refactor: trace details and and header changes

<!--A few plain bullets saying what changed and why, for a reviewer
skimming it - not a wall of text, not a restatement of the diff, not
generated boilerplate.-->
#### Description

- Adds `GET /api/v1/traces/{traceID}/summary`. It returns the trace
header fields shown with the waterfall, plus AI token and cost totals,
using one query.
- The waterfall loads every span to get these fields. It will stop
returning them once the frontend uses this endpoint.
- Fixes these waterfall bugs:
  - On traces over 10k spans, the entry point is empty.
- If some spans point to a parent that was never received, the root can
change on every reload.



| Trace size | Endpoint | Latency | Server memory | Data sent to server
|
|---|---|---|---|---|
| 2M spans | summary | 0.65 s | 84 MiB | 3 KB |
| 2M spans | waterfall | 12.5 s | 2.6 GiB | 128 MiB |

<!--Reference issues using `Closes #issue-number` to enable automatic
closure on merge. -->
#### Issues closed by this PR
Closes https://github.com/SigNoz/nerve-pod/issues/265

<!--Anything reviewers should keep in mind while reviewing -->
#### Additional Information
- AI token and cost fields are now typed `number`, the same as in
metadata.

---------

Co-authored-by: Srikanth Chekuri <srikanth.chekuri92@gmail.com>

.github/workflows/integrationci.yaml

@@ -68,6 +68,7 @@ jobs:
           - semconvfamilies
           - serviceaccount
           - spanmapper
+          - tracedetail
           - querier_json_body
           - querier_skip_resource_fingerprint
           - ttl

docs/api/openapi.yml

@@ -9844,6 +9844,40 @@ components:
       required:
       - aggregations
       type: object
+    SpantypesGettableTraceSummary:
+      properties:
+        ai:
+          $ref: '#/components/schemas/SpantypesTraceAISummary'
+        endTimestampMillis:
+          minimum: 0
+          type: integer
+        hasMissingSpans:
+          type: boolean
+        rootServiceEntryPoint:
+          type: string
+        rootServiceName:
+          type: string
+        rootSpanStatusCode:
+          type: string
+        startTimestampMillis:
+          minimum: 0
+          type: integer
+        totalErrorSpansCount:
+          minimum: 0
+          type: integer
+        totalSpansCount:
+          minimum: 0
+          type: integer
+      required:
+      - startTimestampMillis
+      - endTimestampMillis
+      - rootServiceName
+      - rootServiceEntryPoint
+      - rootSpanStatusCode
+      - totalSpansCount
+      - totalErrorSpansCount
+      - hasMissingSpans
+      type: object
     SpantypesGettableWaterfallTrace:
       properties:
         endTimestampMillis:
@@ -10158,6 +10192,39 @@ components:
           nullable: true
           type: object
       type: object
+    SpantypesTraceAISummary:
+      properties:
+        tokens:
+          $ref: '#/components/schemas/SpantypesTraceAITokens'
+        totalCost:
+          type: number
+      required:
+      - tokens
+      type: object
+    SpantypesTraceAITokens:
+      properties:
+        cacheRead:
+          minimum: 0
+          type: integer
+        cacheWrite:
+          minimum: 0
+          type: integer
+        input:
+          minimum: 0
+          type: integer
+        output:
+          minimum: 0
+          type: integer
+        reasoning:
+          minimum: 0
+          type: integer
+      required:
+      - input
+      - output
+      - cacheRead
+      - cacheWrite
+      - reasoning
+      type: object
     SpantypesUpdatableSpanMapper:
       properties:
         config:
@@ -15882,6 +15949,66 @@ paths:
       tags:
       - tracedetail
       x-signoz-stability: alpha
+  /api/v1/traces/{traceID}/summary:
+    get:
+      deprecated: false
+      description: Returns the trace's time range, root span, span and error counts,
+        and whether any spans are missing. AI traces also include token and cost totals.
+      operationId: GetTraceSummary
+      parameters:
+      - in: path
+        name: traceID
+        required: true
+        schema:
+          type: string
+      responses:
+        "200":
+          content:
+            application/json:
+              schema:
+                properties:
+                  data:
+                    $ref: '#/components/schemas/SpantypesGettableTraceSummary'
+                  status:
+                    type: string
+                required:
+                - status
+                - data
+                type: object
+          description: OK
+        "401":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Unauthorized
+        "403":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Forbidden
+        "404":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Not Found
+        "500":
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/RenderErrorResponse'
+          description: Internal Server Error
+      security:
+      - api_key:
+        - VIEWER
+      - tokenizer:
+        - VIEWER
+      summary: Get summary for a trace
+      tags:
+      - tracedetail
+      x-signoz-stability: alpha
   /api/v1/user/me:
     get:
       deprecated: true

frontend/scripts/story-shots.mjs

@@ -417,7 +417,7 @@ for (const theme of themes.length ? themes : [null]) {
 						break;
 					}
 
-					height = needed;
+					height = Math.ceil(needed);
 					await page.setViewportSize({ width: Number(opts.width), height });
 					await page.waitForTimeout(Number(opts.settle));
 				}

frontend/src/api/generated/services/sigNoz.schemas.ts

@@ -11335,6 +11335,82 @@ export interface SpantypesGettableTraceAggregationsDTO {
 	aggregations: SpantypesSpanAggregationResultDTO[];
 }
 
+export interface SpantypesTraceAITokensDTO {
+	/**
+	 * @type integer
+	 * @minimum 0
+	 */
+	cacheRead: number;
+	/**
+	 * @type integer
+	 * @minimum 0
+	 */
+	cacheWrite: number;
+	/**
+	 * @type integer
+	 * @minimum 0
+	 */
+	input: number;
+	/**
+	 * @type integer
+	 * @minimum 0
+	 */
+	output: number;
+	/**
+	 * @type integer
+	 * @minimum 0
+	 */
+	reasoning: number;
+}
+
+export interface SpantypesTraceAISummaryDTO {
+	tokens: SpantypesTraceAITokensDTO;
+	/**
+	 * @type number
+	 */
+	totalCost?: number;
+}
+
+export interface SpantypesGettableTraceSummaryDTO {
+	ai?: SpantypesTraceAISummaryDTO;
+	/**
+	 * @type integer
+	 * @minimum 0
+	 */
+	endTimestampMillis: number;
+	/**
+	 * @type boolean
+	 */
+	hasMissingSpans: boolean;
+	/**
+	 * @type string
+	 */
+	rootServiceEntryPoint: string;
+	/**
+	 * @type string
+	 */
+	rootServiceName: string;
+	/**
+	 * @type string
+	 */
+	rootSpanStatusCode: string;
+	/**
+	 * @type integer
+	 * @minimum 0
+	 */
+	startTimestampMillis: number;
+	/**
+	 * @type integer
+	 * @minimum 0
+	 */
+	totalErrorSpansCount: number;
+	/**
+	 * @type integer
+	 * @minimum 0
+	 */
+	totalSpansCount: number;
+}
+
 export interface SpantypesOtelSpanRefDTO {
 	/**
 	 * @type string
@@ -13023,6 +13099,17 @@ export type GetTraceAggregations200 = {
 	status: string;
 };
 
+export type GetTraceSummaryPathParameters = {
+	traceID: string;
+};
+export type GetTraceSummary200 = {
+	data: SpantypesGettableTraceSummaryDTO;
+	/**
+	 * @type string
+	 */
+	status: string;
+};
+
 export type ListUserPreferences200 = {
 	/**
 	 * @type array

frontend/src/api/generated/services/tracedetail/index.ts

@@ -4,11 +4,17 @@
  * * regenerate with 'pnpm generate:api'
  * SigNoz
  */
-import { useMutation } from 'react-query';
+import { useMutation, useQuery } from 'react-query';
 import type {
+	InvalidateOptions,
 	MutationFunction,
+	QueryClient,
+	QueryFunction,
+	QueryKey,
 	UseMutationOptions,
 	UseMutationResult,
+	UseQueryOptions,
+	UseQueryResult,
 } from 'react-query';
 
 import type {
@@ -16,6 +22,8 @@ import type {
 	GetFlamegraphPathParameters,
 	GetTraceAggregations200,
 	GetTraceAggregationsPathParameters,
+	GetTraceSummary200,
+	GetTraceSummaryPathParameters,
 	GetWaterfallV4200,
 	GetWaterfallV4PathParameters,
 	RenderErrorResponseDTO,
@@ -27,6 +35,26 @@ import type {
 import { GeneratedAPIInstance } from '../../../generatedAPIInstance';
 import type { ErrorType, BodyType } from '../../../generatedAPIInstance';
 
+const withQueryKey = <T extends object, K>(
+	query: T,
+	queryKey: K,
+): T & { queryKey: K } => {
+	const result = { queryKey } as T & { queryKey: K };
+	for (const key of Object.keys(query)) {
+		// The explicit queryKey always wins, matching the previous
+		// `{ ...query, queryKey }` spread where it was set last.
+		if (key === 'queryKey') {
+			continue;
+		}
+		Object.defineProperty(result, key, {
+			enumerable: true,
+			configurable: true,
+			get: () => (query as Record<string, unknown>)[key],
+		});
+	}
+	return result;
+};
+
 /**
  * Computes span aggregations grouped by requested field.
  * @summary Get aggregations for a trace
@@ -127,6 +155,108 @@ export const useGetTraceAggregations = <
 > => {
 	return useMutation(getGetTraceAggregationsMutationOptions(options));
 };
+/**
+ * Returns the trace's time range, root span, span and error counts, and whether any spans are missing. AI traces also include token and cost totals.
+ * @summary Get summary for a trace
+ */
+export const getTraceSummary = (
+	{ traceID }: GetTraceSummaryPathParameters,
+	signal?: AbortSignal,
+) => {
+	return GeneratedAPIInstance<GetTraceSummary200>({
+		url: `/api/v1/traces/${traceID}/summary`,
+		method: 'GET',
+		signal,
+	});
+};
+
+export const getGetTraceSummaryQueryKey = ({
+	traceID,
+}: GetTraceSummaryPathParameters) => {
+	return [`/api/v1/traces/${traceID}/summary`] as const;
+};
+
+export const getGetTraceSummaryQueryOptions = <
+	TData = Awaited<ReturnType<typeof getTraceSummary>>,
+	TError = ErrorType<RenderErrorResponseDTO>,
+>(
+	{ traceID }: GetTraceSummaryPathParameters,
+	options?: {
+		query?: UseQueryOptions<
+			Awaited<ReturnType<typeof getTraceSummary>>,
+			TError,
+			TData
+		>;
+	},
+) => {
+	const { query: queryOptions } = options ?? {};
+
+	const queryKey =
+		queryOptions?.queryKey ?? getGetTraceSummaryQueryKey({ traceID });
+
+	const queryFn: QueryFunction<Awaited<ReturnType<typeof getTraceSummary>>> = ({
+		signal,
+	}) => getTraceSummary({ traceID }, signal);
+
+	return {
+		queryKey,
+		queryFn,
+		enabled: traceID !== null && traceID !== undefined,
+		...queryOptions,
+	} as UseQueryOptions<
+		Awaited<ReturnType<typeof getTraceSummary>>,
+		TError,
+		TData
+	> & { queryKey: QueryKey };
+};
+
+export type GetTraceSummaryQueryResult = NonNullable<
+	Awaited<ReturnType<typeof getTraceSummary>>
+>;
+export type GetTraceSummaryQueryError = ErrorType<RenderErrorResponseDTO>;
+
+/**
+ * @summary Get summary for a trace
+ */
+
+export function useGetTraceSummary<
+	TData = Awaited<ReturnType<typeof getTraceSummary>>,
+	TError = ErrorType<RenderErrorResponseDTO>,
+>(
+	{ traceID }: GetTraceSummaryPathParameters,
+	options?: {
+		query?: UseQueryOptions<
+			Awaited<ReturnType<typeof getTraceSummary>>,
+			TError,
+			TData
+		>;
+	},
+): UseQueryResult<TData, TError> & { queryKey: QueryKey } {
+	const queryOptions = getGetTraceSummaryQueryOptions({ traceID }, options);
+
+	const query = useQuery(queryOptions) as UseQueryResult<TData, TError> & {
+		queryKey: QueryKey;
+	};
+
+	return withQueryKey(query, queryOptions.queryKey);
+}
+
+/**
+ * @summary Get summary for a trace
+ */
+export const invalidateGetTraceSummary = async (
+	queryClient: QueryClient,
+	{ traceID }: GetTraceSummaryPathParameters,
+	options?: InvalidateOptions,
+): Promise<QueryClient> => {
+	await queryClient.invalidateQueries(
+		{ queryKey: getGetTraceSummaryQueryKey({ traceID }) },
+		options,
+	);
+
+	return queryClient;
+};
+
 /**
  * Returns the flamegraph view of spans for a given trace ID.
  * @summary Get flamegraph view for a trace

frontend/src/components/QuickFilters/QuickFilters.styles.scss

@@ -12,6 +12,7 @@
 		overflow: visible;
 		position: relative;
 		align-self: stretch;
+		clip-path: inset(0 -100vw 0 0);
 	}
 }
 

frontend/src/components/QuickFilters/QuickFilters.tsx

@@ -57,6 +57,7 @@ export default function QuickFilters(props: IQuickFiltersProps): JSX.Element {
 		showFilterCollapse = true,
 		showQueryName = true,
 		useFieldApis,
+		savedViewsHeader,
 	} = props;
 	const [isSettingsOpen, setIsSettingsOpen] = useState(false);
 	const [params, setParams] = useApiMonitoringParams();
@@ -379,6 +380,7 @@ export default function QuickFilters(props: IQuickFiltersProps): JSX.Element {
 	return (
 		<div className="quick-filters-container">
 			<div className="quick-filters">
+				{savedViewsHeader}
 				{source !== QuickFiltersSource.INFRA_MONITORING && (
 					<section className="header">
 						{renderLeftActions()}

frontend/src/components/QuickFilters/QuickFiltersLayout/QuickFiltersLayout.module.scss

@@ -8,9 +8,7 @@
 	overflow: hidden;
 }
 
-// Positioned so overlays (settings drawer) paint above the content pane
-// without changing this pane's layout width.
-.filters {
+.sidebar {
 	width: 280px;
 	flex-shrink: 0;
 	display: flex;
@@ -21,6 +19,44 @@
 	z-index: 2;
 }
 
+.savedViews {
+	flex: 1;
+	min-height: 0;
+	display: flex;
+	flex-direction: column;
+	background: var(--l1-background);
+	border-right: 1px solid var(--l1-border);
+}
+
+.quickFilters {
+	position: absolute;
+	inset: 0;
+	display: flex;
+	flex-direction: column;
+	min-height: 0;
+	background: var(--l1-background);
+	transition: transform 0.2s ease-in-out;
+	z-index: 1;
+
+	&.isOpen {
+		transform: translateX(100%);
+	}
+}
+
+// No quick filters: the header sits in flow and the list stays under it
+.isStatic {
+	border-right: 1px solid var(--l1-border);
+
+	.quickFilters {
+		position: static;
+		flex-shrink: 0;
+	}
+
+	.savedViews {
+		border-right: 0;
+	}
+}
+
 // Bounded box for the OverlayScrollbar inside it (`.overlay-scrollbar` is
 // `height: 100%`), which owns the scrolling.
 .content {
@@ -31,3 +67,7 @@
 	flex-direction: column;
 	overflow: hidden;
 }
+
+.contentInner {
+	height: 100%;
+}

frontend/src/components/QuickFilters/QuickFiltersLayout/QuickFiltersLayout.tsx

@@ -1,6 +1,9 @@
-import { ComponentProps, ReactNode } from 'react';
+import { ComponentProps, ReactNode, useState } from 'react';
 import cx from 'classnames';
 import OverlayScrollbar from 'components/OverlayScrollbar/OverlayScrollbar';
+import SavedViewsHeader from 'container/SavedViews/SavedViewsHeader';
+import SavedViewsPanel from 'container/SavedViews/SavedViewsPanel';
+import { useSavedViewEnabled } from 'hooks/useSavedViewEnabled';
 
 import QuickFilters from '../QuickFilters';
 
@@ -12,8 +15,15 @@ type QuickFiltersElementProps = JSX.LibraryManagedAttributes<
 	ComponentProps<typeof QuickFilters>
 >;
 
+// What the page configures; the layout adds the open / close wiring.
+type SavedViewsElementProps = Omit<
+	ComponentProps<typeof SavedViewsPanel>,
+	'onClose'
+>;
+
 export interface QuickFiltersLayoutProps {
-	quickFilterProps: QuickFiltersElementProps;
+	quickFilterProps?: QuickFiltersElementProps;
+	savedViewProps?: SavedViewsElementProps;
 	showFilters: boolean;
 	className?: string;
 	contentClassName?: string;
@@ -23,20 +33,60 @@ export interface QuickFiltersLayoutProps {
 
 function QuickFiltersLayout({
 	quickFilterProps,
+	savedViewProps,
 	showFilters,
 	className,
 	contentClassName,
 	testId,
 	children,
 }: QuickFiltersLayoutProps): JSX.Element {
+	const [isViewsOpen, setIsViewsOpen] = useState(false);
+	const isSavedViewEnabled = useSavedViewEnabled();
+
+	const hasQuickFilters = !!quickFilterProps;
+	const hasSavedViews = !!savedViewProps && isSavedViewEnabled;
+
+	const showSidebar = showFilters && (hasQuickFilters || hasSavedViews);
+
+	const isPanelPinned = hasSavedViews && !hasQuickFilters;
+
+	const isSliding = hasQuickFilters && isViewsOpen;
+
+	const savedViewsHeader = hasSavedViews ? (
+		<SavedViewsHeader
+			{...savedViewProps}
+			onOpenViews={isPanelPinned ? undefined : (): void => setIsViewsOpen(true)}
+		/>
+	) : undefined;
+
 	return (
 		<div className={cx(styles.layout, className)} data-testid={testId}>
-			{showFilters && (
+			{showSidebar && (
 				<aside
-					className={styles.filters}
+					className={cx(styles.sidebar, { [styles.isStatic]: !hasQuickFilters })}
 					data-testid="quick-filters-layout-filters"
 				>
-					<QuickFilters {...quickFilterProps} />
+					<div
+						className={cx(styles.quickFilters, { [styles.isOpen]: isSliding })}
+						data-testid="quick-filters-layout-drawer"
+					>
+						{hasQuickFilters ? (
+							<QuickFilters
+								{...quickFilterProps}
+								savedViewsHeader={savedViewsHeader}
+							/>
+						) : (
+							savedViewsHeader
+						)}
+					</div>
+					<div className={styles.savedViews}>
+						{hasSavedViews && (isPanelPinned || isViewsOpen) && (
+							<SavedViewsPanel
+								{...savedViewProps}
+								onClose={isPanelPinned ? undefined : (): void => setIsViewsOpen(false)}
+							/>
+						)}
+					</div>
 				</aside>
 			)}
 			<section
@@ -44,7 +94,7 @@ function QuickFiltersLayout({
 				data-testid="quick-filters-layout-content"
 			>
 				<OverlayScrollbar>
-					<div>{children}</div>
+					<div className={styles.contentInner}>{children}</div>
 				</OverlayScrollbar>
 			</section>
 		</div>

frontend/src/components/QuickFilters/QuickFiltersLayout/__tests__/QuickFiltersLayout.test.tsx

@@ -1,4 +1,6 @@
-import { render, screen } from 'tests/test-utils';
+import { SavedviewtypesSourceDTO } from 'api/generated/services/sigNoz.schemas';
+import { useSavedViewEnabled } from 'hooks/useSavedViewEnabled';
+import { render, screen, userEvent } from 'tests/test-utils';
 
 import { QuickFiltersSource } from '../../types';
 import QuickFiltersLayout from '../QuickFiltersLayout';
@@ -7,15 +9,33 @@ jest.mock('../QuickFiltersLayout.module.scss', () => ({
 	__esModule: true,
 	default: {
 		layout: 'layout',
-		filters: 'filters',
+		sidebar: 'sidebar',
+		isStatic: 'isStatic',
+		savedViews: 'savedViews',
+		quickFilters: 'quickFilters',
+		isOpen: 'isOpen',
 		content: 'content',
+		contentInner: 'contentInner',
 	},
 }));
 
+jest.mock('hooks/useSavedViewEnabled', () => ({
+	useSavedViewEnabled: jest.fn(() => true),
+}));
+
 jest.mock('../../QuickFilters', () => ({
 	__esModule: true,
-	default: ({ source }: { source: string }): JSX.Element => (
-		<div data-testid="quick-filters">{source}</div>
+	default: ({
+		source,
+		savedViewsHeader,
+	}: {
+		source: string;
+		savedViewsHeader?: React.ReactNode;
+	}): JSX.Element => (
+		<div data-testid="quick-filters">
+			{savedViewsHeader}
+			{source}
+		</div>
 	),
 }));
 
