rgba(255, 255, 255, 0.08));
+		}
+	}
+}

frontend/src/container/LLMObservabilityAttributeMapping/KeySearchInput.tsx

@@ -0,0 +1,112 @@
+import { useMemo, useState } from 'react';
+import { Input } from '@signozhq/ui/input';
+import { useGetFieldsKeys } from 'api/generated/services/fields';
+import {
+	TelemetrytypesFieldContextDTO,
+	TelemetrytypesSignalDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import cx from 'classnames';
+import useDebounce from 'hooks/useDebounce';
+
+import { FieldContext, FieldContextValue } from './types';
+
+import './KeySearchInput.styles.scss';
+
+const SUGGESTION_LIMIT = 50;
+const DEBOUNCE_MS = 300;
+
+interface KeySearchInputProps {
+	value: string;
+	fieldContext: FieldContextValue;
+	placeholder?: string;
+	className?: string;
+	disabled?: boolean;
+	testId?: string;
+	onChange: (value: string) => void;
+}
+
+// Maps the mapper's attribute/resource context to the fields-endpoint context.
+function toFieldsContext(
+	context: FieldContextValue,
+): TelemetrytypesFieldContextDTO {
+	return context === FieldContext.resource
+		? TelemetrytypesFieldContextDTO.resource
+		: TelemetrytypesFieldContextDTO.attribute;
+}
+
+// Free-text input with span/resource key suggestions from /api/v1/fields/keys
+// (signal=traces). Typing keeps the custom value; suggestions are assistive.
+function KeySearchInput({
+	value,
+	fieldContext,
+	placeholder,
+	className,
+	disabled,
+	testId,
+	onChange,
+}: KeySearchInputProps): JSX.Element {
+	const [isOpen, setIsOpen] = useState(false);
+	const debouncedSearch = useDebounce(value, DEBOUNCE_MS);
+
+	const { data, isFetching } = useGetFieldsKeys(
+		{
+			signal: TelemetrytypesSignalDTO.traces,
+			fieldContext: toFieldsContext(fieldContext),
+			searchText: debouncedSearch,
+			limit: SUGGESTION_LIMIT,
+		},
+		{ query: { enabled: isOpen && !disabled, keepPreviousData: true } },
+	);
+
+	const suggestions = useMemo(() => {
+		const keys = data?.data?.keys ?? {};
+		return Object.keys(keys)
+			.filter((key) => key !== value)
+			.slice(0, SUGGESTION_LIMIT);
+	}, [data, value]);
+
+	return (
+		<div className={cx('key-search', className)}>
+			<Input
+				placeholder={placeholder}
+				value={value}
+				disabled={disabled}
+				autoComplete="off"
+				onChange={(event): void => {
+					onChange(event.target.value);
+					setIsOpen(true);
+				}}
+				onFocus={(): void => setIsOpen(true)}
+				onBlur={(): void => setIsOpen(false)}
+				testId={testId}
+			/>
+			{isOpen && suggestions.length > 0 && (
+				<div className="key-search__dropdown" data-testid={`${testId}-dropdown`}>
+					{suggestions.map((name) => (
+						<button
+							type="button"
+							key={name}
+							className="key-search__option"
+							// onMouseDown (not onClick) so selection runs before the input blur.
+							onMouseDown={(event): void => {
+								event.preventDefault();
+								onChange(name);
+								setIsOpen(false);
+							}}
+							data-testid={`${testId}-option-${name}`}
+						>
+							{name}
+						</button>
+					))}
+				</div>
+			)}
+			{isOpen && isFetching && suggestions.length === 0 && (
+				<div className="key-search__dropdown key-search__dropdown--empty">
+					Searching…
+				</div>
+			)}
+		</div>
+	);
+}
+
+export default KeySearchInput;

frontend/src/container/LLMObservabilityAttributeMapping/LLMObservabilityAttributeMapping.styles.scss

@@ -0,0 +1,183 @@
+.llm-observability-attribute-mapping {
+	padding: 24px;
+	display: flex;
+	flex-direction: column;
+	gap: 16px;
+
+	.page-header {
+		display: flex;
+		align-items: flex-start;
+		justify-content: space-between;
+		gap: 16px;
+
+		&__title {
+			h1 {
+				margin: 0;
+				font-size: 18px;
+				font-weight: 600;
+			}
+
+			p {
+				margin: 4px 0 0;
+				font-size: 13px;
+				color: var(--bg-vanilla-400);
+			}
+		}
+
+		&__actions {
+			display: flex;
+			align-items: center;
+			gap: 12px;
+		}
+
+		&__unsaved {
+			font-size: 13px;
+			color: var(--bg-amber-400);
+		}
+	}
+
+	.page-error {
+		padding: 12px 16px;
+		border-radius: 4px;
+		background: var(--bg-cherry-500-opacity-10, rgba(229, 72, 77, 0.1));
+		color: var(--bg-cherry-400);
+		font-size: 13px;
+	}
+
+	.page-footer {
+		font-size: 12px;
+		color: var(--bg-vanilla-400);
+	}
+
+	.muted {
+		color: var(--bg-vanilla-400);
+	}
+
+	.am-index-badge {
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		min-width: 22px;
+		height: 22px;
+		padding: 0 6px;
+		border-radius: 999px;
+		background: var(--bg-robin-500);
+		color: var(--bg-vanilla-100);
+		font-size: 12px;
+		font-weight: 600;
+	}
+
+	.am-row-actions {
+		display: flex;
+		align-items: center;
+		gap: 6px;
+	}
+
+	.am-add-row {
+		align-self: flex-start;
+	}
+
+	.groups-table__wrapper {
+		display: flex;
+		flex-direction: column;
+		gap: 8px;
+	}
+
+	.am-table {
+		&__empty {
+			padding: 24px 12px;
+			text-align: center;
+			color: var(--bg-vanilla-400);
+			font-size: 13px;
+		}
+	}
+
+	.groups-table {
+		&__name {
+			font-weight: 600;
+		}
+
+		&__name-cell {
+			display: flex;
+			align-items: center;
+			gap: 8px;
+		}
+
+		&__sub-row > td {
+			padding: 0 16px 12px;
+			background: var(--bg-ink-400, rgba(255, 255, 255, 0.02));
+		}
+
+		&__filters {
+			display: flex;
+			flex-direction: column;
+			gap: 6px;
+		}
+
+		&__filter {
+			display: flex;
+			align-items: center;
+			gap: 8px;
+			font-size: 13px;
+		}
+
+		&__filter-key {
+			font-family: 'Geist Mono', monospace;
+		}
+
+		&__edited {
+			display: flex;
+			flex-direction: column;
+			font-size: 12px;
+		}
+	}
+
+	.mappers-table__wrapper {
+		display: flex;
+		flex-direction: column;
+		gap: 8px;
+		margin: 4px 0;
+	}
+
+	.mappers-table {
+		margin: 4px 0;
+
+		&__target {
+			font-family: 'Geist Mono', monospace;
+			font-weight: 600;
+		}
+
+		&__sources {
+			display: flex;
+			flex-wrap: wrap;
+			align-items: center;
+			gap: 6px;
+		}
+
+		&__source-chip {
+			display: inline-flex;
+			align-items: center;
+			max-width: 220px;
+			padding: 2px 8px;
+			border: 1px solid var(--bg-slate-400, rgba(255, 255, 255, 0.12));
+			border-radius: 6px;
+			background: var(--bg-ink-300, rgba(255, 255, 255, 0.04));
+			font-family: 'Geist Mono', monospace;
+			font-size: 12px;
+			white-space: nowrap;
+			overflow: hidden;
+			text-overflow: ellipsis;
+		}
+
+		&__source-more {
+			font-size: 12px;
+			white-space: nowrap;
+		}
+
+		&__error {
+			padding: 12px;
+			font-size: 13px;
+			color: var(--bg-cherry-400);
+		}
+	}
+}

frontend/src/container/LLMObservabilityAttributeMapping/LLMObservabilityAttributeMapping.tsx

@@ -0,0 +1,77 @@
+import { useCallback } from 'react';
+
+import AttributeMappingHeader from './AttributeMappingHeader';
+import GroupFormDrawer from './GroupFormDrawer';
+import MapperGroupsTable from './MapperGroupsTable';
+import { useAttributeMappingStore } from './useAttributeMappingStore';
+import { useGroupFormDrawer } from './useGroupFormDrawer';
+
+import './LLMObservabilityAttributeMapping.styles.scss';
+
+function LLMObservabilityAttributeMapping(): JSX.Element {
+	const store = useAttributeMappingStore();
+	const groupDrawer = useGroupFormDrawer();
+
+	const handleGroupSave = useCallback((): void => {
+		store.upsertGroup(groupDrawer.draft);
+		groupDrawer.close();
+	}, [store, groupDrawer]);
+
+	const handleGroupDelete = useCallback((): void => {
+		if (groupDrawer.draft.id) {
+			store.removeGroup(groupDrawer.draft.id);
+		}
+		groupDrawer.close();
+	}, [store, groupDrawer]);
+
+	return (
+		<div
+			className="llm-observability-attribute-mapping"
+			data-testid="llm-observability-attribute-mapping-page"
+		>
+			<AttributeMappingHeader
+				isDirty={store.isDirty}
+				isSaving={store.isSaving}
+				onDiscard={store.discard}
+				onSave={store.save}
+			/>
+
+			{store.saveError && (
+				<div className="page-error" role="alert">
+					{store.saveError}
+				</div>
+			)}
+
+			{store.isError && (
+				<div className="page-error" role="alert">
+					Failed to load mapping groups. Please try again.
+				</div>
+			)}
+
+			<MapperGroupsTable
+				store={store}
+				onEditGroup={groupDrawer.openForEdit}
+				onAddGroup={groupDrawer.openForAdd}
+			/>
+
+			<footer className="page-footer">
+				Showing {store.groups.length} group{store.groups.length === 1 ? '' : 's'}
+			</footer>
+
+			<GroupFormDrawer
+				isOpen={groupDrawer.isOpen}
+				mode={groupDrawer.mode}
+				draft={groupDrawer.draft}
+				setDraft={groupDrawer.setDraft}
+				onClose={groupDrawer.close}
+				onSave={handleGroupSave}
+				onDelete={handleGroupDelete}
+				isSaving={false}
+				isDeleting={false}
+				saveError={null}
+			/>
+		</div>
+	);
+}
+
+export default LLMObservabilityAttributeMapping;

frontend/src/container/LLMObservabilityAttributeMapping/MapperFormDrawer.styles.scss

@@ -0,0 +1,104 @@
+.mapper-form {
+	display: flex;
+	flex-direction: column;
+	gap: 20px;
+	padding: 4px 0;
+
+	&__field {
+		display: flex;
+		flex-direction: column;
+		gap: 8px;
+	}
+
+	&__label {
+		font-size: 12px;
+		font-weight: 600;
+		text-transform: uppercase;
+		letter-spacing: 0.04em;
+		color: var(--bg-vanilla-400);
+	}
+
+	&__label-hint {
+		font-weight: 400;
+		text-transform: none;
+		letter-spacing: normal;
+	}
+
+	&__hint {
+		font-size: 12px;
+		color: var(--bg-vanilla-400);
+	}
+
+	&__sources {
+		display: flex;
+		flex-direction: column;
+		gap: 8px;
+	}
+
+	&__source {
+		display: flex;
+		align-items: center;
+		gap: 6px;
+	}
+
+	&__source-handle {
+		display: inline-flex;
+		align-items: center;
+		justify-content: center;
+		padding: 4px;
+		border: none;
+		background: transparent;
+		color: var(--bg-vanilla-400);
+		cursor: grab;
+		touch-action: none;
+		user-select: none;
+
+		&:active {
+			cursor: grabbing;
+		}
+	}
+
+	&__source-index {
+		width: 20px;
+		text-align: center;
+		font-size: 12px;
+		color: var(--bg-vanilla-400);
+	}
+
+	&__source-input {
+		flex: 1;
+		min-width: 0;
+		font-family: 'Geist Mono', monospace;
+	}
+
+	&__source-select {
+		flex: 0 0 auto;
+		width: 120px;
+	}
+
+	&__field-context {
+		width: 200px;
+	}
+
+	&__error {
+		padding: 10px 12px;
+		border-radius: 4px;
+		background: rgba(229, 72, 77, 0.1);
+		color: var(--bg-cherry-400);
+		font-size: 13px;
+	}
+
+	&__footer {
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		width: 100%;
+		gap: 8px;
+	}
+
+	&__footer-actions {
+		display: flex;
+		gap: 8px;
+		margin-left: auto;
+	}
+}

frontend/src/container/LLMObservabilityAttributeMapping/MapperFormDrawer.tsx

@@ -0,0 +1,267 @@
+import { useEffect, useRef, useState } from 'react';
+import { Button } from '@signozhq/ui/button';
+import { DrawerWrapper } from '@signozhq/ui/drawer';
+import { SelectSimple } from '@signozhq/ui/select';
+import {
+	closestCenter,
+	DndContext,
+	DragEndEvent,
+	PointerSensor,
+	useSensor,
+	useSensors,
+} from '@dnd-kit/core';
+import { restrictToVerticalAxis } from '@dnd-kit/modifiers';
+import {
+	arrayMove,
+	SortableContext,
+	verticalListSortingStrategy,
+} from '@dnd-kit/sortable';
+import { Plus, Trash2 } from '@signozhq/icons';
+import { v4 as uuid } from 'uuid';
+
+import KeySearchInput from './KeySearchInput';
+import SourceAttributeRow from './SourceAttributeRow';
+import {
+	FieldContext,
+	FieldContextValue,
+	MapperDraft,
+	MapperDraftMode,
+	SourceConfig,
+} from './types';
+import { createEmptySource, isMapperDraftValid } from './utils';
+
+import './MapperFormDrawer.styles.scss';
+
+const FIELD_CONTEXT_OPTIONS = [
+	{ value: FieldContext.attribute, label: 'Span attribute' },
+	{ value: FieldContext.resource, label: 'Resource' },
+];
+
+interface MapperFormDrawerProps {
+	isOpen: boolean;
+	mode: MapperDraftMode;
+	draft: MapperDraft;
+	setDraft: (next: MapperDraft) => void;
+	onClose: () => void;
+	onSave: () => void;
+	onDelete: () => void;
+	isSaving: boolean;
+	isDeleting: boolean;
+	saveError: string | null;
+}
+
+function MapperFormDrawer({
+	isOpen,
+	mode,
+	draft,
+	setDraft,
+	onClose,
+	onSave,
+	onDelete,
+	isSaving,
+	isDeleting,
+	saveError,
+}: MapperFormDrawerProps): JSX.Element {
+	const isEdit = mode === 'edit';
+	const isValid = isMapperDraftValid(draft);
+
+	// Stable per-row ids for the sortable list. These are UI-only (never sent to
+	// the API and excluded from the draft), so dnd-kit can track rows reliably
+	// even though sources are stored as a plain array. Re-seeded each time the
+	// drawer opens; kept in lockstep with the sources array on add/remove/drag.
+	const [rowIds, setRowIds] = useState<string[]>([]);
+	const wasOpen = useRef(false);
+
+	useEffect(() => {
+		if (isOpen && !wasOpen.current) {
+			setRowIds(draft.sources.map(() => uuid()));
+		}
+		wasOpen.current = isOpen;
+		// Only re-seed on the closed→open transition.
+		// eslint-disable-next-line react-hooks/exhaustive-deps
+	}, [isOpen]);
+
+	const sourceIds = draft.sources.map(
+		(_, index) => rowIds[index] ?? `pending-${index}`,
+	);
+
+	// 5px activation distance so clicking into the input never starts a drag.
+	const sensors = useSensors(
+		useSensor(PointerSensor, { activationConstraint: { distance: 5 } }),
+	);
+
+	const updateSource = (index: number, patch: Partial<SourceConfig>): void => {
+		const sources = draft.sources.map((source, i) =>
+			i === index ? { ...source, ...patch } : source,
+		);
+		setDraft({ ...draft, sources });
+	};
+
+	const addSource = (): void => {
+		setDraft({ ...draft, sources: [...draft.sources, createEmptySource()] });
+		setRowIds((prev) => [...prev, uuid()]);
+	};
+
+	const removeSource = (index: number): void => {
+		const sources = draft.sources.filter((_, i) => i !== index);
+		if (sources.length === 0) {
+			setDraft({ ...draft, sources: [createEmptySource()] });
+			setRowIds([uuid()]);
+			return;
+		}
+		setDraft({ ...draft, sources });
+		setRowIds((prev) => prev.filter((_, i) => i !== index));
+	};
+
+	const handleDragEnd = (event: DragEndEvent): void => {
+		const { active, over } = event;
+		if (!over || active.id === over.id) {
+			return;
+		}
+		const from = sourceIds.indexOf(String(active.id));
+		const to = sourceIds.indexOf(String(over.id));
+		if (from === -1 || to === -1) {
+			return;
+		}
+		setDraft({ ...draft, sources: arrayMove(draft.sources, from, to) });
+		setRowIds((prev) => arrayMove(prev, from, to));
+	};
+
+	return (
+		<DrawerWrapper
+			open={isOpen}
+			onOpenChange={(open): void => {
+				if (!open) {
+					onClose();
+				}
+			}}
+			title={isEdit ? 'Edit mapping' : 'New custom mapping'}
+			subTitle="Map source attributes onto a canonical target attribute"
+			width="wide"
+			testId="mapper-form-drawer"
+			footer={
+				<div className="mapper-form__footer">
+					{isEdit && (
+						<Button
+							variant="ghost"
+							color="destructive"
+							prefix={<Trash2 size={14} />}
+							onClick={onDelete}
+							disabled={isDeleting}
+							testId="mapper-form-delete"
+						>
+							{isDeleting ? 'Deleting…' : 'Delete'}
+						</Button>
+					)}
+					<div className="mapper-form__footer-actions">
+						<Button
+							variant="ghost"
+							color="secondary"
+							onClick={onClose}
+							testId="mapper-form-cancel"
+						>
+							Cancel
+						</Button>
+						<Button
+							variant="solid"
+							color="primary"
+							onClick={onSave}
+							disabled={!isValid || isSaving}
+							testId="mapper-form-save"
+						>
+							{/* eslint-disable-next-line no-nested-ternary */}
+							{isSaving ? 'Saving…' : isEdit ? 'Save mapping' : 'Create mapping'}
+						</Button>
+					</div>
+				</div>
+			}
+		>
+			<div className="mapper-form">
+				<div className="mapper-form__field">
+					<span className="mapper-form__label">Target attribute</span>
+					<KeySearchInput
+						placeholder="e.g. gen_ai.content.prompt"
+						value={draft.name}
+						fieldContext={draft.fieldContext}
+						disabled={isEdit}
+						onChange={(name): void => setDraft({ ...draft, name })}
+						testId="mapper-form-target"
+					/>
+					{isEdit && (
+						<span className="mapper-form__hint">
+							The target attribute can&apos;t be changed after creation.
+						</span>
+					)}
+				</div>
+
+				<div className="mapper-form__field">
+					<span className="mapper-form__label">Write target to</span>
+					<SelectSimple
+						className="mapper-form__field-context"
+						items={FIELD_CONTEXT_OPTIONS}
+						value={draft.fieldContext}
+						withPortal={false}
+						onChange={(next): void =>
+							setDraft({ ...draft, fieldContext: next as FieldContextValue })
+						}
+						testId="mapper-form-field-context"
+					/>
+					<span className="mapper-form__hint">
+						Where the standardized attribute is written.
+					</span>
+				</div>
+
+				<div className="mapper-form__field">
+					<span className="mapper-form__label">
+						Source attributes
+						<span className="mapper-form__label-hint">
+							{' '}
+							· priority: top → bottom · drag to reorder
+						</span>
+					</span>
+
+					<DndContext
+						sensors={sensors}
+						collisionDetection={closestCenter}
+						modifiers={[restrictToVerticalAxis]}
+						onDragEnd={handleDragEnd}
+					>
+						<SortableContext items={sourceIds} strategy={verticalListSortingStrategy}>
+							<div className="mapper-form__sources">
+								{draft.sources.map((source, index) => (
+									<SourceAttributeRow
+										key={sourceIds[index]}
+										id={sourceIds[index]}
+										index={index}
+										value={source}
+										canRemove={draft.sources.length > 1}
+										onChange={updateSource}
+										onRemove={removeSource}
+									/>
+								))}
+							</div>
+						</SortableContext>
+					</DndContext>
+
+					<Button
+						variant="dashed"
+						color="secondary"
+						prefix={<Plus size={14} />}
+						onClick={addSource}
+						testId="mapper-form-add-source"
+					>
+						Add another source
+					</Button>
+				</div>
+
+				{saveError && (
+					<div className="mapper-form__error" role="alert">
+						{saveError}
+					</div>
+				)}
+			</div>
+		</DrawerWrapper>
+	);
+}
+
+export default MapperFormDrawer;

frontend/src/container/LLMObservabilityAttributeMapping/MapperGroupsTable.tsx

@@ -0,0 +1,212 @@
+import { useState } from 'react';
+import { Badge } from '@signozhq/ui/badge';
+import { Button } from '@signozhq/ui/button';
+import { Switch } from '@signozhq/ui/switch';
+import {
+	Table,
+	TableBody,
+	TableCell,
+	TableHead,
+	TableHeader,
+	TableRow,
+} from '@signozhq/ui/table';
+import {
+	ChevronDown,
+	ChevronRight,
+	Pencil,
+	Plus,
+	Trash2,
+} from '@signozhq/icons';
+
+import MappersTable from './MappersTable';
+import { DraftGroup } from './types';
+import { AttributeMappingStore } from './useAttributeMappingStore';
+import { conditionFiltersFromGroup } from './utils';
+
+const COLUMN_COUNT = 4;
+
+interface MapperGroupsTableProps {
+	store: AttributeMappingStore;
+	onEditGroup: (group: DraftGroup) => void;
+	onAddGroup: () => void;
+}
+
+function FiltersCell({ group }: { group: DraftGroup }): JSX.Element {
+	const filters = conditionFiltersFromGroup(group);
+	if (filters.length === 0) {
+		return <span className="muted">No condition · always runs</span>;
+	}
+
+	return (
+		<div
+			className="groups-table__filters"
+			data-testid={`group-filters-${group.localId}`}
+		>
+			{filters.map((filter) => (
+				<div
+					className="groups-table__filter"
+					key={`${filter.context}:${filter.key}`}
+				>
+					<Badge
+						color={filter.context === 'resource' ? 'amber' : 'robin'}
+						variant="outline"
+					>
+						{filter.context}
+					</Badge>
+					<span className="groups-table__filter-key">contains {filter.key}</span>
+				</div>
+			))}
+		</div>
+	);
+}
+
+interface GroupRowProps {
+	group: DraftGroup;
+	store: AttributeMappingStore;
+	isExpanded: boolean;
+	onToggleExpand: (localId: string) => void;
+	onEditGroup: (group: DraftGroup) => void;
+}
+
+function GroupRow({
+	group,
+	store,
+	isExpanded,
+	onToggleExpand,
+	onEditGroup,
+}: GroupRowProps): JSX.Element {
+	return (
+		<>
+			<TableRow data-testid={`group-row-${group.localId}`}>
+				<TableCell>
+					<div className="groups-table__name-cell">
+						<Button
+							variant="ghost"
+							color="secondary"
+							size="icon"
+							aria-label={isExpanded ? 'Collapse group' : 'Expand group'}
+							onClick={(): void => onToggleExpand(group.localId)}
+							testId={`group-expand-${group.localId}`}
+						>
+							{isExpanded ? <ChevronDown size={14} /> : <ChevronRight size={14} />}
+						</Button>
+						<span
+							className="groups-table__name"
+							data-testid={`group-name-${group.localId}`}
+						>
+							{group.name}
+						</span>
+					</div>
+				</TableCell>
+				<TableCell>
+					<FiltersCell group={group} />
+				</TableCell>
+				<TableCell>
+					<span className="muted">{group.mappers.length} mappings</span>
+				</TableCell>
+				<TableCell>
+					<div className="am-row-actions">
+						<Button
+							variant="ghost"
+							color="secondary"
+							size="icon"
+							aria-label="Edit group"
+							onClick={(): void => onEditGroup(group)}
+							testId={`group-edit-${group.localId}`}
+						>
+							<Pencil size={14} />
+						</Button>
+						<Button
+							variant="ghost"
+							color="destructive"
+							size="icon"
+							aria-label="Delete group"
+							onClick={(): void => store.removeGroup(group.localId)}
+							testId={`group-delete-${group.localId}`}
+						>
+							<Trash2 size={14} />
+						</Button>
+						<Switch
+							value={group.enabled}
+							onChange={(checked): void => store.toggleGroup(group.localId, checked)}
+							testId={`group-enabled-${group.localId}`}
+						/>
+					</div>
+				</TableCell>
+			</TableRow>
+			{isExpanded && (
+				<TableRow className="groups-table__sub-row">
+					<TableCell colSpan={COLUMN_COUNT}>
+						<MappersTable group={group} store={store} />
+					</TableCell>
+				</TableRow>
+			)}
+		</>
+	);
+}
+
+function MapperGroupsTable({
+	store,
+	onEditGroup,
+	onAddGroup,
+}: MapperGroupsTableProps): JSX.Element {
+	const [expandedId, setExpandedId] = useState<string | null>(null);
+
+	const toggleExpand = (localId: string): void => {
+		setExpandedId((current) => (current === localId ? null : localId));
+	};
+
+	return (
+		<div className="groups-table__wrapper">
+			<Table testId="mapper-groups-table" className="am-table">
+				<TableHeader>
+					<TableRow>
+						<TableHead>Group name</TableHead>
+						<TableHead>Filters</TableHead>
+						<TableHead>Mappings</TableHead>
+						<TableHead>Actions</TableHead>
+					</TableRow>
+				</TableHeader>
+				<TableBody>
+					{store.isLoading && store.groups.length === 0 && (
+						<TableRow>
+							<TableCell colSpan={COLUMN_COUNT} className="am-table__empty">
+								Loading groups…
+							</TableCell>
+						</TableRow>
+					)}
+					{!store.isLoading && store.groups.length === 0 && (
+						<TableRow>
+							<TableCell colSpan={COLUMN_COUNT} className="am-table__empty">
+								No mapping groups yet.
+							</TableCell>
+						</TableRow>
+					)}
+					{store.groups.map((group) => (
+						<GroupRow
+							key={group.localId}
+							group={group}
+							store={store}
+							isExpanded={expandedId === group.localId}
+							onToggleExpand={toggleExpand}
+							onEditGroup={onEditGroup}
+						/>
+					))}
+				</TableBody>
+			</Table>
+
+			<Button
+				variant="ghost"
+				color="primary"
+				prefix={<Plus size={14} />}
+				className="am-add-row"
+				onClick={onAddGroup}
+				testId="add-group-row"
+			>
+				Add a new group
+			</Button>
+		</div>
+	);
+}
+
+export default MapperGroupsTable;