@@ -23,8 +43,16 @@ const quickFilterProps = {
 	source: QuickFiltersSource.TRACES_EXPLORER,
 	handleFilterVisibilityChange: jest.fn(),
 };
+const savedViewProps = { source: SavedviewtypesSourceDTO.traces };
+
+const drawer = (): HTMLElement =>
+	screen.getByTestId('quick-filters-layout-drawer');
 
 describe('QuickFiltersLayout', () => {
+	beforeEach(() => {
+		jest.mocked(useSavedViewEnabled).mockReturnValue(true);
+	});
+
 	it('renders QuickFilters with the given props inside the filters pane', () => {
 		render(
 			<QuickFiltersLayout showFilters quickFilterProps={quickFilterProps}>
@@ -40,11 +68,16 @@ describe('QuickFiltersLayout', () => {
 		expect(screen.getByTestId('quick-filters-layout-content')).toHaveTextContent(
 			'content',
 		);
+		expect(screen.queryByTestId('saved-views-header')).not.toBeInTheDocument();
 	});
 
 	it('does not render the filters pane when showFilters is false', () => {
 		render(
-			<QuickFiltersLayout showFilters={false} quickFilterProps={quickFilterProps}>
+			<QuickFiltersLayout
+				showFilters={false}
+				quickFilterProps={quickFilterProps}
+				savedViewProps={savedViewProps}
+			>
 				<div>content</div>
 			</QuickFiltersLayout>,
 		);
@@ -56,24 +89,138 @@ describe('QuickFiltersLayout', () => {
 		expect(screen.getByText('content')).toBeInTheDocument();
 	});
 
+	it('renders no sidebar at all without quick filters or saved views', () => {
+		render(
+			<QuickFiltersLayout showFilters>
+				<div>content</div>
+			</QuickFiltersLayout>,
+		);
+
+		expect(
+			screen.queryByTestId('quick-filters-layout-filters'),
+		).not.toBeInTheDocument();
+		expect(screen.getByText('content')).toBeInTheDocument();
+	});
+
 	it('merges classNames onto the root and content panes', () => {
 		render(
 			<QuickFiltersLayout
 				showFilters
 				quickFilterProps={quickFilterProps}
-				className="page-root"
-				contentClassName="page-content"
-				testId="page"
+				className="root-extra"
+				contentClassName="content-extra"
+				testId="layout"
 			>
 				<div>content</div>
 			</QuickFiltersLayout>,
 		);
 
-		const root = screen.getByTestId('page');
-		expect(root).toHaveClass('layout', 'page-root');
+		expect(screen.getByTestId('layout')).toHaveClass('layout', 'root-extra');
 		expect(screen.getByTestId('quick-filters-layout-content')).toHaveClass(
 			'content',
-			'page-content',
+			'content-extra',
 		);
 	});
+
+	describe('saved views', () => {
+		it('ignores savedViewProps while the flag is off', () => {
+			jest.mocked(useSavedViewEnabled).mockReturnValue(false);
+			const { unmount } = render(
+				<QuickFiltersLayout
+					showFilters
+					quickFilterProps={quickFilterProps}
+					savedViewProps={savedViewProps}
+				>
+					<div>content</div>
+				</QuickFiltersLayout>,
+			);
+
+			expect(screen.getByTestId('quick-filters')).toBeInTheDocument();
+			expect(screen.queryByTestId('saved-views-header')).not.toBeInTheDocument();
+			expect(screen.queryByTestId('saved-views-panel')).not.toBeInTheDocument();
+
+			// Saved views only, so nothing is left to show.
+			unmount();
+			render(
+				<QuickFiltersLayout showFilters savedViewProps={savedViewProps}>
+					<div>content</div>
+				</QuickFiltersLayout>,
+			);
+			expect(
+				screen.queryByTestId('quick-filters-layout-filters'),
+			).not.toBeInTheDocument();
+		});
+
+		it('opens the panel from the header and slides the quick filters drawer, keeping the same QuickFilters node', async () => {
+			render(
+				<QuickFiltersLayout
+					showFilters
+					quickFilterProps={quickFilterProps}
+					savedViewProps={savedViewProps}
+				>
+					<div>content</div>
+				</QuickFiltersLayout>,
+			);
+			const user = userEvent.setup();
+			const quickFilters = screen.getByTestId('quick-filters');
+
+			expect(quickFilters).toContainElement(
+				screen.getByTestId('saved-views-header'),
+			);
+			expect(drawer()).toContainElement(quickFilters);
+			expect(screen.queryByTestId('saved-views-panel')).not.toBeInTheDocument();
+			expect(drawer()).not.toHaveClass('isOpen');
+
+			await user.click(screen.getByTestId('saved-views-open'));
+
+			expect(screen.getByTestId('saved-views-panel')).toBeInTheDocument();
+			expect(drawer()).toHaveClass('isOpen');
+			expect(screen.getByTestId('quick-filters')).toBe(quickFilters);
+
+			await user.click(screen.getByTestId('saved-views-close'));
+
+			expect(screen.queryByTestId('saved-views-panel')).not.toBeInTheDocument();
+			expect(drawer()).not.toHaveClass('isOpen');
+			expect(screen.getByTestId('quick-filters')).toBe(quickFilters);
+		});
+
+		it('hands the source to the header and the panel', async () => {
+			render(
+				<QuickFiltersLayout
+					showFilters
+					quickFilterProps={quickFilterProps}
+					savedViewProps={savedViewProps}
+				>
+					<div>content</div>
+				</QuickFiltersLayout>,
+			);
+
+			expect(screen.getByTestId('saved-views-header')).toHaveAttribute(
+				'data-source',
+				SavedviewtypesSourceDTO.traces,
+			);
+			await userEvent.setup().click(screen.getByTestId('saved-views-open'));
+			expect(screen.getByTestId('saved-views-panel')).toHaveAttribute(
+				'data-source',
+				SavedviewtypesSourceDTO.traces,
+			);
+		});
+
+		it('without quick filters: static sidebar, header on top, list always on screen with no open or close controls', () => {
+			render(
+				<QuickFiltersLayout showFilters savedViewProps={savedViewProps}>
+					<div>content</div>
+				</QuickFiltersLayout>,
+			);
+
+			const sidebar = screen.getByTestId('quick-filters-layout-filters');
+			expect(sidebar).toHaveClass('isStatic');
+			expect(screen.queryByTestId('quick-filters')).not.toBeInTheDocument();
+			expect(screen.getByTestId('saved-views-header')).toBeInTheDocument();
+			expect(screen.getByTestId('saved-views-panel')).toBeInTheDocument();
+			expect(screen.queryByTestId('saved-views-open')).not.toBeInTheDocument();
+			expect(screen.queryByTestId('saved-views-close')).not.toBeInTheDocument();
+			expect(drawer()).not.toHaveClass('isOpen');
+		});
+	});
 });

frontend/src/components/QuickFilters/QuickFiltersSettings/QuickFiltersSettings.styles.scss

@@ -8,12 +8,20 @@
 	width: 342px;
 	height: 100%;
 	background: var(--l1-background);
-	transition: width 0.05s ease-in-out;
+	border-right: 1px solid var(--l1-border);
 	overflow: hidden;
 	color: var(--l1-foreground);
+	transition:
+		transform 0.2s ease-in-out,
+		visibility 0s;
 
 	&.hidden {
-		width: 0;
+		transform: translateX(-100%);
+		visibility: hidden;
+		pointer-events: none;
+		transition:
+			transform 0.2s ease-in-out,
+			visibility 0s 0.2s;
 	}
 	.qf-header {
 		display: flex;

frontend/src/components/QuickFilters/types.ts

@@ -1,3 +1,4 @@
+import { ReactNode } from 'react';
 import { BaseAutocompleteData } from 'types/api/queryBuilder/queryAutocompleteResponse';
 import { Query } from 'types/api/queryBuilder/queryBuilderData';
 import { DataSource } from 'types/common/queryBuilder';
@@ -61,6 +62,7 @@ export interface IQuickFiltersProps {
 	showFilterCollapse?: boolean;
 	showQueryName?: boolean;
 	useFieldApis?: QuickFilterCheckboxUseFieldApis;
+	savedViewsHeader?: ReactNode;
 }
 
 export enum QuickFiltersSource {

frontend/src/container/MetricsExplorer/Explorer/Explorer.tsx

@@ -10,6 +10,8 @@ import WarningPopover from 'components/WarningPopover/WarningPopover';
 import { initialQueriesMap, PANEL_TYPES } from 'constants/queryBuilder';
 import { REACT_QUERY_KEY } from 'constants/reactQueryKeys';
 import { usePageActions } from 'container/AIAssistant/pageActions/usePageActions';
+import { SavedviewtypesSourceDTO } from 'api/generated/services/sigNoz.schemas';
+import QuickFiltersLayout from 'components/QuickFilters/QuickFiltersLayout/QuickFiltersLayout';
 import ExplorerOptionWrapper from 'container/ExplorerOptions/ExplorerOptionWrapper';
 import RightToolbarActions from 'container/QueryBuilder/components/ToolbarActions/RightToolbarActions';
 import DateTimeSelector from 'container/TopNav/DateTimeSelectionV2';
@@ -347,57 +349,62 @@ function Explorer(): JSX.Element {
 
 	return (
 		<Sentry.ErrorBoundary fallback={<ErrorBoundaryFallback />}>
-			<div className="metrics-explorer-explore-container">
-				<div className="explore-header">
-					<div className="explore-header-left-actions">
-						<span>1 chart/query</span>
-						<Tooltip
-							open={disableOneChartPerQuery ? undefined : false}
-							title={oneChartPerQueryDisabledTooltip}
-						>
-							<Switch
-								value={showOneChartPerQuery}
-								onChange={handleToggleShowOneChartPerQuery}
-								disabled={disableOneChartPerQuery || splitedQueries.length <= 1}
+			<QuickFiltersLayout
+				showFilters
+				savedViewProps={{ source: SavedviewtypesSourceDTO.metrics }}
+			>
+				<div className="metrics-explorer-explore-container">
+					<div className="explore-header">
+						<div className="explore-header-left-actions">
+							<span>1 chart/query</span>
+							<Tooltip
+								open={disableOneChartPerQuery ? undefined : false}
+								title={oneChartPerQueryDisabledTooltip}
+							>
+								<Switch
+									value={showOneChartPerQuery}
+									onChange={handleToggleShowOneChartPerQuery}
+									disabled={disableOneChartPerQuery || splitedQueries.length <= 1}
+								/>
+							</Tooltip>
+						</div>
+						<div className="explore-header-right-actions">
+							{!isEmpty(warning) && <WarningPopover warningData={warning} />}
+							<DateTimeSelector showAutoRefresh />
+							<RightToolbarActions
+								onStageRunQuery={(): void => handleRunQuery()}
+								isLoadingQueries={isLoadingQueries}
+								handleCancelQuery={handleCancelQuery}
 							/>
-						</Tooltip>
+						</div>
 					</div>
-					<div className="explore-header-right-actions">
-						{!isEmpty(warning) && <WarningPopover warningData={warning} />}
-						<DateTimeSelector showAutoRefresh />
-						<RightToolbarActions
-							onStageRunQuery={(): void => handleRunQuery()}
-							isLoadingQueries={isLoadingQueries}
-							handleCancelQuery={handleCancelQuery}
+					<QueryBuilderV2
+						config={{ initialDataSource: DataSource.METRICS, queryVariant: 'static' }}
+						panelType={PANEL_TYPES.TIME_SERIES}
+						showFunctions={false}
+						version="v3"
+					/>
+					<div className="explore-content">
+						<TimeSeries
+							onFetchingStateChange={setIsLoadingQueries}
+							showOneChartPerQuery={showOneChartPerQuery}
+							setWarning={setWarning}
+							areAllMetricUnitsSame={areAllMetricUnitsSame}
+							isMetricUnitsLoading={isMetricUnitsLoading}
+							isMetricUnitsError={isMetricUnitsError}
+							metricUnits={units}
+							metricNames={metricNames}
+							metrics={metrics}
+							handleOpenMetricDetails={handleOpenMetricDetails}
+							yAxisUnit={yAxisUnit}
+							setYAxisUnit={setYAxisUnit}
+							showYAxisUnitSelector={showYAxisUnitSelector}
+							isCancelled={isCancelled}
+							exportDefaultQuery={exportDefaultQuery}
 						/>
 					</div>
 				</div>
-				<QueryBuilderV2
-					config={{ initialDataSource: DataSource.METRICS, queryVariant: 'static' }}
-					panelType={PANEL_TYPES.TIME_SERIES}
-					showFunctions={false}
-					version="v3"
-				/>
-				<div className="explore-content">
-					<TimeSeries
-						onFetchingStateChange={setIsLoadingQueries}
-						showOneChartPerQuery={showOneChartPerQuery}
-						setWarning={setWarning}
-						areAllMetricUnitsSame={areAllMetricUnitsSame}
-						isMetricUnitsLoading={isMetricUnitsLoading}
-						isMetricUnitsError={isMetricUnitsError}
-						metricUnits={units}
-						metricNames={metricNames}
-						metrics={metrics}
-						handleOpenMetricDetails={handleOpenMetricDetails}
-						yAxisUnit={yAxisUnit}
-						setYAxisUnit={setYAxisUnit}
-						showYAxisUnitSelector={showYAxisUnitSelector}
-						isCancelled={isCancelled}
-						exportDefaultQuery={exportDefaultQuery}
-					/>
-				</div>
-			</div>
+			</QuickFiltersLayout>
 			<ExplorerOptionWrapper
 				disabled={!stagedQuery}
 				query={exportDefaultQuery}

frontend/src/container/SavedViews/SavedViewsHeader.module.scss

@@ -0,0 +1,19 @@
+.header {
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+	gap: var(--spacing-2);
+	padding: var(--spacing-2) var(--spacing-3);
+	border-bottom: 1px solid var(--l1-border);
+	color: var(--l1-foreground);
+	flex-shrink: 0;
+}
+
+.name {
+	min-width: 0;
+	overflow: hidden;
+	text-overflow: ellipsis;
+	white-space: nowrap;
+	font-size: var(--font-size-sm);
+	font-weight: var(--font-weight-medium);
+}

frontend/src/container/SavedViews/SavedViewsHeader.tsx

@@ -0,0 +1,43 @@
+import { Menu } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import { Typography } from '@signozhq/ui/typography';
+import { SavedviewtypesSourceDTO } from 'api/generated/services/sigNoz.schemas';
+
+import styles from './SavedViewsHeader.module.scss';
+
+// Temp Placeholder data till main functionality is plugged in
+const PLACEHOLDER_VIEW_NAME = 'My view';
+
+function SavedViewsHeader({
+	source,
+	onOpenViews,
+}: {
+	source: SavedviewtypesSourceDTO;
+	// Absent when the list is always on screen.
+	onOpenViews?: () => void;
+}): JSX.Element {
+	return (
+		<div
+			className={styles.header}
+			data-testid="saved-views-header"
+			data-source={source}
+		>
+			<Typography.Text className={styles.name}>
+				{PLACEHOLDER_VIEW_NAME}
+			</Typography.Text>
+			{onOpenViews && (
+				<Button
+					variant="ghost"
+					color="secondary"
+					size="icon"
+					aria-label="All views"
+					prefix={<Menu size={14} />}
+					onClick={onOpenViews}
+					data-testid="saved-views-open"
+				/>
+			)}
+		</div>
+	);
+}
+
+export default SavedViewsHeader;

frontend/src/container/SavedViews/SavedViewsPanel.module.scss

@@ -0,0 +1,21 @@
+.panel {
+	display: flex;
+	flex-direction: column;
+	flex: 1;
+	min-height: 0;
+	color: var(--l1-foreground);
+}
+
+.header {
+	display: flex;
+	align-items: center;
+	justify-content: space-between;
+	padding: var(--spacing-2) var(--spacing-3);
+	border-bottom: 1px solid var(--l1-border);
+	flex-shrink: 0;
+}
+
+.title {
+	font-size: var(--font-size-sm);
+	font-weight: var(--font-weight-medium);
+}

frontend/src/container/SavedViews/SavedViewsPanel.tsx

@@ -0,0 +1,40 @@
+import { X } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import { Typography } from '@signozhq/ui/typography';
+import { SavedviewtypesSourceDTO } from 'api/generated/services/sigNoz.schemas';
+
+import styles from './SavedViewsPanel.module.scss';
+
+function SavedViewsPanel({
+	source,
+	onClose,
+}: {
+	source: SavedviewtypesSourceDTO;
+	// Absent when the list is always on screen.
+	onClose?: () => void;
+}): JSX.Element {
+	return (
+		<div
+			className={styles.panel}
+			data-testid="saved-views-panel"
+			data-source={source}
+		>
+			<div className={styles.header}>
+				<Typography.Text className={styles.title}>All views</Typography.Text>
+				{onClose && (
+					<Button
+						variant="ghost"
+						color="secondary"
+						size="icon"
+						aria-label="Close"
+						prefix={<X size={14} />}
+						onClick={onClose}
+						data-testid="saved-views-close"
+					/>
+				)}
+			</div>
+		</div>
+	);
+}
+
+export default SavedViewsPanel;

frontend/src/pages/DashboardPage/PanelEditorPage/stories/PanelEditorPage.stories.tsx

@@ -2,6 +2,7 @@ import type { ComponentType } from 'react';
 import type { Meta, StoryObj } from '@storybook/react-vite';
 import { Route } from 'react-router-dom';
 import ROUTES from 'constants/routes';
+import { userEvent, within } from 'storybook/test';
 
 import { storyMocks } from '@/storybook/controls/defineStoryMocks';
 import type { PageStoryArgs } from '@/storybook/runtime/resolveStory';
@@ -22,6 +23,7 @@ const pageStory = storyMocks(panelEditorMocks, { layout: 'app' });
  */
 const meta = {
 	title: 'Pages/Dashboards/Panel Editor',
+	tags: ['play'],
 	// The page is wrapped in `withAuthZPage`, which types its props as an index
 	// signature; the story's args are what the controls resolve to.
 	component: PanelEditorPage as ComponentType<PanelEditorArgs>,
@@ -38,6 +40,25 @@ export default meta;
 
 type Story = StoryObj<PanelEditorArgs>;
 
+const expandConfigSections: Story['play'] = async ({ canvasElement }) => {
+	const canvas = within(canvasElement);
+
+	const headers = await canvas.findAllByTestId(
+		/^config-section-/,
+		{},
+		{ timeout: 10000 },
+	);
+	for (const header of headers) {
+		if (header.getAttribute('aria-expanded') === 'false') {
+			await userEvent.click(header);
+		}
+	}
+	(document.activeElement as HTMLElement | null)?.blur();
+	for (let el = headers[0].parentElement; el; el = el.parentElement) {
+		el.scrollTop = 0;
+	}
+};
+
 /**
  * Editing a saved time series panel: the live preview over the query builder on
  * the left, the panel's formatting, legend, axes and thresholds on the right.
@@ -86,3 +107,57 @@ export const ReadOnly: Story = {
 export const Tooltips: Story = {
 	args: { tooltipsOpen: true },
 };
+
+/** A new time series panel's config pane, every section expanded. */
+export const ConfigTimeSeries: Story = {
+	args: { panel: 'new', newPanelKind: 'time-series' },
+	play: expandConfigSections,
+};
+
+/** A new number panel's config pane, every section expanded. */
+export const ConfigNumber: Story = {
+	args: { panel: 'new', newPanelKind: 'number' },
+	play: expandConfigSections,
+};
+
+/** A new table panel's config pane, every section expanded. */
+export const ConfigTable: Story = {
+	args: { panel: 'new', newPanelKind: 'table' },
+	play: expandConfigSections,
+};
+
+/** A new bar chart panel's config pane, every section expanded. */
+export const ConfigBarChart: Story = {
+	args: { panel: 'new', newPanelKind: 'bar-chart' },
+	play: expandConfigSections,
+};
+
+/** A new area chart panel's config pane, every section expanded. */
+export const ConfigAreaChart: Story = {
+	args: { panel: 'new', newPanelKind: 'area-chart' },
+	play: expandConfigSections,
+};
+
+/** A new pie chart panel's config pane, every section expanded. */
+export const ConfigPieChart: Story = {
+	args: { panel: 'new', newPanelKind: 'pie-chart' },
+	play: expandConfigSections,
+};
+
+/** A new histogram panel's config pane, every section expanded. */
+export const ConfigHistogram: Story = {
+	args: { panel: 'new', newPanelKind: 'histogram' },
+	play: expandConfigSections,
+};
+
+/** A new list panel's config pane, every section expanded. */
+export const ConfigList: Story = {
+	args: { panel: 'new', newPanelKind: 'list' },
+	play: expandConfigSections,
+};
+
+/** A new text panel's config pane, every section expanded. */
+export const ConfigText: Story = {
+	args: { panel: 'new', newPanelKind: 'text' },
+	play: expandConfigSections,
+};

frontend/src/pages/DashboardPage/PanelEditorPage/stories/__story_mockdata__/panelEditor.ts

@@ -21,12 +21,14 @@ import type { PanelKind } from '../../../DashboardContainer/Panels/types/panelKi
  */
 export const NEW_PANEL_KINDS = [
 	'time-series',
-	'bar-chart',
 	'number',
-	'pie-chart',
 	'table',
+	'bar-chart',
+	'area-chart',
+	'pie-chart',
 	'histogram',
 	'list',
+	'text',
 ] as const;
 
 export type NewPanelKind = (typeof NEW_PANEL_KINDS)[number];
@@ -34,11 +36,13 @@ export type NewPanelKind = (typeof NEW_PANEL_KINDS)[number];
 const KIND_BY_OPTION: Record<NewPanelKind, PanelKind> = {
 	'time-series': 'signoz/TimeSeriesPanel',
 	'bar-chart': 'signoz/BarChartPanel',
+	'area-chart': 'signoz/AreaChartPanel',
 	number: 'signoz/NumberPanel',
 	'pie-chart': 'signoz/PieChartPanel',
 	table: 'signoz/TablePanel',
 	histogram: 'signoz/HistogramPanel',
 	list: 'signoz/ListPanel',
+	text: 'signoz/TextPanel',
 };
 
 export const newPanelKindOf = (option: NewPanelKind): PanelKind =>

frontend/src/pages/DashboardPage/stories/DashboardPage.stories.tsx

@@ -285,6 +285,70 @@ export const SectionActionsMenu: Story = {
 	},
 };
 