frontend/src/container/LLMObservabilityAttributeMapping/MappersTable.tsx

@@ -0,0 +1,208 @@
+import { useCallback } from 'react';
+import { Badge } from '@signozhq/ui/badge';
+import { Button } from '@signozhq/ui/button';
+import { Switch } from '@signozhq/ui/switch';
+import {
+	Table,
+	TableBody,
+	TableCell,
+	TableHead,
+	TableHeader,
+	TableRow,
+} from '@signozhq/ui/table';
+import { Pencil, Plus, Trash2 } from '@signozhq/icons';
+
+import IndexBadge from './IndexBadge';
+import MapperFormDrawer from './MapperFormDrawer';
+import { DraftGroup, DraftMapper, FieldContext } from './types';
+import { AttributeMappingStore } from './useAttributeMappingStore';
+import { useMapperFormDrawer } from './useMapperFormDrawer';
+
+const MAX_VISIBLE_SOURCES = 3;
+const COLUMN_COUNT = 5;
+
+interface MappersTableProps {
+	group: DraftGroup;
+	store: AttributeMappingStore;
+}
+
+function SourcesCell({ mapper }: { mapper: DraftMapper }): JSX.Element {
+	if (mapper.sources.length === 0) {
+		return <span className="muted">—</span>;
+	}
+
+	const visible = mapper.sources.slice(0, MAX_VISIBLE_SOURCES);
+	const remaining = mapper.sources.length - visible.length;
+
+	return (
+		<div
+			className="mappers-table__sources"
+			data-testid={`mapper-sources-${mapper.localId}`}
+		>
+			{visible.map((source) => (
+				<span
+					className="mappers-table__source-chip"
+					key={`${source.context}:${source.key}`}
+					title={source.key}
+				>
+					{source.key}
+				</span>
+			))}
+			{remaining > 0 && (
+				<span className="mappers-table__source-more muted">+{remaining} more</span>
+			)}
+		</div>
+	);
+}
+
+interface MapperRowProps {
+	mapper: DraftMapper;
+	index: number;
+	onEdit: (mapper: DraftMapper) => void;
+	onDelete: (mapperLocalId: string) => void;
+	onToggle: (mapperLocalId: string, enabled: boolean) => void;
+}
+
+function MapperRow({
+	mapper,
+	index,
+	onEdit,
+	onDelete,
+	onToggle,
+}: MapperRowProps): JSX.Element {
+	return (
+		<TableRow data-testid={`mapper-row-${mapper.localId}`}>
+			<TableCell>
+				<IndexBadge index={index} />
+			</TableCell>
+			<TableCell>
+				<span
+					className="mappers-table__target"
+					data-testid={`mapper-target-${mapper.localId}`}
+				>
+					{mapper.name}
+				</span>
+			</TableCell>
+			<TableCell>
+				<SourcesCell mapper={mapper} />
+			</TableCell>
+			<TableCell>
+				<Badge
+					color={mapper.fieldContext === FieldContext.resource ? 'amber' : 'robin'}
+					variant="outline"
+				>
+					{mapper.fieldContext}
+				</Badge>
+			</TableCell>
+			<TableCell>
+				<div className="am-row-actions">
+					<Button
+						variant="ghost"
+						color="secondary"
+						size="icon"
+						aria-label="Edit mapping"
+						onClick={(): void => onEdit(mapper)}
+						testId={`mapper-edit-${mapper.localId}`}
+					>
+						<Pencil size={14} />
+					</Button>
+					<Button
+						variant="ghost"
+						color="destructive"
+						size="icon"
+						aria-label="Delete mapping"
+						onClick={(): void => onDelete(mapper.localId)}
+						testId={`mapper-delete-${mapper.localId}`}
+					>
+						<Trash2 size={14} />
+					</Button>
+					<Switch
+						value={mapper.enabled}
+						onChange={(checked): void => onToggle(mapper.localId, checked)}
+						testId={`mapper-enabled-${mapper.localId}`}
+					/>
+				</div>
+			</TableCell>
+		</TableRow>
+	);
+}
+
+function MappersTable({ group, store }: MappersTableProps): JSX.Element {
+	const drawer = useMapperFormDrawer();
+
+	const handleSave = useCallback((): void => {
+		store.upsertMapper(group.localId, drawer.draft);
+		drawer.close();
+	}, [store, group.localId, drawer]);
+
+	const handleDelete = useCallback((): void => {
+		if (drawer.draft.id) {
+			store.removeMapper(group.localId, drawer.draft.id);
+		}
+		drawer.close();
+	}, [store, group.localId, drawer]);
+
+	return (
+		<div className="mappers-table__wrapper">
+			<Table testId={`mappers-table-${group.localId}`} className="am-table">
+				<TableHeader>
+					<TableRow>
+						<TableHead>#</TableHead>
+						<TableHead>Target</TableHead>
+						<TableHead>Sources</TableHead>
+						<TableHead>Writes to</TableHead>
+						<TableHead>Actions</TableHead>
+					</TableRow>
+				</TableHeader>
+				<TableBody>
+					{group.mappers.length === 0 && (
+						<TableRow>
+							<TableCell colSpan={COLUMN_COUNT} className="am-table__empty">
+								No mappings in this group yet.
+							</TableCell>
+						</TableRow>
+					)}
+					{group.mappers.map((mapper, index) => (
+						<MapperRow
+							key={mapper.localId}
+							mapper={mapper}
+							index={index}
+							onEdit={drawer.openForEdit}
+							onDelete={(localId): void => store.removeMapper(group.localId, localId)}
+							onToggle={(localId, enabled): void =>
+								store.toggleMapper(group.localId, localId, enabled)
+							}
+						/>
+					))}
+				</TableBody>
+			</Table>
+
+			<Button
+				variant="ghost"
+				color="primary"
+				size="sm"
+				prefix={<Plus size={14} />}
+				className="am-add-row"
+				onClick={drawer.openForAdd}
+				testId={`add-mapper-${group.localId}`}
+			>
+				Add mapping
+			</Button>
+
+			<MapperFormDrawer
+				isOpen={drawer.isOpen}
+				mode={drawer.mode}
+				draft={drawer.draft}
+				setDraft={drawer.setDraft}
+				onClose={drawer.close}
+				onSave={handleSave}
+				onDelete={handleDelete}
+				isSaving={false}
+				isDeleting={false}
+				saveError={null}
+			/>
+		</div>
+	);
+}
+
+export default MappersTable;

frontend/src/container/LLMObservabilityAttributeMapping/SourceAttributeRow.tsx

@@ -0,0 +1,115 @@
+import { Button } from '@signozhq/ui/button';
+import { SelectSimple } from '@signozhq/ui/select';
+import { useSortable } from '@dnd-kit/sortable';
+import { CSS } from '@dnd-kit/utilities';
+import { GripVertical, X } from '@signozhq/icons';
+
+import KeySearchInput from './KeySearchInput';
+import {
+	FieldContext,
+	FieldContextValue,
+	MapperOperation,
+	MapperOperationValue,
+	SourceConfig,
+} from './types';
+
+const CONTEXT_OPTIONS = [
+	{ value: FieldContext.attribute, label: 'Attribute' },
+	{ value: FieldContext.resource, label: 'Resource' },
+];
+
+const OPERATION_OPTIONS = [
+	{ value: MapperOperation.move, label: 'Move' },
+	{ value: MapperOperation.copy, label: 'Copy' },
+];
+
+interface SourceAttributeRowProps {
+	id: string;
+	index: number;
+	value: SourceConfig;
+	canRemove: boolean;
+	onChange: (index: number, patch: Partial<SourceConfig>) => void;
+	onRemove: (index: number) => void;
+}
+
+// A single draggable source row. Order = priority (top wins). Each source can
+// be read from a span attribute or the resource, and moved (delete source) or
+// copied (keep source). Only the grip is a drag handle.
+function SourceAttributeRow({
+	id,
+	index,
+	value,
+	canRemove,
+	onChange,
+	onRemove,
+}: SourceAttributeRowProps): JSX.Element {
+	const {
+		attributes,
+		listeners,
+		setNodeRef,
+		transform,
+		transition,
+		isDragging,
+	} = useSortable({ id });
+
+	const style = {
+		transform: CSS.Transform.toString(transform),
+		transition,
+		opacity: isDragging ? 0.6 : 1,
+	};
+
+	return (
+		<div className="mapper-form__source" ref={setNodeRef} style={style}>
+			<div
+				className="mapper-form__source-handle"
+				data-testid={`mapper-form-source-handle-${index}`}
+				{...attributes}
+				{...listeners}
+			>
+				<GripVertical size={14} />
+			</div>
+			<span className="mapper-form__source-index">{index + 1}</span>
+			<KeySearchInput
+				className="mapper-form__source-input"
+				placeholder="Source attribute key"
+				value={value.key}
+				fieldContext={value.context}
+				onChange={(key): void => onChange(index, { key })}
+				testId={`mapper-form-source-${index}`}
+			/>
+			<SelectSimple
+				className="mapper-form__source-select"
+				items={CONTEXT_OPTIONS}
+				value={value.context}
+				withPortal={false}
+				onChange={(next): void =>
+					onChange(index, { context: next as FieldContextValue })
+				}
+				testId={`mapper-form-source-context-${index}`}
+			/>
+			<SelectSimple
+				className="mapper-form__source-select"
+				items={OPERATION_OPTIONS}
+				value={value.operation}
+				withPortal={false}
+				onChange={(next): void =>
+					onChange(index, { operation: next as MapperOperationValue })
+				}
+				testId={`mapper-form-source-operation-${index}`}
+			/>
+			<Button
+				variant="ghost"
+				color="secondary"
+				size="icon"
+				aria-label="Remove source"
+				disabled={!canRemove}
+				onClick={(): void => onRemove(index)}
+				testId={`mapper-form-source-remove-${index}`}
+			>
+				<X size={14} />
+			</Button>
+		</div>
+	);
+}
+
+export default SourceAttributeRow;

frontend/src/container/LLMObservabilityAttributeMapping/__tests__/ConditionKeyList.test.tsx

@@ -0,0 +1,64 @@
+import { useState } from 'react';
+import { rest, server } from 'mocks-server/server';
+import { fireEvent, render, screen } from 'tests/test-utils';
+
+import ConditionKeyList from '../ConditionKeyList';
+import { FieldContext } from '../types';
+
+const FIELDS_ENDPOINT = '*/api/v1/fields/keys';
+
+function Harness({ initial = [] as string[] }): JSX.Element {
+	const [keys, setKeys] = useState<string[]>(initial);
+	return (
+		<ConditionKeyList
+			label="Attributes"
+			keys={keys}
+			placeholder="key"
+			addLabel="Add attribute key"
+			testIdPrefix="cond"
+			fieldContext={FieldContext.attribute}
+			onChange={setKeys}
+		/>
+	);
+}
+
+describe('ConditionKeyList', () => {
+	beforeEach(() => {
+		server.use(
+			rest.get(FIELDS_ENDPOINT, (_, res, ctx) =>
+				res(
+					ctx.status(200),
+					ctx.json({ status: 'success', data: { complete: true, keys: {} } }),
+				),
+			),
+		);
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	it('renders no key rows and only the add button when empty', () => {
+		render(<Harness />);
+		expect(screen.queryByTestId('cond-0')).not.toBeInTheDocument();
+		expect(screen.getByTestId('cond-add')).toBeInTheDocument();
+	});
+
+	it('adds a key row when the add button is clicked', () => {
+		render(<Harness />);
+		fireEvent.click(screen.getByTestId('cond-add'));
+		expect(screen.getByTestId('cond-0')).toBeInTheDocument();
+	});
+
+	it('removes a key row when its remove button is clicked', () => {
+		render(<Harness initial={['gen_ai.', 'llm.']} />);
+
+		expect(screen.getByTestId('cond-0')).toBeInTheDocument();
+		expect(screen.getByTestId('cond-1')).toBeInTheDocument();
+
+		fireEvent.click(screen.getByTestId('cond-remove-1'));
+
+		expect(screen.queryByTestId('cond-1')).not.toBeInTheDocument();
+		expect(screen.getByTestId('cond-0')).toBeInTheDocument();
+	});
+});

frontend/src/container/LLMObservabilityAttributeMapping/__tests__/KeySearchInput.test.tsx

@@ -0,0 +1,123 @@
+import { rest, server } from 'mocks-server/server';
+import { fireEvent, render, screen, waitFor } from 'tests/test-utils';
+
+import KeySearchInput from '../KeySearchInput';
+import { FieldContext } from '../types';
+
+const FIELDS_ENDPOINT = '*/api/v1/fields/keys';
+
+const mockKeysResponse = {
+	status: 'success',
+	data: {
+		complete: true,
+		keys: {
+			'gen_ai.request.model': [
+				{ name: 'gen_ai.request.model', fieldContext: 'attribute' },
+			],
+			'llm.model': [{ name: 'llm.model', fieldContext: 'attribute' }],
+		},
+	},
+};
+
+describe('KeySearchInput', () => {
+	let lastRequestParams: Record<string, string | null> = {};
+
+	beforeEach(() => {
+		lastRequestParams = {};
+		server.use(
+			rest.get(FIELDS_ENDPOINT, (req, res, ctx) => {
+				lastRequestParams = {
+					signal: req.url.searchParams.get('signal'),
+					fieldContext: req.url.searchParams.get('fieldContext'),
+					searchText: req.url.searchParams.get('searchText'),
+				};
+				return res(ctx.status(200), ctx.json(mockKeysResponse));
+			}),
+		);
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	it('does not show suggestions until the input is focused', () => {
+		render(
+			<KeySearchInput
+				value=""
+				fieldContext={FieldContext.attribute}
+				onChange={jest.fn()}
+				testId="key"
+			/>,
+		);
+
+		expect(screen.queryByTestId('key-dropdown')).not.toBeInTheDocument();
+	});
+
+	it('shows suggestions on focus and selecting one calls onChange with the key', async () => {
+		const onChange = jest.fn();
+		render(
+			<KeySearchInput
+				value=""
+				fieldContext={FieldContext.attribute}
+				onChange={onChange}
+				testId="key"
+			/>,
+		);
+
+		fireEvent.focus(screen.getByTestId('key'));
+
+		const option = await screen.findByTestId('key-option-gen_ai.request.model');
+		fireEvent.mouseDown(option);
+
+		expect(onChange).toHaveBeenCalledWith('gen_ai.request.model');
+	});
+
+	it('queries traces with the resource context when fieldContext is resource', async () => {
+		render(
+			<KeySearchInput
+				value=""
+				fieldContext={FieldContext.resource}
+				onChange={jest.fn()}
+				testId="key"
+			/>,
+		);
+
+		fireEvent.focus(screen.getByTestId('key'));
+
+		await waitFor(() => expect(lastRequestParams.fieldContext).toBe('resource'));
+		expect(lastRequestParams.signal).toBe('traces');
+	});
+
+	it('accepts free text typed by the user (custom key)', () => {
+		const onChange = jest.fn();
+		render(
+			<KeySearchInput
+				value=""
+				fieldContext={FieldContext.attribute}
+				onChange={onChange}
+				testId="key"
+			/>,
+		);
+
+		fireEvent.change(screen.getByTestId('key'), {
+			target: { value: 'my.custom.key' },
+		});
+
+		expect(onChange).toHaveBeenCalledWith('my.custom.key');
+	});
+
+	it('does not query while disabled', () => {
+		render(
+			<KeySearchInput
+				value=""
+				fieldContext={FieldContext.attribute}
+				disabled
+				onChange={jest.fn()}
+				testId="key"
+			/>,
+		);
+
+		fireEvent.focus(screen.getByTestId('key'));
+		expect(screen.queryByTestId('key-dropdown')).not.toBeInTheDocument();
+	});
+});

frontend/src/container/LLMObservabilityAttributeMapping/__tests__/LLMObservabilityAttributeMapping.test.tsx

@@ -0,0 +1,72 @@
+import { SpantypesSpanMapperGroupDTO } from 'api/generated/services/sigNoz.schemas';
+import { rest, server } from 'mocks-server/server';
+import { fireEvent, render, screen } from 'tests/test-utils';
+
+import LLMObservabilityAttributeMapping from '../LLMObservabilityAttributeMapping';
+
+const GROUPS_ENDPOINT = '*/api/v1/span_mapper_groups';
+const MAPPERS_ENDPOINT = '*/api/v1/span_mapper_groups/:groupId/span_mappers';
+
+const mockGroups: SpantypesSpanMapperGroupDTO[] = [
+	{
+		id: 'group-openai',
+		orgId: 'org-1',
+		name: 'OpenAI gateway',
+		enabled: true,
+		condition: { attributes: ['gen_ai.'], resource: [] },
+		updatedBy: 'gaurav.tewari@signoz.io',
+		updatedAt: '2026-06-10T09:30:00Z',
+	},
+];
+
+describe('LLMObservabilityAttributeMapping', () => {
+	beforeEach(() => {
+		server.use(
+			rest.get(MAPPERS_ENDPOINT, (_, res, ctx) =>
+				res(ctx.status(200), ctx.json({ status: 'success', data: { items: [] } })),
+			),
+			rest.get(GROUPS_ENDPOINT, (_, res, ctx) =>
+				res(
+					ctx.status(200),
+					ctx.json({ status: 'success', data: { items: mockGroups } }),
+				),
+			),
+		);
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	it('renders the page header and the group row', async () => {
+		render(<LLMObservabilityAttributeMapping />);
+
+		await screen.findByTestId('group-name-group-openai');
+		expect(screen.getByText('Attribute Mapping')).toBeInTheDocument();
+		expect(screen.getByText('OpenAI gateway')).toBeInTheDocument();
+	});
+
+	it('opens the group drawer in Add mode with empty name', async () => {
+		render(<LLMObservabilityAttributeMapping />);
+
+		await screen.findByTestId('group-name-group-openai');
+		fireEvent.click(screen.getByTestId('add-group-row'));
+
+		const input = (await screen.findByTestId(
+			'group-form-name',
+		)) as HTMLInputElement;
+		expect(input.value).toBe('');
+	});
+
+	it('opens the group drawer in Edit mode prefilled with the group name', async () => {
+		render(<LLMObservabilityAttributeMapping />);
+
+		await screen.findByTestId('group-name-group-openai');
+		fireEvent.click(screen.getByTestId('group-edit-group-openai'));
+
+		const input = (await screen.findByTestId(
+			'group-form-name',
+		)) as HTMLInputElement;
+		expect(input.value).toBe('OpenAI gateway');
+	});
+});

frontend/src/container/LLMObservabilityAttributeMapping/__tests__/MapperFormDrawer.test.tsx

@@ -0,0 +1,115 @@
+import { useState } from 'react';
+import { rest, server } from 'mocks-server/server';
+import { fireEvent, render, screen } from 'tests/test-utils';
+
+import MapperFormDrawer from '../MapperFormDrawer';
+import {
+	FieldContext,
+	MapperDraft,
+	MapperDraftMode,
+	MapperOperation,
+} from '../types';
+import { EMPTY_MAPPER_DRAFT } from '../utils';
+
+const FIELDS_ENDPOINT = '*/api/v1/fields/keys';
+
+const filledDraft: MapperDraft = {
+	id: null,
+	name: 'gen_ai.request.model',
+	fieldContext: FieldContext.attribute,
+	sources: [
+		{
+			key: 'llm.model',
+			context: FieldContext.attribute,
+			operation: MapperOperation.move,
+		},
+	],
+	enabled: true,
+};
+
+interface HarnessProps {
+	initialDraft?: MapperDraft;
+	mode?: MapperDraftMode;
+	onSave?: () => void;
+	onDelete?: () => void;
+}
+
+function Harness({
+	initialDraft = EMPTY_MAPPER_DRAFT,
+	mode = 'add',
+	onSave = jest.fn(),
+	onDelete = jest.fn(),
+}: HarnessProps): JSX.Element {
+	const [draft, setDraft] = useState<MapperDraft>(initialDraft);
+	return (
+		<MapperFormDrawer
+			isOpen
+			mode={mode}
+			draft={draft}
+			setDraft={setDraft}
+			onClose={jest.fn()}
+			onSave={onSave}
+			onDelete={onDelete}
+			isSaving={false}
+			isDeleting={false}
+			saveError={null}
+		/>
+	);
+}
+
+describe('MapperFormDrawer', () => {
+	beforeEach(() => {
+		server.use(
+			rest.get(FIELDS_ENDPOINT, (_, res, ctx) =>
+				res(
+					ctx.status(200),
+					ctx.json({ status: 'success', data: { complete: true, keys: {} } }),
+				),
+			),
+		);
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	it('disables Create when the target/sources are empty', () => {
+		render(<Harness />);
+		expect(screen.getByTestId('mapper-form-save')).toBeDisabled();
+	});
+
+	it('enables Create with a target and a source key, and calls onSave', () => {
+		const onSave = jest.fn();
+		render(<Harness initialDraft={filledDraft} onSave={onSave} />);
+
+		const save = screen.getByTestId('mapper-form-save');
+		expect(save).not.toBeDisabled();
+
+		fireEvent.click(save);
+		expect(onSave).toHaveBeenCalledTimes(1);
+	});
+
+	it('adds a source row when "Add another source" is clicked', () => {
+		render(<Harness initialDraft={filledDraft} />);
+
+		expect(screen.queryByTestId('mapper-form-source-1')).not.toBeInTheDocument();
+		fireEvent.click(screen.getByTestId('mapper-form-add-source'));
+		expect(screen.getByTestId('mapper-form-source-1')).toBeInTheDocument();
+	});
+
+	it('makes the target read-only in edit mode and shows delete', () => {
+		const onDelete = jest.fn();
+		render(
+			<Harness
+				initialDraft={{ ...filledDraft, id: 'local-mapper-1' }}
+				mode="edit"
+				onDelete={onDelete}
+			/>,
+		);
+
+		expect(screen.getByTestId('mapper-form-target')).toBeDisabled();
+
+		fireEvent.click(screen.getByTestId('mapper-form-delete'));
+		expect(onDelete).toHaveBeenCalledTimes(1);
+	});
+});

frontend/src/container/LLMObservabilityAttributeMapping/__tests__/saveDraft.test.ts