+/**
+ * The new-panel picker opened from the toolbar: the panel kinds as tiles, with
+ * the target section to place the panel in.
+ */
+export const NewPanelPicker: Story = {
+	play: async ({ canvasElement }) => {
+		const canvas = within(canvasElement);
+
+		await userEvent.click(
+			await canvas.findByTestId('add-panel-header', {}, { timeout: 10000 }),
+		);
+		await screen.findByTestId('panel-type-signoz/TimeSeriesPanel');
+	},
+};
+
+/** The new-panel picker with a kind picked, waiting on the section to confirm. */
+export const NewPanelPickerTypeSelected: Story = {
+	play: async ({ canvasElement }) => {
+		const canvas = within(canvasElement);
+
+		await userEvent.click(
+			await canvas.findByTestId('add-panel-header', {}, { timeout: 10000 }),
+		);
+		await userEvent.click(
+			await screen.findByTestId('panel-type-signoz/TimeSeriesPanel'),
+		);
+	},
+};
+
+/**
+ * The new-panel picker on a dashboard without sections, where there is no
+ * section to choose.
+ */
+export const NewPanelPickerNoSections: Story = {
+	args: { sectioned: false },
+	play: async ({ canvasElement }) => {
+		const canvas = within(canvasElement);
+
+		await userEvent.click(
+			await canvas.findByTestId('add-panel-header', {}, { timeout: 10000 }),
+		);
+		await screen.findByTestId('panel-type-signoz/TimeSeriesPanel');
+	},
+};
+
+/**
+ * The new-panel picker opened from the second section's menu, targeting that
+ * section.
+ */
+export const NewPanelPickerFromSection: Story = {
+	play: async ({ canvasElement }) => {
+		const canvas = within(canvasElement);
+
+		const [, secondSection] = await canvas.findAllByRole(
+			'button',
+			{ name: 'Section actions' },
+			{ timeout: 10000 },
+		);
+		await userEvent.click(secondSection);
+		await userEvent.click(await screen.findByText('Add panel'));
+		await screen.findByTestId('panel-type-signoz/TimeSeriesPanel');
+	},
+};
+
 /**
  * A dashboard id nobody has, which is what a deleted or mistyped link opens on.
  *

frontend/src/pages/LogsExplorer/LogsExplorer.styles.scss

@@ -4,15 +4,10 @@
 	min-height: 0;
 	overflow: hidden;
 
-	.log-quick-filter-left-section {
-		width: 0%;
-		flex-shrink: 0;
-	}
-
 	.log-module-right-section {
 		display: flex;
 		flex-direction: column;
-		width: 100%;
+		height: 100%;
 		min-height: 0;
 
 		.log-explorer-query-container {
@@ -39,26 +34,4 @@
 			}
 		}
 	}
-
-	&.filter-visible {
-		.log-quick-filter-left-section {
-			width: 260px;
-			height: 100%;
-			overflow: visible;
-			min-height: 0;
-			position: relative;
-			z-index: 2;
-			display: flex;
-			flex-direction: column;
-
-			.quick-filters-container {
-				flex: 1;
-				min-height: 0;
-			}
-		}
-
-		.log-module-right-section {
-			width: calc(100% - 260px);
-		}
-	}
 }

frontend/src/pages/LogsExplorer/index.tsx

@@ -3,10 +3,10 @@ import { useQueryClient } from 'react-query';
 import * as Sentry from '@sentry/react';
 import getLocalStorageKey from 'api/browser/localstorage/get';
 import setLocalStorageApi from 'api/browser/localstorage/set';
-import cx from 'classnames';
 import ExplorerCard from 'components/ExplorerCard/ExplorerCard';
 import QueryCancelledPlaceholder from 'components/QueryCancelledPlaceholder';
-import QuickFilters from 'components/QuickFilters/QuickFilters';
+import { SavedviewtypesSourceDTO } from 'api/generated/services/sigNoz.schemas';
+import QuickFiltersLayout from 'components/QuickFilters/QuickFiltersLayout/QuickFiltersLayout';
 import { useSignalFieldApis } from 'components/QuickFilters/hooks/useSignalFieldApis';
 import { QuickFiltersSource, SignalType } from 'components/QuickFilters/types';
 import WarningPopover from 'components/WarningPopover/WarningPopover';
@@ -225,21 +225,19 @@ function LogsExplorer(): JSX.Element {
 	return (
 		<Sentry.ErrorBoundary fallback={<ErrorBoundaryFallback />}>
 			<EventSourceProvider>
-				<div
-					className={cx('logs-module-page', showFilters ? 'filter-visible' : '')}
+				<QuickFiltersLayout
+					className="logs-module-page"
+					showFilters={showFilters}
+					savedViewProps={{ source: SavedviewtypesSourceDTO.logs }}
+					quickFilterProps={{
+						className: 'qf-logs-explorer',
+						signal: SignalType.LOGS,
+						source: QuickFiltersSource.LOGS_EXPLORER,
+						handleFilterVisibilityChange,
+						useFieldApis: quickFilterFieldApis,
+					}}
 				>
-					{showFilters && (
-						<section className={cx('log-quick-filter-left-section')}>
-							<QuickFilters
-								className="qf-logs-explorer"
-								signal={SignalType.LOGS}
-								source={QuickFiltersSource.LOGS_EXPLORER}
-								handleFilterVisibilityChange={handleFilterVisibilityChange}
-								useFieldApis={quickFilterFieldApis}
-							/>
-						</section>
-					)}
-					<section className={cx('log-module-right-section')}>
+					<section className="log-module-right-section">
 						<Toolbar
 							showAutoRefresh={false}
 							leftActions={
@@ -292,7 +290,7 @@ function LogsExplorer(): JSX.Element {
 							</div>
 						</div>
 					</section>
-				</div>
+				</QuickFiltersLayout>
 			</EventSourceProvider>
 		</Sentry.ErrorBoundary>
 	);

frontend/src/pages/TraceDetailsV3/EntityMetadata/EntityMetadataItem.tsx

@@ -5,18 +5,23 @@ import { Typography } from '@signozhq/ui/typography';
 import styles from './EntityMetadataItem.module.scss';
 
 interface EntityMetadataItemProps {
-	tooltip: string;
+	tooltip: ReactNode;
+	tooltipClassName?: string;
 	icon?: ReactNode;
 	children: ReactNode;
 }
 
 function EntityMetadataItem({
 	tooltip,
+	tooltipClassName,
 	icon,
 	children,
 }: EntityMetadataItemProps): JSX.Element {
 	return (
-		<TooltipSimple title={tooltip}>
+		<TooltipSimple
+			title={tooltip}
+			tooltipContentProps={{ className: tooltipClassName }}
+		>
 			<span className={styles.item}>
 				{icon}
 				<Typography.Text as="span">{children}</Typography.Text>
@@ -27,6 +32,7 @@ function EntityMetadataItem({
 
 EntityMetadataItem.defaultProps = {
 	icon: null,
+	tooltipClassName: undefined,
 };
 
 export default EntityMetadataItem;

frontend/src/pages/TraceDetailsV3/EntityMetadata/EntityMetadataRow.module.scss

@@ -8,3 +8,7 @@
 	// Keep Typography.Text at the row's size (it reads this var, not inherited font-size).
 	--typography-font-size: var(--periscope-font-size-base);
 }
+
+.tokenTooltip {
+	min-width: 160px;
+}

frontend/src/pages/TraceDetailsV3/EntityMetadata/EntityMetadataRow.tsx

@@ -1,11 +1,21 @@
-import { CalendarClock, Server, Timer } from '@signozhq/icons';
+import {
+	CalendarClock,
+	CircleDollarSign,
+	Coins,
+	Server,
+	Timer,
+} from '@signozhq/icons';
 import { Badge } from '@signozhq/ui/badge';
 import cx from 'classnames';
 import { getYAxisFormattedValue } from 'components/Graph/yAxisConfig';
 import HttpStatusBadge from 'components/HttpStatusBadge/HttpStatusBadge';
 
+import { formatCost, formatTokens } from '../SpanHoverCard/aiUsage';
+import { TraceTokenUsage } from '../TraceDetailsHeader/types';
 import EntityMetadataItem from './EntityMetadataItem';
+import TokenUsageTooltip from './TokenUsageTooltip';
 
+import tooltipStyles from '../TraceTooltip/TraceTooltip.module.scss';
 import styles from './EntityMetadataRow.module.scss';
 
 interface EntityMetadataRowProps {
@@ -16,6 +26,8 @@ interface EntityMetadataRowProps {
 	execTimePercent?: number;
 	timestamp?: string;
 	statusCode?: string | number;
+	tokens?: TraceTokenUsage;
+	cost?: number | null;
 }
 
 const ICON_SIZE = 14;
@@ -32,6 +44,8 @@ function EntityMetadataRow({
 	execTimePercent,
 	timestamp,
 	statusCode,
+	tokens,
+	cost,
 }: EntityMetadataRowProps): JSX.Element {
 	const entityLabel = entity === 'trace' ? 'Trace' : 'Span';
 	const durationTooltip =
@@ -91,6 +105,25 @@ function EntityMetadataRow({
 					<HttpStatusBadge statusCode={statusCode} />
 				</EntityMetadataItem>
 			)}
+
+			{tokens && (
+				<EntityMetadataItem
+					tooltip={<TokenUsageTooltip tokens={tokens} />}
+					tooltipClassName={tooltipStyles.tooltipContent}
+					icon={<Coins size={ICON_SIZE} />}
+				>
+					Tokens: {formatTokens(tokens.input)} → {formatTokens(tokens.output)}
+				</EntityMetadataItem>
+			)}
+
+			{cost != null && (
+				<EntityMetadataItem
+					tooltip="Total cost"
+					icon={<CircleDollarSign size={ICON_SIZE} />}
+				>
+					{formatCost(cost)}
+				</EntityMetadataItem>
+			)}
 		</div>
 	);
 }
@@ -102,6 +135,8 @@ EntityMetadataRow.defaultProps = {
 	execTimePercent: undefined,
 	timestamp: undefined,
 	statusCode: undefined,
+	tokens: undefined,
+	cost: undefined,
 };
 
 export default EntityMetadataRow;

frontend/src/pages/TraceDetailsV3/EntityMetadata/TokenUsageTooltip.tsx

@@ -0,0 +1,38 @@
+import { formatTokens } from '../SpanHoverCard/aiUsage';
+import TooltipRow from '../TraceTooltip/TooltipRow';
+import TooltipSection from '../TraceTooltip/TooltipSection';
+import { TraceTokenUsage } from '../TraceDetailsHeader/types';
+
+import tooltipStyles from '../TraceTooltip/TraceTooltip.module.scss';
+import styles from './EntityMetadataRow.module.scss';
+
+interface TokenUsageTooltipProps {
+	tokens: TraceTokenUsage;
+}
+
+function TokenUsageTooltip({ tokens }: TokenUsageTooltipProps): JSX.Element {
+	const { input, output, cacheRead, cacheWrite, reasoning } = tokens;
+
+	return (
+		<div className={`${tooltipStyles.body} ${styles.tokenTooltip}`}>
+			<TooltipSection>
+				<TooltipRow label="Tokens" value={formatTokens(input + output)} isTotal />
+			</TooltipSection>
+			<TooltipSection>
+				<TooltipRow label="Input" value={formatTokens(input)} />
+				<TooltipRow label="Output" value={formatTokens(output)} />
+				{cacheRead !== undefined && (
+					<TooltipRow label="Cache read" value={formatTokens(cacheRead)} />
+				)}
+				{cacheWrite !== undefined && (
+					<TooltipRow label="Cache write" value={formatTokens(cacheWrite)} />
+				)}
+				{reasoning !== undefined && (
+					<TooltipRow label="Reasoning" value={formatTokens(reasoning)} />
+				)}
+			</TooltipSection>
+		</div>
+	);
+}
+
+export default TokenUsageTooltip;

frontend/src/pages/TraceDetailsV3/SpanHintBadge/SpanHintBadge.tsx

@@ -0,0 +1,37 @@
+import { CSSProperties } from 'react';
+import { Badge } from '@signozhq/ui/badge';
+import HttpStatusBadge from 'components/HttpStatusBadge/HttpStatusBadge';
+import { SpanV3 } from 'types/api/trace/getTraceV3';
+
+import { getAiSpanKind } from '../utils/genAi';
+import { AI_SPAN_BADGES } from './constants';
+
+interface SpanHintBadgeProps {
+	span: SpanV3;
+}
+
+function SpanHintBadge({ span }: SpanHintBadgeProps): JSX.Element | null {
+	const aiSpanKind = getAiSpanKind(span);
+
+	if (aiSpanKind) {
+		const { label, color } = AI_SPAN_BADGES[aiSpanKind];
+		return (
+			<Badge
+				variant="outline"
+				// The outline variant derives text, fill and border from this color.
+				style={{ '--badge-background': color } as CSSProperties}
+				data-testid={`span-hint-badge-${aiSpanKind}`}
+			>
+				{label}
+			</Badge>
+		);
+	}
+
+	if (!span.response_status_code) {
+		return null;
+	}
+
+	return <HttpStatusBadge statusCode={span.response_status_code} />;
+}
+
+export default SpanHintBadge;

frontend/src/pages/TraceDetailsV3/SpanHintBadge/__tests__/SpanHintBadge.test.tsx

@@ -0,0 +1,39 @@
+import { render, screen } from '@testing-library/react';
+import { SpanV3 } from 'types/api/trace/getTraceV3';
+
+import SpanHintBadge from '../SpanHintBadge';
+
+const spanWith = (
+	attributes: Record<string, string | number>,
+	responseStatusCode = '',
+): SpanV3 =>
+	({
+		attributes,
+		resource: {},
+		response_status_code: responseStatusCode,
+	}) as unknown as SpanV3;
+
+describe('SpanHintBadge', () => {
+	it.each([
+		[{ 'gen_ai.request.model': 'gpt-4o' }, 'LLM'],
+		[{ 'gen_ai.tool.name': 'search' }, 'TOOL'],
+		[{ 'gen_ai.agent.name': 'planner' }, 'AGENT'],
+	])('shows only the AI badge for %p', (attributes, label) => {
+		render(<SpanHintBadge span={spanWith(attributes, '200')} />);
+
+		expect(screen.getByText(label)).toBeInTheDocument();
+		expect(screen.queryByText('200')).not.toBeInTheDocument();
+	});
+
+	it('falls back to the HTTP status code for non-AI spans', () => {
+		render(<SpanHintBadge span={spanWith({}, '503')} />);
+
+		expect(screen.getByText('503')).toBeInTheDocument();
+	});
+
+	it('renders nothing for a non-AI span without a status code', () => {
+		const { container } = render(<SpanHintBadge span={spanWith({})} />);
+
+		expect(container).toBeEmptyDOMElement();
+	});
+});

frontend/src/pages/TraceDetailsV3/SpanHintBadge/constants.ts

@@ -0,0 +1,10 @@
+import { AiSpanKind } from '../utils/genAi';
+
+export const AI_SPAN_BADGES: Record<
+	AiSpanKind,
+	{ label: string; color: string }
+> = {
+	[AiSpanKind.Llm]: { label: 'LLM', color: 'rgba(155, 255, 0, 1)' },
+	[AiSpanKind.Tool]: { label: 'TOOL', color: 'rgba(255, 209, 0, 1)' },
+	[AiSpanKind.Agent]: { label: 'AGENT', color: 'rgba(255, 10, 138, 1)' },
+};

frontend/src/pages/TraceDetailsV3/SpanHoverCard/SpanHoverCard.module.scss

@@ -12,37 +12,16 @@
 	// Hover card may be rendered while the SpanDetailsPanel is docked as
 	// a FloatingPanel (z-index 999); bump above the default tooltip z-index.
 	--tooltip-z-index: 1000;
-	background-color: var(--l1-background);
-	padding: 8px 12px;
-	border-radius: 4px;
-	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
-	border: 1px solid var(--l2-border);
-	color: var(--l1-foreground);
 }
 
 .content {
-	font-size: 12px;
-	color: var(--l1-foreground);
+	min-width: 220px;
+	max-width: 320px;
 }
 
-.name {
-	font-weight: 600;
-	margin-bottom: 4px;
-}
-
-.row {
-	line-height: 1.5;
-	color: var(--l2-foreground);
-}
-
-.preview {
-	// container for additional preview rows
-}
-
-.previewKey {
-	color: var(--l2-foreground);
-}
-
-.previewValue {
-	color: var(--l1-foreground);
+.header {
+	display: flex;
+	flex-direction: column;
+	gap: 4px;
+	padding-bottom: 8px;
 }

frontend/src/pages/TraceDetailsV3/SpanHoverCard/SpanHoverCard.tsx

@@ -4,6 +4,8 @@ import {
 	TooltipProvider,
 	TooltipTrigger,
 } from '@signozhq/ui/tooltip';
+import { Typography } from '@signozhq/ui/typography';
+import cx from 'classnames';
 import { convertTimeToRelevantUnit } from 'utils/traceUtils';
 import { useIsDarkMode } from 'hooks/useDarkMode';
 import { useTraceStore } from 'pages/TraceDetailsV3/stores/traceStore';
@@ -12,6 +14,12 @@ import { useMemo } from 'react';
 import { SpanV3 } from 'types/api/trace/getTraceV3';
 import { toFixed } from 'utils/toFixed';
 
+import { getSpanAiDetails, SpanAiDetails } from './aiUsage';
+import SpanUsageBreakdown from './SpanUsageBreakdown';
+import TooltipRow from '../TraceTooltip/TooltipRow';
+import TooltipSection from '../TraceTooltip/TooltipSection';
+
+import tooltipStyles from '../TraceTooltip/TraceTooltip.module.scss';
 import styles from './SpanHoverCard.module.scss';
 
 /**
@@ -38,6 +46,7 @@ export interface SpanTooltipContentProps {
 	relativeStartMs: number;
 	durationMs: number;
 	previewRows?: SpanPreviewRow[];
+	ai?: SpanAiDetails;
 }
 
 export function SpanTooltipContent({
@@ -47,33 +56,46 @@ export function SpanTooltipContent({
 	relativeStartMs,
 	durationMs,
 	previewRows,
+	ai,
 }: SpanTooltipContentProps): JSX.Element {
 	const { time: formattedDuration, timeUnitName } =
 		convertTimeToRelevantUnit(durationMs);
 
 	return (
-		<div className={styles.content}>
-			<div className={styles.name} style={{ color }}>
-				{spanName}
-			</div>
-			<div className={styles.row}>status: {hasError ? 'error' : 'ok'}</div>
-			<div className={styles.row}>start: {toFixed(relativeStartMs, 2)} ms</div>
-			<div className={styles.row}>
-				duration: {toFixed(formattedDuration, 2)} {timeUnitName}
+		<div className={cx(tooltipStyles.body, styles.content)}>
+			<div className={styles.header}>
+				<Typography.Text className={tooltipStyles.title} style={{ color }}>
+					{spanName}
+				</Typography.Text>
+				{ai?.usage && (
+					<Typography.Text size="small" weight="medium">
+						Usage Breakdown
+					</Typography.Text>
+				)}
 			</div>
+			{ai?.usage && <SpanUsageBreakdown usage={ai.usage} />}
+			<TooltipSection>
+				{ai?.model && <TooltipRow label="model" value={ai.model} />}
+				{ai?.toolName && <TooltipRow label="tool" value={ai.toolName} />}
+				{ai?.agentName && <TooltipRow label="agent" value={ai.agentName} />}
+				<TooltipRow label="status" value={hasError ? 'error' : 'ok'} />
+				<TooltipRow label="start" value={`${toFixed(relativeStartMs, 2)} ms`} />
+				<TooltipRow
+					label="duration"
+					value={`${toFixed(formattedDuration, 2)} ${timeUnitName}`}
+				/>
+			</TooltipSection>
 			{previewRows && previewRows.length > 0 && (
-				<div className={styles.preview}>
+				<TooltipSection>
 					{previewRows.map((row) => (
-						<div
+						<TooltipRow
 							key={row.key}
-							className={styles.row}
-							data-testid={`span-hover-card-preview-${row.key}`}
-						>
-							<span className={styles.previewKey}>{row.key}:</span>{' '}
-							<span className={styles.previewValue}>{row.value}</span>
-						</div>
+							label={row.key}
+							value={row.value}
+							testId={`span-hover-card-preview-${row.key}`}
+						/>
 					))}
-				</div>
+				</TooltipSection>
 			)}
 		</div>
 	);
@@ -137,6 +159,7 @@ export function SpanHoverCard({
 				relativeStartMs: span.timestamp - traceStartTime,
 				durationMs: span.duration_nano / 1e6,
 				previewRows,
+				ai: getSpanAiDetails(span),
 			},
 		};
 	}, [
@@ -166,7 +189,7 @@ export function SpanHoverCard({
 					side="right"
 					align="start"
 					sideOffset={8}
-					className={styles.popover}
+					className={cx(tooltipStyles.tooltipContent, styles.popover)}
 				>
 					{hoverCardData && <SpanTooltipContent {...hoverCardData.tooltip} />}
 				</TooltipContent>

frontend/src/pages/TraceDetailsV3/SpanHoverCard/SpanUsageBreakdown.tsx

@@ -0,0 +1,47 @@
+import {
+	formatCost,
+	formatTokens,
+	getUsageTotals,
+	SpanAiUsage,
+} from './aiUsage';
+import TooltipRow from '../TraceTooltip/TooltipRow';
+import TooltipSection from '../TraceTooltip/TooltipSection';
+
+interface SpanUsageBreakdownProps {
+	usage: SpanAiUsage;
+}
+
+function SpanUsageBreakdown({ usage }: SpanUsageBreakdownProps): JSX.Element {
+	const { outputTokens = 0, cacheReadTokens, cacheCreationTokens, cost } = usage;
+	const { inputUsage, totalUsage } = getUsageTotals(usage);
+
+	return (
+		<>
+			<TooltipSection>
+				<TooltipRow label="Input usage" value={formatTokens(inputUsage)} isTotal />
+				{cacheReadTokens !== undefined && (
+					<TooltipRow label="cache read" value={formatTokens(cacheReadTokens)} />
+				)}
+				{cacheCreationTokens !== undefined && (
+					<TooltipRow
+						label="cache creation"
+						value={formatTokens(cacheCreationTokens)}
+					/>
+				)}
+			</TooltipSection>
+			<TooltipSection>
+				<TooltipRow
+					label="Output usage"
+					value={formatTokens(outputTokens)}
+					isTotal
+				/>
+			</TooltipSection>
+			<TooltipSection>
+				<TooltipRow label="Total usage" value={formatTokens(totalUsage)} isTotal />
+				{cost !== undefined && <TooltipRow label="cost" value={formatCost(cost)} />}
+			</TooltipSection>
+		</>
+	);
+}
+
+export default SpanUsageBreakdown;

frontend/src/pages/TraceDetailsV3/SpanHoverCard/__tests__/SpanTooltipContent.test.tsx

@@ -0,0 +1,144 @@
+import { render, screen } from '@testing-library/react';
+import { SpanV3 } from 'types/api/trace/getTraceV3';
+
+import { getSpanAiDetails, getUsageTotals } from '../aiUsage';
+import { SpanTooltipContent } from '../SpanHoverCard';
+
+const baseProps = {
+	spanName: 'chat gpt-4o',
+	color: '#fff',
+	hasError: false,
+	relativeStartMs: 268,
+	durationMs: 1110,
+};
+
+const spanWith = (attributes: Record<string, string | number>): SpanV3 =>
+	({ attributes, resource: {} }) as unknown as SpanV3;
+
+const usageAttributes = {
+	'gen_ai.usage.input_tokens': 1000,
+	'gen_ai.usage.output_tokens': 200,
+	'gen_ai.usage.cache_read.input_tokens': 600,
+	'gen_ai.usage.cache_creation.input_tokens': 100,
+};
+
+describe('getSpanAiDetails', () => {
+	it('returns undefined for a span without gen_ai attributes', () => {
+		expect(getSpanAiDetails(spanWith({ 'http.method': 'GET' }))).toBeUndefined();
+	});
+
+	it('reads model, tool, agent, token usage and cost', () => {
+		expect(
+			getSpanAiDetails(
+				spanWith({
+					'gen_ai.request.model': 'gpt-4o',
+					'gen_ai.tool.name': 'search',
+					'gen_ai.agent.name': 'planner',
+					'gen_ai.usage.input_tokens': '120',
+					'gen_ai.usage.output_tokens': 30,
+					'signoz.gen_ai.usage.tokens.cost': '0.00000056',
+				}),
+			),
+		).toStrictEqual({
+			model: 'gpt-4o',
+			toolName: 'search',
+			agentName: 'planner',
+			usage: {
+				inputTokens: 120,
+				outputTokens: 30,
+				cacheReadTokens: undefined,
+				cacheCreationTokens: undefined,
+				cost: 0.00000056,
+				isAnthropic: false,
+			},
+		});
+	});
+
+	it.each<Record<string, string>>([
+		{ 'gen_ai.provider.name': 'Anthropic' },
+		{ 'gen_ai.system': 'anthropic' },
+		{ 'gen_ai.response.model': 'claude-sonnet-4' },
+		{ 'gen_ai.request.model': 'anthropic.claude-v2' },
+	])('detects Anthropic from %p', (attributes) => {
+		expect(
+			getSpanAiDetails(spanWith({ ...usageAttributes, ...attributes }))?.usage
+				?.isAnthropic,
+		).toBe(true);
+	});
+});
+
+describe('getUsageTotals', () => {
+	it('adds cache tokens to input for Anthropic', () => {
+		const usage = getSpanAiDetails(
+			spanWith({ ...usageAttributes, 'gen_ai.provider.name': 'anthropic' }),
+		)?.usage;
+
+		expect(usage && getUsageTotals(usage)).toStrictEqual({
+			inputUsage: 1700,
+			totalUsage: 1900,
+		});
+	});
+
+	it('treats input as already including cache tokens for other providers', () => {
+		const usage = getSpanAiDetails(
+			spanWith({ ...usageAttributes, 'gen_ai.provider.name': 'openai' }),
+		)?.usage;
+
+		expect(usage && getUsageTotals(usage)).toStrictEqual({
+			inputUsage: 1000,
+			totalUsage: 1200,
+		});
+	});
+});
+
+describe('SpanTooltipContent', () => {
+	it('renders status, start and duration for a non-AI span', () => {
+		render(<SpanTooltipContent {...baseProps} />);
+
+		expect(screen.getByText('chat gpt-4o')).toBeInTheDocument();
+		expect(screen.getByText('ok')).toBeInTheDocument();
+		expect(screen.getByText('268 ms')).toBeInTheDocument();
+		expect(screen.getByText('1.11 s')).toBeInTheDocument();
+		expect(screen.queryByText('Usage Breakdown')).not.toBeInTheDocument();
+	});
+
+	it('renders the usage breakdown with cache rows and cost', () => {
+		render(
+			<SpanTooltipContent
+				{...baseProps}
+				ai={{
+					model: 'gpt-4o',
+					usage: {
+						inputTokens: 1000,
+						outputTokens: 200,
+						cacheReadTokens: 600,
+						cacheCreationTokens: 100,
+						cost: 0.00000056,
+						isAnthropic: false,
+					},
+				}}
+			/>,
+		);
+
+		expect(screen.getByText('Usage Breakdown')).toBeInTheDocument();
+		expect(screen.getByText('1,000')).toBeInTheDocument();
+		expect(screen.getByText('cache read')).toBeInTheDocument();
+		expect(screen.getByText('600')).toBeInTheDocument();
+		expect(screen.getByText('cache creation')).toBeInTheDocument();
+		expect(screen.getByText('1,200')).toBeInTheDocument();
+		expect(screen.getByText('$ 0.00000056')).toBeInTheDocument();
+	});
+
+	it('hides cache rows and cost when the attributes are absent', () => {
+		render(
+			<SpanTooltipContent
+				{...baseProps}
+				ai={{ usage: { inputTokens: 10, outputTokens: 5, isAnthropic: false } }}
+			/>,
+		);
+
+		expect(screen.queryByText('cache read')).not.toBeInTheDocument();
+		expect(screen.queryByText('cache creation')).not.toBeInTheDocument();
+		expect(screen.queryByText('cost')).not.toBeInTheDocument();
+	});
+});

frontend/src/pages/TraceDetailsV3/SpanHoverCard/aiUsage.ts

@@ -0,0 +1,97 @@
+import { getSpanAttribute } from 'pages/TraceDetailsV3/utils';
+import { SpanV3 } from 'types/api/trace/getTraceV3';
+
+import { GEN_AI_KEYS } from '../utils/genAi';
+
+export interface SpanAiUsage {
+	inputTokens?: number;
+	outputTokens?: number;
+	cacheReadTokens?: number;
+	cacheCreationTokens?: number;
+	cost?: number;
+	isAnthropic: boolean;
+}
+
+export interface SpanAiDetails {
+	model?: string;
+	toolName?: string;
+	agentName?: string;
+	usage?: SpanAiUsage;
+}
+
+function getNumber(span: SpanV3, key: string): number | undefined {
+	const value = getSpanAttribute(span, key);
+	if (value === undefined || value === '') {
+		return undefined;
+	}
+	const parsed = Number(value);
+	return Number.isFinite(parsed) ? parsed : undefined;
+}
+
+function isAnthropicSpan(span: SpanV3): boolean {
+	const provider = (
+		getSpanAttribute(span, GEN_AI_KEYS.providerName) ??
+		getSpanAttribute(span, GEN_AI_KEYS.system) ??
+		''
+	).toLowerCase();
+	const model = (
+		getSpanAttribute(span, GEN_AI_KEYS.responseModel) ??
+		getSpanAttribute(span, GEN_AI_KEYS.requestModel) ??
+		''
+	).toLowerCase();
+
+	return (
+		provider === 'anthropic' ||
+		model.includes('claude') ||
+		model.includes('anthropic')
+	);
+}
+
+export function getSpanAiDetails(span: SpanV3): SpanAiDetails | undefined {
+	const usage: SpanAiUsage = {
+		inputTokens: getNumber(span, GEN_AI_KEYS.inputTokens),
+		outputTokens: getNumber(span, GEN_AI_KEYS.outputTokens),
+		cacheReadTokens: getNumber(span, GEN_AI_KEYS.cacheReadTokens),
+		cacheCreationTokens: getNumber(span, GEN_AI_KEYS.cacheCreationTokens),
+		cost: getNumber(span, GEN_AI_KEYS.cost),
+		isAnthropic: isAnthropicSpan(span),
+	};
+	const hasUsage =
+		usage.inputTokens !== undefined || usage.outputTokens !== undefined;
+
+	const details: SpanAiDetails = {
+		model: getSpanAttribute(span, GEN_AI_KEYS.requestModel) || undefined,
+		toolName: getSpanAttribute(span, GEN_AI_KEYS.toolName) || undefined,
+		agentName: getSpanAttribute(span, GEN_AI_KEYS.agentName) || undefined,
+		usage: hasUsage ? usage : undefined,
+	};
+
+	return details.model || details.toolName || details.agentName || hasUsage
+		? details
+		: undefined;
+}
+
+/**
+ * Anthropic reports input_tokens without cached tokens; every other provider
+ * (OpenAI, Azure OpenAI, Gemini, Mistral, DeepSeek, Groq, xAI) counts cached
+ * tokens inside input_tokens.
+ */
+export function getUsageTotals(usage: SpanAiUsage): {
+	inputUsage: number;
+	totalUsage: number;
+} {
+	const input = usage.inputTokens ?? 0;
+	const inputUsage = usage.isAnthropic
+		? input + (usage.cacheReadTokens ?? 0) + (usage.cacheCreationTokens ?? 0)
+		: input;
+
+	return { inputUsage, totalUsage: inputUsage + (usage.outputTokens ?? 0) };
+}
+
+export function formatTokens(value: number): string {
+	return value.toLocaleString('en-US');
+}
+
+export function formatCost(value: number): string {
+	return `$ ${value.toLocaleString('en-US', { maximumFractionDigits: 10 })}`;
+}

frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/TraceDetailsHeader.module.scss

@@ -34,6 +34,15 @@
 	}
 }
 
+.tabs {
+	flex-shrink: 0;
+}
+
+.tab {
+	flex: unset;
+	padding: 0 24px;
+}
+
 .filterSection {
 	display: flex;
 	align-items: center;

frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/TraceDetailsHeader.tsx

@@ -1,4 +1,4 @@
-import { useCallback, useState } from 'react';
+import { useCallback, useEffect, useState } from 'react';
 import { useParams } from 'react-router-dom';
 import { Button } from '@signozhq/ui/button';
 import {
@@ -18,40 +18,26 @@ import KeyValueLabel from 'periscope/components/KeyValueLabel';
 import { TraceDetailV3URLProps } from 'types/api/trace/getTraceV3';
 import { DataSource } from 'types/common/queryBuilder';
 
+import { TraceDetailsTab } from '../constants';
 import { TraceDetailEventKeys, TraceDetailEvents } from '../events';
 import { useTraceDetailLogEvent } from '../hooks/useTraceDetailLogEvent';
+import { useTraceDetailsTab } from '../hooks/useTraceDetailsTab';
 import { useTraceStore } from '../stores/traceStore';
 import TraceDownloadPanel from './TraceDownloadPanel';
 import EntityMetadataRow from '../EntityMetadata/EntityMetadataRow';
 import AnalyticsPanel from '../SpanDetailsPanel/AnalyticsPanel/AnalyticsPanel';
 import Filters from '../TraceWaterfall/TraceWaterfallStates/Success/Filters/Filters';
+import { useTraceDetailsStripInfo } from '../useTraceDetailsStripInfo';
 import MissingSpansBanner from './MissingSpansBanner';
+import { useTraceSummary } from './useTraceSummary';
+import TraceDetailsTabs from './TraceDetailsTabs';
 import TraceOptionsMenu from './TraceOptionsMenu';
 
 import styles from './TraceDetailsHeader.module.scss';
 import { DATE_TIME_FORMATS } from 'constants/dateTimeFormats';
 
-interface FilterMetadata {
-	startTime: number;
-	endTime: number;
-	traceId: string;
-}
-
-export interface TraceMetadataForHeader {
-	startTimestampMillis: number;
-	endTimestampMillis: number;
-	rootServiceName: string;
-	rootServiceEntryPoint: string;
-	rootSpanStatusCode: string;
-	hasMissingSpans: boolean;
-	totalSpansCount: number;
-}
-
 interface TraceDetailsHeaderProps {
-	filterMetadata: FilterMetadata;
-	onFilteredSpansChange: (spanIds: string[], isFilterActive: boolean) => void;
-	isDataLoaded?: boolean;
-	traceMetadata?: TraceMetadataForHeader;
+	onFilteredSpansChange?: (spanIds: string[], isFilterActive: boolean) => void;
 }
 
 const SKELETON_COUNT = 3;
@@ -73,16 +59,22 @@ function DetailsLoader(): JSX.Element {
 }
 
 function TraceDetailsHeader({
-	filterMetadata,
 	onFilteredSpansChange,
-	isDataLoaded,
-	traceMetadata,
 }: TraceDetailsHeaderProps): JSX.Element {
 	const { id: traceID } = useParams<TraceDetailV3URLProps>();
+	const { data: summary, isLoading } = useTraceSummary();
 	const [showTraceDetails, setShowTraceDetails] = useState(true);
 	const [isFilterExpanded, setIsFilterExpanded] = useState(false);
 	const [isPreviewFieldsOpen, setIsPreviewFieldsOpen] = useState(false);
 	const [isAnalyticsOpen, setIsAnalyticsOpen] = useState(false);
+	const [tab] = useTraceDetailsTab();
+	const isOverview = tab === TraceDetailsTab.Overview;
+
+	// Overview-only panels must not linger over another tab.
+	useEffect(() => {
+		setIsPreviewFieldsOpen(false);
+		setIsAnalyticsOpen(false);
+	}, [tab]);
 	const previewFields = useTraceStore((s) => s.previewFields);
 	const setPreviewFields = useTraceStore((s) => s.setPreviewFields);
 
@@ -116,9 +108,13 @@ function TraceDetailsHeader({
 		setShowTraceDetails((prev) => !prev);
 	}, []);
 
-	const durationMs = traceMetadata
-		? traceMetadata.endTimestampMillis - traceMetadata.startTimestampMillis
-		: 0;
+	useTraceDetailsStripInfo({
+		totalSpansCount: summary?.totalSpansCount ?? 0,
+		totalErrorSpansCount: summary?.totalErrorSpansCount ?? 0,
+	});
+
+	const startTime = (summary?.startTimestampMillis ?? 0) / 1e3;
+	const endTime = (summary?.endTimestampMillis ?? 0) / 1e3;
 
 	return (
 		<div className={styles.wrapper}>
@@ -140,9 +136,10 @@ function TraceDetailsHeader({
 							badgeValue={traceID || ''}
 							maxCharacters={100}
 						/>
+						<TraceDetailsTabs />
 					</div>
 				)}
-				{isDataLoaded && (
+				{isOverview && onFilteredSpansChange && summary && (
 					<div
 						className={cx(
 							styles.filterSection,
@@ -171,9 +168,9 @@ function TraceDetailsHeader({
 										onToggleTraceDetails={handleToggleTraceDetails}
 										onOpenPreviewFields={(): void => setIsPreviewFieldsOpen(true)}
 										traceId={traceID || ''}
-										startTime={filterMetadata.startTime}
-										endTime={filterMetadata.endTime}
-										totalSpansCount={traceMetadata?.totalSpansCount || 0}
+										startTime={startTime}
+										endTime={endTime}
+										totalSpansCount={summary.totalSpansCount}
 									/>
 								</div>
 							</TooltipProvider>
@@ -183,9 +180,9 @@ function TraceDetailsHeader({
 							className={cx(styles.filter, isFilterExpanded && styles.isExpanded)}
 						>
 							<Filters
-								startTime={filterMetadata.startTime}
-								endTime={filterMetadata.endTime}
-								traceID={filterMetadata.traceId}
+								startTime={startTime}
+								endTime={endTime}
+								traceID={traceID || ''}
 								onFilteredSpansChange={onFilteredSpansChange}
 								isExpanded={isFilterExpanded}
 								onExpand={(): void => setIsFilterExpanded(true)}
@@ -196,28 +193,29 @@ function TraceDetailsHeader({
 				)}
 			</div>
 
-			{showTraceDetails && (
+			{(showTraceDetails || !isOverview) && (
 				<div className={styles.subHeader}>
-					{traceMetadata ? (
+					{isLoading || !summary ? (
+						<DetailsLoader />
+					) : (
 						<EntityMetadataRow
 							entity="trace"
 							service={{
-								name: traceMetadata.rootServiceName,
-								entryPoint: traceMetadata.rootServiceEntryPoint,
+								name: summary.rootServiceName,
+								entryPoint: summary.rootServiceEntryPoint,
 							}}
-							durationMs={durationMs}
-							timestamp={dayjs(traceMetadata.startTimestampMillis).format(
+							durationMs={summary.endTimestampMillis - summary.startTimestampMillis}
+							timestamp={dayjs(summary.startTimestampMillis).format(
 								DATE_TIME_FORMATS.DD_MMM_YYYY_HH_MM_SS,
 							)}
-							statusCode={traceMetadata.rootSpanStatusCode}
+							tokens={summary.ai?.tokens}
+							cost={summary.ai?.totalCost}
 						/>
-					) : (
-						<DetailsLoader />
 					)}
 				</div>
 			)}
 
-			{traceMetadata?.hasMissingSpans && <MissingSpansBanner />}
+			{isOverview && summary?.hasMissingSpans && <MissingSpansBanner />}
 
 			<FieldsSelector
 				isOpen={isPreviewFieldsOpen}

frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/TraceDetailsTabs.tsx

@@ -0,0 +1,44 @@
+import { ToggleGroup, ToggleGroupItem } from '@signozhq/ui/toggle-group';
+
+import { TraceDetailsTab } from '../constants';
+import { useTraceDetailsTab } from '../hooks/useTraceDetailsTab';
+
+import styles from './TraceDetailsHeader.module.scss';
+
+function TraceDetailsTabs(): JSX.Element {
+	const [tab, setTab] = useTraceDetailsTab();
+
+	const handleChange = (value: string): void => {
+		// Clicking the active item deselects it and reports ''.
+		if (value) {
+			void setTab(value as TraceDetailsTab);
+		}
+	};
+
+	return (
+		<ToggleGroup
+			type="single"
+			value={tab}
+			onChange={handleChange}
+			className={styles.tabs}
+			size="sm"
+		>
+			<ToggleGroupItem
+				value={TraceDetailsTab.Overview}
+				className={styles.tab}
+				data-testid="trace-details-tab-overview"
+			>
+				Overview
+			</ToggleGroupItem>
+			<ToggleGroupItem
+				value={TraceDetailsTab.Thread}
+				className={styles.tab}
+				data-testid="trace-details-tab-thread"
+			>
+				Thread
+			</ToggleGroupItem>
+		</ToggleGroup>
+	);
+}
+
+export default TraceDetailsTabs;

frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/__tests__/TraceDetailsHeader.test.tsx

@@ -1,9 +1,12 @@
 import { fireEvent, screen } from '@testing-library/react';
 import userEvent from '@testing-library/user-event';
 import { getYAxisFormattedValue } from 'components/Graph/yAxisConfig';
+import { NuqsTestingAdapter } from 'nuqs/adapters/testing';
 import ROUTES from 'constants/routes';
 import { render } from 'tests/test-utils';
 
+import { MOCK_TRACE_SUMMARY } from '../mockTraceSummary';
+import * as traceSummaryModule from '../useTraceSummary';
 import TraceDetailsHeader from '../TraceDetailsHeader';
 
 const mockGoBack = jest.fn();
@@ -50,15 +53,9 @@ jest.mock('components/FieldsSelector', () => ({
 	),
 }));
 
-const baseProps = {
-	filterMetadata: {
-		startTime: 0,
-		endTime: 1,
-		traceId: 'trace-123',
-	},
-	onFilteredSpansChange: jest.fn(),
-	isDataLoaded: false,
-};
+const baseProps = { onFilteredSpansChange: jest.fn() };
+
+const metadataText = /Missing Span/;
 
 describe('TraceDetailsHeader – back button', () => {
 	beforeEach(() => {
@@ -94,8 +91,8 @@ describe('TraceDetailsHeader – action cluster', () => {
 		mockReplace.mockClear();
 	});
 
-	it('does not render the action buttons while data is still loading', () => {
-		render(<TraceDetailsHeader {...baseProps} isDataLoaded={false} />);
+	it('does not render the action buttons without a filter handler', () => {
+		render(<TraceDetailsHeader />);
 
 		expect(
 			screen.queryByRole('button', { name: /^analytics$/i }),
@@ -105,8 +102,8 @@ describe('TraceDetailsHeader – action cluster', () => {
 		).not.toBeInTheDocument();
 	});
 