@@ -0,0 +1,146 @@
+import { persistDraft, SaveMutations } from '../saveDraft';
+import {
+	DraftGroup,
+	DraftMapper,
+	FieldContext,
+	MapperOperation,
+} from '../types';
+
+function mapper(over: Partial<DraftMapper>): DraftMapper {
+	return {
+		localId: 'm',
+		serverId: 'm',
+		name: 'm',
+		fieldContext: FieldContext.attribute,
+		sources: [
+			{
+				key: 'x',
+				context: FieldContext.attribute,
+				operation: MapperOperation.move,
+			},
+		],
+		enabled: true,
+		...over,
+	};
+}
+
+function group(over: Partial<DraftGroup>): DraftGroup {
+	return {
+		localId: 'g',
+		serverId: 'g',
+		name: 'g',
+		attributes: [],
+		resource: [],
+		enabled: true,
+		mappers: [],
+		...over,
+	};
+}
+
+interface RecordedCalls {
+	createGroup: unknown[];
+	updateGroup: [string, unknown][];
+	deleteGroup: string[];
+	createMapper: [string, unknown][];
+	updateMapper: [string, string, unknown][];
+	deleteMapper: [string, string][];
+}
+
+function makeMutations(): { calls: RecordedCalls; mutations: SaveMutations } {
+	const calls: RecordedCalls = {
+		createGroup: [],
+		updateGroup: [],
+		deleteGroup: [],
+		createMapper: [],
+		updateMapper: [],
+		deleteMapper: [],
+	};
+	const mutations: SaveMutations = {
+		createGroup: async (data): Promise<string> => {
+			calls.createGroup.push(data);
+			return 'new-group-id';
+		},
+		updateGroup: async (id, data): Promise<void> => {
+			calls.updateGroup.push([id, data]);
+		},
+		deleteGroup: async (id): Promise<void> => {
+			calls.deleteGroup.push(id);
+		},
+		createMapper: async (gid, data): Promise<void> => {
+			calls.createMapper.push([gid, data]);
+		},
+		updateMapper: async (gid, mid, data): Promise<void> => {
+			calls.updateMapper.push([gid, mid, data]);
+		},
+		deleteMapper: async (gid, mid): Promise<void> => {
+			calls.deleteMapper.push([gid, mid]);
+		},
+	};
+	return { calls, mutations };
+}
+
+describe('persistDraft', () => {
+	it('issues the minimal set of create/update/delete calls', async () => {
+		const snapshot: DraftGroup[] = [
+			group({
+				localId: 'g1',
+				serverId: 'g1',
+				name: 'G1',
+				mappers: [
+					mapper({ localId: 'm1', serverId: 'm1', name: 'keep' }),
+					mapper({ localId: 'mdel', serverId: 'mdel', name: 'del' }),
+				],
+			}),
+			group({ localId: 'g2', serverId: 'g2', name: 'G2' }),
+		];
+
+		const draft: DraftGroup[] = [
+			group({
+				localId: 'g1',
+				serverId: 'g1',
+				name: 'G1-renamed', // changed -> update
+				mappers: [
+					mapper({ localId: 'm1', serverId: 'm1', name: 'keep' }), // unchanged
+					mapper({ localId: 'local-mapper-x', serverId: null, name: 'fresh' }), // new
+				],
+			}),
+			// g2 removed -> delete
+			group({
+				localId: 'local-group-y',
+				serverId: null,
+				name: 'G3',
+				mappers: [
+					mapper({ localId: 'local-mapper-z', serverId: null, name: 'g3map' }),
+				],
+			}),
+		];
+
+		const { calls, mutations } = makeMutations();
+		await persistDraft(snapshot, draft, mutations);
+
+		expect(calls.deleteGroup).toStrictEqual(['g2']);
+		expect(calls.updateGroup.map(([id]) => id)).toStrictEqual(['g1']);
+		expect(calls.deleteMapper).toStrictEqual([['g1', 'mdel']]);
+		// no-op mapper is not updated
+		expect(calls.updateMapper).toStrictEqual([]);
+		// new group created once, then its mapper created under the returned id
+		expect(calls.createGroup).toHaveLength(1);
+		const createMapperGroupIds = calls.createMapper.map(([gid]) => gid).sort();
+		expect(createMapperGroupIds).toStrictEqual(['g1', 'new-group-id']);
+	});
+
+	it('does nothing when the draft equals the snapshot', async () => {
+		const snapshot: DraftGroup[] = [group({ localId: 'g1', serverId: 'g1' })];
+		const draft: DraftGroup[] = [group({ localId: 'g1', serverId: 'g1' })];
+
+		const { calls, mutations } = makeMutations();
+		await persistDraft(snapshot, draft, mutations);
+
+		expect(calls.createGroup).toHaveLength(0);
+		expect(calls.updateGroup).toHaveLength(0);
+		expect(calls.deleteGroup).toHaveLength(0);
+		expect(calls.createMapper).toHaveLength(0);
+		expect(calls.updateMapper).toHaveLength(0);
+		expect(calls.deleteMapper).toHaveLength(0);
+	});
+});

frontend/src/container/LLMObservabilityAttributeMapping/__tests__/utils.test.ts

@@ -0,0 +1,330 @@
+import {
+	DraftGroup,
+	FieldContext,
+	Mapper,
+	MapperDraft,
+	MapperGroup,
+	MapperOperation,
+	SourceConfig,
+} from '../types';
+import {
+	buildDraftGroup,
+	buildDraftMapper,
+	buildPostableGroup,
+	buildPostableMapper,
+	buildUpdatableMapper,
+	cleanKeys,
+	conditionFiltersFromGroup,
+	EMPTY_GROUP_DRAFT,
+	EMPTY_MAPPER_DRAFT,
+	formatTimestamp,
+	getMapperSources,
+	groupDraftFromNode,
+	isGroupDraftValid,
+	isMapperDraftValid,
+	mapperDraftFromNode,
+	nodeFromGroupDraft,
+	nodeFromMapperDraft,
+} from '../utils';
+
+function src(
+	key: string,
+	operation = MapperOperation.copy,
+	context = FieldContext.attribute,
+): SourceConfig {
+	return { key, context, operation };
+}
+
+function mapperDraft(over: Partial<MapperDraft>): MapperDraft {
+	return {
+		id: null,
+		name: 'target',
+		fieldContext: FieldContext.attribute,
+		sources: [src('a')],
+		enabled: true,
+		...over,
+	};
+}
+
+const mapper: Mapper = {
+	id: 'm1',
+	group_id: 'g1',
+	name: 'gen_ai.request.model',
+	enabled: true,
+	fieldContext: FieldContext.attribute,
+	config: {
+		sources: [
+			{
+				key: 'low',
+				context: FieldContext.attribute,
+				operation: MapperOperation.copy,
+				priority: 1,
+			},
+			{
+				key: 'high',
+				context: FieldContext.resource,
+				operation: MapperOperation.move,
+				priority: 3,
+			},
+			{
+				key: 'mid',
+				context: FieldContext.attribute,
+				operation: MapperOperation.copy,
+				priority: 2,
+			},
+		],
+	},
+};
+
+const group: MapperGroup = {
+	id: 'g1',
+	orgId: 'org1',
+	name: 'OpenAI',
+	enabled: true,
+	condition: { attributes: ['gen_ai.', 'llm.'], resource: [] },
+};
+
+describe('attribute-mapping utils', () => {
+	describe('cleanKeys', () => {
+		it('trims, drops empties, and de-duplicates preserving order', () => {
+			expect(cleanKeys([' a ', '', 'b', 'a', '  '])).toStrictEqual(['a', 'b']);
+		});
+	});
+
+	describe('getMapperSources', () => {
+		it('returns sources sorted by priority descending, preserving context/operation', () => {
+			expect(getMapperSources(mapper)).toStrictEqual([
+				{
+					key: 'high',
+					context: FieldContext.resource,
+					operation: MapperOperation.move,
+				},
+				{
+					key: 'mid',
+					context: FieldContext.attribute,
+					operation: MapperOperation.copy,
+				},
+				{
+					key: 'low',
+					context: FieldContext.attribute,
+					operation: MapperOperation.copy,
+				},
+			]);
+		});
+
+		it('returns empty array when there are no sources', () => {
+			expect(
+				getMapperSources({ ...mapper, config: { sources: null } }),
+			).toStrictEqual([]);
+		});
+	});
+
+	describe('conditionFiltersFromGroup', () => {
+		it('lists attribute clauses first, then resource clauses', () => {
+			expect(
+				conditionFiltersFromGroup({
+					attributes: ['gen_ai.', 'llm.'],
+					resource: ['service.name'],
+				}),
+			).toStrictEqual([
+				{ context: 'attribute', key: 'gen_ai.' },
+				{ context: 'attribute', key: 'llm.' },
+				{ context: 'resource', key: 'service.name' },
+			]);
+		});
+	});
+
+	describe('formatTimestamp', () => {
+		it('renders a dash for missing timestamps', () => {
+			expect(formatTimestamp(undefined)).toBe('—');
+		});
+	});
+
+	describe('draft-tree builders', () => {
+		it('builds a draft mapper node carrying server id, fieldContext and sources', () => {
+			expect(buildDraftMapper(mapper)).toStrictEqual({
+				localId: 'm1',
+				serverId: 'm1',
+				name: 'gen_ai.request.model',
+				fieldContext: FieldContext.attribute,
+				sources: [
+					{
+						key: 'high',
+						context: FieldContext.resource,
+						operation: MapperOperation.move,
+					},
+					{
+						key: 'mid',
+						context: FieldContext.attribute,
+						operation: MapperOperation.copy,
+					},
+					{
+						key: 'low',
+						context: FieldContext.attribute,
+						operation: MapperOperation.copy,
+					},
+				],
+				enabled: true,
+			});
+		});
+
+		it('builds a draft group node with nested mappers', () => {
+			const node = buildDraftGroup(group, [mapper]);
+			expect(node.localId).toBe('g1');
+			expect(node.attributes).toStrictEqual(['gen_ai.', 'llm.']);
+			expect(node.mappers).toHaveLength(1);
+			expect(node.mappers[0].localId).toBe('m1');
+		});
+	});
+
+	describe('node <-> form conversions', () => {
+		const node: DraftGroup = {
+			localId: 'g1',
+			serverId: 'g1',
+			name: 'OpenAI',
+			attributes: ['gen_ai.'],
+			resource: ['service.name'],
+			enabled: true,
+			mappers: [],
+		};
+
+		it('builds a form draft from a group node', () => {
+			expect(groupDraftFromNode(node)).toStrictEqual({
+				id: 'g1',
+				name: 'OpenAI',
+				attributes: ['gen_ai.'],
+				resource: ['service.name'],
+				enabled: true,
+			});
+		});
+
+		it('updates an existing group node, preserving its ids and mappers', () => {
+			const existing = { ...node, mappers: [buildDraftMapper(mapper)] };
+			const updated = nodeFromGroupDraft(
+				{
+					id: 'g1',
+					name: '  Renamed  ',
+					attributes: ['a', '', 'a'],
+					resource: ['service.name', ''],
+					enabled: false,
+				},
+				existing,
+			);
+			expect(updated.serverId).toBe('g1');
+			expect(updated.name).toBe('Renamed');
+			expect(updated.attributes).toStrictEqual(['a']);
+			expect(updated.resource).toStrictEqual(['service.name']);
+			expect(updated.mappers).toHaveLength(1);
+		});
+
+		it('round-trips a mapper node through the form and de-dups sources by key', () => {
+			const draft = mapperDraftFromNode(buildDraftMapper(mapper));
+			expect(draft.id).toBe('m1');
+			expect(draft.fieldContext).toBe(FieldContext.attribute);
+
+			const created = nodeFromMapperDraft(
+				mapperDraft({
+					id: null,
+					sources: [src('a', MapperOperation.move), src(' '), src('a'), src('b')],
+				}),
+			);
+			expect(created.serverId).toBeNull();
+			expect(created.localId).toMatch(/^local-mapper-/);
+			expect(created.sources).toStrictEqual([
+				{
+					key: 'a',
+					context: FieldContext.attribute,
+					operation: MapperOperation.move,
+				},
+				{
+					key: 'b',
+					context: FieldContext.attribute,
+					operation: MapperOperation.copy,
+				},
+			]);
+		});
+	});
+
+	describe('validation', () => {
+		it('validates a mapper draft (name + at least one keyed source)', () => {
+			expect(isMapperDraftValid(EMPTY_MAPPER_DRAFT)).toBe(false);
+			expect(
+				isMapperDraftValid(mapperDraft({ name: 'x', sources: [src(' ')] })),
+			).toBe(false);
+			expect(
+				isMapperDraftValid(mapperDraft({ name: 'x', sources: [src('a')] })),
+			).toBe(true);
+		});
+
+		it('validates a group draft (name only)', () => {
+			expect(isGroupDraftValid(EMPTY_GROUP_DRAFT)).toBe(false);
+			expect(
+				isGroupDraftValid({
+					id: null,
+					name: 'g',
+					attributes: [],
+					resource: [],
+					enabled: true,
+				}),
+			).toBe(true);
+		});
+	});
+
+	describe('API payload builders', () => {
+		it('derives descending priorities and carries per-source context/operation', () => {
+			const payload = buildPostableMapper(
+				mapperDraft({
+					name: ' target ',
+					fieldContext: FieldContext.resource,
+					sources: [
+						src('a', MapperOperation.move),
+						src('b', MapperOperation.copy, FieldContext.resource),
+					],
+				}),
+			);
+			expect(payload.name).toBe('target');
+			expect(payload.fieldContext).toBe(FieldContext.resource);
+			expect(payload.config.sources).toStrictEqual([
+				{
+					key: 'a',
+					context: FieldContext.attribute,
+					operation: MapperOperation.move,
+					priority: 2,
+				},
+				{
+					key: 'b',
+					context: FieldContext.resource,
+					operation: MapperOperation.copy,
+					priority: 1,
+				},
+			]);
+		});
+
+		it('omits name on the mapper update payload (immutable target)', () => {
+			const payload = buildUpdatableMapper(
+				mapperDraft({
+					id: 'm1',
+					enabled: false,
+					fieldContext: FieldContext.resource,
+				}),
+			);
+			expect(payload).not.toHaveProperty('name');
+			expect(payload.enabled).toBe(false);
+			expect(payload.fieldContext).toBe(FieldContext.resource);
+		});
+
+		it('cleans both attribute and resource condition keys', () => {
+			const payload = buildPostableGroup({
+				id: null,
+				name: 'g',
+				attributes: ['gen_ai.', '', 'gen_ai.'],
+				resource: ['service.name', '  ', 'service.name'],
+				enabled: true,
+			});
+			expect(payload.condition).toStrictEqual({
+				attributes: ['gen_ai.'],
+				resource: ['service.name'],
+			});
+		});
+	});
+});

frontend/src/container/LLMObservabilityAttributeMapping/saveDraft.ts

@@ -0,0 +1,185 @@
+import {
+	SpantypesPostableSpanMapperDTO,
+	SpantypesPostableSpanMapperGroupDTO,
+	SpantypesUpdatableSpanMapperDTO,
+	SpantypesUpdatableSpanMapperGroupDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+import { DraftGroup, DraftMapper, SourceConfig } from './types';
+import {
+	buildPostableGroup,
+	buildPostableMapper,
+	buildUpdatableGroup,
+	buildUpdatableMapper,
+} from './utils';
+
+// Thin persistence surface the store wires to the generated mutations.
+// createGroup returns the new server id so its mappers can be created under it.
+export interface SaveMutations {
+	createGroup: (data: SpantypesPostableSpanMapperGroupDTO) => Promise<string>;
+	updateGroup: (
+		groupId: string,
+		data: SpantypesUpdatableSpanMapperGroupDTO,
+	) => Promise<void>;
+	deleteGroup: (groupId: string) => Promise<void>;
+	createMapper: (
+		groupId: string,
+		data: SpantypesPostableSpanMapperDTO,
+	) => Promise<void>;
+	updateMapper: (
+		groupId: string,
+		mapperId: string,
+		data: SpantypesUpdatableSpanMapperDTO,
+	) => Promise<void>;
+	deleteMapper: (groupId: string, mapperId: string) => Promise<void>;
+}
+
+function arraysEqual(a: string[], b: string[]): boolean {
+	return a.length === b.length && a.every((value, index) => value === b[index]);
+}
+
+function sourcesEqual(a: SourceConfig[], b: SourceConfig[]): boolean {
+	return (
+		a.length === b.length &&
+		a.every(
+			(source, index) =>
+				source.key === b[index].key &&
+				source.context === b[index].context &&
+				source.operation === b[index].operation,
+		)
+	);
+}
+
+function groupChanged(snapshot: DraftGroup, draft: DraftGroup): boolean {
+	return (
+		snapshot.name !== draft.name ||
+		snapshot.enabled !== draft.enabled ||
+		!arraysEqual(snapshot.attributes, draft.attributes) ||
+		!arraysEqual(snapshot.resource, draft.resource)
+	);
+}
+
+function mapperChanged(snapshot: DraftMapper, draft: DraftMapper): boolean {
+	return (
+		snapshot.enabled !== draft.enabled ||
+		snapshot.fieldContext !== draft.fieldContext ||
+		!sourcesEqual(snapshot.sources, draft.sources)
+	);
+}
+
+function groupDraftOf(
+	node: DraftGroup,
+): Parameters<typeof buildPostableGroup>[0] {
+	return {
+		id: node.serverId,
+		name: node.name,
+		attributes: node.attributes,
+		resource: node.resource,
+		enabled: node.enabled,
+	};
+}
+
+function mapperDraftOf(
+	node: DraftMapper,
+): Parameters<typeof buildPostableMapper>[0] {
+	return {
+		id: node.serverId,
+		name: node.name,
+		fieldContext: node.fieldContext,
+		sources: node.sources,
+		enabled: node.enabled,
+	};
+}
+
+async function persistMappers(
+	groupServerId: string,
+	snapshotMappers: DraftMapper[],
+	draftMappers: DraftMapper[],
+	m: SaveMutations,
+): Promise<void> {
+	const snapById = new Map(
+		snapshotMappers
+			.filter((mapper) => mapper.serverId)
+			.map((mapper) => [mapper.serverId as string, mapper]),
+	);
+	const draftServerIds = new Set(
+		draftMappers
+			.filter((mapper) => mapper.serverId)
+			.map((mapper) => mapper.serverId as string),
+	);
+
+	// Deleted mappers.
+	await Promise.all(
+		snapshotMappers
+			.filter((mapper) => mapper.serverId && !draftServerIds.has(mapper.serverId))
+			.map((mapper) => m.deleteMapper(groupServerId, mapper.serverId as string)),
+	);
+
+	// Created + updated mappers (sequential to keep ordering deterministic).
+	for (const mapper of draftMappers) {
+		if (!mapper.serverId) {
+			// eslint-disable-next-line no-await-in-loop
+			await m.createMapper(
+				groupServerId,
+				buildPostableMapper(mapperDraftOf(mapper)),
+			);
+		} else {
+			const snap = snapById.get(mapper.serverId);
+			if (!snap || mapperChanged(snap, mapper)) {
+				// eslint-disable-next-line no-await-in-loop
+				await m.updateMapper(
+					groupServerId,
+					mapper.serverId,
+					buildUpdatableMapper(mapperDraftOf(mapper)),
+				);
+			}
+		}
+	}
+}
+
+// Diffs the staged tree against the server snapshot and issues the minimal set
+// of create/update/delete calls to reconcile them.
+export async function persistDraft(
+	snapshot: DraftGroup[],
+	draft: DraftGroup[],
+	m: SaveMutations,
+): Promise<void> {
+	const snapById = new Map(
+		snapshot
+			.filter((group) => group.serverId)
+			.map((group) => [group.serverId as string, group]),
+	);
+	const draftServerIds = new Set(
+		draft
+			.filter((group) => group.serverId)
+			.map((group) => group.serverId as string),
+	);
+
+	// Deleted groups (cascades mappers server-side).
+	await Promise.all(
+		snapshot
+			.filter((group) => group.serverId && !draftServerIds.has(group.serverId))
+			.map((group) => m.deleteGroup(group.serverId as string)),
+	);
+
+	for (const group of draft) {
+		if (!group.serverId) {
+			// eslint-disable-next-line no-await-in-loop
+			const newId = await m.createGroup(buildPostableGroup(groupDraftOf(group)));
+			// eslint-disable-next-line no-await-in-loop
+			await persistMappers(newId, [], group.mappers, m);
+			continue;
+		}
+
+		const snap = snapById.get(group.serverId);
+		if (!snap || groupChanged(snap, group)) {
+			// eslint-disable-next-line no-await-in-loop
+			await m.updateGroup(
+				group.serverId,
+				buildUpdatableGroup(groupDraftOf(group)),
+			);
+		}
+		// eslint-disable-next-line no-await-in-loop
+		await persistMappers(group.serverId, snap?.mappers ?? [], group.mappers, m);
+	}
+}

frontend/src/container/LLMObservabilityAttributeMapping/types.ts

@@ -0,0 +1,84 @@
+import {
+	SpantypesFieldContextDTO,
+	SpantypesSpanMapperConfigDTO,
+	SpantypesSpanMapperDTO,
+	SpantypesSpanMapperGroupConditionDTO,
+	SpantypesSpanMapperGroupDTO,
+	SpantypesSpanMapperOperationDTO,
+	SpantypesSpanMapperSourceDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+export type MapperGroup = SpantypesSpanMapperGroupDTO;
+export type MapperGroupCondition =
+	NonNullable<SpantypesSpanMapperGroupConditionDTO>;
+export type Mapper = SpantypesSpanMapperDTO;
+export type MapperConfig = SpantypesSpanMapperConfigDTO;
+export type MapperSource = SpantypesSpanMapperSourceDTO;
+
+export const FieldContext = SpantypesFieldContextDTO;
+export const MapperOperation = SpantypesSpanMapperOperationDTO;
+
+export type FieldContextValue = SpantypesFieldContextDTO;
+export type MapperOperationValue = SpantypesSpanMapperOperationDTO;
+
+// A single human-readable condition clause shown in the group's Filters column.
+export interface ConditionFilter {
+	context: 'attribute' | 'resource';
+	key: string;
+}
+
+export type MapperDraftMode = 'add' | 'edit';
+
+// One source candidate. `context` is where the key is read from (span
+// attribute or resource); `operation` is move (delete source) or copy (keep).
+// Priority is implicit in list order (top wins), derived on save.
+export interface SourceConfig {
+	key: string;
+	context: SpantypesFieldContextDTO;
+	operation: SpantypesSpanMapperOperationDTO;
+}
+
+// Editable form state for a mapper. `sources` is ordered highest priority
+// first; `fieldContext` is where the standardized target is written.
+export interface MapperDraft {
+	id: string | null;
+	name: string;
+	fieldContext: SpantypesFieldContextDTO;
+	sources: SourceConfig[];
+	enabled: boolean;
+}
+
+// Editable form state for a group. The group runs when a span carries a
+// span-attribute key matching `attributes` OR a resource key matching
+// `resource` (plain substring match).
+export interface GroupDraft {
+	id: string | null;
+	name: string;
+	attributes: string[];
+	resource: string[];
+	enabled: boolean;
+}
+
+// Working-copy node for a mapper. `localId` is a stable client key (the server
+// id once persisted, or a temporary id for not-yet-saved rows). `serverId` is
+// null until the row has been persisted.
+export interface DraftMapper {
+	localId: string;
+	serverId: string | null;
+	name: string;
+	fieldContext: SpantypesFieldContextDTO;
+	sources: SourceConfig[];
+	enabled: boolean;
+}
+
+// Working-copy node for a group, holding its mappers inline so the whole tree
+// can be staged locally and diffed against the server snapshot on save.
+export interface DraftGroup {
+	localId: string;
+	serverId: string | null;
+	name: string;
+	attributes: string[];
+	resource: string[];
+	enabled: boolean;
+	mappers: DraftMapper[];
+}

frontend/src/container/LLMObservabilityAttributeMapping/useAttributeMappingStore.ts

@@ -0,0 +1,287 @@
+import { useCallback, useEffect, useMemo, useState } from 'react';
+import { toast } from '@signozhq/ui/sonner';
+import { useQueries, useQueryClient } from 'react-query';
+import {
+	getListSpanMappersQueryOptions,
+	useCreateSpanMapper,
+	useCreateSpanMapperGroup,
+	useDeleteSpanMapper,
+	useDeleteSpanMapperGroup,
+	useListSpanMapperGroups,
+	useUpdateSpanMapper,
+	useUpdateSpanMapperGroup,
+} from 'api/generated/services/spanmapper';
+
+import { persistDraft, SaveMutations } from './saveDraft';
+import {
+	DraftGroup,
+	GroupDraft,
+	Mapper,
+	MapperDraft,
+	MapperGroup,
+} from './types';
+import {
+	buildDraftGroup,
+	nodeFromGroupDraft,
+	nodeFromMapperDraft,
+} from './utils';
+
+const GROUPS_KEY_PREFIX = '/api/v1/span_mapper_groups';
+
+function clone(groups: DraftGroup[]): DraftGroup[] {
+	return JSON.parse(JSON.stringify(groups)) as DraftGroup[];
+}
+
+export interface AttributeMappingStore {
+	groups: DraftGroup[];
+	isLoading: boolean;
+	isError: boolean;
+	isDirty: boolean;
+	isSaving: boolean;
+	saveError: string | null;
+	upsertGroup: (draft: GroupDraft) => void;
+	removeGroup: (localId: string) => void;
+	toggleGroup: (localId: string, enabled: boolean) => void;
+	upsertMapper: (groupLocalId: string, draft: MapperDraft) => void;
+	removeMapper: (groupLocalId: string, mapperLocalId: string) => void;
+	toggleMapper: (
+		groupLocalId: string,
+		mapperLocalId: string,
+		enabled: boolean,
+	) => void;
+	save: () => Promise<void>;
+	discard: () => void;
+}
+
+export function useAttributeMappingStore(): AttributeMappingStore {
+	const queryClient = useQueryClient();
+
+	const groupsQuery = useListSpanMapperGroups();
+	const serverGroups: MapperGroup[] = useMemo(
+		() => groupsQuery.data?.data?.items ?? [],
+		[groupsQuery.data],
+	);
+
+	const mapperQueries = useQueries(
+		serverGroups.map((group) =>
+			getListSpanMappersQueryOptions({ groupId: group.id }),
+		),
+	);
+
+	const mappersReady = mapperQueries.every((query) => !query.isLoading);
+	const ready = !groupsQuery.isLoading && mappersReady;
+
+	// Stable signature so the snapshot only rebuilds when server data changes.
+	const dataSignature = useMemo(
+		() =>
+			JSON.stringify(serverGroups) +
+			JSON.stringify(mapperQueries.map((query) => query.data?.data?.items ?? [])),
+		[serverGroups, mapperQueries],
+	);
+
+	const snapshot = useMemo<DraftGroup[]>(() => {
+		if (!ready) {
+			return [];
+		}
+		return serverGroups.map((group, index) =>
+			buildDraftGroup(
+				group,
+				(mapperQueries[index]?.data?.data?.items ?? []) as unknown as Mapper[],
+			),
+		);
+		// eslint-disable-next-line react-hooks/exhaustive-deps
+	}, [ready, dataSignature]);
+
+	const [draft, setDraft] = useState<DraftGroup[] | null>(null);
+
+	// Initialise the working copy once data is ready (and re-init after a save
+	// clears it). Never clobbers in-flight edits — only runs when draft is null.
+	useEffect(() => {
+		if (ready && draft === null) {
+			setDraft(clone(snapshot));
+		}
+	}, [ready, draft, snapshot]);
+
+	const [isSaving, setIsSaving] = useState(false);
+	const [saveError, setSaveError] = useState<string | null>(null);
+
+	const { mutateAsync: createGroup } = useCreateSpanMapperGroup();
+	const { mutateAsync: updateGroup } = useUpdateSpanMapperGroup();
+	const { mutateAsync: deleteGroup } = useDeleteSpanMapperGroup();
+	const { mutateAsync: createMapper } = useCreateSpanMapper();
+	const { mutateAsync: updateMapper } = useUpdateSpanMapper();
+	const { mutateAsync: deleteMapper } = useDeleteSpanMapper();
+
+	const mutations: SaveMutations = useMemo(
+		() => ({
+			createGroup: async (data): Promise<string> => {
+				const result = await createGroup({ data });
+				return result.data.id;
+			},
+			updateGroup: async (groupId, data): Promise<void> => {
+				await updateGroup({ pathParams: { groupId }, data });
+			},
+			deleteGroup: async (groupId): Promise<void> => {
+				await deleteGroup({ pathParams: { groupId } });
+			},
+			createMapper: async (groupId, data): Promise<void> => {
+				await createMapper({ pathParams: { groupId }, data });
+			},
+			updateMapper: async (groupId, mapperId, data): Promise<void> => {
+				await updateMapper({ pathParams: { groupId, mapperId }, data });
+			},
+			deleteMapper: async (groupId, mapperId): Promise<void> => {
+				await deleteMapper({ pathParams: { groupId, mapperId } });
+			},
+		}),
+		[
+			createGroup,
+			updateGroup,
+			deleteGroup,
+			createMapper,
+			updateMapper,
+			deleteMapper,
+		],
+	);
+
+	const upsertGroup = useCallback((groupDraft: GroupDraft): void => {
+		setDraft((prev) => {
+			const groups = prev ?? [];
+			if (groupDraft.id) {
+				return groups.map((group) =>
+					group.localId === groupDraft.id
+						? nodeFromGroupDraft(groupDraft, group)
+						: group,
+				);
+			}
+			return [...groups, nodeFromGroupDraft(groupDraft)];
+		});
+	}, []);
+
+	const removeGroup = useCallback((localId: string): void => {
+		setDraft((prev) => (prev ?? []).filter((group) => group.localId !== localId));
+	}, []);
+
+	const toggleGroup = useCallback((localId: string, enabled: boolean): void => {
+		setDraft((prev) =>
+			(prev ?? []).map((group) =>
+				group.localId === localId ? { ...group, enabled } : group,
+			),
+		);
+	}, []);
+
+	const upsertMapper = useCallback(
+		(groupLocalId: string, mapperDraft: MapperDraft): void => {
+			setDraft((prev) =>
+				(prev ?? []).map((group) => {
+					if (group.localId !== groupLocalId) {
+						return group;
+					}
+					if (mapperDraft.id) {
+						return {
+							...group,
+							mappers: group.mappers.map((mapper) =>
+								mapper.localId === mapperDraft.id
+									? nodeFromMapperDraft(mapperDraft, mapper)
+									: mapper,
+							),
+						};
+					}
+					return {
+						...group,
+						mappers: [...group.mappers, nodeFromMapperDraft(mapperDraft)],
+					};
+				}),
+			);
+		},
+		[],
+	);
+
+	const removeMapper = useCallback(
+		(groupLocalId: string, mapperLocalId: string): void => {
+			setDraft((prev) =>
+				(prev ?? []).map((group) =>
+					group.localId === groupLocalId
+						? {
+								...group,
+								mappers: group.mappers.filter(
+									(mapper) => mapper.localId !== mapperLocalId,
+								),
+							}
+						: group,
+				),
+			);
+		},
+		[],
+	);
+
+	const toggleMapper = useCallback(
+		(groupLocalId: string, mapperLocalId: string, enabled: boolean): void => {
+			setDraft((prev) =>
+				(prev ?? []).map((group) =>
+					group.localId === groupLocalId
+						? {
+								...group,
+								mappers: group.mappers.map((mapper) =>
+									mapper.localId === mapperLocalId ? { ...mapper, enabled } : mapper,
+								),
+							}
+						: group,
+				),
+			);
+		},
+		[],
+	);
+
+	const discard = useCallback((): void => {
+		setSaveError(null);
+		setDraft(clone(snapshot));
+	}, [snapshot]);
+
+	const save = useCallback(async (): Promise<void> => {
+		if (!draft) {
+			return;
+		}
+		setIsSaving(true);
+		setSaveError(null);
+		try {
+			await persistDraft(snapshot, draft, mutations);
+			await queryClient.invalidateQueries({
+				predicate: (query) =>
+					typeof query.queryKey?.[0] === 'string' &&
+					(query.queryKey[0] as string).startsWith(GROUPS_KEY_PREFIX),
+			});
+			// Re-initialise the working copy from the freshly-fetched server data.
+			setDraft(null);
+			toast.success('Attribute mapping changes saved');
+		} catch (error) {
+			const message = error instanceof Error ? error.message : 'Save failed';
+			setSaveError(message);
+			toast.error(`Failed to save changes: ${message}`);
+		} finally {
+			setIsSaving(false);
+		}
+	}, [draft, snapshot, mutations, queryClient]);
+
+	const isDirty = useMemo(
+		() => draft !== null && JSON.stringify(draft) !== JSON.stringify(snapshot),
+		[draft, snapshot],
+	);
+
+	return {
+		groups: draft ?? [],
+		isLoading: !ready || draft === null,
+		isError: groupsQuery.isError,
+		isDirty,
+		isSaving,
+		saveError,
+		upsertGroup,
+		removeGroup,
+		toggleGroup,
+		upsertMapper,
+		removeMapper,
+		toggleMapper,
+		save,
+		discard,
+	};
+}