-	it('renders Analytics and Settings action buttons once data is loaded', () => {
-		render(<TraceDetailsHeader {...baseProps} isDataLoaded />);
+	it('renders Analytics and Settings action buttons', () => {
+		render(<TraceDetailsHeader {...baseProps} />);
 
 		expect(
 			screen.getByRole('button', { name: /^analytics$/i }),
@@ -117,7 +114,7 @@ describe('TraceDetailsHeader – action cluster', () => {
 	});
 
 	it('toggles the AnalyticsPanel open state when the Analytics button is clicked', () => {
-		render(<TraceDetailsHeader {...baseProps} isDataLoaded />);
+		render(<TraceDetailsHeader {...baseProps} />);
 
 		const panel = screen.getByTestId('analytics-panel');
 		expect(panel).toHaveAttribute('data-open', 'false');
@@ -133,68 +130,125 @@ describe('TraceDetailsHeader – action cluster', () => {
 });
 
 describe('TraceDetailsHeader – trace metadata row', () => {
-	// Plain prop, no API mock needed: traceMetadata is passed straight in.
-	const traceMetadata = {
-		startTimestampMillis: 1_700_000_000_000,
-		endTimestampMillis: 1_700_000_120_000, // +120000ms = 2 min
-		rootServiceName: 'inventory-frontend',
-		rootServiceEntryPoint: 'large-trace-root',
-		rootSpanStatusCode: '404',
-		hasMissingSpans: false,
-		totalSpansCount: 42,
-	};
+	afterEach(() => {
+		jest.restoreAllMocks();
+	});
 
-	it('renders the metadata (service, entry point, duration, status) when provided', () => {
-		render(
-			<TraceDetailsHeader
-				{...baseProps}
-				isDataLoaded
-				traceMetadata={traceMetadata}
-			/>,
-		);
+	it('shows skeletons instead of the metadata while the summary loads', () => {
+		jest
+			.spyOn(traceSummaryModule, 'useTraceSummary')
+			.mockReturnValue({ data: undefined, isLoading: true });
+		const { container } = render(<TraceDetailsHeader {...baseProps} />);
 
-		expect(screen.getByText(/inventory-frontend/)).toBeInTheDocument();
-		expect(screen.getByText('large-trace-root')).toBeInTheDocument();
-		expect(screen.getByText('404')).toBeInTheDocument();
-		// Duration goes through the shared formatter (e.g. "2 min").
+		expect(screen.queryByText(metadataText)).not.toBeInTheDocument();
+		expect(container.querySelectorAll('.ant-skeleton-input')).toHaveLength(3);
+	});
+
+	it('renders the summary metadata with tokens and cost', () => {
+		render(<TraceDetailsHeader {...baseProps} />);
+
+		const { startTimestampMillis, endTimestampMillis } = MOCK_TRACE_SUMMARY;
 		const duration = getYAxisFormattedValue(
-			`${traceMetadata.endTimestampMillis - traceMetadata.startTimestampMillis}`,
+			`${endTimestampMillis - startTimestampMillis}`,
 			'ms',
 		);
+
+		expect(screen.getByText(metadataText)).toBeInTheDocument();
 		expect(screen.getByText(duration)).toBeInTheDocument();
+		expect(screen.getByText('Tokens: 12,040 → 3,110')).toBeInTheDocument();
+		expect(screen.getByText('$ 0.0421')).toBeInTheDocument();
 	});
 
 	it('is shown by default and can be hidden / shown again via the Trace options menu', async () => {
 		const user = userEvent.setup({ delay: null });
-		render(
-			<TraceDetailsHeader
-				{...baseProps}
-				isDataLoaded
-				traceMetadata={traceMetadata}
-			/>,
-		);
+		render(<TraceDetailsHeader {...baseProps} />);
 
-		// Visible by default (showTraceDetails defaults to true).
-		expect(screen.getByText(/inventory-frontend/)).toBeInTheDocument();
+		expect(screen.getByText(metadataText)).toBeInTheDocument();
 
-		// Hide it.
 		await user.click(screen.getByRole('button', { name: /trace options/i }));
 		await user.click(
 			await screen.findByRole('menuitem', { name: /hide trace details/i }),
 		);
-		expect(screen.queryByText(/inventory-frontend/)).not.toBeInTheDocument();
+		expect(screen.queryByText(metadataText)).not.toBeInTheDocument();
 
-		// Show it again.
 		await user.click(screen.getByRole('button', { name: /trace options/i }));
 		await user.click(
 			await screen.findByRole('menuitem', { name: /show trace details/i }),
 		);
-		expect(screen.getByText(/inventory-frontend/)).toBeInTheDocument();
-	});
-
-	it('does not render the metadata row when traceMetadata is absent', () => {
-		render(<TraceDetailsHeader {...baseProps} isDataLoaded />);
-
-		expect(screen.queryByText(/inventory-frontend/)).not.toBeInTheDocument();
+		expect(screen.getByText(metadataText)).toBeInTheDocument();
+	});
+});
+
+describe('TraceDetailsHeader – tabs', () => {
+	// In-memory URL state, so a tab switch can't leak into the next test.
+	const renderHeader = (): void => {
+		render(
+			<NuqsTestingAdapter hasMemory>
+				<TraceDetailsHeader {...baseProps} />
+			</NuqsTestingAdapter>,
+		);
+	};
+
+	it('shows the Overview-only sections on the Overview tab', () => {
+		renderHeader();
+
+		expect(screen.getByTestId('filters-stub')).toBeInTheDocument();
+		expect(
+			screen.getByRole('button', { name: /^analytics$/i }),
+		).toBeInTheDocument();
+		expect(
+			screen.getByRole('button', { name: /trace options/i }),
+		).toBeInTheDocument();
+		expect(screen.getByTestId('missing-spans-banner')).toBeInTheDocument();
+	});
+
+	it('keeps only the metadata row on the Thread tab', async () => {
+		const user = userEvent.setup({ delay: null });
+		renderHeader();
+
+		await user.click(screen.getByTestId('trace-details-tab-thread'));
+
+		expect(screen.queryByTestId('filters-stub')).not.toBeInTheDocument();
+		expect(
+			screen.queryByRole('button', { name: /^analytics$/i }),
+		).not.toBeInTheDocument();
+		expect(
+			screen.queryByRole('button', { name: /trace options/i }),
+		).not.toBeInTheDocument();
+		expect(screen.queryByTestId('missing-spans-banner')).not.toBeInTheDocument();
+		expect(screen.getByText(metadataText)).toBeInTheDocument();
+	});
+
+	it('shows the metadata row on the Thread tab even when hidden on Overview', async () => {
+		const user = userEvent.setup({ delay: null });
+		renderHeader();
+
+		await user.click(screen.getByRole('button', { name: /trace options/i }));
+		await user.click(
+			await screen.findByRole('menuitem', { name: /hide trace details/i }),
+		);
+		expect(screen.queryByText(metadataText)).not.toBeInTheDocument();
+
+		await user.click(screen.getByTestId('trace-details-tab-thread'));
+
+		expect(screen.getByText(metadataText)).toBeInTheDocument();
+	});
+
+	it('closes the Analytics panel when switching to the Thread tab', async () => {
+		const user = userEvent.setup({ delay: null });
+		renderHeader();
+
+		await user.click(screen.getByRole('button', { name: /^analytics$/i }));
+		expect(screen.getByTestId('analytics-panel')).toHaveAttribute(
+			'data-open',
+			'true',
+		);
+
+		await user.click(screen.getByTestId('trace-details-tab-thread'));
+
+		expect(screen.getByTestId('analytics-panel')).toHaveAttribute(
+			'data-open',
+			'false',
+		);
 	});
 });

frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/mockTraceSummary.ts

@@ -0,0 +1,22 @@
+import { TraceSummary } from './types';
+
+// Placeholder until GET /api/v1/traces/{id}/summary feeds the header.
+export const MOCK_TRACE_SUMMARY: TraceSummary = {
+	startTimestampMillis: 1789627365929,
+	endTimestampMillis: 1789627367867,
+	rootServiceName: '',
+	rootServiceEntryPoint: 'Missing Span',
+	totalSpansCount: 3,
+	totalErrorSpansCount: 0,
+	hasMissingSpans: true,
+	ai: {
+		tokens: {
+			input: 12040,
+			output: 3110,
+			cacheRead: 8000,
+			cacheWrite: 1200,
+			reasoning: 900,
+		},
+		totalCost: 0.0421,
+	},
+};

frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/types.ts

@@ -0,0 +1,23 @@
+export interface TraceTokenUsage {
+	input: number;
+	output: number;
+	cacheRead?: number;
+	cacheWrite?: number;
+	reasoning?: number;
+}
+
+/** Response of GET /api/v1/traces/{id}/summary. */
+export interface TraceSummary {
+	startTimestampMillis: number;
+	endTimestampMillis: number;
+	rootServiceName: string;
+	rootServiceEntryPoint: string;
+	totalSpansCount: number;
+	totalErrorSpansCount: number;
+	hasMissingSpans: boolean;
+	ai?: {
+		tokens?: TraceTokenUsage;
+		// null when no span has a cost attribute
+		totalCost: number | null;
+	};
+}

frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/useTraceSummary.ts

@@ -0,0 +1,12 @@
+import { MOCK_TRACE_SUMMARY } from './mockTraceSummary';
+import { TraceSummary } from './types';
+
+interface UseTraceSummaryResult {
+	data: TraceSummary | undefined;
+	isLoading: boolean;
+}
+
+// Placeholder until GET /api/v1/traces/{id}/summary is available.
+export function useTraceSummary(): UseTraceSummaryResult {
+	return { data: MOCK_TRACE_SUMMARY, isLoading: false };
+}

frontend/src/pages/TraceDetailsV3/TraceDetailsOverview/TraceDetailsOverview.module.scss

@@ -1,10 +1,3 @@
-.root {
-	flex: 1;
-	min-height: 0;
-	display: flex;
-	flex-direction: column;
-}
-
 .layoutRow {
 	display: flex;
 	flex: 1;

frontend/src/pages/TraceDetailsV3/TraceDetailsOverview/TraceDetailsOverview.tsx

@@ -0,0 +1,500 @@
+/* eslint-disable sonarjs/cognitive-complexity */
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+import { useParams } from 'react-router-dom';
+import {
+	ChartNoAxesGantt,
+	ChevronDown,
+	ChevronRight,
+	Info,
+	TriangleAlert,
+} from '@signozhq/icons';
+import getLocalStorageKey from 'api/browser/localstorage/get';
+import setLocalStorageKey from 'api/browser/localstorage/set';
+import { Collapse } from 'antd';
+import { useDetailsPanel } from 'components/DetailsPanel';
+import WarningPopover from 'components/WarningPopover/WarningPopover';
+import { LOCALSTORAGE } from 'constants/localStorage';
+import useGetTraceV4 from 'hooks/trace/useGetTraceV4';
+import { useSafeNavigate } from 'hooks/useSafeNavigate';
+import useUrlQuery from 'hooks/useUrlQuery';
+import { ResizableBox } from 'periscope/components/ResizableBox';
+import { SpanV3, TraceDetailV3URLProps } from 'types/api/trace/getTraceV3';
+
+import { TraceDetailEventKeys, TraceDetailEvents } from '../events';
+import { useTraceDetailLogEvent } from '../hooks/useTraceDetailLogEvent';
+import NoData from '../NoData/NoData';
+import {
+	setTraceStoreAvailableColorByFields,
+	useTraceStore,
+} from '../stores/traceStore';
+import { SpanDetailVariant } from '../SpanDetailsPanel/constants';
+import SpanDetailsPanel from '../SpanDetailsPanel/SpanDetailsPanel';
+import { FLAMEGRAPH_SPAN_LIMIT } from '../TraceFlamegraph/constants';
+import TraceFlamegraph from '../TraceFlamegraph/TraceFlamegraph';
+import TraceWaterfall from '../TraceWaterfall/TraceWaterfall';
+import { IInterestedSpan } from '../TraceWaterfall/types';
+import { getAncestorSpanIds } from '../TraceWaterfall/utils';
+import { getAvailableColorByFieldNames } from '../utils';
+
+import cx from 'classnames';
+
+import styles from './TraceDetailsOverview.module.scss';
+
+// Lucide chevrons for the flame/waterfall accordion headers, matching the
+// span-tree chevrons in the waterfall.
+function renderPanelExpandIcon({
+	isActive,
+}: {
+	isActive?: boolean;
+}): JSX.Element {
+	return isActive ? <ChevronDown size={14} /> : <ChevronRight size={14} />;
+}
+
+interface TraceDetailsOverviewProps {
+	filteredSpanIds: string[];
+	isFilterActive: boolean;
+}
+
+function TraceDetailsOverview({
+	filteredSpanIds,
+	isFilterActive,
+}: TraceDetailsOverviewProps): JSX.Element {
+	const { id: traceId } = useParams<TraceDetailV3URLProps>();
+	const urlQuery = useUrlQuery();
+	const [interestedSpanId, setInterestedSpanId] = useState<IInterestedSpan>(
+		() => ({
+			spanId: urlQuery.get('spanId') || '',
+			isUncollapsed: urlQuery.get('spanId') !== '',
+		}),
+	);
+	const [uncollapsedNodes, setUncollapsedNodes] = useState<string[]>([]);
+	const [localUncollapsedNodes, setLocalUncollapsedNodes] = useState<
+		Set<string>
+	>(new Set());
+	const [selectedSpan, setSelectedSpan] = useState<SpanV3>();
+
+	const selectedSpanId = urlQuery.get('spanId') || undefined;
+	const { safeNavigate } = useSafeNavigate();
+
+	const logTraceEvent = useTraceDetailLogEvent('v3', traceId || '');
+	// Tracks which traceId the load event already fired for, so navigating
+	// between traces (the route component stays mounted) re-fires it once each.
+	const dataLoadedFiredForRef = useRef('');
+	const colorByField = useTraceStore((s) => s.colorByField);
+	const previewFieldsCount = useTraceStore((s) => s.previewFields.length);
+	const userPrefsReady = useTraceStore((s) => s.userPreferences !== null);
+
+	const handleSpanDetailsClose = useCallback((): void => {
+		urlQuery.delete('spanId');
+		safeNavigate({ search: urlQuery.toString() }, { replace: true });
+	}, [urlQuery, safeNavigate]);
+
+	const panelState = useDetailsPanel({
+		entityId: selectedSpanId,
+		onClose: handleSpanDetailsClose,
+	});
+
+	const allSpansRef = useRef<SpanV3[]>([]);
+	const deepLinkResolvedRef = useRef(false);
+
+	// Refetch only when the URL target isn't already loaded. Keeps row clicks
+	// and other in-window URL navigation from triggering a backend window slide.
+	useEffect(() => {
+		const spanId = urlQuery.get('spanId') || '';
+		if (!spanId) {
+			return;
+		}
+		const idx = allSpansRef.current.findIndex((s) => s.span_id === spanId);
+		if (idx !== -1) {
+			setSelectedSpan(allSpansRef.current[idx]);
+			return;
+		}
+		setInterestedSpanId({ spanId, isUncollapsed: true });
+	}, [urlQuery]);
+
+	// Once all spans are loaded (frontend mode), freeze query params so
+	// subsequent interestedSpanId changes don't trigger unnecessary refetches.
+	const fullDataLoadedRef = useRef(false);
+	const frozenParamsRef = useRef({
+		selectedSpanId: interestedSpanId.spanId,
+		isSelectedSpanIDUnCollapsed: interestedSpanId.isUncollapsed,
+		uncollapsedSpans: uncollapsedNodes,
+	});
+
+	const queryParams = fullDataLoadedRef.current
+		? frozenParamsRef.current
+		: {
+				selectedSpanId: interestedSpanId.spanId,
+				isSelectedSpanIDUnCollapsed: interestedSpanId.isUncollapsed,
+				uncollapsedSpans: uncollapsedNodes,
+			};
+
+	const {
+		data: traceData,
+		isFetching: isFetchingTraceData,
+		error: errorFetchingTraceData,
+	} = useGetTraceV4({
+		traceId,
+		uncollapsedSpans: queryParams.uncollapsedSpans,
+		selectedSpanId: queryParams.selectedSpanId,
+		isSelectedSpanIDUnCollapsed: queryParams.isSelectedSpanIDUnCollapsed,
+	});
+
+	const allSpans = traceData?.payload?.spans || [];
+	const totalSpansCount = traceData?.payload?.totalSpansCount || 0;
+
+	const isFullDataLoaded =
+		totalSpansCount > 0 && totalSpansCount <= allSpans.length;
+
+	// Color-by options, gated on fields in loaded spans. Resource attrs are
+	// trace-wide, so any window has the full set — no need to accumulate.
+	const availableColorByFields = useMemo(() => {
+		const spans = traceData?.payload?.spans;
+		return spans?.length ? getAvailableColorByFieldNames(spans) : undefined;
+	}, [traceData?.payload?.spans]);
+
+	useEffect(() => {
+		setTraceStoreAvailableColorByFields(availableColorByFields);
+	}, [availableColorByFields]);
+
+	// Lock the ref once we confirm all data is loaded
+	if (isFullDataLoaded && !fullDataLoadedRef.current) {
+		fullDataLoadedRef.current = true;
+		frozenParamsRef.current = {
+			selectedSpanId: interestedSpanId.spanId,
+			isSelectedSpanIDUnCollapsed: interestedSpanId.isUncollapsed,
+			uncollapsedSpans: uncollapsedNodes,
+		};
+	}
+
+	useEffect(() => {
+		allSpansRef.current = allSpans;
+	}, [allSpans]);
+
+	useEffect(() => {
+		if (
+			!traceId ||
+			dataLoadedFiredForRef.current === traceId ||
+			!userPrefsReady
+		) {
+			return;
+		}
+		const payload = traceData?.payload;
+		if (!payload?.spans?.length) {
+			return;
+		}
+		dataLoadedFiredForRef.current = traceId;
+		const numServices = new Set(payload.spans.map((s) => s['service.name'])).size;
+		logTraceEvent(TraceDetailEvents.DataLoaded, {
+			[TraceDetailEventKeys.TotalSpansCount]: totalSpansCount,
+			[TraceDetailEventKeys.NumServices]: numServices,
+			[TraceDetailEventKeys.TraceDurationMs]:
+				payload.endTimestampMillis - payload.startTimestampMillis,
+			[TraceDetailEventKeys.HadErrors]: (payload.totalErrorSpansCount || 0) > 0,
+			[TraceDetailEventKeys.FlamegraphSampled]:
+				totalSpansCount > FLAMEGRAPH_SPAN_LIMIT,
+			[TraceDetailEventKeys.SpanPanelVariant]:
+				getLocalStorageKey(LOCALSTORAGE.TRACE_DETAILS_SPAN_DETAILS_POSITION) ||
+				SpanDetailVariant.DOCKED_RIGHT,
+			[TraceDetailEventKeys.ColorByField]: colorByField.name,
+			[TraceDetailEventKeys.PreviewFieldsCount]: previewFieldsCount,
+		});
+	}, [
+		traceId,
+		userPrefsReady,
+		traceData,
+		totalSpansCount,
+		colorByField,
+		previewFieldsCount,
+		logTraceEvent,
+	]);
+
+	// Frontend mode: expand all parents by default when full data arrives
+	useEffect(() => {
+		if (isFullDataLoaded && allSpans.length > 0) {
+			const parentIds = new Set(
+				allSpans.filter((s) => s.has_children).map((s) => s.span_id),
+			);
+			setLocalUncollapsedNodes(parentIds);
+		}
+	}, [isFullDataLoaded, allSpans]);
+
+	// Backend mode: sync uncollapsed state from API response
+	useEffect(() => {
+		if (
+			!isFullDataLoaded &&
+			traceData &&
+			traceData.payload &&
+			traceData.payload.uncollapsedSpans
+		) {
+			setUncollapsedNodes(traceData.payload.uncollapsedSpans);
+		}
+	}, [traceData, isFullDataLoaded]);
+
+	// Tracks whether we've already done the initial URL→selectedSpan handoff
+	//Lets `interestedSpanId` stay purely as the refetch trigger in frontend mode.
+	useEffect(() => {
+		if (deepLinkResolvedRef.current) {
+			return;
+		}
+		if (allSpans.length === 0) {
+			return;
+		}
+		if (selectedSpanId) {
+			const span = allSpans.find((s) => s.span_id === selectedSpanId);
+			if (!span) {
+				// Span not in the current window — wait for more data (backend
+				// pagination) before marking resolved.
+				return;
+			}
+			setSelectedSpan(span);
+		} else {
+			setSelectedSpan((prev) => prev ?? allSpans[0]);
+		}
+		deepLinkResolvedRef.current = true;
+	}, [selectedSpanId, allSpans]);
+
+	// Frontend mode: auto-expand ancestors of the URL-targeted span so it's
+	// visible. Keyed on URL `spanId`(selectedSpanId).
+	useEffect(() => {
+		if (!isFullDataLoaded || !selectedSpanId || allSpans.length === 0) {
+			return;
+		}
+		const ancestors = getAncestorSpanIds(allSpans, selectedSpanId);
+		if (ancestors.size === 0) {
+			return;
+		}
+		setLocalUncollapsedNodes((prev) => {
+			// Check if all ancestors are already expanded — avoid unnecessary state update
+			let allPresent = true;
+			for (const id of ancestors) {
+				if (!prev.has(id)) {
+					allPresent = false;
+					break;
+				}
+			}
+			if (allPresent) {
+				return prev;
+			}
+
+			const next = new Set(prev);
+			for (const id of ancestors) {
+				next.add(id);
+			}
+			return next;
+		});
+	}, [isFullDataLoaded, selectedSpanId, allSpans]);
+
+	const [activeKeys, setActiveKeys] = useState<string[]>(['flame', 'waterfall']);
+
+	const handleCollapseChange = (key: string): void => {
+		logTraceEvent(
+			key === 'flame'
+				? TraceDetailEvents.FlameGraphToggled
+				: TraceDetailEvents.WaterfallToggled,
+			{ [TraceDetailEventKeys.Expanded]: !activeKeys.includes(key) },
+		);
+		setActiveKeys((prev) =>
+			prev.includes(key) ? prev.filter((k) => k !== key) : [...prev, key],
+		);
+	};
+
+	const [spanDetailVariant, setSpanDetailVariant] = useState<SpanDetailVariant>(
+		() =>
+			(getLocalStorageKey(
+				LOCALSTORAGE.TRACE_DETAILS_SPAN_DETAILS_POSITION,
+			) as SpanDetailVariant) || SpanDetailVariant.DOCKED_RIGHT,
+	);
+
+	const RIGHT_DOCK_MIN = 480;
+	const RIGHT_DOCK_MAX = 720;
+	const [rightDockWidth, setRightDockWidth] = useState(RIGHT_DOCK_MIN);
+
+	const handleVariantChange = useCallback(
+		(newVariant: SpanDetailVariant): void => {
+			setLocalStorageKey(
+				LOCALSTORAGE.TRACE_DETAILS_SPAN_DETAILS_POSITION,
+				newVariant,
+			);
+			setSpanDetailVariant(newVariant);
+		},
+		[],
+	);
+
+	const showNoData =
+		!isFetchingTraceData &&
+		(!!errorFetchingTraceData || !traceData?.payload?.spans?.length);
+
+	const isDocked = spanDetailVariant === SpanDetailVariant.DOCKED;
+	const isRightDocked = spanDetailVariant === SpanDetailVariant.DOCKED_RIGHT;
+	const isWaterfallDocked = panelState.isOpen && isDocked;
+	const showRightDock = panelState.isOpen && isRightDocked;
+
+	const waterfallChildren = (
+		<ResizableBox
+			defaultHeight={300}
+			minHeight={150}
+			disabled={!isWaterfallDocked}
+		>
+			<TraceWaterfall
+				traceData={traceData}
+				isFetchingTraceData={isFetchingTraceData}
+				errorFetchingTraceData={errorFetchingTraceData}
+				traceId={traceId || ''}
+				interestedSpanId={interestedSpanId}
+				setInterestedSpanId={setInterestedSpanId}
+				uncollapsedNodes={uncollapsedNodes}
+				isFullDataLoaded={isFullDataLoaded}
+				localUncollapsedNodes={localUncollapsedNodes}
+				setLocalUncollapsedNodes={setLocalUncollapsedNodes}
+				selectedSpan={selectedSpan}
+				setSelectedSpan={setSelectedSpan}
+				filteredSpanIds={filteredSpanIds}
+				isFilterActive={isFilterActive}
+			/>
+		</ResizableBox>
+	);
+
+	return (
+		<>
+			{showNoData ? (
+				<NoData />
+			) : (
+				<>
+					<div className={styles.layoutRow}>
+						<div className={styles.content}>
+							<Collapse
+								// @ts-expect-error motion is passed through to rc-collapse to disable animation
+								motion={false}
+								activeKey={activeKeys.filter((k) => k === 'flame')}
+								onChange={(): void => handleCollapseChange('flame')}
+								size="small"
+								expandIcon={renderPanelExpandIcon}
+								className={styles.flameCollapse}
+								items={[
+									{
+										key: 'flame',
+										label: (
+											<div className={styles.collapseLabel}>
+												<span className={styles.collapseTitle}>
+													Flame Graph
+													{traceData?.payload?.totalSpansCount &&
+														traceData.payload.totalSpansCount > FLAMEGRAPH_SPAN_LIMIT && (
+															<WarningPopover
+																message="The total span count exceeds the visualization limit. Displaying a sampled subset of spans in flamegraph."
+																placement="bottomLeft"
+															>
+																<Info
+																	size={16}
+																	color="var(--l2-foreground)"
+																	style={{ cursor: 'pointer' }}
+																/>
+															</WarningPopover>
+														)}
+												</span>
+												{traceData?.payload?.totalSpansCount ? (
+													<span className={styles.collapseCount}>
+														<span className={styles.collapseCountItem}>
+															<ChartNoAxesGantt size={13} />
+															Spans: {traceData.payload.totalSpansCount}
+														</span>
+														<span
+															className={cx(styles.collapseCountItem, {
+																[styles.hasErrors]: traceData.payload.totalErrorSpansCount > 0,
+															})}
+														>
+															<TriangleAlert size={13} />
+															Errors:{' '}
+															{traceData.payload.totalErrorSpansCount ?? (
+																<span className="translate-safe">{0}</span>
+															)}
+														</span>
+													</span>
+												) : null}
+											</div>
+										),
+										children: (
+											<ResizableBox defaultHeight={300} minHeight={100} maxHeight={400}>
+												<TraceFlamegraph
+													filteredSpanIds={filteredSpanIds}
+													isFilterActive={isFilterActive}
+													selectedSpan={selectedSpan}
+													totalSpansCount={totalSpansCount}
+												/>
+											</ResizableBox>
+										),
+									},
+								]}
+							/>
+
+							<Collapse
+								// @ts-expect-error motion is passed through to rc-collapse to disable animation
+								motion={false}
+								activeKey={activeKeys.filter((k) => k === 'waterfall')}
+								onChange={(): void => handleCollapseChange('waterfall')}
+								size="small"
+								expandIcon={renderPanelExpandIcon}
+								className={cx(styles.waterfallCollapse, {
+									[styles.isDocked]: isWaterfallDocked,
+								})}
+								items={[
+									{
+										key: 'waterfall',
+										label: 'Waterfall',
+										children: activeKeys.includes('waterfall') ? waterfallChildren : null,
+									},
+								]}
+							/>
+
+							{panelState.isOpen && isDocked && (
+								<div className={styles.dockedSpanDetails}>
+									<SpanDetailsPanel
+										panelState={panelState}
+										selectedSpan={selectedSpan}
+										variant={SpanDetailVariant.DOCKED}
+										onVariantChange={handleVariantChange}
+										traceStartTime={traceData?.payload?.startTimestampMillis}
+										traceEndTime={traceData?.payload?.endTimestampMillis}
+									/>
+								</div>
+							)}
+						</div>
+
+						{showRightDock && (
+							<ResizableBox
+								handle="left"
+								defaultWidth={rightDockWidth}
+								minWidth={RIGHT_DOCK_MIN}
+								maxWidth={RIGHT_DOCK_MAX}
+								onResize={setRightDockWidth}
+								className={styles.rightDock}
+							>
+								<SpanDetailsPanel
+									panelState={panelState}
+									selectedSpan={selectedSpan}
+									variant={SpanDetailVariant.DOCKED_RIGHT}
+									onVariantChange={handleVariantChange}
+									traceStartTime={traceData?.payload?.startTimestampMillis}
+									traceEndTime={traceData?.payload?.endTimestampMillis}
+								/>
+							</ResizableBox>
+						)}
+					</div>
+
+					{panelState.isOpen && spanDetailVariant === SpanDetailVariant.DIALOG && (
+						<SpanDetailsPanel
+							panelState={panelState}
+							selectedSpan={selectedSpan}
+							variant={SpanDetailVariant.DIALOG}
+							onVariantChange={handleVariantChange}
+							traceStartTime={traceData?.payload?.startTimestampMillis}
+							traceEndTime={traceData?.payload?.endTimestampMillis}
+						/>
+					)}
+				</>
+			)}
+		</>
+	);
+}
+
+export default TraceDetailsOverview;

frontend/src/pages/TraceDetailsV3/TraceDetailsThread/TraceDetailsThread.tsx

@@ -0,0 +1,5 @@
+function TraceDetailsThread(): JSX.Element {
+	return <div data-testid="trace-details-thread" />;
+}
+
+export default TraceDetailsThread;

frontend/src/pages/TraceDetailsV3/TraceDetailsWrapper/TraceDetailsWrapper.module.scss

@@ -0,0 +1,6 @@
+.root {
+	flex: 1;
+	min-height: 0;
+	display: flex;
+	flex-direction: column;
+}

frontend/src/pages/TraceDetailsV3/TraceDetailsWrapper/TraceDetailsWrapper.tsx

@@ -0,0 +1,21 @@
+import { ReactNode } from 'react';
+
+import TraceStoreSync from '../stores/TraceStoreSync';
+
+import styles from './TraceDetailsWrapper.module.scss';
+
+interface TraceDetailsWrapperProps {
+	children: ReactNode;
+}
+
+function TraceDetailsWrapper({
+	children,
+}: TraceDetailsWrapperProps): JSX.Element {
+	return (
+		<TraceStoreSync>
+			<div className={styles.root}>{children}</div>
+		</TraceStoreSync>
+	);
+}
+
+export default TraceDetailsWrapper;

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/FlamegraphCanvas.module.scss

@@ -33,10 +33,5 @@
 	position: fixed;
 	z-index: 1000;
 	pointer-events: none;
-	background-color: var(--l1-background);
-	padding: 8px 12px;
-	border-radius: 4px;
-	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
-	border: 1px solid var(--l2-border);
 	color: var(--l1-foreground);
 }

frontend/src/pages/TraceDetailsV3/TraceFlamegraph/FlamegraphCanvas.tsx

@@ -1,5 +1,6 @@
 import React, { useCallback, useEffect, useRef, useState } from 'react';
 import { createPortal } from 'react-dom';
+import cx from 'classnames';
 import TimelineV3 from 'components/TimelineV3/TimelineV3';
 import { useIsDarkMode } from 'hooks/useDarkMode';
 
@@ -17,6 +18,7 @@ import { useFlamegraphZoom } from './hooks/useFlamegraphZoom';
 import { useScrollToSpan } from './hooks/useScrollToSpan';
 import { EventRect, FlamegraphCanvasProps, SpanRect } from './types';
 
+import tooltipStyles from '../TraceTooltip/TraceTooltip.module.scss';
 import styles from './FlamegraphCanvas.module.scss';
 
 function FlamegraphCanvas(props: FlamegraphCanvasProps): JSX.Element {
@@ -203,7 +205,7 @@ function FlamegraphCanvas(props: FlamegraphCanvasProps): JSX.Element {
 	const tooltipElement = tooltipContent
 		? createPortal(
 				<div
-					className={styles.tooltip}
+					className={cx(tooltipStyles.surface, styles.tooltip)}
 					style={{
 						left: Math.min(tooltipContent.clientX + 15, window.innerWidth - 220),
 						top: Math.min(tooltipContent.clientY + 15, window.innerHeight - 100),

frontend/src/pages/TraceDetailsV3/TraceTooltip/TooltipRow.tsx

@@ -0,0 +1,34 @@
+import { Typography } from '@signozhq/ui/typography';
+
+import styles from './TraceTooltip.module.scss';
+
+interface TooltipRowProps {
+	label: string;
+	value: string;
+	isTotal?: boolean;
+	testId?: string;
+}
+
+function TooltipRow({
+	label,
+	value,
+	isTotal,
+	testId,
+}: TooltipRowProps): JSX.Element {
+	return (
+		<div className={styles.row} data-testid={testId}>
+			<Typography.Text
+				size="small"
+				color={isTotal ? undefined : 'muted'}
+				truncate={1}
+			>
+				{label}
+			</Typography.Text>
+			<Typography.Text size="small" truncate={1} className={styles.rowValue}>
+				{value}
+			</Typography.Text>
+		</div>
+	);
+}
+
+export default TooltipRow;

frontend/src/pages/TraceDetailsV3/TraceTooltip/TooltipSection.tsx

@@ -0,0 +1,13 @@
+import { ReactNode } from 'react';
+
+import styles from './TraceTooltip.module.scss';
+
+interface TooltipSectionProps {
+	children: ReactNode;
+}
+
+function TooltipSection({ children }: TooltipSectionProps): JSX.Element {
+	return <div className={styles.section}>{children}</div>;
+}
+
+export default TooltipSection;

frontend/src/pages/TraceDetailsV3/TraceTooltip/TraceTooltip.module.scss

@@ -0,0 +1,82 @@
+// Figma `dark/shadow-dropdown` popover surface, shared by every trace-details
+// tooltip so they look the same.
+$surface-background: color-mix(in srgb, var(--l3-background) 60%, transparent);
+$surface-border-color: var(--l2-border);
+$surface-radius: var(--radius-2);
+$surface-padding: var(--spacing-4);
+$surface-shadow: 4px 10px 16px 2px rgba(0, 0, 0, 0.2);
+
+// For plain elements, e.g. the flamegraph's cursor-following portal.
+.surface {
+	background-color: $surface-background;
+	border: 1px solid $surface-border-color;
+	border-radius: $surface-radius;
+	padding: $surface-padding;
+	box-shadow: $surface-shadow;
+	backdrop-filter: blur(20px);
+}
+
+// For @signozhq/ui Tooltip content: it paints both the bubble and the arrow
+// from these variables.
+.tooltipContent {
+	--tooltip-background: #{$surface-background};
+	--tooltip-border-color: #{$surface-border-color};
+	--tooltip-border-radius: #{$surface-radius};
+	--tooltip-padding: #{$surface-padding};
+	--tooltip-box-shadow: #{$surface-shadow};
+	backdrop-filter: blur(20px);
+}
+
+.body {
+	display: flex;
+	flex-direction: column;
+	letter-spacing: var(--paragraph-small-400-letter-spacing);
+	color: var(--l1-foreground-hover);
+}
+
+.title {
+	--typography-font-family: var(--code-small-500-font-family);
+	--typography-font-size: var(--code-small-500-font-size);
+	--typography-font-weight: var(--code-small-500-font-weight);
+	--typography-line-height: var(--code-small-500-line-height);
+	letter-spacing: var(--code-small-500-letter-spacing);
+	word-break: break-all;
+}
+
+.section {
+	display: flex;
+	flex-direction: column;
+	gap: 4px;
+	padding: 8px 0;
+	border-top: 1px solid;
+	border-image: linear-gradient(
+			90deg,
+			var(--l3-background-transparent),
+			var(--l3-border),
+			var(--l3-background-transparent)
+		)
+		1;
+
+	&:first-child {
+		padding-top: 0;
+		border-top: none;
+	}
+
+	&:last-child {
+		padding-bottom: 0;
+	}
+}
+
+.row {
+	display: flex;
+	justify-content: space-between;
+	gap: 16px;
+	min-width: 0;
+}
+
+.rowValue {
+	flex-shrink: 0;
+	max-width: 60%;
+	text-align: right;
+	font-variant-numeric: tabular-nums;
+}

frontend/src/pages/TraceDetailsV3/TraceWaterfall/TraceWaterfallStates/Success/Success.module.scss

@@ -217,8 +217,9 @@
 .statusCell {
 	display: flex;
 	align-items: center;
-	justify-content: center;
+	justify-content: flex-start;
 	cursor: pointer;
+	padding-left: var(--spacing-2);
 
 	--badge-border-radius: 2px;
 	--badge-padding: 3px 6px;
@@ -408,6 +409,11 @@
 	}
 }
 
+.aiSpanIcon {
+	flex-shrink: 0;
+	margin: 0 4px;
+}
+
 .treeLabel {
 	color: var(--l1-foreground);
 	font-family: 'Inter';

frontend/src/pages/TraceDetailsV3/TraceWaterfall/TraceWaterfallStates/Success/Success.tsx

@@ -25,7 +25,6 @@ import {
 } from '@tanstack/react-table';
 import { useVirtualizer, Virtualizer } from '@tanstack/react-virtual';
 import cx from 'classnames';
-import HttpStatusBadge from 'components/HttpStatusBadge/HttpStatusBadge';
 import TimelineV3 from 'components/TimelineV3/TimelineV3';
 import { convertTimeToRelevantUnit } from 'utils/traceUtils';
 import { useCopySpanLink } from 'hooks/trace/useCopySpanLink';
@@ -33,7 +32,13 @@ import { useIsDarkMode } from 'hooks/useDarkMode';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
 import useUrlQuery from 'hooks/useUrlQuery';
 import { colorToRgb } from 'lib/uPlotLib/utils/generateColor';
-import { ChevronDown, ChevronRight, Link, ListPlus } from '@signozhq/icons';
+import {
+	ChevronDown,
+	ChevronRight,
+	Link,
+	ListPlus,
+	Sparkle,
+} from '@signozhq/icons';
 import { useTraceStore } from 'pages/TraceDetailsV3/stores/traceStore';
 import { resolveSpanColor } from 'pages/TraceDetailsV3/utils';
 import { useBoundaryPagination } from 'pages/TraceDetailsV3/TraceWaterfall/hooks/useBoundaryPagination';
@@ -44,6 +49,8 @@ import { toFixed } from 'utils/toFixed';
 
 import { EventTooltipContent } from '../../../SpanHoverCard/EventTooltipContent';
 import { SpanHoverCard } from '../../../SpanHoverCard/SpanHoverCard';
+import SpanHintBadge from '../../../SpanHintBadge/SpanHintBadge';
+import { isAiSpan } from '../../../utils/genAi';
 import AddSpanToFunnelModal from '../../AddSpanToFunnelModal/AddSpanToFunnelModal';
 import { IInterestedSpan } from '../../types';
 
@@ -328,14 +335,23 @@ const SpanOverview = memo(function SpanOverview({
 			</span>
 
 			{/* Colored service dot */}
-			<span
-				className={cx(styles.treeIcon, { [styles.hasError]: span.has_error })}
-				style={
-					{
-						'--service-dot-color': effectiveColor,
-					} as React.CSSProperties
-				}
-			/>
+			{isAiSpan(span) ? (
+				<Sparkle
+					size={10}
+					color={effectiveColor}
+					fill={effectiveColor}
+					className={styles.aiSpanIcon}
+				/>
+			) : (
+				<span
+					className={cx(styles.treeIcon, { [styles.hasError]: span.has_error })}
+					style={
+						{
+							'--service-dot-color': effectiveColor,
+						} as React.CSSProperties
+					}
+				/>
+			)}
 
 			{/* Span name + service name */}
 			<span className={styles.treeLabel}>
@@ -971,9 +987,7 @@ function Success(props: ISuccessProps): JSX.Element {
 									onMouseLeave={(): void => applyHoverClass(null)}
 									onClick={(): void => handleSpanClick(span)}
 								>
-									{span.response_status_code && (
-										<HttpStatusBadge statusCode={span.response_status_code} />
-									)}
+									<SpanHintBadge span={span} />
 								</div>
 							);
 						})}

frontend/src/pages/TraceDetailsV3/constants.ts

@@ -53,3 +53,8 @@ export const COLOR_BY_FIELDS: TelemetryFieldKey[] = COLOR_BY_OPTIONS.map(
 );
 
 export const DEFAULT_COLOR_BY_FIELD = COLOR_BY_FIELDS[0];
+
+export enum TraceDetailsTab {
+	Overview = 'overview',
+	Thread = 'thread',
+}

frontend/src/pages/TraceDetailsV3/hooks/useTraceDetailsTab.ts

@@ -0,0 +1,15 @@
+import { parseAsStringEnum, useQueryState, UseQueryStateReturn } from 'nuqs';
+
+import { TraceDetailsTab } from '../constants';
+
+export function useTraceDetailsTab(): UseQueryStateReturn<
+	TraceDetailsTab,
+	TraceDetailsTab
+> {
+	return useQueryState(
+		'tab',
+		parseAsStringEnum(Object.values(TraceDetailsTab)).withDefault(
+			TraceDetailsTab.Overview,
+		),
+	);
+}

frontend/src/pages/TraceDetailsV3/index.tsx

@@ -1,89 +1,18 @@
-/* eslint-disable sonarjs/cognitive-complexity */
-import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
-import { useParams } from 'react-router-dom';
-import {
-	ChartNoAxesGantt,
-	ChevronDown,
-	ChevronRight,
-	Info,
-	TriangleAlert,
-} from '@signozhq/icons';
-import getLocalStorageKey from 'api/browser/localstorage/get';
-import setLocalStorageKey from 'api/browser/localstorage/set';
-import { Collapse } from 'antd';
-import { useDetailsPanel } from 'components/DetailsPanel';
-import WarningPopover from 'components/WarningPopover/WarningPopover';
-import { LOCALSTORAGE } from 'constants/localStorage';
-import useGetTraceV4 from 'hooks/trace/useGetTraceV4';
-import { useTraceDetailsStripInfo } from './useTraceDetailsStripInfo';
-import { useSafeNavigate } from 'hooks/useSafeNavigate';
-import useUrlQuery from 'hooks/useUrlQuery';
-import { ResizableBox } from 'periscope/components/ResizableBox';
-import { SpanV3, TraceDetailV3URLProps } from 'types/api/trace/getTraceV3';
+import { useCallback, useEffect, useState } from 'react';
 