frontend/src/container/LLMObservabilityAttributeMapping/useGroupFormDrawer.ts

@@ -0,0 +1,40 @@
+import { useCallback, useState } from 'react';
+
+import { DraftGroup, GroupDraft, MapperDraftMode } from './types';
+import { EMPTY_GROUP_DRAFT, groupDraftFromNode } from './utils';
+
+interface UseGroupFormDrawerResult {
+	isOpen: boolean;
+	mode: MapperDraftMode;
+	draft: GroupDraft;
+	setDraft: (next: GroupDraft) => void;
+	openForAdd: () => void;
+	openForEdit: (group: DraftGroup) => void;
+	close: () => void;
+}
+
+// Form state for the group drawer. Persistence is staged through the store,
+// so this hook only owns open/draft/mode.
+export function useGroupFormDrawer(): UseGroupFormDrawerResult {
+	const [isOpen, setIsOpen] = useState<boolean>(false);
+	const [mode, setMode] = useState<MapperDraftMode>('add');
+	const [draft, setDraft] = useState<GroupDraft>(EMPTY_GROUP_DRAFT);
+
+	const openForAdd = useCallback((): void => {
+		setMode('add');
+		setDraft(EMPTY_GROUP_DRAFT);
+		setIsOpen(true);
+	}, []);
+
+	const openForEdit = useCallback((group: DraftGroup): void => {
+		setMode('edit');
+		setDraft(groupDraftFromNode(group));
+		setIsOpen(true);
+	}, []);
+
+	const close = useCallback((): void => {
+		setIsOpen(false);
+	}, []);
+
+	return { isOpen, mode, draft, setDraft, openForAdd, openForEdit, close };
+}

frontend/src/container/LLMObservabilityAttributeMapping/useMapperFormDrawer.ts

@@ -0,0 +1,40 @@
+import { useCallback, useState } from 'react';
+
+import { DraftMapper, MapperDraft, MapperDraftMode } from './types';
+import { EMPTY_MAPPER_DRAFT, mapperDraftFromNode } from './utils';
+
+interface UseMapperFormDrawerResult {
+	isOpen: boolean;
+	mode: MapperDraftMode;
+	draft: MapperDraft;
+	setDraft: (next: MapperDraft) => void;
+	openForAdd: () => void;
+	openForEdit: (mapper: DraftMapper) => void;
+	close: () => void;
+}
+
+// Form state for the mapper drawer. Persistence is staged through the store,
+// so this hook only owns open/draft/mode.
+export function useMapperFormDrawer(): UseMapperFormDrawerResult {
+	const [isOpen, setIsOpen] = useState<boolean>(false);
+	const [mode, setMode] = useState<MapperDraftMode>('add');
+	const [draft, setDraft] = useState<MapperDraft>(EMPTY_MAPPER_DRAFT);
+
+	const openForAdd = useCallback((): void => {
+		setMode('add');
+		setDraft(EMPTY_MAPPER_DRAFT);
+		setIsOpen(true);
+	}, []);
+
+	const openForEdit = useCallback((mapper: DraftMapper): void => {
+		setMode('edit');
+		setDraft(mapperDraftFromNode(mapper));
+		setIsOpen(true);
+	}, []);
+
+	const close = useCallback((): void => {
+		setIsOpen(false);
+	}, []);
+
+	return { isOpen, mode, draft, setDraft, openForAdd, openForEdit, close };
+}

frontend/src/container/LLMObservabilityAttributeMapping/utils.ts

@@ -0,0 +1,262 @@
+import {
+	SpantypesPostableSpanMapperDTO,
+	SpantypesPostableSpanMapperGroupDTO,
+	SpantypesUpdatableSpanMapperDTO,
+	SpantypesUpdatableSpanMapperGroupDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import dayjs from 'dayjs';
+import { v4 as uuid } from 'uuid';
+
+import {
+	ConditionFilter,
+	DraftGroup,
+	DraftMapper,
+	FieldContext,
+	GroupDraft,
+	Mapper,
+	MapperDraft,
+	MapperGroup,
+	MapperOperation,
+	SourceConfig,
+} from './types';
+
+// Client-side id for not-yet-persisted rows. Prefixed so it never collides
+// with a server UUID and is easy to spot in logs.
+export function genLocalId(prefix: 'group' | 'mapper'): string {
+	return `local-${prefix}-${uuid()}`;
+}
+
+// Trimmed, de-duplicated, non-empty keys preserving input order.
+export function cleanKeys(keys: string[]): string[] {
+	const seen = new Set<string>();
+	const result: string[] = [];
+	keys.forEach((raw) => {
+		const key = raw.trim();
+		if (key && !seen.has(key)) {
+			seen.add(key);
+			result.push(key);
+		}
+	});
+	return result;
+}
+
+// Display clauses for a group's staged condition keys (span attribute keys
+// first, then resource keys).
+export function conditionFiltersFromGroup(group: {
+	attributes: string[];
+	resource: string[];
+}): ConditionFilter[] {
+	return [
+		...group.attributes.map((key) => ({ context: 'attribute' as const, key })),
+		...group.resource.map((key) => ({ context: 'resource' as const, key })),
+	];
+}
+
+// Source configs for a mapper, highest priority first (first match wins at
+// evaluation time).
+export function getMapperSources(mapper: Mapper): SourceConfig[] {
+	const sources = mapper.config?.sources ?? [];
+	return [...sources]
+		.sort((a, b) => b.priority - a.priority)
+		.map((source) => ({
+			key: source.key,
+			context: source.context,
+			operation: source.operation,
+		}));
+}
+
+// A blank source row. New sources default to `move` so the original key is
+// removed once standardized (the PRD default — minimizes duplication).
+export function createEmptySource(): SourceConfig {
+	return {
+		key: '',
+		context: FieldContext.attribute,
+		operation: MapperOperation.move,
+	};
+}
+
+export function formatTimestamp(iso?: string): string {
+	if (!iso) {
+		return '—';
+	}
+	return dayjs(iso).format('MMM D, YYYY HH:mm');
+}
+
+export const EMPTY_MAPPER_DRAFT: MapperDraft = {
+	id: null,
+	name: '',
+	fieldContext: FieldContext.attribute,
+	sources: [createEmptySource()],
+	enabled: true,
+};
+
+// Trimmed, de-duplicated (by key), non-empty sources in priority order,
+// preserving each source's context and operation.
+export function getCleanSources(draft: MapperDraft): SourceConfig[] {
+	const seen = new Set<string>();
+	const result: SourceConfig[] = [];
+	draft.sources.forEach((source) => {
+		const key = source.key.trim();
+		if (key && !seen.has(key)) {
+			seen.add(key);
+			result.push({ ...source, key });
+		}
+	});
+	return result;
+}
+
+export function isMapperDraftValid(draft: MapperDraft): boolean {
+	return draft.name.trim().length > 0 && getCleanSources(draft).length > 0;
+}
+
+// Priority is derived from list order so the first row wins.
+function buildSources(
+	draft: MapperDraft,
+): SpantypesPostableSpanMapperDTO['config']['sources'] {
+	const sources = getCleanSources(draft);
+	return sources.map((source, index) => ({
+		key: source.key,
+		context: source.context,
+		operation: source.operation,
+		priority: sources.length - index,
+	}));
+}
+
+export function buildPostableMapper(
+	draft: MapperDraft,
+): SpantypesPostableSpanMapperDTO {
+	return {
+		name: draft.name.trim(),
+		fieldContext: draft.fieldContext,
+		enabled: draft.enabled,
+		config: { sources: buildSources(draft) },
+	};
+}
+
+// The target name is immutable on update (UpdatableSpanMapper has no name).
+export function buildUpdatableMapper(
+	draft: MapperDraft,
+): SpantypesUpdatableSpanMapperDTO {
+	return {
+		fieldContext: draft.fieldContext,
+		enabled: draft.enabled,
+		config: { sources: buildSources(draft) },
+	};
+}
+
+export const EMPTY_GROUP_DRAFT: GroupDraft = {
+	id: null,
+	name: '',
+	attributes: [''],
+	resource: [],
+	enabled: true,
+};
+
+export function isGroupDraftValid(draft: GroupDraft): boolean {
+	return draft.name.trim().length > 0;
+}
+
+export function buildPostableGroup(
+	draft: GroupDraft,
+): SpantypesPostableSpanMapperGroupDTO {
+	return {
+		name: draft.name.trim(),
+		enabled: draft.enabled,
+		condition: {
+			attributes: cleanKeys(draft.attributes),
+			resource: cleanKeys(draft.resource),
+		},
+	};
+}
+
+// A full group payload is also a valid partial-update payload (all updatable
+// fields are present), so we reuse the postable builder.
+export function buildUpdatableGroup(
+	draft: GroupDraft,
+): SpantypesUpdatableSpanMapperGroupDTO {
+	return buildPostableGroup(draft);
+}
+
+// ---- working-copy (draft tree) helpers ----
+
+export function buildDraftMapper(mapper: Mapper): DraftMapper {
+	return {
+		localId: mapper.id,
+		serverId: mapper.id,
+		name: mapper.name,
+		fieldContext: mapper.fieldContext,
+		sources: getMapperSources(mapper),
+		enabled: mapper.enabled,
+	};
+}
+
+export function buildDraftGroup(
+	group: MapperGroup,
+	mappers: Mapper[],
+): DraftGroup {
+	return {
+		localId: group.id,
+		serverId: group.id,
+		name: group.name,
+		attributes: group.condition?.attributes ?? [],
+		resource: group.condition?.resource ?? [],
+		enabled: group.enabled,
+		mappers: mappers.map(buildDraftMapper),
+	};
+}
+
+// DraftGroup -> editable form state (id carries the localId).
+export function groupDraftFromNode(group: DraftGroup): GroupDraft {
+	return {
+		id: group.localId,
+		name: group.name,
+		attributes: group.attributes.length > 0 ? group.attributes : [''],
+		resource: group.resource,
+		enabled: group.enabled,
+	};
+}
+
+// DraftMapper -> editable form state (id carries the localId).
+export function mapperDraftFromNode(mapper: DraftMapper): MapperDraft {
+	return {
+		id: mapper.localId,
+		name: mapper.name,
+		fieldContext: mapper.fieldContext,
+		sources:
+			mapper.sources.length > 0
+				? mapper.sources.map((source) => ({ ...source }))
+				: [createEmptySource()],
+		enabled: mapper.enabled,
+	};
+}
+
+// Form state -> working-copy node. Reuses cleanKeys/getCleanSourceKeys so the
+// staged tree already holds normalized values.
+export function nodeFromGroupDraft(
+	draft: GroupDraft,
+	existing?: DraftGroup,
+): DraftGroup {
+	return {
+		localId: existing?.localId ?? genLocalId('group'),
+		serverId: existing?.serverId ?? null,
+		name: draft.name.trim(),
+		attributes: cleanKeys(draft.attributes),
+		resource: cleanKeys(draft.resource),
+		enabled: draft.enabled,
+		mappers: existing?.mappers ?? [],
+	};
+}
+
+export function nodeFromMapperDraft(
+	draft: MapperDraft,
+	existing?: DraftMapper,
+): DraftMapper {
+	return {
+		localId: existing?.localId ?? genLocalId('mapper'),
+		serverId: existing?.serverId ?? null,
+		name: draft.name.trim(),
+		fieldContext: draft.fieldContext,
+		sources: getCleanSources(draft),
+		enabled: draft.enabled,
+	};
+}

frontend/src/container/LLMObservabilityModelPricing/LLMObservabilityModelPricing.styles.scss

@@ -0,0 +1,172 @@
+.llm-observability-model-pricing {
+	display: flex;
+	flex-direction: column;
+	gap: 16px;
+	padding: 24px 32px;
+
+	.page-header {
+		display: flex;
+		align-items: flex-start;
+		justify-content: space-between;
+		gap: 16px;
+
+		&__title {
+			h1 {
+				margin: 0;
+				font-size: 22px;
+				font-weight: 600;
+			}
+
+			p {
+				margin: 4px 0 0;
+				color: var(--bg-vanilla-400);
+				font-size: 13px;
+			}
+		}
+
+		&__actions {
+			display: flex;
+			gap: 8px;
+		}
+	}
+
+	.page-tabs {
+		.ant-tabs-nav {
+			margin-bottom: 0;
+		}
+	}
+
+	.filters-bar {
+		display: flex;
+		gap: 12px;
+		align-items: center;
+
+		&__search {
+			flex: 1;
+			max-width: 360px;
+		}
+
+		&__source,
+		&__currency {
+			min-width: 160px;
+		}
+
+		&__add {
+			margin-left: auto;
+		}
+	}
+
+	.page-error {
+		padding: 12px 16px;
+		border-radius: 4px;
+		background: rgba(255, 90, 90, 0.08);
+		color: var(--bg-cherry-400);
+		font-size: 13px;
+	}
+
+	.page-pagination {
+		display: flex;
+		justify-content: flex-end;
+		margin-top: 8px;
+	}
+
+	.page-footer {
+		color: var(--bg-vanilla-400);
+		font-size: 12px;
+	}
+}
+
+.model-costs-table {
+	.ant-table-thead > tr > th {
+		color: var(--bg-vanilla-400) !important;
+		font-size: 11px;
+		font-weight: 600;
+		letter-spacing: 0.08em;
+		text-transform: uppercase;
+	}
+
+	.ant-table-tbody > tr > td {
+		color: var(--bg-vanilla-400);
+	}
+
+	.model-cell {
+		display: flex;
+		flex-direction: column;
+		gap: 2px;
+		// Allow the flex children to shrink below their content width so the
+		// table's fixed-layout / nowrap cells truncate instead of overflowing
+		// into the Provider column.
+		min-width: 0;
+
+		&__name {
+			color: var(--bg-vanilla-100);
+			font-weight: 600;
+		}
+
+		&__name,
+		&__canonical-id {
+			max-width: 100%;
+			overflow: hidden;
+			text-overflow: ellipsis;
+			white-space: nowrap;
+		}
+
+		&__canonical-id {
+			color: var(--bg-vanilla-400);
+			font-family: var(--code-font-family, monospace);
+			font-size: 12px;
+		}
+	}
+
+	.price-cell {
+		font-family: var(--code-font-family, monospace);
+		color: var(--bg-vanilla-400);
+	}
+
+	.extra-buckets {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 6px;
+
+		&__chip {
+			display: inline-flex;
+			align-items: center;
+			gap: 6px;
+			margin: 0;
+		}
+
+		&__key {
+			font-family: var(--code-font-family, monospace);
+			font-size: 12px;
+		}
+
+		&__price {
+			font-family: var(--code-font-family, monospace);
+			font-weight: 600;
+		}
+	}
+
+	.muted {
+		color: var(--bg-vanilla-400);
+	}
+
+	.source-badge {
+		margin: 0;
+
+		&--auto {
+			background: rgba(78, 116, 248, 0.12);
+			color: var(--bg-robin-400);
+			border-color: rgba(78, 116, 248, 0.24);
+		}
+
+		&--override {
+			background: rgba(245, 175, 25, 0.12);
+			color: var(--bg-amber-400);
+			border-color: rgba(245, 175, 25, 0.24);
+		}
+	}
+
+	&__row--selected {
+		background: rgba(78, 116, 248, 0.06);
+	}
+}

frontend/src/container/LLMObservabilityModelPricing/LLMObservabilityModelPricing.tsx

@@ -0,0 +1,180 @@
+import { useMemo, useState } from 'react';
+import { Button } from '@signozhq/ui/button';
+import { Input } from '@signozhq/ui/input';
+import { Pagination } from '@signozhq/ui/pagination';
+import { SelectSimple } from '@signozhq/ui/select';
+import { Tabs } from '@signozhq/ui/tabs';
+import { Plus, Search } from '@signozhq/icons';
+import { useListLLMPricingRules } from 'api/generated/services/llmpricingrules';
+import useComponentPermission from 'hooks/useComponentPermission';
+import { useAppContext } from 'providers/App/App';
+
+import ModelCostDrawer from './ModelCostDrawer';
+import ModelCostsTable from './ModelCostsTable';
+import { useModelCostDrawer } from './useModelCostDrawer';
+import type { PricingRule, SourceFilter } from './types';
+import { filterRules } from './utils';
+
+import './LLMObservabilityModelPricing.styles.scss';
+
+const SOURCE_OPTIONS: { value: SourceFilter; label: string }[] = [
+	{ value: 'all', label: 'Source: All' },
+	{ value: 'auto', label: 'Auto-populated' },
+	{ value: 'override', label: 'User override' },
+];
+
+const CURRENCY_OPTIONS = [
+	{ value: 'USD', label: 'USD' },
+	{ value: 'EUR', label: 'EUR', disabled: true },
+	{ value: 'INR', label: 'INR', disabled: true },
+];
+
+const PAGE_SIZE = 20;
+
+function LLMObservabilityModelPricing(): JSX.Element {
+	const [search, setSearch] = useState<string>('');
+	const [source, setSource] = useState<SourceFilter>('all');
+	const [currency, setCurrency] = useState<string>('USD');
+	const [page, setPage] = useState<number>(1);
+
+	const { data, isLoading, isError } = useListLLMPricingRules({
+		offset: (page - 1) * PAGE_SIZE,
+		limit: PAGE_SIZE,
+	});
+
+	const { user } = useAppContext();
+	const [canManagePricing] = useComponentPermission(
+		['manage_llm_pricing'],
+		user.role,
+	);
+
+	const rules: PricingRule[] = useMemo(() => data?.data?.items || [], [data]);
+	const total = data?.data?.total ?? 0;
+
+	const filteredRules = useMemo(
+		() => filterRules(rules, search, source),
+		[rules, search, source],
+	);
+
+	const drawer = useModelCostDrawer();
+
+	// Search/source filter the current page client-side (the list endpoint only
+	// supports offset/limit), so reset to the first page when they change.
+	const resetToFirstPage = (): void => setPage(1);
+
+	return (
+		<div
+			className="llm-observability-model-pricing"
+			data-testid="llm-observability-model-pricing-page"
+		>
+			<header className="page-header">
+				<div className="page-header__title">
+					<h1>Configuration</h1>
+					<p>Model pricing and cost estimation settings</p>
+				</div>
+			</header>
+
+			<Tabs
+				className="page-tabs"
+				defaultValue="model-costs"
+				items={[
+					{ key: 'model-costs', label: 'Model costs', children: null },
+					{
+						key: 'unpriced-models',
+						label: 'Unpriced models',
+						disabled: true,
+						children: null,
+					},
+				]}
+			/>
+
+			<div className="filters-bar">
+				<Input
+					className="filters-bar__search"
+					placeholder="Search by model or provider…"
+					prefix={<Search size={14} />}
+					value={search}
+					onChange={(event): void => {
+						setSearch(event.target.value);
+						resetToFirstPage();
+					}}
+					testId="search-input"
+				/>
+				<SelectSimple
+					className="filters-bar__source"
+					value={source}
+					onChange={(value): void => {
+						setSource(value as SourceFilter);
+						resetToFirstPage();
+					}}
+					items={SOURCE_OPTIONS}
+					testId="source-select"
+				/>
+				<SelectSimple
+					className="filters-bar__currency"
+					value={currency}
+					onChange={(value): void => setCurrency(value as string)}
+					items={CURRENCY_OPTIONS}
+					testId="currency-select"
+				/>
+				{canManagePricing && (
+					<Button
+						variant="solid"
+						color="primary"
+						className="filters-bar__add"
+						prefix={<Plus size={14} />}
+						onClick={(): void => drawer.openForAdd()}
+						testId="add-model-cost-btn"
+					>
+						Add model cost
+					</Button>
+				)}
+			</div>
+
+			{isError && (
+				<div className="page-error" role="alert">
+					Failed to load pricing rules. Please try again.
+				</div>
+			)}
+
+			<ModelCostsTable
+				rules={filteredRules}
+				isLoading={isLoading}
+				selectedRuleId={drawer.selectedRuleId}
+				canManage={canManagePricing}
+				onEdit={drawer.openForEdit}
+			/>
+
+			{total > PAGE_SIZE && (
+				<Pagination
+					className="page-pagination"
+					total={total}
+					pageSize={PAGE_SIZE}
+					current={page}
+					onPageChange={setPage}
+				/>
+			)}
+
+			<footer className="page-footer">
+				Showing {filteredRules.length} of {total} model{total === 1 ? '' : 's'}
+				{' · '}All prices per 1M tokens (USD)
+			</footer>
+
+			<ModelCostDrawer
+				isOpen={drawer.isOpen}
+				mode={drawer.mode}
+				draft={drawer.draft}
+				setDraft={drawer.setDraft}
+				onClose={drawer.close}
+				onSave={drawer.save}
+				onDelete={drawer.deleteRule}
+				isSaving={drawer.isSaving}
+				isDeleting={drawer.isDeleting}
+				saveError={drawer.saveError}
+				canManage={canManagePricing}
+			/>
+		</div>
+	);
+}
+
+export default LLMObservabilityModelPricing;

frontend/src/container/LLMObservabilityModelPricing/ModelCostDrawer.styles.scss

@@ -0,0 +1,313 @@
+.model-cost-drawer {
+	// Uniform horizontal padding across header / body / footer. The header and
+	// footer read these dialog vars; the body (rendered in drawer-description)
+	// is set directly below.
+	--dialog-header-padding: 20px 24px;
+	--dialog-footer-padding: 16px 24px;
+
+	// The drawer body — children render inside [data-slot='drawer-description']
+	// (this is the @signozhq drawer, not antd, so .ant-drawer-body was a no-op).
+	[data-slot='drawer-description'] {
+		display: flex;
+		flex-direction: column;
+		gap: 18px;
+		padding: 20px 24px;
+	}
+
+	[data-slot='select-content'] {
+		width: var(--radix-select-trigger-width);
+	}
+	display: flex;
+	overflow-y: auto;
+
+	&__title {
+		h3 {
+			margin: 0;
+			font-size: 16px;
+			font-weight: 600;
+		}
+
+		p {
+			margin: 4px 0 0;
+			color: var(--bg-vanilla-400);
+			font-size: 12px;
+		}
+	}
+
+	&__footer {
+		display: flex;
+		align-items: center;
+		justify-content: space-between;
+		// Horizontal padding is provided by the drawer-footer slot var above.
+		padding: 0;
+		width: 100%;
+
+		&-right {
+			display: flex;
+			gap: 8px;
+			margin-left: auto;
+		}
+	}
+
+	.drawer-section {
+		display: flex;
+		flex-direction: column;
+		gap: 6px;
+
+		label,
+		.field-label {
+			font-size: 12px;
+			font-weight: 600;
+			color: var(--bg-vanilla-200);
+		}
+
+		.help {
+			margin: 0;
+			font-size: 11px;
+		}
+	}
+
+	.muted {
+		color: var(--bg-vanilla-400);
+	}
+
+	.required {
+		color: var(--bg-cherry-400);
+	}
+
+	.full-width {
+		width: 100%;
+	}
+
+	.drawer-surface {
+		padding: 14px;
+		border-radius: 6px;
+		background: rgba(255, 255, 255, 0.02);
+		border: 1px solid var(--bg-slate-300);
+
+		&__head {
+			display: flex;
+			align-items: center;
+			justify-content: space-between;
+			margin-bottom: 10px;
+
+			h4 {
+				margin: 0;
+				font-size: 13px;
+				font-weight: 600;
+				text-transform: uppercase;
+				letter-spacing: 0.04em;
+				color: var(--bg-vanilla-300);
+			}
+		}
+	}
+
+	.managed-label {
+		display: inline-flex;
+		align-items: center;
+		gap: 4px;
+		font-size: 11px;
+		color: var(--bg-vanilla-400);
+	}
+
+	.pattern-box {
+		display: flex;
+		flex-direction: column;
+		gap: 12px;
+		padding: 12px;
+		border-radius: 6px;
+		background: rgba(255, 255, 255, 0.02);
+		border: 1px solid var(--bg-slate-300);
+	}
+
+	.pattern-chips {
+		display: flex;
+		flex-wrap: wrap;
+		gap: 6px;
+		min-height: 28px;
+	}
+
+	.pattern-chip {
+		display: inline-flex;
+		align-items: center;
+		gap: 4px;
+
+		&__remove {
+			background: transparent;
+			border: none;
+			padding: 0;
+			margin-left: 2px;
+			cursor: pointer;
+			color: inherit;
+			display: inline-flex;
+			align-items: center;
+
+			&:hover {
+				color: var(--bg-cherry-400);
+			}
+		}
+	}
+
+	.pattern-add {
+		display: flex;
+		gap: 6px;
+	}
+
+	.help {
+		code {
+			padding: 1px 4px;
+			border-radius: 3px;
+			background: rgba(255, 255, 255, 0.06);
+			font-family: var(--code-font-family, monospace);
+			font-size: 10px;
+		}
+	}
+
+	.source-radio-group {
+		// @signozhq/ui's RadioGroupItem defaults its unchecked border to
+		// --l3-background, which matches the drawer surface and makes the dot
+		// invisible. Override with a contrasting border so users can see the
+		// unchecked state.
+		--radio-group-item-border-color: var(--bg-slate-200);
+
+		display: flex;
+		flex-direction: column;
+		gap: 8px;
+		width: 100%;
+
+		// Layout overrides for @signozhq/ui's RadioGroupItem wrapper. The
+		// library injects single-class CSS at runtime (after our bundled
+		// stylesheet loads), so we use a two-class selector to win the
+		// cascade and force the wrapper to lay the dot on the left with the
+		// label text flush beside it.
+		.source-radio {
+			display: flex;
+			flex-direction: row;
+			align-items: flex-start;
+			justify-content: flex-start;
+			gap: 10px;
+			padding: 10px 12px;
+			border-radius: 4px;
+			border: 1px solid transparent;
+			background: rgba(255, 255, 255, 0.02);
+			margin: 0;
+			width: 100%;
+			// Include padding + border in the 100% width so the card fits inside
+			// the SOURCE surface instead of overflowing its right edge.
+			box-sizing: border-box;
+			cursor: pointer;
+			transition:
+				background-color 0.12s ease,
+				border-color 0.12s ease;
+
+			// The radio button itself: keep it fixed-size and aligned with
+			// the title baseline (margin-top compensates for align-items:
+			// flex-start vs the title's line-box).
+			> button[role='radio'] {
+				flex: 0 0 16px;
+				width: 16px;
+				height: 16px;
+				margin-top: 3px;
+			}
+
+			// The library wraps children in a <label>. Make it grow into the
+			// remaining width and reset the .drawer-section label typography
+			// leak (set earlier in this file) so the title/desc divs use
+			// their own styles.
+			> label {
+				flex: 1 1 auto;
+				min-width: 0;
+				display: block;
+				text-align: left;
+				cursor: pointer;
+				font-size: inherit;
+				font-weight: inherit;
+				color: inherit;
+			}
+
+			&__title {
+				font-weight: 600;
+				font-size: 13px;
+				color: var(--bg-vanilla-100);
+			}
+
+			&__desc {
+				margin-top: 2px;
+				font-size: 12px;
+				color: var(--bg-vanilla-400);
+			}
+
+			// Radix RadioGroupItem renders <button data-state="checked|unchecked">.
+			// Use :has() to highlight the wrapper card when its inner button is checked.
+			&.source-radio--auto:has(button[data-state='checked']) {
+				background: rgba(78, 116, 248, 0.1);
+				border-color: rgba(78, 116, 248, 0.3);
+			}
+
+			&.source-radio--override:has(button[data-state='checked']) {
+				background: rgba(245, 175, 25, 0.1);
+				border-color: rgba(245, 175, 25, 0.3);
+			}
+
+			&:hover {
+				background: rgba(255, 255, 255, 0.04);
+			}
+		}
+	}
+
+	.reset-confirm {
+		margin-top: 12px;
+		padding: 12px;
+		border-radius: 4px;
+		background: rgba(78, 116, 248, 0.06);
+		border: 1px solid rgba(78, 116, 248, 0.2);
+
+		p {
+			margin: 0 0 10px;
+			font-size: 12px;
+		}
+
+		&__actions {
+			display: flex;
+			gap: 8px;
+			justify-content: flex-end;
+		}
+	}
+
+	.pricing-grid {
+		display: grid;
+		grid-template-columns: 1fr 1fr;
+		gap: 12px;
+	}
+
+	.pricing-field {
+		display: flex;
+		flex-direction: column;
+		gap: 4px;
+
+		input {
+			width: 100%;
+		}
+	}
+
+	.cache-mode-field {
+		margin-top: 10px;
+	}
+
+	.extras-divider {
+		margin-top: 14px;
+		margin-bottom: 6px;
+		font-size: 11px;
+		text-transform: uppercase;
+		letter-spacing: 0.04em;
+		color: var(--bg-vanilla-400);
+	}
+
+	.drawer-error {
+		padding: 10px 12px;
+		border-radius: 4px;
+		background: rgba(255, 90, 90, 0.08);
+		color: var(--bg-cherry-400);
+		font-size: 12px;
+	}
+}

frontend/src/container/LLMObservabilityModelPricing/ModelCostDrawer.tsx

@@ -0,0 +1,176 @@
+import { Button } from '@signozhq/ui/button';
+import { DrawerWrapper } from '@signozhq/ui/drawer';
+import { Input } from '@signozhq/ui/input';
+import { SelectSimple } from '@signozhq/ui/select';
+import { TooltipSimple } from '@signozhq/ui/tooltip';
+import { Trash2 } from '@signozhq/icons';
+
+import PatternEditor from './PatternEditor';
+import PricingFields from './PricingFields';
+import SourceSelector from './SourceSelector';
+import { PROVIDER_OPTIONS } from './constants';
+import { validateDraft } from './utils';
+import type { DrawerDraft, DrawerMode } from './types';
+import './ModelCostDrawer.styles.scss';
+
+interface ModelCostDrawerProps {
+	isOpen: boolean;
+	mode: DrawerMode;
+	draft: DrawerDraft;
+	setDraft: (next: DrawerDraft) => void;
+	onClose: () => void;
+	onSave: () => void;
+	onDelete: () => void;
+	isSaving: boolean;
+	isDeleting: boolean;
+	saveError: string | null;
+	canManage: boolean;
+}
+
+function ModelCostDrawer({
+	isOpen,
+	mode,
+	draft,
+	setDraft,
+	onClose,
+	onSave,
+	onDelete,
+	isSaving,
+	isDeleting,
+	saveError,
+	canManage,
+}: ModelCostDrawerProps): JSX.Element {
+	// Metadata (model id / provider / patterns / source) is editable by any
+	// manager. Pricing fields are editable only once the user picks "User
+	// override" — auto-populated pricing is managed by SigNoz. Write APIs are
+	// Admin-only, so non-managers can't edit anything.
+	const metadataReadOnly = !canManage;
+	const pricingReadOnly = !canManage || !draft.isOverride;
+
+	const validation = validateDraft(draft, mode);
+	const showValidationTooltip =
+		canManage && !validation.ok && !!validation.message;
+
+	const update = (patch: Partial<DrawerDraft>): void => {
+		setDraft({ ...draft, ...patch });
+	};
+
+	const footer = (
+		<div className="model-cost-drawer__footer">
+			{mode === 'edit' && canManage && (
+				<Button
+					variant="ghost"
+					color="destructive"
+					prefix={<Trash2 size={14} />}
+					onClick={onDelete}
+					loading={isDeleting}
+					testId="drawer-delete-btn"
+				>
+					Delete
+				</Button>
+			)}
+			<div className="model-cost-drawer__footer-right">
+				<Button
+					variant="outlined"
+					color="secondary"
+					onClick={onClose}
+					testId="drawer-cancel-btn"
+				>
+					{canManage ? 'Cancel' : 'Close'}
+				</Button>
+				{canManage && (
+					<TooltipSimple
+						title={showValidationTooltip ? validation.message : ''}
+						withPortal={false}
+					>
+						{/* span wrapper so the tooltip fires even when the button is disabled */}
+						<span className="model-cost-drawer__save-wrap">
+							<Button
+								variant="solid"
+								color="primary"
+								onClick={onSave}
+								loading={isSaving}
+								disabled={!validation.ok}
+								testId="drawer-save-btn"
+							>
+								Save
+							</Button>
+						</span>
+					</TooltipSimple>
+				)}
+			</div>
+		</div>
+	);
+
+	return (
+		<DrawerWrapper
+			open={isOpen}
+			onOpenChange={(open): void => {
+				if (!open) {
+					onClose();
+				}
+			}}
+			direction="right"
+			width="base"
+			className="model-cost-drawer"
+			footer={footer}
+			title={mode === 'edit' ? 'Edit model cost' : 'Add model cost'}
+			subTitle="Pricing computes gen_ai.estimated_total_cost at ingest."
+			drawerHeaderProps={{ className: 'model-cost-drawer__title' }}
+		>
+			<div className="drawer-section">
+				<label htmlFor="billing-model-id">Billing model ID</label>
+				<Input
+					id="billing-model-id"
+					placeholder="e.g. openai:gpt-4o"
+					value={draft.modelName}
+					disabled={mode === 'edit' || metadataReadOnly}
+					onChange={(e): void => update({ modelName: e.target.value })}
+					testId="drawer-model-id-input"
+				/>
+			</div>
+
+			<div className="drawer-section">
+				<label htmlFor="provider-select">Provider</label>
+				<SelectSimple
+					id="provider-select"
+					value={draft.provider}
+					onChange={(value): void => update({ provider: value as string })}
+					items={PROVIDER_OPTIONS}
+					disabled={mode === 'edit' || metadataReadOnly}
+					className="full-width"
+					withPortal={false}
+					testId="drawer-provider-select"
+				/>
+			</div>
+
+			<PatternEditor
+				patterns={draft.patterns}
+				isReadOnly={metadataReadOnly}
+				onChange={(patterns): void => update({ patterns })}
+			/>
+
+			<SourceSelector
+				isOverride={draft.isOverride}
+				isReadOnly={metadataReadOnly}
+				onChange={(isOverride): void => update({ isOverride })}
+			/>
+
+			<PricingFields
+				pricing={draft.pricing}
+				isReadOnly={pricingReadOnly}
+				onChange={(patch): void =>
+					setDraft({ ...draft, pricing: { ...draft.pricing, ...patch } })
+				}
+			/>
+
+			{saveError && (
+				<div className="drawer-error" role="alert">
+					{saveError}
+				</div>
+			)}
+		</DrawerWrapper>
+	);
+}
+
+export default ModelCostDrawer;

frontend/src/container/LLMObservabilityModelPricing/ModelCostsTable.tsx

@@ -0,0 +1,179 @@
+import { Badge } from '@signozhq/ui/badge';
+import { Button } from '@signozhq/ui/button';
+import {
+	Table,
+	TableBody,
+	TableCell,
+	TableHead,
+	TableHeader,
+	TableRow,
+} from '@signozhq/ui/table';
+import { ChevronDown } from '@signozhq/icons';
+import cx from 'classnames';
+import { startCase } from 'lodash-es';
+
+import type { PricingRule } from './types';
+import {
+	formatPricePerMillion,
+	getCanonicalId,
+	getExtraBuckets,
+	getRelativeLastSeen,
+	getSourceLabel,
+} from './utils';
+
+const COLUMN_COUNT = 8;
+
+interface ModelCostsTableProps {
+	rules: PricingRule[];
+	isLoading: boolean;
+	selectedRuleId: string | null;
+	canManage: boolean;
+	onEdit: (rule: PricingRule) => void;
+}
+
+interface RowProps {
+	rule: PricingRule;
+	isSelected: boolean;
+	canManage: boolean;
+	onEdit: (rule: PricingRule) => void;
+}
+
+function ModelCostRow({
+	rule,
+	isSelected,
+	canManage,
+	onEdit,
+}: RowProps): JSX.Element {
+	const buckets = getExtraBuckets(rule);
+
+	return (
+		<TableRow
+			className={cx({ 'model-costs-table__row--selected': isSelected })}
+			data-testid={`model-cost-row-${rule.id}`}
+		>
+			<TableCell>
+				<div className="model-cell">
+					<div
+						className="model-cell__name"
+						data-testid={`model-cell-name-${rule.id}`}
+					>
+						{rule.modelName}
+					</div>
+					<div
+						className="model-cell__canonical-id"
+						data-testid={`model-cell-canonical-id-${rule.id}`}
+					>
+						{getCanonicalId(rule)}
+					</div>
+				</div>
+			</TableCell>
+			<TableCell>{rule.provider}</TableCell>
+			<TableCell>
+				<span className="price-cell" data-testid={`price-cell-input-${rule.id}`}>
+					{formatPricePerMillion(rule.pricing?.input)}
+				</span>
+			</TableCell>
+			<TableCell>
+				<span className="price-cell" data-testid={`price-cell-output-${rule.id}`}>
+					{formatPricePerMillion(rule.pricing?.output)}
+				</span>
+			</TableCell>
+			<TableCell>
+				{buckets.length === 0 ? (
+					<span className="muted">—</span>
+				) : (
+					<div className="extra-buckets">
+						{buckets.map((bucket) => (
+							<Badge
+								key={bucket.key}
+								color="vanilla"
+								variant="outline"
+								className="extra-buckets__chip"
+							>
+								<span className="extra-buckets__key">{startCase(bucket.key)}</span>
+								<span className="extra-buckets__price">
+									{formatPricePerMillion(bucket.pricePerMillion)}
+								</span>
+							</Badge>
+						))}
+					</div>
+				)}
+			</TableCell>
+			<TableCell>
+				<Badge
+					color={rule.isOverride ? 'amber' : 'robin'}
+					variant="outline"
+					className="source-badge"
+					data-testid={`source-badge-${rule.id}`}
+				>
+					{getSourceLabel(rule)}
+				</Badge>
+			</TableCell>
+			<TableCell>{getRelativeLastSeen(rule)}</TableCell>
+			<TableCell>
+				<Button
+					variant="ghost"
+					color="secondary"
+					size="sm"
+					suffix={<ChevronDown size={14} />}
+					testId={`edit-rule-${rule.id}`}
+					onClick={(): void => onEdit(rule)}
+				>
+					{canManage ? 'Edit' : 'View'}
+				</Button>
+			</TableCell>
+		</TableRow>
+	);
+}
+
+function ModelCostsTable({
+	rules,
+	isLoading,
+	selectedRuleId,
+	canManage,
+	onEdit,
+}: ModelCostsTableProps): JSX.Element {
+	return (
+		<Table className="model-costs-table" testId="model-costs-table">
+			<TableHeader>
+				<TableRow>
+					<TableHead>Model</TableHead>
+					<TableHead>Provider</TableHead>
+					<TableHead>Input / 1M</TableHead>
+					<TableHead>Output / 1M</TableHead>
+					<TableHead>Extra buckets</TableHead>
+					<TableHead>Source</TableHead>
+					<TableHead>Last seen</TableHead>
+					<TableHead aria-label="Actions" />
+				</TableRow>
+			</TableHeader>
+			<TableBody>
+				{isLoading && rules.length === 0 && (
+					<TableRow>
+						<TableCell colSpan={COLUMN_COUNT} className="model-costs-table__empty">
+							Loading pricing rules…
+						</TableCell>
+					</TableRow>
+				)}
+				{!isLoading && rules.length === 0 && (
+					<TableRow>
+						<TableCell colSpan={COLUMN_COUNT} className="model-costs-table__empty">
+							No model costs yet.
+						</TableCell>
+					</TableRow>
+				)}
+				{rules.map((rule) => (
+					<ModelCostRow
+						key={rule.id}
+						rule={rule}
+						isSelected={rule.id === selectedRuleId}
+						canManage={canManage}
+						onEdit={onEdit}
+					/>
+				))}
+			</TableBody>
+		</Table>
+	);
+}
+
+export default ModelCostsTable;

frontend/src/container/LLMObservabilityModelPricing/PatternEditor.tsx

@@ -0,0 +1,96 @@
+import { useState } from 'react';
+import { Badge } from '@signozhq/ui/badge';
+import { Button } from '@signozhq/ui/button';
+import { Input } from '@signozhq/ui/input';
+import { X } from '@signozhq/icons';
+
+interface PatternEditorProps {
+	patterns: string[];
+	isReadOnly: boolean;
+	onChange: (patterns: string[]) => void;
+}
+
+// Model-name prefix patterns as removable chips + an add input.
+function PatternEditor({
+	patterns,
+	isReadOnly,
+	onChange,
+}: PatternEditorProps): JSX.Element {
+	const [patternInput, setPatternInput] = useState<string>('');
+
+	const addPattern = (): void => {
+		const next = patternInput.trim();
+		if (!next || patterns.includes(next)) {
+			setPatternInput('');
+			return;
+		}
+		onChange([...patterns, next]);
+		setPatternInput('');
+	};
+
+	const removePattern = (pattern: string): void => {
+		onChange(patterns.filter((p) => p !== pattern));
+	};
+
+	return (
+		<div className="drawer-section">
+			<span className="field-label">
+				Model name patterns <span className="muted">(prefix match)</span>
+			</span>
+			<div className="pattern-box">
+				<div className="pattern-chips">
+					{patterns.map((pattern) => (
+						<Badge
+							key={pattern}
+							color="vanilla"
+							variant="outline"
+							className="pattern-chip"
+						>
+							{pattern}*
+							{!isReadOnly && (
+								<button
+									type="button"
+									aria-label={`Remove pattern ${pattern}`}
+									className="pattern-chip__remove"
+									onClick={(): void => removePattern(pattern)}
+								>
+									<X size={10} />
+								</button>
+							)}
+						</Badge>
+					))}
+				</div>
+				{!isReadOnly && (
+					<div className="pattern-add">
+						<Input
+							placeholder="Add pattern…"
+							value={patternInput}
+							onChange={(e): void => setPatternInput(e.target.value)}
+							onKeyDown={(e): void => {
+								if (e.key === 'Enter') {
+									e.preventDefault();
+									addPattern();
+								}
+							}}
+							testId="drawer-pattern-input"
+						/>
+						<Button
+							variant="outlined"
+							color="secondary"
+							onClick={addPattern}
+							testId="drawer-pattern-add-btn"
+						>
+							+ Add
+						</Button>
+					</div>
+				)}
+			</div>
+			<p className="muted help">
+				Each pattern uses <strong>prefix matching</strong> against{' '}
+				<code>gen_ai.request.model</code>.
+			</p>
+		</div>
+	);
+}
+
+export default PatternEditor;

frontend/src/container/LLMObservabilityModelPricing/PricingFields.tsx

@@ -0,0 +1,137 @@
+import { Input } from '@signozhq/ui/input';
+import { SelectSimple } from '@signozhq/ui/select';
+import { Lock } from '@signozhq/icons';
+import { LlmpricingruletypesLLMPricingRuleCacheModeDTO as CacheModeDTO } from 'api/generated/services/sigNoz.schemas';
+
+import { CACHE_MODE_OPTIONS } from './constants';
+import type { DrawerDraft } from './types';
+
+type Pricing = DrawerDraft['pricing'];
+
+interface PricingFieldsProps {
+	pricing: Pricing;
+	isReadOnly: boolean;
+	onChange: (patch: Partial<Pricing>) => void;
+}
+
+// Parses a number input's raw string. Empty → null (used by optional buckets),
+// otherwise a finite number (NaN coerced to 0).
+function parseAmount(raw: string): number | null {
+	if (raw.trim() === '') {
+		return null;
+	}
+	const value = Number(raw);
+	return Number.isFinite(value) ? value : 0;
+}
+
+function PricingFields({
+	pricing,
+	isReadOnly,
+	onChange,
+}: PricingFieldsProps): JSX.Element {
+	const hasCacheBucket =
+		pricing.cacheRead !== null || pricing.cacheWrite !== null;
+
+	return (
+		<div className="drawer-section drawer-surface">
+			<div className="drawer-surface__head">
+				<h4>Pricing (per 1M tokens, USD)</h4>
+				{isReadOnly && (
+					<span className="managed-label" data-testid="drawer-readonly-label">
+						<Lock size={12} />
+						Read-only
+					</span>
+				)}
+			</div>
+			<div className="pricing-grid">
+				<div className="pricing-field">
+					<label htmlFor="input-cost">
+						Input cost <span className="required">*</span>
+					</label>
+					<Input
+						id="input-cost"
+						type="number"
+						min={0}
+						step={0.01}
+						value={pricing.input}
+						disabled={isReadOnly}
+						onChange={(e): void =>
+							onChange({ input: parseAmount(e.target.value) ?? 0 })
+						}
+						testId="drawer-input-cost"
+					/>
+				</div>
+				<div className="pricing-field">
+					<label htmlFor="output-cost">
+						Output cost <span className="required">*</span>
+					</label>
+					<Input
+						id="output-cost"
+						type="number"
+						min={0}
+						step={0.01}
+						value={pricing.output}
+						disabled={isReadOnly}
+						onChange={(e): void =>
+							onChange({ output: parseAmount(e.target.value) ?? 0 })
+						}
+						testId="drawer-output-cost"
+					/>
+				</div>
+			</div>
+
+			<div className="extras-divider">Extra pricing buckets</div>
+			<div className="pricing-grid">
+				<div className="pricing-field">
+					<label htmlFor="cache-read">cache_read</label>
+					<Input
+						id="cache-read"
+						type="number"
+						min={0}
+						step={0.01}
+						value={pricing.cacheRead ?? ''}
+						placeholder="—"
+						disabled={isReadOnly}
+						onChange={(e): void =>
+							onChange({ cacheRead: parseAmount(e.target.value) })
+						}
+						testId="drawer-cache-read-cost"
+					/>
+				</div>
+				<div className="pricing-field">
+					<label htmlFor="cache-write">cache_write</label>
+					<Input
+						id="cache-write"
+						type="number"
+						min={0}
+						step={0.01}
+						value={pricing.cacheWrite ?? ''}
+						placeholder="—"
+						disabled={isReadOnly}
+						onChange={(e): void =>
+							onChange({ cacheWrite: parseAmount(e.target.value) })
+						}
+						testId="drawer-cache-write-cost"
+					/>
+				</div>
+			</div>
+			{hasCacheBucket && (
+				<div className="pricing-field cache-mode-field">
+					<label htmlFor="cache-mode">Cache mode</label>
+					<SelectSimple
+						id="cache-mode"
+						value={pricing.cacheMode}
+						items={CACHE_MODE_OPTIONS}
+						onChange={(v): void => onChange({ cacheMode: v as CacheModeDTO })}
+						disabled={isReadOnly}
+						className="full-width"
+						withPortal={false}
+						testId="drawer-cache-mode"
+					/>
+				</div>
+			)}
+		</div>
+	);
+}
+
+export default PricingFields;

frontend/src/container/LLMObservabilityModelPricing/SourceSelector.tsx

@@ -0,0 +1,103 @@
+import { useState } from 'react';
+import { Button } from '@signozhq/ui/button';
+import { RadioGroup, RadioGroupItem } from '@signozhq/ui/radio-group';
+import { Lock } from '@signozhq/icons';
+
+interface SourceSelectorProps {
+	isOverride: boolean;
+	isReadOnly: boolean;
+	onChange: (isOverride: boolean) => void;
+}
+
+// Auto-populated vs user-override selector, with a confirm step before
+// discarding custom values back to defaults.
+function SourceSelector({
+	isOverride,
+	isReadOnly,
+	onChange,
+}: SourceSelectorProps): JSX.Element {
+	const [showResetConfirm, setShowResetConfirm] = useState<boolean>(false);
+
+	const handleSourceChange = (value: 'auto' | 'override'): void => {
+		if (value === 'auto' && isOverride) {
+			setShowResetConfirm(true);
+			return;
+		}
+		if (value === 'override' && !isOverride) {
+			onChange(true);
+		}
+	};
+
+	const confirmReset = (): void => {
+		onChange(false);
+		setShowResetConfirm(false);
+	};
+
+	return (
+		<div className="drawer-section drawer-surface">
+			<div className="drawer-surface__head">
+				<h4>Source</h4>
+				{isReadOnly && (
+					<span className="managed-label" data-testid="drawer-managed-label">
+						<Lock size={12} />
+						Managed by SigNoz
+					</span>
+				)}
+			</div>
+			<RadioGroup
+				value={isOverride ? 'override' : 'auto'}
+				onChange={(value): void => handleSourceChange(value as 'auto' | 'override')}
+				className="source-radio-group"
+			>
+				<RadioGroupItem
+					value="auto"
+					containerClassName="source-radio source-radio--auto"
+					testId="drawer-source-auto"
+				>
+					<div className="source-radio__title">Auto-populated</div>
+					<div className="source-radio__desc">Default pricing from SigNoz.</div>
+				</RadioGroupItem>
+				<RadioGroupItem
+					value="override"
+					containerClassName="source-radio source-radio--override"
+					testId="drawer-source-override"
+				>
+					<div className="source-radio__title">User override</div>
+					<div className="source-radio__desc">Custom pricing. Takes precedence.</div>
+				</RadioGroupItem>
+			</RadioGroup>
+			{showResetConfirm && (
+				<div
+					className="reset-confirm"
+					role="dialog"
+					aria-label="Reset to default pricing"
+				>
+					<p>
+						Reset to default pricing? Custom values will be discarded. it might take
+						24 hours for changes to take effect.
+					</p>
+					<div className="reset-confirm__actions">
+						<Button
+							variant="outlined"
+							color="secondary"
+							onClick={(): void => setShowResetConfirm(false)}
+							testId="drawer-reset-keep-btn"
+						>
+							Keep
+						</Button>
+						<Button
+							variant="solid"
+							color="primary"
+							onClick={confirmReset}
+							testId="drawer-reset-confirm-btn"
+						>
+							Reset
+						</Button>
+					</div>
+				</div>
+			)}
+		</div>
+	);
+}
+
+export default SourceSelector;

frontend/src/container/LLMObservabilityModelPricing/__tests__/LLMObservabilityModelPricing.test.tsx