-import { TraceDetailEventKeys, TraceDetailEvents } from './events';
-import { useTraceDetailLogEvent } from './hooks/useTraceDetailLogEvent';
-import NoData from './NoData/NoData';
-import TraceStoreSync from './stores/TraceStoreSync';
-import { useTraceStore } from './stores/traceStore';
-import { SpanDetailVariant } from './SpanDetailsPanel/constants';
-import SpanDetailsPanel from './SpanDetailsPanel/SpanDetailsPanel';
-import type { TraceMetadataForHeader } from './TraceDetailsHeader/TraceDetailsHeader';
+import { TraceDetailsTab } from './constants';
+import { useTraceDetailsTab } from './hooks/useTraceDetailsTab';
 import TraceDetailsHeader from './TraceDetailsHeader/TraceDetailsHeader';
-import { FLAMEGRAPH_SPAN_LIMIT } from './TraceFlamegraph/constants';
-import TraceFlamegraph from './TraceFlamegraph/TraceFlamegraph';
-import TraceWaterfall from './TraceWaterfall/TraceWaterfall';
-import { IInterestedSpan } from './TraceWaterfall/types';
-import { getAncestorSpanIds } from './TraceWaterfall/utils';
-import { getAvailableColorByFieldNames } from './utils';
-
-import cx from 'classnames';
-
-import styles from './TraceDetailsV3.module.scss';
-
-// Lucide chevrons for the flame/waterfall accordion headers, matching the
-// span-tree chevrons in the waterfall.
-function renderPanelExpandIcon({
-	isActive,
-}: {
-	isActive?: boolean;
-}): JSX.Element {
-	return isActive ? <ChevronDown size={14} /> : <ChevronRight size={14} />;
-}
+import TraceDetailsOverview from './TraceDetailsOverview/TraceDetailsOverview';
+import TraceDetailsThread from './TraceDetailsThread/TraceDetailsThread';
+import TraceDetailsWrapper from './TraceDetailsWrapper/TraceDetailsWrapper';
 
 function TraceDetailsV3(): JSX.Element {
-	const { id: traceId } = useParams<TraceDetailV3URLProps>();
-	const urlQuery = useUrlQuery();
-	const [interestedSpanId, setInterestedSpanId] = useState<IInterestedSpan>(
-		() => ({
-			spanId: urlQuery.get('spanId') || '',
-			isUncollapsed: urlQuery.get('spanId') !== '',
-		}),
-	);
-	const [uncollapsedNodes, setUncollapsedNodes] = useState<string[]>([]);
-	const [localUncollapsedNodes, setLocalUncollapsedNodes] = useState<
-		Set<string>
-	>(new Set());
-	const [selectedSpan, setSelectedSpan] = useState<SpanV3>();
+	const [tab] = useTraceDetailsTab();
+	const isOverview = tab === TraceDetailsTab.Overview;
 	const [filteredSpanIds, setFilteredSpanIds] = useState<string[]>([]);
 	const [isFilterActive, setIsFilterActive] = useState(false);
 
-	const selectedSpanId = urlQuery.get('spanId') || undefined;
-	const { safeNavigate } = useSafeNavigate();
-
-	const logTraceEvent = useTraceDetailLogEvent('v3', traceId || '');
-	// Tracks which traceId the load event already fired for, so navigating
-	// between traces (the route component stays mounted) re-fires it once each.
-	const dataLoadedFiredForRef = useRef('');
-	const colorByField = useTraceStore((s) => s.colorByField);
-	const previewFieldsCount = useTraceStore((s) => s.previewFields.length);
-	const userPrefsReady = useTraceStore((s) => s.userPreferences !== null);
-
-	const handleSpanDetailsClose = useCallback((): void => {
-		urlQuery.delete('spanId');
-		safeNavigate({ search: urlQuery.toString() }, { replace: true });
-	}, [urlQuery, safeNavigate]);
-
 	const handleFilteredSpansChange = useCallback(
 		(spanIds: string[], isActive: boolean): void => {
 			setFilteredSpanIds(spanIds);
@@ -92,453 +21,26 @@ function TraceDetailsV3(): JSX.Element {
 		[],
 	);
 
-	const panelState = useDetailsPanel({
-		entityId: selectedSpanId,
-		onClose: handleSpanDetailsClose,
-	});
-
-	const allSpansRef = useRef<SpanV3[]>([]);
-	const deepLinkResolvedRef = useRef(false);
-
-	// Refetch only when the URL target isn't already loaded. Keeps row clicks
-	// and other in-window URL navigation from triggering a backend window slide.
+	// The filter query lives in Filters' local state, which unmounts with the
+	// Overview tab; drop its result too so both start empty on return.
 	useEffect(() => {
-		const spanId = urlQuery.get('spanId') || '';
-		if (!spanId) {
-			return;
+		if (!isOverview) {
+			handleFilteredSpansChange([], false);
 		}
-		const idx = allSpansRef.current.findIndex((s) => s.span_id === spanId);
-		if (idx !== -1) {
-			setSelectedSpan(allSpansRef.current[idx]);
-			return;
-		}
-		setInterestedSpanId({ spanId, isUncollapsed: true });
-	}, [urlQuery]);
-
-	// Once all spans are loaded (frontend mode), freeze query params so
-	// subsequent interestedSpanId changes don't trigger unnecessary refetches.
-	const fullDataLoadedRef = useRef(false);
-	const frozenParamsRef = useRef({
-		selectedSpanId: interestedSpanId.spanId,
-		isSelectedSpanIDUnCollapsed: interestedSpanId.isUncollapsed,
-		uncollapsedSpans: uncollapsedNodes,
-	});
-
-	const queryParams = fullDataLoadedRef.current
-		? frozenParamsRef.current
-		: {
-				selectedSpanId: interestedSpanId.spanId,
-				isSelectedSpanIDUnCollapsed: interestedSpanId.isUncollapsed,
-				uncollapsedSpans: uncollapsedNodes,
-			};
-
-	const {
-		data: traceData,
-		isFetching: isFetchingTraceData,
-		error: errorFetchingTraceData,
-	} = useGetTraceV4({
-		traceId,
-		uncollapsedSpans: queryParams.uncollapsedSpans,
-		selectedSpanId: queryParams.selectedSpanId,
-		isSelectedSpanIDUnCollapsed: queryParams.isSelectedSpanIDUnCollapsed,
-	});
-
-	const allSpans = traceData?.payload?.spans || [];
-	const totalSpansCount = traceData?.payload?.totalSpansCount || 0;
-	const totalErrorSpansCount = traceData?.payload?.totalErrorSpansCount || 0;
-
-	useTraceDetailsStripInfo({ totalSpansCount, totalErrorSpansCount });
-
-	const isFullDataLoaded =
-		totalSpansCount > 0 && totalSpansCount <= allSpans.length;
-
-	// Color-by options, gated on fields in loaded spans. Resource attrs are
-	// trace-wide, so any window has the full set — no need to accumulate.
-	const availableColorByFields = useMemo(() => {
-		const spans = traceData?.payload?.spans;
-		return spans?.length ? getAvailableColorByFieldNames(spans) : undefined;
-	}, [traceData?.payload?.spans]);
-
-	// Lock the ref once we confirm all data is loaded
-	if (isFullDataLoaded && !fullDataLoadedRef.current) {
-		fullDataLoadedRef.current = true;
-		frozenParamsRef.current = {
-			selectedSpanId: interestedSpanId.spanId,
-			isSelectedSpanIDUnCollapsed: interestedSpanId.isUncollapsed,
-			uncollapsedSpans: uncollapsedNodes,
-		};
-	}
-
-	useEffect(() => {
-		allSpansRef.current = allSpans;
-	}, [allSpans]);
-
-	useEffect(() => {
-		if (
-			!traceId ||
-			dataLoadedFiredForRef.current === traceId ||
-			!userPrefsReady
-		) {
-			return;
-		}
-		const payload = traceData?.payload;
-		if (!payload?.spans?.length) {
-			return;
-		}
-		dataLoadedFiredForRef.current = traceId;
-		const numServices = new Set(payload.spans.map((s) => s['service.name'])).size;
-		logTraceEvent(TraceDetailEvents.DataLoaded, {
-			[TraceDetailEventKeys.TotalSpansCount]: totalSpansCount,
-			[TraceDetailEventKeys.NumServices]: numServices,
-			[TraceDetailEventKeys.TraceDurationMs]:
-				payload.endTimestampMillis - payload.startTimestampMillis,
-			[TraceDetailEventKeys.HadErrors]: (payload.totalErrorSpansCount || 0) > 0,
-			[TraceDetailEventKeys.FlamegraphSampled]:
-				totalSpansCount > FLAMEGRAPH_SPAN_LIMIT,
-			[TraceDetailEventKeys.SpanPanelVariant]:
-				getLocalStorageKey(LOCALSTORAGE.TRACE_DETAILS_SPAN_DETAILS_POSITION) ||
-				SpanDetailVariant.DOCKED_RIGHT,
-			[TraceDetailEventKeys.ColorByField]: colorByField.name,
-			[TraceDetailEventKeys.PreviewFieldsCount]: previewFieldsCount,
-		});
-	}, [
-		traceId,
-		userPrefsReady,
-		traceData,
-		totalSpansCount,
-		colorByField,
-		previewFieldsCount,
-		logTraceEvent,
-	]);
-
-	// Frontend mode: expand all parents by default when full data arrives
-	useEffect(() => {
-		if (isFullDataLoaded && allSpans.length > 0) {
-			const parentIds = new Set(
-				allSpans.filter((s) => s.has_children).map((s) => s.span_id),
-			);
-			setLocalUncollapsedNodes(parentIds);
-		}
-	}, [isFullDataLoaded, allSpans]);
-
-	// Backend mode: sync uncollapsed state from API response
-	useEffect(() => {
-		if (
-			!isFullDataLoaded &&
-			traceData &&
-			traceData.payload &&
-			traceData.payload.uncollapsedSpans
-		) {
-			setUncollapsedNodes(traceData.payload.uncollapsedSpans);
-		}
-	}, [traceData, isFullDataLoaded]);
-
-	// Tracks whether we've already done the initial URL→selectedSpan handoff
-	//Lets `interestedSpanId` stay purely as the refetch trigger in frontend mode.
-	useEffect(() => {
-		if (deepLinkResolvedRef.current) {
-			return;
-		}
-		if (allSpans.length === 0) {
-			return;
-		}
-		if (selectedSpanId) {
-			const span = allSpans.find((s) => s.span_id === selectedSpanId);
-			if (!span) {
-				// Span not in the current window — wait for more data (backend
-				// pagination) before marking resolved.
-				return;
-			}
-			setSelectedSpan(span);
-		} else {
-			setSelectedSpan((prev) => prev ?? allSpans[0]);
-		}
-		deepLinkResolvedRef.current = true;
-	}, [selectedSpanId, allSpans]);
-
-	// Frontend mode: auto-expand ancestors of the URL-targeted span so it's
-	// visible. Keyed on URL `spanId`(selectedSpanId).
-	useEffect(() => {
-		if (!isFullDataLoaded || !selectedSpanId || allSpans.length === 0) {
-			return;
-		}
-		const ancestors = getAncestorSpanIds(allSpans, selectedSpanId);
-		if (ancestors.size === 0) {
-			return;
-		}
-		setLocalUncollapsedNodes((prev) => {
-			// Check if all ancestors are already expanded — avoid unnecessary state update
-			let allPresent = true;
-			for (const id of ancestors) {
-				if (!prev.has(id)) {
-					allPresent = false;
-					break;
-				}
-			}
-			if (allPresent) {
-				return prev;
-			}
-
-			const next = new Set(prev);
-			for (const id of ancestors) {
-				next.add(id);
-			}
-			return next;
-		});
-	}, [isFullDataLoaded, selectedSpanId, allSpans]);
-
-	const [activeKeys, setActiveKeys] = useState<string[]>(['flame', 'waterfall']);
-
-	const handleCollapseChange = (key: string): void => {
-		logTraceEvent(
-			key === 'flame'
-				? TraceDetailEvents.FlameGraphToggled
-				: TraceDetailEvents.WaterfallToggled,
-			{ [TraceDetailEventKeys.Expanded]: !activeKeys.includes(key) },
-		);
-		setActiveKeys((prev) =>
-			prev.includes(key) ? prev.filter((k) => k !== key) : [...prev, key],
-		);
-	};
-
-	const [spanDetailVariant, setSpanDetailVariant] = useState<SpanDetailVariant>(
-		() =>
-			(getLocalStorageKey(
-				LOCALSTORAGE.TRACE_DETAILS_SPAN_DETAILS_POSITION,
-			) as SpanDetailVariant) || SpanDetailVariant.DOCKED_RIGHT,
-	);
-
-	const RIGHT_DOCK_MIN = 480;
-	const RIGHT_DOCK_MAX = 720;
-	const [rightDockWidth, setRightDockWidth] = useState(RIGHT_DOCK_MIN);
-
-	const handleVariantChange = useCallback(
-		(newVariant: SpanDetailVariant): void => {
-			setLocalStorageKey(
-				LOCALSTORAGE.TRACE_DETAILS_SPAN_DETAILS_POSITION,
-				newVariant,
-			);
-			setSpanDetailVariant(newVariant);
-		},
-		[],
-	);
-
-	const filterMetadata = useMemo(
-		() => ({
-			startTime: (traceData?.payload?.startTimestampMillis || 0) / 1e3,
-			endTime: (traceData?.payload?.endTimestampMillis || 0) / 1e3,
-			traceId: traceId || '',
-		}),
-		[
-			traceData?.payload?.startTimestampMillis,
-			traceData?.payload?.endTimestampMillis,
-			traceId,
-		],
-	);
-
-	const traceMetadataForHeader = useMemo(():
-		| TraceMetadataForHeader
-		| undefined => {
-		const payload = traceData?.payload;
-		if (!payload) {
-			return undefined;
-		}
-		const rootSpan = payload.spans?.find((s) => s.level === 0);
-		return {
-			startTimestampMillis: payload.startTimestampMillis,
-			endTimestampMillis: payload.endTimestampMillis,
-			rootServiceName: payload.rootServiceName,
-			rootServiceEntryPoint: payload.rootServiceEntryPoint,
-			rootSpanStatusCode: rootSpan?.response_status_code || '',
-			hasMissingSpans: payload.hasMissingSpans || false,
-			totalSpansCount: payload.totalSpansCount || 0,
-		};
-	}, [traceData?.payload]);
-
-	const showNoData =
-		!isFetchingTraceData &&
-		(!!errorFetchingTraceData || !traceData?.payload?.spans?.length);
-
-	const isDocked = spanDetailVariant === SpanDetailVariant.DOCKED;
-	const isRightDocked = spanDetailVariant === SpanDetailVariant.DOCKED_RIGHT;
-	const isWaterfallDocked = panelState.isOpen && isDocked;
-	const showRightDock = panelState.isOpen && isRightDocked;
-
-	const waterfallChildren = (
-		<ResizableBox
-			defaultHeight={300}
-			minHeight={150}
-			disabled={!isWaterfallDocked}
-		>
-			<TraceWaterfall
-				traceData={traceData}
-				isFetchingTraceData={isFetchingTraceData}
-				errorFetchingTraceData={errorFetchingTraceData}
-				traceId={traceId || ''}
-				interestedSpanId={interestedSpanId}
-				setInterestedSpanId={setInterestedSpanId}
-				uncollapsedNodes={uncollapsedNodes}
-				isFullDataLoaded={isFullDataLoaded}
-				localUncollapsedNodes={localUncollapsedNodes}
-				setLocalUncollapsedNodes={setLocalUncollapsedNodes}
-				selectedSpan={selectedSpan}
-				setSelectedSpan={setSelectedSpan}
-				filteredSpanIds={filteredSpanIds}
-				isFilterActive={isFilterActive}
-			/>
-		</ResizableBox>
-	);
+	}, [isOverview, handleFilteredSpansChange]);
 
 	return (
-		<TraceStoreSync availableColorByFields={availableColorByFields}>
-			<div className={styles.root}>
-				<TraceDetailsHeader
-					filterMetadata={filterMetadata}
-					onFilteredSpansChange={handleFilteredSpansChange}
-					isDataLoaded={!!traceData?.payload?.spans?.length && !showNoData}
-					traceMetadata={traceMetadataForHeader}
+		<TraceDetailsWrapper>
+			<TraceDetailsHeader onFilteredSpansChange={handleFilteredSpansChange} />
+			{isOverview ? (
+				<TraceDetailsOverview
+					filteredSpanIds={filteredSpanIds}
+					isFilterActive={isFilterActive}
 				/>
-
-				{showNoData ? (
-					<NoData />
-				) : (
-					<>
-						<div className={styles.layoutRow}>
-							<div className={styles.content}>
-								<Collapse
-									// @ts-expect-error motion is passed through to rc-collapse to disable animation
-									motion={false}
-									activeKey={activeKeys.filter((k) => k === 'flame')}
-									onChange={(): void => handleCollapseChange('flame')}
-									size="small"
-									expandIcon={renderPanelExpandIcon}
-									className={styles.flameCollapse}
-									items={[
-										{
-											key: 'flame',
-											label: (
-												<div className={styles.collapseLabel}>
-													<span className={styles.collapseTitle}>
-														Flame Graph
-														{traceData?.payload?.totalSpansCount &&
-															traceData.payload.totalSpansCount > FLAMEGRAPH_SPAN_LIMIT && (
-																<WarningPopover
-																	message="The total span count exceeds the visualization limit. Displaying a sampled subset of spans in flamegraph."
-																	placement="bottomLeft"
-																>
-																	<Info
-																		size={16}
-																		color="var(--l2-foreground)"
-																		style={{ cursor: 'pointer' }}
-																	/>
-																</WarningPopover>
-															)}
-													</span>
-													{traceData?.payload?.totalSpansCount ? (
-														<span className={styles.collapseCount}>
-															<span className={styles.collapseCountItem}>
-																<ChartNoAxesGantt size={13} />
-																Spans: {traceData.payload.totalSpansCount}
-															</span>
-															<span
-																className={cx(styles.collapseCountItem, {
-																	[styles.hasErrors]: traceData.payload.totalErrorSpansCount > 0,
-																})}
-															>
-																<TriangleAlert size={13} />
-																Errors:{' '}
-																{traceData.payload.totalErrorSpansCount ?? (
-																	<span className="translate-safe">{0}</span>
-																)}
-															</span>
-														</span>
-													) : null}
-												</div>
-											),
-											children: (
-												<ResizableBox defaultHeight={300} minHeight={100} maxHeight={400}>
-													<TraceFlamegraph
-														filteredSpanIds={filteredSpanIds}
-														isFilterActive={isFilterActive}
-														selectedSpan={selectedSpan}
-														totalSpansCount={totalSpansCount}
-													/>
-												</ResizableBox>
-											),
-										},
-									]}
-								/>
-
-								<Collapse
-									// @ts-expect-error motion is passed through to rc-collapse to disable animation
-									motion={false}
-									activeKey={activeKeys.filter((k) => k === 'waterfall')}
-									onChange={(): void => handleCollapseChange('waterfall')}
-									size="small"
-									expandIcon={renderPanelExpandIcon}
-									className={cx(styles.waterfallCollapse, {
-										[styles.isDocked]: isWaterfallDocked,
-									})}
-									items={[
-										{
-											key: 'waterfall',
-											label: 'Waterfall',
-											children: activeKeys.includes('waterfall')
-												? waterfallChildren
-												: null,
-										},
-									]}
-								/>
-
-								{panelState.isOpen && isDocked && (
-									<div className={styles.dockedSpanDetails}>
-										<SpanDetailsPanel
-											panelState={panelState}
-											selectedSpan={selectedSpan}
-											variant={SpanDetailVariant.DOCKED}
-											onVariantChange={handleVariantChange}
-											traceStartTime={traceData?.payload?.startTimestampMillis}
-											traceEndTime={traceData?.payload?.endTimestampMillis}
-										/>
-									</div>
-								)}
-							</div>
-
-							{showRightDock && (
-								<ResizableBox
-									handle="left"
-									defaultWidth={rightDockWidth}
-									minWidth={RIGHT_DOCK_MIN}
-									maxWidth={RIGHT_DOCK_MAX}
-									onResize={setRightDockWidth}
-									className={styles.rightDock}
-								>
-									<SpanDetailsPanel
-										panelState={panelState}
-										selectedSpan={selectedSpan}
-										variant={SpanDetailVariant.DOCKED_RIGHT}
-										onVariantChange={handleVariantChange}
-										traceStartTime={traceData?.payload?.startTimestampMillis}
-										traceEndTime={traceData?.payload?.endTimestampMillis}
-									/>
-								</ResizableBox>
-							)}
-						</div>
-
-						{panelState.isOpen && spanDetailVariant === SpanDetailVariant.DIALOG && (
-							<SpanDetailsPanel
-								panelState={panelState}
-								selectedSpan={selectedSpan}
-								variant={SpanDetailVariant.DIALOG}
-								onVariantChange={handleVariantChange}
-								traceStartTime={traceData?.payload?.startTimestampMillis}
-								traceEndTime={traceData?.payload?.endTimestampMillis}
-							/>
-						)}
-					</>
-				)}
-			</div>
-		</TraceStoreSync>
+			) : (
+				<TraceDetailsThread />
+			)}
+		</TraceDetailsWrapper>
 	);
 }
 

frontend/src/pages/TraceDetailsV3/stores/TraceStoreSync.tsx

@@ -4,36 +4,28 @@ import updateUserPreferenceAPI from 'api/v1/user/preferences/name/update';
 import { useAppContext } from 'providers/App/App';
 
 import {
-	setTraceStoreAvailableColorByFields,
 	setTraceStoreCallbacks,
 	setTraceStoreUserPreferences,
 } from './traceStore';
 
 interface TraceStoreSyncProps {
-	availableColorByFields: string[] | undefined;
 	children: ReactNode;
 }
 
 /**
- * Bridges React-managed inputs (`availableColorByFields`, `userPreferences`
- * from AppContext, and the user-pref mutation hook) into the Zustand store.
+ * Bridges React-managed inputs (`userPreferences` from AppContext and the
+ * user-pref mutation hook) into the Zustand store. `availableColorByFields`
+ * is pushed by TraceDetailsOverview, which owns the span data.
  *
  * Renders nothing until `userPreferences` resolves so the flamegraph never
  * paints with the default colour first and then swaps to the user's
  * persisted choice. AppProvider fires the prefs query as soon as the user
  * is logged in, so this gate is usually already settled by mount time.
  */
-function TraceStoreSync({
-	availableColorByFields,
-	children,
-}: TraceStoreSyncProps): JSX.Element | null {
+function TraceStoreSync({ children }: TraceStoreSyncProps): JSX.Element | null {
 	const { userPreferences, updateUserPreferenceInContext } = useAppContext();
 	const { mutate: mutateUserPreference } = useMutation(updateUserPreferenceAPI);
 