@@ -0,0 +1,149 @@
+import {
+	LlmpricingruletypesLLMPricingRuleUnitDTO as UnitDTO,
+	type LlmpricingruletypesLLMPricingRuleDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import { rest, server } from 'mocks-server/server';
+import { fireEvent, render, screen } from 'tests/test-utils';
+
+import LLMObservabilityModelPricing from '../LLMObservabilityModelPricing';
+
+const ENDPOINT = '*/api/v1/llm_pricing_rules';
+
+const mockRules: LlmpricingruletypesLLMPricingRuleDTO[] = [
+	{
+		id: 'rule-gpt4o',
+		orgId: 'org-1',
+		modelName: 'gpt-4o',
+		provider: 'OpenAI',
+		modelPattern: ['gpt-4o'],
+		isOverride: false,
+		enabled: true,
+		unit: UnitDTO.per_million_tokens,
+		pricing: { input: 15, output: 60 },
+	},
+	{
+		id: 'rule-llama',
+		orgId: 'org-1',
+		modelName: 'llama-3.1-70b',
+		provider: 'Self-hosted',
+		modelPattern: ['llama-3.1'],
+		isOverride: true,
+		enabled: true,
+		unit: UnitDTO.per_million_tokens,
+		pricing: { input: 0, output: 0 },
+	},
+];
+
+describe('LLMObservabilityModelPricing', () => {
+	beforeEach(() => {
+		server.use(
+			rest.get(ENDPOINT, (_, res, ctx) =>
+				res(
+					ctx.status(200),
+					ctx.json({
+						status: 'success',
+						data: {
+							items: mockRules,
+							limit: 100,
+							offset: 0,
+							total: mockRules.length,
+						},
+					}),
+				),
+			),
+		);
+	});
+
+	afterEach(() => {
+		server.resetHandlers();
+	});
+
+	it('renders the page header and both rules', async () => {
+		render(<LLMObservabilityModelPricing />);
+
+		await screen.findByText('gpt-4o');
+		expect(screen.getByText('Configuration')).toBeInTheDocument();
+		expect(screen.getByText('llama-3.1-70b')).toBeInTheDocument();
+		expect(screen.getByText('openai:gpt-4o')).toBeInTheDocument();
+	});
+
+	it('filters rules by the search input', async () => {
+		render(<LLMObservabilityModelPricing />);
+
+		await screen.findByText('gpt-4o');
+
+		fireEvent.change(screen.getByTestId('search-input'), {
+			target: { value: 'llama' },
+		});
+
+		expect(screen.queryByText('gpt-4o')).not.toBeInTheDocument();
+		expect(screen.getByText('llama-3.1-70b')).toBeInTheDocument();
+	});
+
+	it('opens the drawer in Add mode when the Add button is clicked', async () => {
+		render(<LLMObservabilityModelPricing />);
+
+		await screen.findByText('gpt-4o');
+		fireEvent.click(screen.getByTestId('add-model-cost-btn'));
+
+		const input = (await screen.findByTestId(
+			'drawer-model-id-input',
+		)) as HTMLInputElement;
+		expect(input).toBeInTheDocument();
+		expect(input.value).toBe('');
+	});
+
+	it('opens the drawer in Edit mode with prefilled values when a row Edit is clicked', async () => {
+		render(<LLMObservabilityModelPricing />);
+
+		await screen.findByText('gpt-4o');
+		fireEvent.click(screen.getByTestId('edit-rule-rule-gpt4o'));
+
+		const input = (await screen.findByTestId(
+			'drawer-model-id-input',
+		)) as HTMLInputElement;
+		expect(input).toBeInTheDocument();
+		expect(input.value).toBe('gpt-4o');
+	});
+
+	it('hides the Add button for non-admin users (write APIs are Admin-only)', async () => {
+		render(<LLMObservabilityModelPricing />, {}, { role: 'VIEWER' });
+
+		await screen.findByText('gpt-4o');
+		expect(screen.queryByTestId('add-model-cost-btn')).not.toBeInTheDocument();
+		// rows still open in read-only "View" mode
+		expect(screen.getByTestId('edit-rule-rule-gpt4o')).toHaveTextContent('View');
+	});
+
+	it('paginates server-side: selecting page 2 requests the next offset', async () => {
+		const requestedOffsets: number[] = [];
+		server.use(
+			rest.get(ENDPOINT, (req, res, ctx) => {
+				const offset = Number(req.url.searchParams.get('offset') ?? '0');
+				requestedOffsets.push(offset);
+				return res(
+					ctx.status(200),
+					ctx.json({
+						status: 'success',
+						data: {
+							items: [
+								{ ...mockRules[0], id: `rule-${offset}`, modelName: `model-${offset}` },
+							],
+							limit: 20,
+							offset,
+							total: 25,
+						},
+					}),
+				);
+			}),
+		);
+
+		render(<LLMObservabilityModelPricing />);
+
+		await screen.findByText('model-0');
+		fireEvent.click(screen.getByRole('button', { name: '2' }));
+
+		await screen.findByText('model-20');
+		expect(requestedOffsets).toContain(20);
+	});
+});

frontend/src/container/LLMObservabilityModelPricing/__tests__/ModelCostDrawer.test.tsx

@@ -0,0 +1,220 @@
+import { useState } from 'react';
+import userEvent from '@testing-library/user-event';
+import { fireEvent, render, screen } from 'tests/test-utils';
+
+import { EMPTY_DRAFT } from '../constants';
+import type { DrawerDraft } from '../types';
+import ModelCostDrawer from '../ModelCostDrawer';
+
+interface HarnessProps {
+	initialDraft?: DrawerDraft;
+	mode?: 'add' | 'edit';
+	canManage?: boolean;
+	onSave?: () => void;
+	onDelete?: () => void;
+}
+
+function Harness({
+	initialDraft = {
+		...EMPTY_DRAFT,
+		modelName: 'gpt-4o',
+		pricing: { ...EMPTY_DRAFT.pricing, input: 1, output: 1 },
+	},
+	mode = 'add',
+	canManage = true,
+	onSave = jest.fn(),
+	onDelete = jest.fn(),
+}: HarnessProps): JSX.Element {
+	const [draft, setDraft] = useState<DrawerDraft>(initialDraft);
+	return (
+		<ModelCostDrawer
+			isOpen
+			mode={mode}
+			draft={draft}
+			setDraft={setDraft}
+			onClose={jest.fn()}
+			onSave={onSave}
+			onDelete={onDelete}
+			isSaving={false}
+			isDeleting={false}
+			saveError={null}
+			canManage={canManage}
+		/>
+	);
+}
+
+describe('ModelCostDrawer', () => {
+	it('adds a pattern chip when the user types and presses Enter', () => {
+		render(<Harness />);
+
+		fireEvent.change(screen.getByTestId('drawer-pattern-input'), {
+			target: { value: 'gpt-4o-mini' },
+		});
+		fireEvent.keyDown(screen.getByTestId('drawer-pattern-input'), {
+			key: 'Enter',
+			code: 'Enter',
+		});
+
+		expect(screen.getByText('gpt-4o-mini*')).toBeInTheDocument();
+	});
+
+	it('disables pricing fields when isOverride is false', () => {
+		render(
+			<Harness
+				mode="edit"
+				initialDraft={{
+					...EMPTY_DRAFT,
+					id: 'rule-1',
+					modelName: 'gpt-4o',
+					provider: 'OpenAI',
+					isOverride: false,
+				}}
+			/>,
+		);
+
+		expect(screen.getByTestId('drawer-input-cost')).toBeDisabled();
+		expect(screen.getByTestId('drawer-output-cost')).toBeDisabled();
+	});
+
+	it('enables pricing fields when isOverride is true', () => {
+		render(
+			<Harness
+				mode="edit"
+				initialDraft={{
+					...EMPTY_DRAFT,
+					id: 'rule-1',
+					modelName: 'gpt-4o',
+					provider: 'OpenAI',
+					isOverride: true,
+				}}
+			/>,
+		);
+
+		expect(screen.getByTestId('drawer-input-cost')).not.toBeDisabled();
+		expect(screen.getByTestId('drawer-output-cost')).not.toBeDisabled();
+	});
+
+	it('disables the Provider select in Edit mode but allows it in Add mode', () => {
+		const { unmount } = render(<Harness mode="add" />);
+
+		expect(screen.getByTestId('drawer-provider-select')).not.toHaveAttribute(
+			'data-disabled',
+		);
+		unmount();
+
+		render(
+			<Harness
+				mode="edit"
+				initialDraft={{
+					...EMPTY_DRAFT,
+					id: 'rule-1',
+					modelName: 'gpt-4o',
+					provider: 'OpenAI',
+					isOverride: true,
+				}}
+			/>,
+		);
+
+		expect(screen.getByTestId('drawer-provider-select')).toHaveAttribute(
+			'data-disabled',
+		);
+	});
+
+	it('keeps metadata editable but locks pricing when source is auto-populated', () => {
+		render(
+			<Harness
+				mode="add"
+				initialDraft={{ ...EMPTY_DRAFT, modelName: 'gpt-4o', isOverride: false }}
+			/>,
+		);
+
+		// Metadata stays editable while the rule is auto-populated…
+		expect(screen.getByTestId('drawer-model-id-input')).not.toBeDisabled();
+		// …but pricing is read-only until "User override" is chosen.
+		expect(screen.getByTestId('drawer-input-cost')).toBeDisabled();
+	});
+
+	it('shows a reset confirmation when switching from Override to Auto', async () => {
+		const user = userEvent.setup({ pointerEventsCheck: 0 });
+		render(
+			<Harness
+				initialDraft={{
+					...EMPTY_DRAFT,
+					modelName: 'gpt-4o',
+					isOverride: true,
+				}}
+			/>,
+		);
+
+		await user.click(screen.getByTestId('drawer-source-auto'));
+
+		expect(screen.getByTestId('drawer-reset-confirm-btn')).toBeInTheDocument();
+		expect(screen.getByTestId('drawer-reset-keep-btn')).toBeInTheDocument();
+	});
+
+	it('hides the Delete action in Add mode', () => {
+		render(<Harness mode="add" />);
+		expect(screen.queryByTestId('drawer-delete-btn')).not.toBeInTheDocument();
+	});
+
+	it('shows the Delete action in Edit mode', () => {
+		render(
+			<Harness
+				mode="edit"
+				initialDraft={{
+					...EMPTY_DRAFT,
+					id: 'rule-1',
+					modelName: 'gpt-4o',
+					isOverride: true,
+				}}
+			/>,
+		);
+		expect(screen.getByTestId('drawer-delete-btn')).toBeInTheDocument();
+	});
+
+	it('disables the provider select in Edit mode', () => {
+		render(
+			<Harness
+				mode="edit"
+				initialDraft={{
+					...EMPTY_DRAFT,
+					id: 'rule-1',
+					modelName: 'gpt-4o',
+					provider: 'OpenAI',
+					isOverride: true,
+				}}
+			/>,
+		);
+
+		const providerNode = screen.getByTestId('drawer-provider-select');
+		expect(providerNode.className).toMatch(/ant-select-disabled/);
+	});
+
+	it('calls onSave when the Save button is clicked', async () => {
+		const user = userEvent.setup({ pointerEventsCheck: 0 });
+		const onSave = jest.fn();
+		render(<Harness onSave={onSave} />);
+
+		await user.click(screen.getByTestId('drawer-save-btn'));
+		expect(onSave).toHaveBeenCalledTimes(1);
+	});
+
+	it('is read-only when the user cannot manage pricing (hides Save/Delete)', () => {
+		render(
+			<Harness
+				mode="edit"
+				canManage={false}
+				initialDraft={{
+					...EMPTY_DRAFT,
+					id: 'rule-1',
+					modelName: 'gpt-4o',
+					isOverride: true,
+				}}
+			/>,
+		);
+
+		expect(screen.queryByTestId('drawer-save-btn')).not.toBeInTheDocument();
+		expect(screen.queryByTestId('drawer-delete-btn')).not.toBeInTheDocument();
+		expect(screen.getByTestId('drawer-model-id-input')).toBeDisabled();
+	});
+});

frontend/src/container/LLMObservabilityModelPricing/__tests__/drawerUtils.test.ts

@@ -0,0 +1,149 @@
+import {
+	LlmpricingruletypesLLMPricingRuleCacheModeDTO as CacheModeDTO,
+	LlmpricingruletypesLLMPricingRuleUnitDTO as UnitDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+import { EMPTY_DRAFT } from '../constants';
+import type { DrawerDraft, PricingRule } from '../types';
+import {
+	buildPricingPayload,
+	buildRulePayload,
+	draftFromRule,
+	validateDraft,
+} from '../utils';
+
+const makeRule = (overrides: Partial<PricingRule> = {}): PricingRule => ({
+	id: 'rule-1',
+	orgId: 'org-1',
+	modelName: 'gpt-4o',
+	provider: 'OpenAI',
+	modelPattern: ['gpt-4o'],
+	isOverride: false,
+	enabled: true,
+	unit: UnitDTO.per_million_tokens,
+	pricing: { input: 15, output: 60 },
+	...overrides,
+});
+
+describe('drawer draft utils', () => {
+	describe('draftFromRule', () => {
+		it('maps a rule to a draft with cache values when present', () => {
+			const rule = makeRule({
+				pricing: {
+					input: 3,
+					output: 15,
+					cache: {
+						mode: CacheModeDTO.additive,
+						read: 0.3,
+						write: 3.75,
+					},
+				},
+			});
+			const draft = draftFromRule(rule);
+			expect(draft.modelName).toBe('gpt-4o');
+			expect(draft.pricing.input).toBe(3);
+			expect(draft.pricing.cacheRead).toBe(0.3);
+			expect(draft.pricing.cacheWrite).toBe(3.75);
+			expect(draft.pricing.cacheMode).toBe(CacheModeDTO.additive);
+		});
+
+		it('falls back to defaults when cache is missing', () => {
+			const draft = draftFromRule(makeRule());
+			expect(draft.pricing.cacheRead).toBeNull();
+			expect(draft.pricing.cacheWrite).toBeNull();
+			expect(draft.pricing.cacheMode).toBe(CacheModeDTO.unknown);
+		});
+	});
+
+	describe('buildPricingPayload', () => {
+		it('omits the cache block when no cache values are set', () => {
+			const payload = buildPricingPayload(EMPTY_DRAFT);
+			expect(payload.cache).toBeUndefined();
+		});
+
+		it('includes only the cache values that are > 0', () => {
+			const draft: DrawerDraft = {
+				...EMPTY_DRAFT,
+				pricing: {
+					...EMPTY_DRAFT.pricing,
+					cacheRead: 1.5,
+					cacheWrite: 0,
+					cacheMode: CacheModeDTO.subtract,
+				},
+			};
+			const payload = buildPricingPayload(draft);
+			expect(payload.cache?.read).toBe(1.5);
+			expect(payload.cache?.write).toBeUndefined();
+			expect(payload.cache?.mode).toBe(CacheModeDTO.subtract);
+		});
+	});
+
+	describe('buildRulePayload', () => {
+		it('uses the modelName as a default pattern when no patterns are supplied', () => {
+			const draft: DrawerDraft = {
+				...EMPTY_DRAFT,
+				modelName: 'gpt-4o',
+				patterns: [],
+				provider: 'OpenAI',
+			};
+			const payload = buildRulePayload(draft);
+			expect(payload.modelPattern).toStrictEqual(['gpt-4o']);
+			expect(payload.unit).toBe(UnitDTO.per_million_tokens);
+			expect(payload.enabled).toBe(true);
+		});
+
+		it('omits id and sourceId for an Add draft', () => {
+			const payload = buildRulePayload(EMPTY_DRAFT);
+			expect(payload.id).toBeUndefined();
+			expect(payload.sourceId).toBeUndefined();
+		});
+	});
+
+	describe('validateDraft', () => {
+		it('requires a model name in Add mode', () => {
+			const result = validateDraft(EMPTY_DRAFT, 'add');
+			expect(result.ok).toBe(false);
+			expect(result.message).toMatch(/billing model id/i);
+		});
+
+		it('rejects negative pricing', () => {
+			const draft: DrawerDraft = {
+				...EMPTY_DRAFT,
+				modelName: 'gpt-4o',
+				pricing: { ...EMPTY_DRAFT.pricing, input: -1 },
+			};
+			expect(validateDraft(draft, 'add').ok).toBe(false);
+		});
+
+		it('accepts a valid Add draft', () => {
+			const draft: DrawerDraft = {
+				...EMPTY_DRAFT,
+				modelName: 'gpt-4o',
+				pricing: { ...EMPTY_DRAFT.pricing, input: 1, output: 2 },
+			};
+			expect(validateDraft(draft, 'add').ok).toBe(true);
+		});
+
+		it('rejects zero input/output cost for overrides', () => {
+			const draft: DrawerDraft = {
+				...EMPTY_DRAFT,
+				modelName: 'gpt-4o',
+				isOverride: true,
+				pricing: { ...EMPTY_DRAFT.pricing, input: 0, output: 5 },
+			};
+			const result = validateDraft(draft, 'add');
+			expect(result.ok).toBe(false);
+			expect(result.message).toMatch(/input cost must be greater than 0/i);
+		});
+
+		it('skips pricing validation for auto-populated (non-override) rules', () => {
+			const draft: DrawerDraft = {
+				...EMPTY_DRAFT,
+				modelName: 'gpt-4o',
+				isOverride: false,
+				pricing: { ...EMPTY_DRAFT.pricing, input: 0, output: 0 },
+			};
+			expect(validateDraft(draft, 'edit').ok).toBe(true);
+		});
+	});
+});

frontend/src/container/LLMObservabilityModelPricing/__tests__/utils.test.ts

@@ -0,0 +1,119 @@
+import {
+	LlmpricingruletypesLLMPricingRuleCacheModeDTO as CacheModeDTO,
+	LlmpricingruletypesLLMPricingRuleUnitDTO as UnitDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+import type { PricingRule } from '../types';
+import {
+	filterRules,
+	formatPricePerMillion,
+	getCanonicalId,
+	getExtraBuckets,
+	getRelativeLastSeen,
+	getSourceLabel,
+} from '../utils';
+
+const makeRule = (overrides: Partial<PricingRule> = {}): PricingRule => ({
+	id: 'rule-1',
+	orgId: 'org-1',
+	modelName: 'gpt-4o',
+	provider: 'OpenAI',
+	modelPattern: ['gpt-4o'],
+	isOverride: false,
+	enabled: true,
+	unit: UnitDTO.per_million_tokens,
+	pricing: { input: 15, output: 60 },
+	...overrides,
+});
+
+describe('utils', () => {
+	describe('formatPricePerMillion', () => {
+		it('formats numbers with 2 decimals and dollar prefix', () => {
+			expect(formatPricePerMillion(15)).toBe('$15.00');
+			expect(formatPricePerMillion(0.15)).toBe('$0.15');
+		});
+
+		it('returns em-dash for nullish or NaN', () => {
+			expect(formatPricePerMillion(undefined)).toBe('—');
+			expect(formatPricePerMillion(Number.NaN)).toBe('—');
+		});
+	});
+
+	describe('getExtraBuckets', () => {
+		it('returns an empty array when there is no cache pricing', () => {
+			expect(getExtraBuckets(makeRule())).toStrictEqual([]);
+		});
+
+		it('returns only buckets with values > 0', () => {
+			const rule = makeRule({
+				pricing: {
+					input: 3,
+					output: 15,
+					cache: {
+						mode: CacheModeDTO.additive,
+						read: 0.3,
+						write: 0,
+					},
+				},
+			});
+			const buckets = getExtraBuckets(rule);
+			expect(buckets).toStrictEqual([{ key: 'cache_read', pricePerMillion: 0.3 }]);
+		});
+	});
+
+	describe('getSourceLabel', () => {
+		it('returns "Auto" for non-override and "User override" otherwise', () => {
+			expect(getSourceLabel(makeRule({ isOverride: false }))).toBe('Auto');
+			expect(getSourceLabel(makeRule({ isOverride: true }))).toBe('User override');
+		});
+	});
+
+	describe('getCanonicalId', () => {
+		it('lowercases the provider and joins with the model name', () => {
+			expect(getCanonicalId(makeRule({ provider: 'OpenAI' }))).toBe(
+				'openai:gpt-4o',
+			);
+		});
+	});
+
+	describe('getRelativeLastSeen', () => {
+		it('returns em-dash when no timestamp is present', () => {
+			expect(getRelativeLastSeen(makeRule())).toBe('—');
+		});
+
+		it('formats minutes-old timestamps via dayjs fromNow', () => {
+			const recent = new Date(Date.now() - 5 * 60 * 1000).toISOString();
+			expect(getRelativeLastSeen(makeRule({ updatedAt: recent }))).toMatch(
+				/minutes? ago/,
+			);
+		});
+	});
+
+	describe('filterRules', () => {
+		const auto = makeRule({ id: 'r1', modelName: 'gpt-4o', isOverride: false });
+		const override = makeRule({
+			id: 'r2',
+			modelName: 'llama-3',
+			provider: 'Self-hosted',
+			modelPattern: ['llama-3'],
+			isOverride: true,
+		});
+
+		it('returns everything when no filters are applied', () => {
+			expect(filterRules([auto, override], '', 'all')).toHaveLength(2);
+		});
+
+		it('narrows by source = override', () => {
+			expect(filterRules([auto, override], '', 'override')).toStrictEqual([
+				override,
+			]);
+		});
+
+		it('narrows by free-text search across model and provider', () => {
+			expect(filterRules([auto, override], 'self', 'all')).toStrictEqual([
+				override,
+			]);
+			expect(filterRules([auto, override], 'gpt-4', 'all')).toStrictEqual([auto]);
+		});
+	});
+});

frontend/src/container/LLMObservabilityModelPricing/constants.ts

@@ -0,0 +1,34 @@
+import { LlmpricingruletypesLLMPricingRuleCacheModeDTO as CacheModeDTO } from 'api/generated/services/sigNoz.schemas';
+
+import type { DrawerDraft } from './types';
+
+export const PROVIDER_OPTIONS = [
+	{ value: 'OpenAI', label: 'OpenAI' },
+	{ value: 'Anthropic', label: 'Anthropic' },
+	{ value: 'Azure OpenAI', label: 'Azure OpenAI' },
+	{ value: 'Google', label: 'Google' },
+	{ value: 'Self-hosted', label: 'Self-hosted' },
+	{ value: 'Other', label: 'Other' },
+];
+
+export const CACHE_MODE_OPTIONS = [
+	{ value: CacheModeDTO.subtract, label: 'Subtract (OpenAI style)' },
+	{ value: CacheModeDTO.additive, label: 'Additive (Anthropic style)' },
+	{ value: CacheModeDTO.unknown, label: 'Unknown' },
+];
+
+export const EMPTY_DRAFT: DrawerDraft = {
+	id: null,
+	sourceId: null,
+	modelName: '',
+	provider: 'OpenAI',
+	patterns: [],
+	isOverride: true,
+	pricing: {
+		input: 0,
+		output: 0,
+		cacheMode: CacheModeDTO.unknown,
+		cacheRead: null,
+		cacheWrite: null,
+	},
+};

frontend/src/container/LLMObservabilityModelPricing/types.ts

@@ -0,0 +1,36 @@
+import {
+	LlmpricingruletypesLLMPricingRuleCacheModeDTO as CacheModeDTO,
+	type LlmpricingruletypesLLMPricingRuleDTO,
+} from 'api/generated/services/sigNoz.schemas';
+
+export type PricingRule = LlmpricingruletypesLLMPricingRuleDTO;
+
+export type SourceFilter = 'all' | 'auto' | 'override';
+
+export interface ExtraBucket {
+	key: string;
+	pricePerMillion: number;
+}
+
+export type DrawerMode = 'add' | 'edit';
+
+export interface DrawerDraft {
+	id: string | null;
+	sourceId: string | null;
+	modelName: string;
+	provider: string;
+	patterns: string[];
+	isOverride: boolean;
+	pricing: {
+		input: number;
+		output: number;
+		cacheMode: CacheModeDTO;
+		cacheRead: number | null;
+		cacheWrite: number | null;
+	};
+}
+
+export interface ValidationResult {
+	ok: boolean;
+	message?: string;
+}

frontend/src/container/LLMObservabilityModelPricing/useModelCostDrawer.ts

@@ -0,0 +1,123 @@
+import { useCallback, useState } from 'react';
+import { toast } from '@signozhq/ui/sonner';
+import { useQueryClient } from 'react-query';
+import {
+	getListLLMPricingRulesQueryKey,
+	useCreateOrUpdateLLMPricingRules,
+	useDeleteLLMPricingRule,
+} from 'api/generated/services/llmpricingrules';
+
+import { EMPTY_DRAFT } from './constants';
+import type { DrawerDraft, DrawerMode, PricingRule } from './types';
+import { buildRulePayload, draftFromRule } from './utils';
+
+interface UseModelCostDrawerResult {
+	isOpen: boolean;
+	mode: DrawerMode;
+	draft: DrawerDraft;
+	setDraft: (next: DrawerDraft) => void;
+	openForAdd: (prefillModelName?: string) => void;
+	openForEdit: (rule: PricingRule) => void;
+	close: () => void;
+	save: () => Promise<void>;
+	deleteRule: () => Promise<void>;
+	isSaving: boolean;
+	isDeleting: boolean;
+	saveError: string | null;
+	selectedRuleId: string | null;
+}
+
+export function useModelCostDrawer(): UseModelCostDrawerResult {
+	const queryClient = useQueryClient();
+	const [isOpen, setIsOpen] = useState<boolean>(false);
+	const [mode, setMode] = useState<DrawerMode>('add');
+	const [draft, setDraft] = useState<DrawerDraft>(EMPTY_DRAFT);
+	const [selectedRuleId, setSelectedRuleId] = useState<string | null>(null);
+	const [saveError, setSaveError] = useState<string | null>(null);
+
+	const { mutateAsync: createOrUpdate, isLoading: isSaving } =
+		useCreateOrUpdateLLMPricingRules();
+	const { mutateAsync: deleteRuleApi, isLoading: isDeleting } =
+		useDeleteLLMPricingRule();
+
+	const invalidateList = useCallback(async (): Promise<void> => {
+		await queryClient.invalidateQueries({
+			queryKey: getListLLMPricingRulesQueryKey(),
+		});
+	}, [queryClient]);
+
+	const openForAdd = useCallback((prefillModelName?: string): void => {
+		setMode('add');
+		setDraft({
+			...EMPTY_DRAFT,
+			modelName: prefillModelName || '',
+			patterns: prefillModelName ? [prefillModelName] : [],
+		});
+		setSelectedRuleId(null);
+		setSaveError(null);
+		setIsOpen(true);
+	}, []);
+
+	const openForEdit = useCallback((rule: PricingRule): void => {
+		setMode('edit');
+		setDraft(draftFromRule(rule));
+		setSelectedRuleId(rule.id);
+		setSaveError(null);
+		setIsOpen(true);
+	}, []);
+
+	const close = useCallback((): void => {
+		setIsOpen(false);
+		setSelectedRuleId(null);
+		setSaveError(null);
+	}, []);
+
+	const save = useCallback(async (): Promise<void> => {
+		setSaveError(null);
+		try {
+			await createOrUpdate({
+				data: { rules: [buildRulePayload(draft)] },
+			});
+			await invalidateList();
+			setIsOpen(false);
+			setSelectedRuleId(null);
+			toast.success(mode === 'edit' ? 'Model cost updated' : 'Model cost added');
+		} catch (error) {
+			const message = error instanceof Error ? error.message : 'Save failed';
+			setSaveError(message);
+		}
+	}, [createOrUpdate, draft, invalidateList, mode]);
+
+	const deleteRule = useCallback(async (): Promise<void> => {
+		if (!draft.id) {
+			return;
+		}
+		setSaveError(null);
+		try {
+			await deleteRuleApi({ pathParams: { id: draft.id } });
+			await invalidateList();
+			setIsOpen(false);
+			setSelectedRuleId(null);
+			toast.success('Model cost deleted');
+		} catch (error) {
+			const message = error instanceof Error ? error.message : 'Delete failed';
+			setSaveError(message);
+		}
+	}, [deleteRuleApi, draft.id, invalidateList]);
+
+	return {
+		isOpen,
+		mode,
+		draft,
+		setDraft,
+		openForAdd,
+		openForEdit,
+		close,
+		save,
+		deleteRule,
+		isSaving,
+		isDeleting,
+		saveError,
+		selectedRuleId,
+	};
+}

frontend/src/container/LLMObservabilityModelPricing/utils.ts

@@ -0,0 +1,175 @@
+import {
+	LlmpricingruletypesLLMPricingRuleCacheModeDTO as CacheModeDTO,
+	LlmpricingruletypesLLMPricingRuleUnitDTO as UnitDTO,
+	type LlmpricingruletypesLLMPricingCacheCostsDTO,
+	type LlmpricingruletypesLLMRulePricingDTO,
+	type LlmpricingruletypesUpdatableLLMPricingRuleDTO,
+} from 'api/generated/services/sigNoz.schemas';
+import dayjs from 'dayjs';
+import relativeTime from 'dayjs/plugin/relativeTime';
+
+import type {
+	DrawerDraft,
+	DrawerMode,
+	ExtraBucket,
+	PricingRule,
+	SourceFilter,
+	ValidationResult,
+} from './types';
+
+// Idempotent — relativeTime is also extended globally in utils/timeUtils.
+dayjs.extend(relativeTime);
+
+const lc = (value: string): string => value.toLowerCase();
+
+const hasCacheValue = (value: number | null): boolean =>
+	typeof value === 'number' && value > 0;
+
+// ─── Display helpers ─────────────────────────────────────────────────────────
+
+export const formatPricePerMillion = (value: number | undefined): string => {
+	if (value === undefined || value === null || Number.isNaN(value)) {
+		return '—';
+	}
+	return `$${value.toFixed(2)}`;
+};
+
+export const getExtraBuckets = (rule: PricingRule): ExtraBucket[] => {
+	const cache = rule.pricing?.cache;
+	if (!cache) {
+		return [];
+	}
+	const buckets: ExtraBucket[] = [];
+	if (typeof cache.read === 'number' && cache.read > 0) {
+		buckets.push({ key: 'cache_read', pricePerMillion: cache.read });
+	}
+	if (typeof cache.write === 'number' && cache.write > 0) {
+		buckets.push({ key: 'cache_write', pricePerMillion: cache.write });
+	}
+	return buckets;
+};
+
+export const getSourceLabel = (rule: PricingRule): 'Auto' | 'User override' =>
+	rule.isOverride ? 'User override' : 'Auto';
+
+export const getRelativeLastSeen = (rule: PricingRule): string => {
+	const ts = rule.updatedAt || rule.syncedAt || rule.createdAt;
+	const parsed = ts ? dayjs(ts) : null;
+	return parsed?.isValid() ? parsed.fromNow() : '—';
+};
+
+export const filterRules = (
+	rules: PricingRule[],
+	search: string,
+	source: SourceFilter,
+): PricingRule[] => {
+	const normalized = lc(search.trim());
+	return rules.filter((rule) => {
+		if (source === 'auto' && rule.isOverride) {
+			return false;
+		}
+		if (source === 'override' && !rule.isOverride) {
+			return false;
+		}
+		if (!normalized) {
+			return true;
+		}
+		return (
+			lc(rule.modelName).includes(normalized) ||
+			lc(rule.provider).includes(normalized) ||
+			(rule.modelPattern || []).some((pattern) => lc(pattern).includes(normalized))
+		);
+	});
+};
+
+export const getCanonicalId = (rule: PricingRule): string => {
+	const provider = rule.provider?.trim() || 'unknown';
+	return `${lc(provider)}:${rule.modelName}`;
+};
+
+// ─── Drawer draft <-> API helpers ────────────────────────────────────────────
+
+export const draftFromRule = (rule: PricingRule): DrawerDraft => ({
+	id: rule.id,
+	sourceId: rule.sourceId ?? null,
+	modelName: rule.modelName,
+	provider: rule.provider || 'OpenAI',
+	patterns: rule.modelPattern || [],
+	isOverride: !!rule.isOverride,
+	pricing: {
+		input: rule.pricing?.input ?? 0,
+		output: rule.pricing?.output ?? 0,
+		cacheMode: rule.pricing?.cache?.mode ?? CacheModeDTO.unknown,
+		cacheRead: rule.pricing?.cache?.read ?? null,
+		cacheWrite: rule.pricing?.cache?.write ?? null,
+	},
+});
+
+export const buildPricingPayload = (
+	draft: DrawerDraft,
+): LlmpricingruletypesLLMRulePricingDTO => {
+	const pricing: LlmpricingruletypesLLMRulePricingDTO = {
+		input: draft.pricing.input,
+		output: draft.pricing.output,
+	};
+	if (
+		hasCacheValue(draft.pricing.cacheRead) ||
+		hasCacheValue(draft.pricing.cacheWrite)
+	) {
+		const cache: LlmpricingruletypesLLMPricingCacheCostsDTO = {
+			mode: draft.pricing.cacheMode,
+		};
+		if (hasCacheValue(draft.pricing.cacheRead)) {
+			cache.read = draft.pricing.cacheRead as number;
+		}
+		if (hasCacheValue(draft.pricing.cacheWrite)) {
+			cache.write = draft.pricing.cacheWrite as number;
+		}
+		pricing.cache = cache;
+	}
+	return pricing;
+};
+
+export const buildRulePayload = (
+	draft: DrawerDraft,
+): LlmpricingruletypesUpdatableLLMPricingRuleDTO => ({
+	id: draft.id || undefined,
+	sourceId: draft.sourceId || undefined,
+	modelName: draft.modelName.trim(),
+	provider: draft.provider.trim(),
+	modelPattern:
+		draft.patterns.length > 0 ? draft.patterns : [draft.modelName.trim()],
+	isOverride: draft.isOverride,
+	enabled: true,
+	unit: UnitDTO.per_million_tokens,
+	pricing: buildPricingPayload(draft),
+});
+
+export const validateDraft = (
+	draft: DrawerDraft,
+	mode: DrawerMode,
+): ValidationResult => {
+	if (mode === 'add' && !draft.modelName.trim()) {
+		return { ok: false, message: 'Billing model ID is required.' };
+	}
+	if (!draft.provider.trim()) {
+		return { ok: false, message: 'Provider is required.' };
+	}
+	// Pricing is only user-entered for overrides; auto-populated rules are
+	// managed by SigNoz (and may legitimately be 0 for self-hosted models).
+	if (draft.isOverride) {
+		if (!(draft.pricing.input > 0)) {
+			return { ok: false, message: 'Input cost must be greater than 0.' };
+		}
+		if (!(draft.pricing.output > 0)) {
+			return { ok: false, message: 'Output cost must be greater than 0.' };
+		}
+		if (
+			(draft.pricing.cacheRead !== null && draft.pricing.cacheRead < 0) ||
+			(draft.pricing.cacheWrite !== null && draft.pricing.cacheWrite < 0)
+		) {
+			return { ok: false, message: 'Cache costs must be non-negative.' };
+		}
+	}
+	return { ok: true };
+};

frontend/src/container/TopNav/DateTimeSelectionV2/constants.ts

@@ -206,6 +206,8 @@ export const routesToSkip = [
 	ROUTES.METER,
 	ROUTES.METER_EXPLORER_VIEWS,
 	ROUTES.SOMETHING_WENT_WRONG,
+	ROUTES.LLM_OBSERVABILITY_MODEL_PRICING,
+	ROUTES.LLM_OBSERVABILITY_ATTRIBUTE_MAPPING,
 ];
 
 export const routesToDisable = [ROUTES.LOGS_EXPLORER, ROUTES.LIVE_LOGS];

frontend/src/pages/LLMObservabilityAttributeMapping/index.tsx

@@ -0,0 +1,7 @@
+import LLMObservabilityAttributeMapping from 'container/LLMObservabilityAttributeMapping/LLMObservabilityAttributeMapping';
+
+function LLMObservabilityAttributeMappingPage(): JSX.Element {
+	return <LLMObservabilityAttributeMapping />;
+}
+
+export default LLMObservabilityAttributeMappingPage;

frontend/src/pages/LLMObservabilityModelPricing/index.tsx

@@ -0,0 +1,7 @@
+import LLMObservabilityModelPricing from 'container/LLMObservabilityModelPricing/LLMObservabilityModelPricing';
+
+function LLMObservabilityModelPricingPage(): JSX.Element {
+	return <LLMObservabilityModelPricing />;
+}
+
+export default LLMObservabilityModelPricingPage;

frontend/src/tests/test-utils.tsx

@@ -4,6 +4,7 @@ import { QueryClient, QueryClientProvider } from 'react-query';
 import { Provider } from 'react-redux';
 import { MemoryRouter } from 'react-router-dom';
 import { render, RenderOptions, RenderResult } from '@testing-library/react';
+import { TooltipProvider } from '@signozhq/ui/tooltip';
 import { FeatureKeys } from 'constants/features';
 import { ORG_PREFERENCES } from 'constants/orgPreferences';
 import { ResourceProvider } from 'hooks/useResourceAttribute';
@@ -301,7 +302,7 @@ export function AllTheProviders({
 								<ErrorModalProvider>
 									<TimezoneProvider>
 										<PreferenceContextProvider>
-											{queryBuilderContent}
+											<TooltipProvider>{queryBuilderContent}</TooltipProvider>
 										</PreferenceContextProvider>
 									</TimezoneProvider>
 								</ErrorModalProvider>

frontend/src/utils/permission/index.ts

@@ -20,7 +20,8 @@ export type ComponentTypes =
 	| 'add_panel'
 	| 'page_pipelines'
 	| 'edit_locked_dashboard'
-	| 'add_panel_locked_dashboard';
+	| 'add_panel_locked_dashboard'
+	| 'manage_llm_pricing';
 
 export const componentPermission: Record<ComponentTypes, ROLES[]> = {
 	current_org_settings: ['ADMIN'],
@@ -42,6 +43,7 @@ export const componentPermission: Record<ComponentTypes, ROLES[]> = {
 	page_pipelines: ['ADMIN', 'EDITOR'],
 	edit_locked_dashboard: ['ADMIN', 'AUTHOR'],
 	add_panel_locked_dashboard: ['ADMIN', 'AUTHOR'],
+	manage_llm_pricing: ['ADMIN', 'EDITOR', 'AUTHOR'],
 };
 
 export const routePermission: Record<keyof typeof ROUTES, ROLES[]> = {
@@ -136,4 +138,6 @@ export const routePermission: Record<keyof typeof ROUTES, ROLES[]> = {
 	AI_ASSISTANT_ICON_PREVIEW: ['ADMIN', 'EDITOR', 'VIEWER'],
 	MCP_SERVER: ['ADMIN', 'EDITOR', 'VIEWER'],
 	AI_ASSISTANT_BASE: ['ADMIN', 'EDITOR', 'VIEWER'],
+	LLM_OBSERVABILITY_MODEL_PRICING: ['ADMIN', 'EDITOR', 'VIEWER'],
+	LLM_OBSERVABILITY_ATTRIBUTE_MAPPING: ['ADMIN', 'EDITOR', 'VIEWER'],
 };

tests/e2e/helpers/llm-pricing.ts

@@ -0,0 +1,122 @@
+import type { APIRequestContext, Page } from '@playwright/test';
+
+export const LLM_PRICING_PATH = '/llm-observability/settings/model-pricing';
+
+// ─── Auth ────────────────────────────────────────────────────────────────────
+
+/**
+ * Read the JWT the auth fixture stored in `localStorage.AUTH_TOKEN`. The
+ * page must be on the SigNoz origin first; if not, this navigates to the
+ * pricing page to populate localStorage from the context's storageState.
+ */
+export async function authToken(page: Page): Promise<string> {
+	if (!page.url().startsWith('http')) {
+		await page.goto(LLM_PRICING_PATH);
+	}
+	return page.evaluate(
+		// eslint-disable-next-line @typescript-eslint/no-explicit-any
+		() => (globalThis as any).localStorage.getItem('AUTH_TOKEN') || '',
+	);
+}
+
+// ─── Navigation ──────────────────────────────────────────────────────────────
+
+/**
+ * Navigate to the LLM pricing page and wait for the root container.
+ */
+export async function gotoLlmPricingPage(page: Page): Promise<void> {
+	await page.goto(LLM_PRICING_PATH);
+	await page
+		.getByTestId('llm-observability-model-pricing-page')
+		.waitFor({ state: 'visible' });
+}
+
+// ─── API helpers ─────────────────────────────────────────────────────────────
+
+interface SeedOptions {
+	modelName?: string;
+	provider?: string;
+	isOverride?: boolean;
+	inputCost?: number;
+	outputCost?: number;
+}
+
+/**
+ * Seed one pricing rule via `PUT /api/v1/llm_pricing_rules` and return its id.
+ * The PUT response is void (HTTP 200, no body), so a follow-up GET by modelName
+ * is required to obtain the id.
+ */
+export async function createPricingRuleViaApi(
+	page: Page,
+	overrides: SeedOptions = {},
+): Promise<string> {
+	const {
+		modelName = 'e2e-test-model',
+		provider = 'OpenAI',
+		isOverride = true,
+		inputCost = 10.0,
+		outputCost = 30.0,
+	} = overrides;
+
+	const token = await authToken(page);
+
+	const putRes = await page.request.put('/api/v1/llm_pricing_rules', {
+		data: {
+			rules: [
+				{
+					modelName,
+					provider,
+					modelPattern: [modelName],
+					isOverride,
+					enabled: true,
+					unit: 'per_million_tokens',
+					pricing: { input: inputCost, output: outputCost },
+				},
+			],
+		},
+		headers: { Authorization: `Bearer ${token}` },
+	});
+	if (!putRes.ok()) {
+		throw new Error(
+			`PUT /api/v1/llm_pricing_rules ${putRes.status()}: ${await putRes.text()}`,
+		);
+	}
+
+	// PUT returns void — fetch the list to find the newly-created rule's id.
+	const getRes = await page.request.get(
+		'/api/v1/llm_pricing_rules?offset=0&limit=200',
+		{
+			headers: { Authorization: `Bearer ${token}` },
+		},
+	);
+	if (!getRes.ok()) {
+		throw new Error(
+			`GET /api/v1/llm_pricing_rules ${getRes.status()}: ${await getRes.text()}`,
+		);
+	}
+	const body = (await getRes.json()) as {
+		data: { items: Array<{ id: string; modelName: string }> };
+	};
+	const rule = body.data.items.find((r) => r.modelName === modelName);
+	if (!rule) {
+		throw new Error(`Could not find seeded rule "${modelName}" in GET response`);
+	}
+	return rule.id;
+}
+
+/**
+ * Best-effort delete via API. Errors are swallowed so suite-level cleanup
+ * stays resilient when a UI flow already deleted the resource (404) or the
+ * stack is mid-shutdown.
+ */
+export async function deletePricingRuleViaApi(
+	request: APIRequestContext,
+	id: string,
+	token: string,
+): Promise<void> {
+	await request
+		.delete(`/api/v1/llm_pricing_rules/${id}`, {
+			headers: { Authorization: `Bearer ${token}` },
+		})
+		.catch(() => undefined);
+}

tests/e2e/tests/llm-pricing/delete.spec.ts

@@ -0,0 +1,123 @@
+import { expect, test } from '../../fixtures/auth';
+import {
+	authToken,
+	createPricingRuleViaApi,
+	deletePricingRuleViaApi,
+	gotoLlmPricingPage,
+} from '../../helpers/llm-pricing';
+
+test.describe.configure({ mode: 'serial' });
+
+test.describe('LLM Pricing — Delete rule', () => {
+	test('TC-20 Delete button removes the rule from the list', async ({
+		authedPage: page,
+	}) => {
+		const ruleId = await createPricingRuleViaApi(page, {
+			modelName: 'e2e-delete-target',
+			provider: 'OpenAI',
+			isOverride: true,
+			inputCost: 5.0,
+			outputCost: 15.0,
+		});
+
+		await gotoLlmPricingPage(page);
+		await page.getByTestId(`edit-rule-${ruleId}`).click();
+		await expect(page.getByText('Edit model cost').first()).toBeVisible();
+
+		const deleteResponse = page.waitForResponse(
+			(r) =>
+				r.url().includes('llm_pricing_rules') && r.request().method() === 'DELETE',
+		);
+		const listRefresh = page.waitForResponse(
+			(r) =>
+				r.url().includes('llm_pricing_rules') && r.request().method() === 'GET',
+		);
+		await page.getByTestId('drawer-delete-btn').click();
+		const del = await deleteResponse;
+		// DELETE returns 200 or 204
+		expect([200, 204]).toContain(del.status());
+		await listRefresh;
+
+		await expect(page.getByText('Edit model cost').first()).not.toBeVisible();
+		await expect(page.getByTestId(`model-cell-name-${ruleId}`)).not.toBeVisible();
+
+		// Rule was deleted by the UI; best-effort API call swallows any 404
+		const token = await authToken(page);
+		await deletePricingRuleViaApi(page.request, ruleId, token);
+	});
+
+	test('TC-21 delete error is surfaced in the drawer', async ({
+		authedPage: page,
+	}) => {
+		const ruleId = await createPricingRuleViaApi(page, {
+			modelName: 'e2e-delete-error',
+			provider: 'OpenAI',
+			isOverride: true,
+			inputCost: 3.0,
+			outputCost: 9.0,
+		});
+		try {
+			await gotoLlmPricingPage(page);
+			await page.getByTestId(`edit-rule-${ruleId}`).click();
+			await expect(page.getByText('Edit model cost').first()).toBeVisible();
+
+			// Intercept the DELETE and return 500
+			await page.route(`**/api/v1/llm_pricing_rules/${ruleId}`, async (route) => {
+				if (route.request().method() === 'DELETE') {
+					await route.fulfill({ status: 500, body: '{"message":"internal error"}' });
+				} else {
+					await route.continue();
+				}
+			});
+
+			await page.getByTestId('drawer-delete-btn').click();
+
+			// Error alert must appear inside the open drawer
+			await expect(page.locator('[role="alert"].drawer-error')).toBeVisible();
+
+			// Drawer stays open
+			await expect(page.getByText('Edit model cost').first()).toBeVisible();
+
+			// Remove the route intercept so cleanup can proceed
+			await page.unrouteAll();
+		} finally {
+			await page.getByTestId('drawer-cancel-btn').click().catch(() => undefined);
+			const token = await authToken(page);
+			await deletePricingRuleViaApi(page.request, ruleId, token);
+		}
+	});
+
+	test('TC-22 save error is surfaced in the drawer', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		await page.getByTestId('drawer-model-id-input').fill('e2e-err-test');
+
+		// Intercept PUT and return 422
+		await page.route('**/api/v1/llm_pricing_rules', async (route) => {
+			if (route.request().method() === 'PUT') {
+				await route.fulfill({
+					status: 422,
+					contentType: 'application/json',
+					body: JSON.stringify({ message: 'duplicate key' }),
+				});
+			} else {
+				await route.continue();
+			}
+		});
+
+		await page.getByTestId('drawer-save-btn').click();
+
+		// Error alert appears inside the drawer
+		await expect(page.locator('[role="alert"].drawer-error')).toBeVisible();
+
+		// Drawer remains open
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		await page.unrouteAll();
+		await page.getByTestId('drawer-cancel-btn').click();
+	});
+});

tests/e2e/tests/llm-pricing/drawer-add.spec.ts

@@ -0,0 +1,232 @@
+import { expect, test } from '../../fixtures/auth';
+import {
+	authToken,
+	deletePricingRuleViaApi,
+	gotoLlmPricingPage,
+} from '../../helpers/llm-pricing';
+
+test.describe.configure({ mode: 'serial' });
+
+test.describe('LLM Pricing — Add drawer', () => {
+	test('TC-06 opening the drawer shows correct default state', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+
+		// Drawer must be visible before asserting field values
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		await expect(page.getByTestId('drawer-model-id-input')).toBeVisible();
+		// Model ID field is empty by default
+		await expect(page.getByTestId('drawer-model-id-input')).toHaveValue('');
+
+		// Provider defaults to OpenAI
+		await expect(page.getByTestId('drawer-provider-select')).toContainText('OpenAI');
+
+		// Source radio: Override is checked, Auto is unchecked
+		await expect(page.getByTestId('drawer-source-override')).toHaveAttribute(
+			'data-state',
+			'checked',
+		);
+		await expect(page.getByTestId('drawer-source-auto')).toHaveAttribute(
+			'data-state',
+			'unchecked',
+		);
+
+		// Pricing defaults to 0 (Ant InputNumber wraps a real <input>)
+		await expect(
+			page.locator('[data-testid="drawer-input-cost"] input'),
+		).toHaveValue('0');
+		await expect(
+			page.locator('[data-testid="drawer-output-cost"] input'),
+		).toHaveValue('0');
+
+		// Cache mode is hidden when no cache bucket value
+		await expect(page.getByTestId('drawer-cache-mode')).not.toBeVisible();
+
+		// Save is disabled (empty model name); Delete is absent in add mode
+		await expect(page.getByTestId('drawer-save-btn')).toBeDisabled();
+		await expect(page.getByTestId('drawer-cancel-btn')).toBeVisible();
+		await expect(page.getByTestId('drawer-delete-btn')).not.toBeVisible();
+
+		await page.getByTestId('drawer-cancel-btn').click();
+		await expect(page.getByText('Add model cost').first()).not.toBeVisible();
+	});
+
+	test('TC-07 Save button tooltip shows validation message when model name is empty', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		// Save is disabled; hover triggers tooltip
+		const saveBtn = page.getByTestId('drawer-save-btn');
+		await expect(saveBtn).toBeDisabled();
+		await saveBtn.hover();
+		await expect(page.getByText('Billing model ID is required.')).toBeVisible();
+
+		await page.getByTestId('drawer-cancel-btn').click();
+	});
+
+	test('TC-08 adding a pattern chip via Add button and Enter key', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		await page.getByTestId('drawer-model-id-input').fill('e2e-add-test');
+
+		// Add via button
+		await page.getByTestId('drawer-pattern-input').fill('e2e-add');
+		await page.getByTestId('drawer-pattern-add-btn').click();
+		await expect(page.getByText('e2e-add*')).toBeVisible();
+		await expect(page.getByTestId('drawer-pattern-input')).toHaveValue('');
+
+		// Add via Enter key
+		await page.getByTestId('drawer-pattern-input').fill('e2e-add-v2');
+		await page.getByTestId('drawer-pattern-input').press('Enter');
+		await expect(page.getByText('e2e-add-v2*')).toBeVisible();
+
+		// Deduplication: adding e2e-add again produces no second chip
+		await page.getByTestId('drawer-pattern-input').fill('e2e-add');
+		await page.getByTestId('drawer-pattern-add-btn').click();
+		const chips = page.locator('.pattern-chip');
+		await expect(chips).toHaveCount(2);
+
+		// Remove first chip
+		await page.getByRole('button', { name: 'Remove pattern e2e-add' }).click();
+		await expect(page.getByText('e2e-add*')).not.toBeVisible();
+		await expect(page.getByText('e2e-add-v2*')).toBeVisible();
+
+		await page.getByTestId('drawer-cancel-btn').click();
+	});
+
+	test('TC-09 save a new user-override rule end-to-end', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		await page.getByTestId('drawer-model-id-input').fill('e2e-save-model');
+
+		// Select Anthropic provider
+		await page.getByTestId('drawer-provider-select').click();
+		await page.getByText('Anthropic').click();
+
+		// Add pattern
+		await page.getByTestId('drawer-pattern-input').fill('e2e-save');
+		await page.getByTestId('drawer-pattern-add-btn').click();
+
+		// Override radio is the default
+		await expect(page.getByTestId('drawer-source-override')).toHaveAttribute(
+			'data-state',
+			'checked',
+		);
+
+		// Set pricing
+		await page.locator('[data-testid="drawer-input-cost"] input').fill('5.50');
+		await page.locator('[data-testid="drawer-output-cost"] input').fill('17.00');
+
+		// Wait for PUT before clicking Save to avoid a race
+		const putResponse = page.waitForResponse(
+			(r) =>
+				r.url().includes('llm_pricing_rules') && r.request().method() === 'PUT',
+		);
+		const listRefresh = page.waitForResponse(
+			(r) =>
+				r.url().includes('llm_pricing_rules') && r.request().method() === 'GET',
+		);
+		await page.getByTestId('drawer-save-btn').click();
+		const put = await putResponse;
+		expect(put.status()).toBe(200);
+		await listRefresh;
+
+		// Drawer closes
+		await expect(page.getByText('Add model cost').first()).not.toBeVisible();
+
+		// Row appears in table — locate by model name text since we don't know the id yet
+		await expect(page.getByText('e2e-save-model')).toBeVisible();
+		// Source badge says "User override"
+		await expect(page.getByText('User override').first()).toBeVisible();
+
+		// Cleanup: resolve the rule id and delete via API (deletePricingRuleViaApi swallows errors)
+		const token = await authToken(page);
+		const getRes = await page.request.get(
+			'/api/v1/llm_pricing_rules?offset=0&limit=200',
+			{ headers: { Authorization: `Bearer ${token}` } },
+		);
+		const body = (await getRes.json()) as {
+			data: { items: Array<{ id: string; modelName: string }> };
+		};
+		const createdId = body.data.items.find((r) => r.modelName === 'e2e-save-model')?.id ?? '';
+		await deletePricingRuleViaApi(page.request, createdId, token);
+	});
+
+	test('TC-10 cache-mode select appears only when cache bucket has a value', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		await page.getByTestId('drawer-model-id-input').fill('e2e-cache-test');
+
+		// Cache mode is hidden before any cache bucket value is set
+		await expect(page.getByTestId('drawer-cache-mode')).not.toBeVisible();
+
+		// Set cache_read → cache-mode select must appear
+		await page.locator('[data-testid="drawer-cache-read-cost"] input').fill('0.30');
+		await page.locator('[data-testid="drawer-cache-read-cost"] input').press('Tab');
+		await expect(page.getByTestId('drawer-cache-mode')).toBeVisible();
+
+		// Cache mode defaults to "Unknown"
+		await expect(page.getByTestId('drawer-cache-mode')).toContainText('Unknown');
+
+		// Change to Subtract
+		await page.getByTestId('drawer-cache-mode').click();
+		await page.getByText('Subtract (OpenAI style)').click();
+		await expect(page.getByTestId('drawer-cache-mode')).toContainText('Subtract');
+
+		// Clearing cache_read hides the select again (Ant InputNumber: Ctrl+A then Delete)
+		const cacheInput = page.locator('[data-testid="drawer-cache-read-cost"] input');
+		await cacheInput.click();
+		await cacheInput.press('Control+a');
+		await cacheInput.press('Delete');
+		// Ant InputNumber fires onChange with null on clear — click elsewhere to commit
+		await page.locator('[data-testid="drawer-output-cost"] input').click();
+		await expect(page.getByTestId('drawer-cache-mode')).not.toBeVisible();
+
+		await page.getByTestId('drawer-cancel-btn').click();
+	});
+
+	test('TC-11 cancel closes the drawer without persisting data', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		await page.getByTestId('drawer-model-id-input').fill('e2e-cancel-test');
+		await page.locator('[data-testid="drawer-input-cost"] input').fill('99');
+
+		await page.getByTestId('drawer-cancel-btn').click();
+		await expect(page.getByText('Add model cost').first()).not.toBeVisible();
+
+		// No row created
+		await expect(page.getByText('e2e-cancel-test')).not.toBeVisible();
+
+		// Re-opening resets all fields to defaults
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+		await expect(page.getByTestId('drawer-model-id-input')).toHaveValue('');
+		await expect(
+			page.locator('[data-testid="drawer-input-cost"] input'),
+		).toHaveValue('0');
+
+		await page.getByTestId('drawer-cancel-btn').click();
+	});
+});

tests/e2e/tests/llm-pricing/drawer-edit.spec.ts

@@ -0,0 +1,165 @@
+import { expect, test } from '../../fixtures/auth';
+import {
+	authToken,
+	createPricingRuleViaApi,
+	deletePricingRuleViaApi,
+	gotoLlmPricingPage,
+} from '../../helpers/llm-pricing';
+
+test.describe.configure({ mode: 'serial' });
+
+test.describe('LLM Pricing — Edit drawer', () => {
+	test('TC-12 Edit button opens drawer pre-filled with rule data', async ({
+		authedPage: page,
+	}) => {
+		const ruleId = await createPricingRuleViaApi(page, {
+			modelName: 'e2e-edit-subject',
+			provider: 'Google',
+			isOverride: true,
+			inputCost: 3.0,
+			outputCost: 12.0,
+		});
+		try {
+			await gotoLlmPricingPage(page);
+			await page.getByTestId(`edit-rule-${ruleId}`).click();
+
+			await expect(page.getByText('Edit model cost').first()).toBeVisible();
+
+			// Model ID is locked in edit mode
+			const modelInput = page.getByTestId('drawer-model-id-input');
+			await expect(modelInput).toBeDisabled();
+			await expect(modelInput).toHaveValue('e2e-edit-subject');
+
+			// Provider is locked and pre-filled
+			await expect(page.getByTestId('drawer-provider-select')).toBeDisabled();
+			await expect(page.getByTestId('drawer-provider-select')).toContainText('Google');
+
+			// Source radio
+			await expect(page.getByTestId('drawer-source-override')).toHaveAttribute(
+				'data-state',
+				'checked',
+			);
+
+			// Pricing values
+			await expect(
+				page.locator('[data-testid="drawer-input-cost"] input'),
+			).toHaveValue('3');
+			await expect(
+				page.locator('[data-testid="drawer-output-cost"] input'),
+			).toHaveValue('12');
+
+			// Delete button present in edit mode
+			await expect(page.getByTestId('drawer-delete-btn')).toBeVisible();
+		} finally {
+			await page.getByTestId('drawer-cancel-btn').click().catch(() => undefined);
+			const token = await authToken(page);
+			await deletePricingRuleViaApi(page.request, ruleId, token);
+		}
+	});
+
+	test('TC-13 editing pricing values and saving updates the row', async ({
+		authedPage: page,
+	}) => {
+		const ruleId = await createPricingRuleViaApi(page, {
+			modelName: 'e2e-edit-subject',
+			provider: 'Google',
+			isOverride: true,
+			inputCost: 3.0,
+			outputCost: 12.0,
+		});
+		try {
+			await gotoLlmPricingPage(page);
+			await page.getByTestId(`edit-rule-${ruleId}`).click();
+			await expect(page.getByText('Edit model cost').first()).toBeVisible();
+
+			// Update pricing
+			const inputField = page.locator('[data-testid="drawer-input-cost"] input');
+			const outputField = page.locator('[data-testid="drawer-output-cost"] input');
+
+			await inputField.click();
+			await inputField.press('Control+a');
+			await inputField.fill('7.00');
+
+			await outputField.click();
+			await outputField.press('Control+a');
+			await outputField.fill('21.00');
+
+			const putResponse = page.waitForResponse(
+				(r) =>
+					r.url().includes('llm_pricing_rules') && r.request().method() === 'PUT',
+			);
+			const listRefresh = page.waitForResponse(
+				(r) =>
+					r.url().includes('llm_pricing_rules') && r.request().method() === 'GET',
+			);
+			await page.getByTestId('drawer-save-btn').click();
+			const put = await putResponse;
+			expect(put.status()).toBe(200);
+			await listRefresh;
+
+			await expect(page.getByText('Edit model cost').first()).not.toBeVisible();
+
+			// Updated values visible in the row
+			await expect(page.getByTestId(`price-cell-input-${ruleId}`)).toHaveText('$7.00');
+			await expect(page.getByTestId(`price-cell-output-${ruleId}`)).toHaveText('$21.00');
+		} finally {
+			const token = await authToken(page);
+			await deletePricingRuleViaApi(page.request, ruleId, token);
+		}
+	});
+
+	test('TC-14 read-only mode — auto rule opens with Managed-by-SigNoz and Read-only badges', async ({
+		authedPage: page,
+	}) => {
+		const ruleId = await createPricingRuleViaApi(page, {
+			modelName: 'e2e-auto-rule',
+			provider: 'OpenAI',
+			isOverride: false,
+			inputCost: 2.0,
+			outputCost: 8.0,
+		});
+		try {
+			await gotoLlmPricingPage(page);
+			await page.getByTestId(`edit-rule-${ruleId}`).click();
+			await expect(page.getByText('Edit model cost').first()).toBeVisible();
+
+			// Source section lock badge
+			await expect(page.getByTestId('drawer-managed-label')).toBeVisible();
+			await expect(page.getByTestId('drawer-managed-label')).toContainText(
+				'Managed by SigNoz',
+			);
+
+			// Pricing section lock badge
+			await expect(page.getByTestId('drawer-readonly-label')).toBeVisible();
+			await expect(page.getByTestId('drawer-readonly-label')).toContainText('Read-only');
+
+			// Fields are locked
+			await expect(page.getByTestId('drawer-model-id-input')).toBeDisabled();
+
+			// Radio: auto is checked
+			await expect(page.getByTestId('drawer-source-auto')).toHaveAttribute(
+				'data-state',
+				'checked',
+			);
+			await expect(page.getByTestId('drawer-source-override')).toHaveAttribute(
+				'data-state',
+				'unchecked',
+			);
+
+			// Pricing inputs are disabled
+			await expect(
+				page.locator('[data-testid="drawer-input-cost"] input'),
+			).toBeDisabled();
+			await expect(
+				page.locator('[data-testid="drawer-output-cost"] input'),
+			).toBeDisabled();
+
+			// Pattern input is hidden when read-only
+			await expect(page.getByTestId('drawer-pattern-input')).not.toBeVisible();
+		} finally {
+			await page.getByTestId('drawer-cancel-btn').click().catch(() => undefined);
+			const token = await authToken(page);
+			await deletePricingRuleViaApi(page.request, ruleId, token);
+		}
+	});
+});

tests/e2e/tests/llm-pricing/listing.spec.ts

@@ -0,0 +1,192 @@
+import { expect, test } from '../../fixtures/auth';
+import { newAdminContext } from '../../helpers/auth';
+import {
+	authToken,
+	createPricingRuleViaApi,
+	deletePricingRuleViaApi,
+	gotoLlmPricingPage,
+	LLM_PRICING_PATH,
+} from '../../helpers/llm-pricing';
+
+// Tests mutate the pricing rule list — run serially within the worker.
+test.describe.configure({ mode: 'serial' });
+
+// ─── Suite-level seed registry ────────────────────────────────────────────────
+//
+// TC-01 through TC-04 share two seeded rules (ruleA and ruleB) seeded in
+// beforeAll. TC-05 runs against an empty workspace and must not seed.
+
+const seedIds = new Set<string>();
+let ruleAId = '';
+let ruleBId = '';
+
+test.beforeAll(async ({ browser }) => {
+	const ctx = await newAdminContext(browser);
+	const page = await ctx.newPage();
+	try {
+		ruleAId = await createPricingRuleViaApi(page, {
+			modelName: 'e2e-gpt-4o',
+			provider: 'OpenAI',
+			isOverride: false,
+			inputCost: 5.0,
+			outputCost: 15.0,
+		});
+		seedIds.add(ruleAId);
+
+		ruleBId = await createPricingRuleViaApi(page, {
+			modelName: 'e2e-claude-3',
+			provider: 'Anthropic',
+			isOverride: true,
+			inputCost: 8.0,
+			outputCost: 24.0,
+		});
+		seedIds.add(ruleBId);
+	} finally {
+		await ctx.close();
+	}
+});
+
+test.afterAll(async ({ browser }) => {
+	if (seedIds.size === 0) return;
+	const ctx = await newAdminContext(browser);
+	const page = await ctx.newPage();
+	try {
+		const token = await authToken(page);
+		for (const id of seedIds) {
+			await deletePricingRuleViaApi(ctx.request, id, token);
+			seedIds.delete(id);
+		}
+	} finally {
+		await ctx.close();
+	}
+});
+
+test.describe('LLM Pricing — Listing', () => {
+	test('TC-01 listing page renders with data', async ({ authedPage: page }) => {
+		await gotoLlmPricingPage(page);
+
+		await expect(page.getByTestId('llm-observability-model-pricing-page')).toBeVisible();
+		await expect(page.getByRole('heading', { name: 'Configuration', level: 1 })).toBeVisible();
+
+		// Tabs
+		const modelCostsTab = page.getByRole('tab', { name: 'Model costs' });
+		await expect(modelCostsTab).toBeVisible();
+		await expect(modelCostsTab).toHaveAttribute('aria-selected', 'true');
+
+		const unpricedTab = page.getByRole('tab', { name: 'Unpriced models' });
+		await expect(unpricedTab).toBeVisible();
+		await expect(unpricedTab).toHaveAttribute('aria-disabled', 'true');
+
+		// Filter bar
+		await expect(page.getByTestId('search-input')).toBeVisible();
+		await expect(page.getByTestId('source-select')).toBeVisible();
+		await expect(page.getByTestId('add-model-cost-btn')).toBeVisible();
+
+		// Table and rows
+		await expect(page.getByTestId('model-costs-table')).toBeVisible();
+		await expect(page.getByTestId(`model-cell-name-${ruleAId}`)).toBeVisible();
+		await expect(page.getByTestId(`model-cell-name-${ruleBId}`)).toBeVisible();
+
+		// Footer
+		await expect(page.getByText(/Showing 2 models/)).toBeVisible();
+	});
+
+	test('TC-02 table columns and source badge render correctly', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+
+		// Rule A — auto (isOverride: false)
+		await expect(page.getByTestId(`model-cell-name-${ruleAId}`)).toHaveText('e2e-gpt-4o');
+		await expect(page.getByTestId(`model-cell-canonical-id-${ruleAId}`)).toHaveText(
+			'openai:e2e-gpt-4o',
+		);
+		const badgeA = page.getByTestId(`source-badge-${ruleAId}`);
+		await expect(badgeA).toHaveText('Auto');
+
+		// Rule B — user override (isOverride: true)
+		await expect(page.getByTestId(`model-cell-name-${ruleBId}`)).toHaveText('e2e-claude-3');
+		const badgeB = page.getByTestId(`source-badge-${ruleBId}`);
+		await expect(badgeB).toHaveText('User override');
+
+		// Price cells show $ prefix
+		await expect(page.getByTestId(`price-cell-input-${ruleAId}`)).toHaveText('$5.00');
+		await expect(page.getByTestId(`price-cell-output-${ruleAId}`)).toHaveText('$15.00');
+
+		// Edit button present for each row
+		await expect(page.getByTestId(`edit-rule-${ruleAId}`)).toBeVisible();
+		await expect(page.getByTestId(`edit-rule-${ruleBId}`)).toBeVisible();
+	});
+
+	test('TC-03 search filters rows by model name and provider', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+
+		// Search by model name prefix
+		await page.getByTestId('search-input').fill('e2e-gpt');
+		await expect(page.getByTestId(`model-cell-name-${ruleAId}`)).toBeVisible();
+		await expect(page.getByTestId(`model-cell-name-${ruleBId}`)).not.toBeVisible();
+		await expect(page.getByText(/Showing 1 model[^s]/)).toBeVisible();
+
+		// Search by provider (case-insensitive)
+		await page.getByTestId('search-input').fill('anthropic');
+		await expect(page.getByTestId(`model-cell-name-${ruleBId}`)).toBeVisible();
+		await expect(page.getByTestId(`model-cell-name-${ruleAId}`)).not.toBeVisible();
+		await expect(page.getByText(/Showing 1 model[^s]/)).toBeVisible();
+
+		// Clear search restores both rows
+		await page.getByTestId('search-input').fill('');
+		await expect(page.getByTestId(`model-cell-name-${ruleAId}`)).toBeVisible();
+		await expect(page.getByTestId(`model-cell-name-${ruleBId}`)).toBeVisible();
+		await expect(page.getByText(/Showing 2 models/)).toBeVisible();
+	});
+
+	test('TC-04 source filter narrows the table to auto-only or override-only', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+
+		// Filter to auto-populated only
+		await page.getByTestId('source-select').click();
+		await page.getByText('Auto-populated').click();
+		await expect(page.getByTestId(`model-cell-name-${ruleAId}`)).toBeVisible();
+		await expect(page.getByTestId(`model-cell-name-${ruleBId}`)).not.toBeVisible();
+		await expect(page.getByText(/Showing 1 model[^s]/)).toBeVisible();
+
+		// Filter to user override only
+		await page.getByTestId('source-select').click();
+		await page.getByText('User override').click();
+		await expect(page.getByTestId(`model-cell-name-${ruleBId}`)).toBeVisible();
+		await expect(page.getByTestId(`model-cell-name-${ruleAId}`)).not.toBeVisible();
+		await expect(page.getByText(/Showing 1 model[^s]/)).toBeVisible();
+
+		// Reset to all
+		await page.getByTestId('source-select').click();
+		await page.getByText('Source: All').click();
+		await expect(page.getByTestId(`model-cell-name-${ruleAId}`)).toBeVisible();
+		await expect(page.getByTestId(`model-cell-name-${ruleBId}`)).toBeVisible();
+	});
+});
+
+// TC-05 is isolated — no seeded data; runs in a standalone describe so it
+// does not inherit the shared beforeAll seed.
+test.describe('LLM Pricing — Empty state', () => {
+	test('TC-05 empty state — zero rules returns empty table', async ({
+		authedPage: page,
+	}) => {
+		// Wait for the list request to complete before asserting the empty state
+		// so the test does not race against the initial fetch.
+		const listResponse = page.waitForResponse(
+			(r) =>
+				r.url().includes('llm_pricing_rules') && r.request().method() === 'GET',
+		);
+		await page.goto(LLM_PRICING_PATH);
+		await page.getByTestId('llm-observability-model-pricing-page').waitFor({ state: 'visible' });
+		await listResponse;
+
+		await expect(page.getByTestId('model-costs-table')).toBeVisible();
+		// No data rows — Ant Table renders its empty placeholder
+		await expect(page.getByText(/Showing 0 models/)).toBeVisible();
+	});
+});

tests/e2e/tests/llm-pricing/source-radio.spec.ts

@@ -0,0 +1,246 @@
+import { expect, test } from '../../fixtures/auth';
+import {
+	authToken,
+	createPricingRuleViaApi,
+	deletePricingRuleViaApi,
+	gotoLlmPricingPage,
+} from '../../helpers/llm-pricing';
+
+test.describe.configure({ mode: 'serial' });
+
+// Helper — executes in the browser context (Playwright evaluate). TypeScript
+// cannot see browser globals from Node, so we use `any` to avoid DOM-lib deps.
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+const getBorderColor = (el: any): string =>
+	// eslint-disable-next-line @typescript-eslint/no-explicit-any
+	(globalThis as any).getComputedStyle(el).borderColor;
+
+test.describe('LLM Pricing — Source radio behaviour', () => {
+	test('TC-15 Override → Auto triggers reset-confirm; Keep cancels it', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		await page.getByTestId('drawer-model-id-input').fill('e2e-src-switch');
+		await page.locator('[data-testid="drawer-input-cost"] input').fill('25');
+		await page.locator('[data-testid="drawer-output-cost"] input').fill('75');
+
+		// Confirm starting state: Override checked
+		await expect(page.getByTestId('drawer-source-override')).toHaveAttribute(
+			'data-state',
+			'checked',
+		);
+
+		// Click Auto — should trigger the reset-confirm dialog
+		await page.getByTestId('drawer-source-auto').click();
+
+		const resetDialog = page.locator(
+			'[role="dialog"][aria-label="Reset to default pricing"]',
+		);
+		await expect(resetDialog).toBeVisible();
+		(await expect(
+			resetDialog
+				.getByText(
+					'Reset to default pricing? Custom values will be discarded. it might take 24 hours for changes to take effect..',
+				)
+				.toBeVisible(),
+		),
+			await expect(page.getByTestId('drawer-reset-keep-btn')).toBeVisible());
+		await expect(page.getByTestId('drawer-reset-confirm-btn')).toBeVisible();
+
+		// While confirm is showing, the switch has NOT been applied yet
+		await expect(page.getByTestId('drawer-source-auto')).toHaveAttribute(
+			'data-state',
+			'unchecked',
+		);
+		await expect(page.getByTestId('drawer-source-override')).toHaveAttribute(
+			'data-state',
+			'checked',
+		);
+
+		// Click Keep — dialog dismisses without changing the radio
+		await page.getByTestId('drawer-reset-keep-btn').click();
+		await expect(resetDialog).not.toBeVisible();
+		await expect(page.getByTestId('drawer-source-override')).toHaveAttribute(
+			'data-state',
+			'checked',
+		);
+		await expect(
+			page.locator('[data-testid="drawer-input-cost"] input'),
+		).toHaveValue('25');
+		await expect(
+			page.locator('[data-testid="drawer-output-cost"] input'),
+		).toHaveValue('75');
+
+		await page.getByTestId('drawer-cancel-btn').click();
+	});
+
+	test('TC-16 Override → Auto then Reset clears values and switches to auto mode', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		await page.getByTestId('drawer-model-id-input').fill('e2e-src-reset');
+		await page.locator('[data-testid="drawer-input-cost"] input').fill('25');
+
+		await page.getByTestId('drawer-source-auto').click();
+		const resetDialog = page.locator(
+			'[role="dialog"][aria-label="Reset to default pricing"]',
+		);
+		await expect(resetDialog).toBeVisible();
+
+		await page.getByTestId('drawer-reset-confirm-btn').click();
+		await expect(resetDialog).not.toBeVisible();
+
+		// Radio has switched to Auto
+		await expect(page.getByTestId('drawer-source-auto')).toHaveAttribute(
+			'data-state',
+			'checked',
+		);
+		await expect(page.getByTestId('drawer-source-override')).toHaveAttribute(
+			'data-state',
+			'unchecked',
+		);
+
+		// Pricing inputs are now read-only
+		await expect(
+			page.locator('[data-testid="drawer-input-cost"] input'),
+		).toBeDisabled();
+		await expect(
+			page.locator('[data-testid="drawer-output-cost"] input'),
+		).toBeDisabled();
+
+		await page.getByTestId('drawer-cancel-btn').click();
+	});
+
+	test('TC-17 Auto → Override switching works without confirm', async ({
+		authedPage: page,
+	}) => {
+		const ruleId = await createPricingRuleViaApi(page, {
+			modelName: 'e2e-auto-switch',
+			provider: 'OpenAI',
+			isOverride: false,
+			inputCost: 1.0,
+			outputCost: 4.0,
+		});
+		try {
+			await gotoLlmPricingPage(page);
+			await page.getByTestId(`edit-rule-${ruleId}`).click();
+			await expect(page.getByText('Edit model cost').first()).toBeVisible();
+
+			await expect(page.getByTestId('drawer-source-auto')).toHaveAttribute(
+				'data-state',
+				'checked',
+			);
+			await expect(
+				page.locator('[data-testid="drawer-input-cost"] input'),
+			).toBeDisabled();
+
+			// Click Override — no reset-confirm should appear
+			await page.getByTestId('drawer-source-override').click();
+			await expect(
+				page.locator('[role="dialog"][aria-label="Reset to default pricing"]'),
+			).not.toBeVisible();
+
+			await expect(page.getByTestId('drawer-source-override')).toHaveAttribute(
+				'data-state',
+				'checked',
+			);
+			await expect(
+				page.locator('[data-testid="drawer-input-cost"] input'),
+			).toBeEnabled();
+		} finally {
+			await page
+				.getByTestId('drawer-cancel-btn')
+				.click()
+				.catch(() => undefined);
+			const token = await authToken(page);
+			await deletePricingRuleViaApi(page.request, ruleId, token);
+		}
+	});
+
+	test('TC-18 source radio card highlight — checked state gets tinted border', async ({
+		authedPage: page,
+	}) => {
+		const ruleId = await createPricingRuleViaApi(page, {
+			modelName: 'e2e-border-check',
+			provider: 'OpenAI',
+			isOverride: true,
+			inputCost: 1.0,
+			outputCost: 4.0,
+		});
+		try {
+			await gotoLlmPricingPage(page);
+			await page.getByTestId(`edit-rule-${ruleId}`).click();
+			await expect(page.getByText('Edit model cost').first()).toBeVisible();
+
+			// Override card is checked — its border-color must be non-transparent
+			const overrideCard = page.locator('.source-radio--override');
+			await expect(
+				overrideCard.locator('button[data-state="checked"]'),
+			).toBeVisible();
+			const overrideBorder = await overrideCard.evaluate(getBorderColor);
+			expect(overrideBorder).not.toBe('transparent');
+			expect(overrideBorder).not.toBe('rgba(0, 0, 0, 0)');
+
+			// Auto card is unchecked — its border-color should be transparent
+			const autoCard = page.locator('.source-radio--auto');
+			await expect(
+				autoCard.locator('button[data-state="unchecked"]'),
+			).toBeVisible();
+			const autoBorder = await autoCard.evaluate(getBorderColor);
+			expect(autoBorder).toBe('rgba(0, 0, 0, 0)');
+
+			// Switch to Auto and confirm reset
+			await page.getByTestId('drawer-source-auto').click();
+			const resetDialog = page.locator(
+				'[role="dialog"][aria-label="Reset to default pricing"]',
+			);
+			await expect(resetDialog).toBeVisible();
+			await page.getByTestId('drawer-reset-confirm-btn').click();
+			await expect(resetDialog).not.toBeVisible();
+
+			// Now Auto card has the tinted border; Override card is transparent
+			const autoBorderAfter = await autoCard.evaluate(getBorderColor);
+			expect(autoBorderAfter).not.toBe('transparent');
+			expect(autoBorderAfter).not.toBe('rgba(0, 0, 0, 0)');
+
+			const overrideBorderAfter = await overrideCard.evaluate(getBorderColor);
+			expect(overrideBorderAfter).toBe('rgba(0, 0, 0, 0)');
+		} finally {
+			await page
+				.getByTestId('drawer-cancel-btn')
+				.click()
+				.catch(() => undefined);
+			const token = await authToken(page);
+			await deletePricingRuleViaApi(page.request, ruleId, token);
+		}
+	});
+
+	test('TC-19 unchecked radio dot is visible — border not invisible against drawer surface', async ({
+		authedPage: page,
+	}) => {
+		await gotoLlmPricingPage(page);
+		await page.getByTestId('add-model-cost-btn').click();
+		await expect(page.getByText('Add model cost').first()).toBeVisible();
+
+		// In add mode, Override is checked and Auto is unchecked
+		const autoBtn = page.getByTestId('drawer-source-auto');
+		await expect(autoBtn).toHaveAttribute('data-state', 'unchecked');
+
+		// The CSS fix sets --radio-group-item-border-color: var(--bg-slate-200)
+		// on .source-radio-group; assert the computed border is not invisible.
+		const borderColor = await autoBtn.evaluate(getBorderColor);
+		expect(borderColor).not.toBe('transparent');
+		expect(borderColor).not.toBe('rgba(0, 0, 0, 0)');
+
+		// Auto label text is visible alongside the dot
+		await expect(page.getByText('Auto-populated').first()).toBeVisible();
+
+		await page.getByTestId('drawer-cancel-btn').click();
+	});
+});