-	useEffect(() => {
-		setTraceStoreAvailableColorByFields(availableColorByFields);
-	}, [availableColorByFields]);
-
 	useEffect(() => {
 		setTraceStoreUserPreferences(userPreferences ?? null);
 	}, [userPreferences]);

frontend/src/pages/TraceDetailsV3/stores/traceStore.ts

@@ -37,7 +37,7 @@ interface TraceStoreState {
 	availableColorByOptions: ColorByOption[];
 	previewFields: TelemetryFieldKey[];
 
-	// --- Setters used only by TraceStoreSync ---
+	// --- Setters used only by TraceStoreSync and TraceDetailsOverview ---
 	setAvailableColorByFields: (fieldNames: string[] | undefined) => void;
 	setUserPreferences: (userPreferences: UserPreference[] | null) => void;
 	setCallbacks: (callbacks: {

frontend/src/pages/TraceDetailsV3/utils/__tests__/genAi.test.ts

@@ -0,0 +1,32 @@
+import { SpanV3 } from 'types/api/trace/getTraceV3';
+
+import { AiSpanKind, getAiSpanKind, isAiSpan } from '../genAi';
+
+const spanWith = (attributes: Record<string, string | number>): SpanV3 =>
+	({ attributes, resource: {} }) as unknown as SpanV3;
+
+describe('getAiSpanKind', () => {
+	it.each<[Record<string, string | number>, AiSpanKind]>([
+		[{ 'gen_ai.request.model': 'gpt-4o' }, AiSpanKind.Llm],
+		[{ 'gen_ai.usage.input_tokens': 0 }, AiSpanKind.Llm],
+		[{ 'gen_ai.usage.reasoning.output_tokens': 12 }, AiSpanKind.Llm],
+		[{ 'gen_ai.tool.name': 'search' }, AiSpanKind.Tool],
+		[{ 'gen_ai.agent.name': 'planner' }, AiSpanKind.Agent],
+		[
+			{ 'gen_ai.tool.name': 'search', 'gen_ai.request.model': 'gpt-4o' },
+			AiSpanKind.Tool,
+		],
+		[
+			{ 'gen_ai.agent.name': 'planner', 'gen_ai.usage.input_tokens': 10 },
+			AiSpanKind.Agent,
+		],
+	])('classifies %p as %s', (attributes, kind) => {
+		expect(getAiSpanKind(spanWith(attributes))).toBe(kind);
+	});
+
+	it('returns undefined for non-AI spans and empty values', () => {
+		expect(getAiSpanKind(spanWith({ 'http.method': 'GET' }))).toBeUndefined();
+		expect(getAiSpanKind(spanWith({ 'gen_ai.tool.name': '' }))).toBeUndefined();
+		expect(isAiSpan(spanWith({}))).toBe(false);
+	});
+});

frontend/src/pages/TraceDetailsV3/utils/genAi.ts

@@ -0,0 +1,54 @@
+import { SpanV3 } from 'types/api/trace/getTraceV3';
+
+export const GEN_AI_KEYS = {
+	providerName: 'gen_ai.provider.name',
+	system: 'gen_ai.system',
+	requestModel: 'gen_ai.request.model',
+	responseModel: 'gen_ai.response.model',
+	toolName: 'gen_ai.tool.name',
+	agentName: 'gen_ai.agent.name',
+	inputTokens: 'gen_ai.usage.input_tokens',
+	outputTokens: 'gen_ai.usage.output_tokens',
+	cacheReadTokens: 'gen_ai.usage.cache_read.input_tokens',
+	cacheCreationTokens: 'gen_ai.usage.cache_creation.input_tokens',
+	reasoningTokens: 'gen_ai.usage.reasoning.output_tokens',
+	cost: 'signoz.gen_ai.usage.tokens.cost',
+} as const;
+
+export enum AiSpanKind {
+	Llm = 'llm',
+	Tool = 'tool',
+	Agent = 'agent',
+}
+
+const LLM_KEYS = [
+	GEN_AI_KEYS.requestModel,
+	GEN_AI_KEYS.inputTokens,
+	GEN_AI_KEYS.outputTokens,
+	GEN_AI_KEYS.cacheReadTokens,
+	GEN_AI_KEYS.cacheCreationTokens,
+	GEN_AI_KEYS.reasoningTokens,
+];
+
+function hasAttribute(span: SpanV3, key: string): boolean {
+	const value = span.attributes?.[key] ?? span.resource?.[key];
+	return value !== undefined && value !== null && value !== '';
+}
+
+/** Tool and agent spans may also carry model or usage keys, so they win over LLM. */
+export function getAiSpanKind(span: SpanV3): AiSpanKind | undefined {
+	if (hasAttribute(span, GEN_AI_KEYS.toolName)) {
+		return AiSpanKind.Tool;
+	}
+	if (hasAttribute(span, GEN_AI_KEYS.agentName)) {
+		return AiSpanKind.Agent;
+	}
+	if (LLM_KEYS.some((key) => hasAttribute(span, key))) {
+		return AiSpanKind.Llm;
+	}
+	return undefined;
+}
+
+export function isAiSpan(span: SpanV3): boolean {
+	return getAiSpanKind(span) !== undefined;
+}

frontend/src/pages/TracesExplorer/index.tsx

@@ -5,6 +5,7 @@ import * as Sentry from '@sentry/react';
 import logEvent from 'api/common/logEvent';
 import ExplorerCard from 'components/ExplorerCard/ExplorerCard';
 import QueryCancelledPlaceholder from 'components/QueryCancelledPlaceholder';
+import { SavedviewtypesSourceDTO } from 'api/generated/services/sigNoz.schemas';
 import QuickFiltersLayout from 'components/QuickFilters/QuickFiltersLayout/QuickFiltersLayout';
 import { useSignalFieldApis } from 'components/QuickFilters/hooks/useSignalFieldApis';
 import { QuickFiltersSource, SignalType } from 'components/QuickFilters/types';
@@ -285,6 +286,7 @@ function TracesExplorer(): JSX.Element {
 			<QuickFiltersLayout
 				className="trace-explorer-page"
 				showFilters={isOpen}
+				savedViewProps={{ source: SavedviewtypesSourceDTO.traces }}
 				quickFilterProps={{
 					className: 'qf-traces-explorer',
 					source: QuickFiltersSource.TRACES_EXPLORER,

pkg/apiserver/signozapiserver/tracedetail.go

@@ -10,6 +10,23 @@ import (
 )
 
 func (provider *provider) addTraceDetailRoutes(router *mux.Router) error {
+	if err := router.Handle("/api/v1/traces/{traceID}/summary", handler.New(
+		provider.authzMiddleware.ViewAccess(provider.traceDetailHandler.GetTraceSummary),
+		handler.OpenAPIDef{
+			ID:                  "GetTraceSummary",
+			Tags:                []string{"tracedetail"},
+			Summary:             "Get summary for a trace",
+			Description:         "Returns the trace's time range, root span, span and error counts, and whether any spans are missing. AI traces also include token and cost totals.",
+			Response:            new(spantypes.GettableTraceSummary),
+			ResponseContentType: "application/json",
+			SuccessStatusCode:   http.StatusOK,
+			ErrorStatusCodes:    []int{http.StatusNotFound},
+			SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
+		},
+	)).Methods(http.MethodGet).GetError(); err != nil {
+		return err
+	}
+
 	if err := router.Handle("/api/v4/traces/{traceID}/waterfall", handler.New(
 		provider.authzMiddleware.ViewAccess(provider.traceDetailHandler.GetWaterfallV4),
 		handler.OpenAPIDef{

pkg/modules/tracedetail/impltracedetail/handler.go

@@ -6,7 +6,9 @@ import (
 	"github.com/SigNoz/signoz/pkg/http/binding"
 	"github.com/SigNoz/signoz/pkg/http/render"
 	"github.com/SigNoz/signoz/pkg/modules/tracedetail"
+	"github.com/SigNoz/signoz/pkg/types/authtypes"
 	"github.com/SigNoz/signoz/pkg/types/spantypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
 	"github.com/gorilla/mux"
 )
 
@@ -18,6 +20,22 @@ func NewHandler(module tracedetail.Module) tracedetail.Handler {
 	return &handler{module: module}
 }
 
+func (h *handler) GetTraceSummary(rw http.ResponseWriter, r *http.Request) {
+	claims, err := authtypes.ClaimsFromContext(r.Context())
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	stats, err := h.module.GetTraceSummary(r.Context(), valuer.MustNewUUID(claims.OrgID), mux.Vars(r)["traceID"])
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	render.Success(rw, http.StatusOK, spantypes.NewGettableTraceSummary(stats))
+}
+
 func (h *handler) GetWaterfallV4(rw http.ResponseWriter, r *http.Request) {
 	req := new(spantypes.PostableWaterfall)
 	if err := binding.JSON.BindBody(r.Body, req); err != nil {

pkg/modules/tracedetail/impltracedetail/module.go

@@ -8,6 +8,7 @@ import (
 	"github.com/SigNoz/signoz/pkg/modules/tracedetail"
 	"github.com/SigNoz/signoz/pkg/types/spantypes"
 	"github.com/SigNoz/signoz/pkg/types/telemetrytypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
 	"go.opentelemetry.io/otel/metric"
 )
 
@@ -39,26 +40,41 @@ func NewModule(traceStore spantypes.TraceStore, providerSettings factory.Provide
 	return m
 }
 
+func (m *module) GetTraceSummary(ctx context.Context, orgID valuer.UUID, traceID string) (*spantypes.TraceStats, error) {
+	bounds, err := m.store.GetTraceBounds(ctx, traceID)
+	if err != nil {
+		return nil, err
+	}
+	stats, err := m.store.GetTraceStats(ctx, orgID, traceID, bounds)
+	if err != nil {
+		return nil, err
+	}
+	if stats.TotalSpans == 0 {
+		return nil, spantypes.ErrTraceNotFound
+	}
+	return stats, nil
+}
+
 // GetWaterfallV4 is the OOM-safe V4 waterfall.
 // For large traces (NumSpans > effectiveLimit) it uses a two-step fetch:
 // minimal fields for all spans to build the tree, then full fields for the
 // visible window only. Aggregations are not returned.
 func (m *module) GetWaterfallV4(ctx context.Context, traceID string, selectedSpanID string, uncollapsedSpans []string) (*spantypes.GettableWaterfallTrace, error) {
-	summary, err := m.store.GetTraceSummary(ctx, traceID)
+	bounds, err := m.store.GetTraceBounds(ctx, traceID)
 	if err != nil {
 		return nil, err
 	}
-	if summary.NumSpans > uint64(m.config.Waterfall.MaxLimitToSelectAllSpans) {
+	if bounds.NumSpans > uint64(m.config.Waterfall.MaxLimitToSelectAllSpans) {
 		attrs := metric.WithAttributes(attrResponseType.String(attrResponseTypeWindowed))
 		m.metrics.waterfallRequestCount.Add(ctx, 1, attrs)
-		m.metrics.waterfallSpanCount.Add(ctx, int64(summary.NumSpans), attrs)
-		return m.getWindowedWaterfall(ctx, traceID, selectedSpanID, uncollapsedSpans, summary.Start, summary.End)
+		m.metrics.waterfallSpanCount.Add(ctx, int64(bounds.NumSpans), attrs)
+		return m.getWindowedWaterfall(ctx, traceID, selectedSpanID, uncollapsedSpans, bounds.Start, bounds.End)
 	}
-	return m.getFullWaterfall(ctx, traceID, summary)
+	return m.getFullWaterfall(ctx, traceID, bounds)
 }
 
-func (m *module) getFullWaterfall(ctx context.Context, traceID string, summary *spantypes.TraceSummary) (*spantypes.GettableWaterfallTrace, error) {
-	spanItems, err := m.store.GetTraceSpans(ctx, traceID, summary)
+func (m *module) getFullWaterfall(ctx context.Context, traceID string, bounds *spantypes.TraceBounds) (*spantypes.GettableWaterfallTrace, error) {
+	spanItems, err := m.store.GetTraceSpans(ctx, traceID, bounds)
 	if err != nil {
 		return nil, err
 	}
@@ -78,24 +94,24 @@ func (m *module) getFullWaterfall(ctx context.Context, traceID string, summary *
 }
 
 func (m *module) GetTraceAggregations(ctx context.Context, traceID string, req *spantypes.PostableTraceAggregations) (*spantypes.GettableTraceAggregations, error) {
-	summary, err := m.store.GetTraceSummary(ctx, traceID)
+	bounds, err := m.store.GetTraceBounds(ctx, traceID)
 	if err != nil {
 		return nil, err
 	}
 
-	traceDurationNs := uint64(summary.End.UnixNano()) - uint64(summary.Start.UnixNano())
+	traceDurationNs := uint64(bounds.End.UnixNano()) - uint64(bounds.Start.UnixNano())
 
 	results := make([]spantypes.SpanAggregationResult, 0, len(req.Aggregations))
 	for _, agg := range req.Aggregations {
 		result := spantypes.SpanAggregationResult{Field: agg.Field, Aggregation: agg.Aggregation}
 		switch agg.Aggregation {
 		case spantypes.SpanAggregationSpanCount:
-			result.Value, err = m.store.GetSpanCountByField(ctx, traceID, summary, agg.Field)
+			result.Value, err = m.store.GetSpanCountByField(ctx, traceID, bounds, agg.Field)
 			if err != nil {
 				return nil, err
 			}
 		case spantypes.SpanAggregationDuration:
-			durationNs, err2 := m.store.GetSpanDurationByField(ctx, traceID, summary, agg.Field)
+			durationNs, err2 := m.store.GetSpanDurationByField(ctx, traceID, bounds, agg.Field)
 			if err2 != nil {
 				return nil, err2
 			}
@@ -104,7 +120,7 @@ func (m *module) GetTraceAggregations(ctx context.Context, traceID string, req *
 				result.Value[k] = ns / 1_000_000
 			}
 		case spantypes.SpanAggregationExecutionTimePercentage:
-			durationNs, err2 := m.store.GetSpanDurationByField(ctx, traceID, summary, agg.Field)
+			durationNs, err2 := m.store.GetSpanDurationByField(ctx, traceID, bounds, agg.Field)
 			if err2 != nil {
 				return nil, err2
 			}
@@ -121,15 +137,15 @@ func (m *module) GetTraceAggregations(ctx context.Context, traceID string, req *
 }
 
 func (m *module) GetFlamegraph(ctx context.Context, traceID string, selectedSpanID string, selectFields []telemetrytypes.TelemetryFieldKey) (*spantypes.GettableFlamegraphTrace, error) {
-	summary, err := m.store.GetTraceSummary(ctx, traceID)
+	bounds, err := m.store.GetTraceBounds(ctx, traceID)
 	if err != nil {
 		return nil, err
 	}
-	if summary.NumSpans <= uint64(m.config.Flamegraph.SelectAllSpansLimit) {
-		return m.getFullFlamegraph(ctx, traceID, summary, selectFields)
+	if bounds.NumSpans <= uint64(m.config.Flamegraph.SelectAllSpansLimit) {
+		return m.getFullFlamegraph(ctx, traceID, bounds, selectFields)
 	}
 	m.metrics.flamegraphRequestCount.Add(ctx, 1, metric.WithAttributes(attrResponseType.String(attrResponseTypeSampled)))
-	return m.getWindowedFlamegraph(ctx, traceID, selectedSpanID, summary, selectFields)
+	return m.getWindowedFlamegraph(ctx, traceID, selectedSpanID, bounds, selectFields)
 }
 
 // getWindowedWaterfall builds the waterfall tree with minimal data and then returns only a window of full spans.
@@ -173,8 +189,8 @@ func (m *module) getWindowedWaterfall(ctx context.Context, traceID, selectedSpan
 	), nil
 }
 
-func (m *module) getFullFlamegraph(ctx context.Context, traceID string, summary *spantypes.TraceSummary, selectFields []telemetrytypes.TelemetryFieldKey) (*spantypes.GettableFlamegraphTrace, error) {
-	fullSpans, err := m.store.GetFlamegraphSpans(ctx, traceID, summary.Start, summary.End, nil)
+func (m *module) getFullFlamegraph(ctx context.Context, traceID string, bounds *spantypes.TraceBounds, selectFields []telemetrytypes.TelemetryFieldKey) (*spantypes.GettableFlamegraphTrace, error) {
+	fullSpans, err := m.store.GetFlamegraphSpans(ctx, traceID, bounds.Start, bounds.End, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -187,8 +203,8 @@ func (m *module) getFullFlamegraph(ctx context.Context, traceID string, summary
 }
 
 // getWindowedFlamegraph returns a window of a max levels and max sampled spans per level around the selected span.
-func (m *module) getWindowedFlamegraph(ctx context.Context, traceID, selectedSpanID string, summary *spantypes.TraceSummary, selectFields []telemetrytypes.TelemetryFieldKey) (*spantypes.GettableFlamegraphTrace, error) {
-	minimalSpans, err := m.store.GetMinimalSpans(ctx, traceID, summary.Start, summary.End)
+func (m *module) getWindowedFlamegraph(ctx context.Context, traceID, selectedSpanID string, bounds *spantypes.TraceBounds, selectFields []telemetrytypes.TelemetryFieldKey) (*spantypes.GettableFlamegraphTrace, error) {
+	minimalSpans, err := m.store.GetMinimalSpans(ctx, traceID, bounds.Start, bounds.End)
 	if err != nil {
 		return nil, err
 	}
@@ -207,7 +223,7 @@ func (m *module) getWindowedFlamegraph(ctx context.Context, traceID, selectedSpa
 		return nil, spantypes.ErrTraceNotFound
 	}
 
-	fullSpans, err := m.store.GetFlamegraphSpans(ctx, traceID, summary.Start, summary.End, spantypes.FlamegraphWindowSpanIDs(selectedSpans))
+	fullSpans, err := m.store.GetFlamegraphSpans(ctx, traceID, bounds.Start, bounds.End, spantypes.FlamegraphWindowSpanIDs(selectedSpans))
 	if err != nil {
 		return nil, err
 	}

pkg/modules/tracedetail/impltracedetail/store.go

@@ -4,15 +4,22 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
+	"slices"
 	"time"
 
 	sqlbuilder "github.com/huandu/go-sqlbuilder"
 
 	"github.com/SigNoz/signoz/pkg/clickhousesql"
 	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/flagger"
+	"github.com/SigNoz/signoz/pkg/querybuilder"
+	"github.com/SigNoz/signoz/pkg/telemetryschema/tracestelemetryschema"
 	"github.com/SigNoz/signoz/pkg/telemetrystore"
+	"github.com/SigNoz/signoz/pkg/types/aiobservabilitytypes"
+	qbtypes "github.com/SigNoz/signoz/pkg/types/querybuildertypes/querybuildertypesv5"
 	"github.com/SigNoz/signoz/pkg/types/spantypes"
 	"github.com/SigNoz/signoz/pkg/types/telemetrytypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
 )
 
 const colServiceName = `resource_string_service$$$$name` // $ gets escaped so $$$$ converts to $$.
@@ -38,13 +45,21 @@ type spanDurationRow struct {
 
 type traceStore struct {
 	telemetryStore telemetrystore.TelemetryStore
+	metadataStore  telemetrytypes.MetadataStore
+	storage        qbtypes.Storage
+	flagger        flagger.Flagger
 }
 
-func NewTraceStore(ts telemetrystore.TelemetryStore) *traceStore {
-	return &traceStore{telemetryStore: ts}
+func NewTraceStore(ts telemetrystore.TelemetryStore, metadataStore telemetrytypes.MetadataStore, fl flagger.Flagger) *traceStore {
+	return &traceStore{
+		telemetryStore: ts,
+		metadataStore:  metadataStore,
+		storage:        tracestelemetryschema.NewStorage(),
+		flagger:        fl,
+	}
 }
 
-func (s *traceStore) GetTraceSummary(ctx context.Context, traceID string) (*spantypes.TraceSummary, error) {
+func (s *traceStore) GetTraceBounds(ctx context.Context, traceID string) (*spantypes.TraceBounds, error) {
 	sb := sqlbuilder.NewSelectBuilder()
 	sb.Select("trace_id", "min(start) AS start", "max(end) AS end", "sum(num_spans) AS num_spans")
 	sb.From(fmt.Sprintf("%s.%s", spantypes.TraceDB, spantypes.TraceSummaryTable))
@@ -52,20 +67,148 @@ func (s *traceStore) GetTraceSummary(ctx context.Context, traceID string) (*span
 	sb.GroupBy("trace_id")
 	query, args := sb.BuildWithFlavor(sqlbuilder.ClickHouse)
 
-	var summary spantypes.TraceSummary
+	var bounds spantypes.TraceBounds
 	err := s.telemetryStore.ClickhouseDB().QueryRow(ctx, query, args...).Scan(
-		&summary.TraceID, &summary.Start, &summary.End, &summary.NumSpans,
+		&bounds.TraceID, &bounds.Start, &bounds.End, &bounds.NumSpans,
 	)
 	if err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			return nil, spantypes.ErrTraceNotFound
 		}
-		return nil, errors.WrapInternalf(err, errors.CodeInternal, "error querying trace summary")
+		return nil, errors.WrapInternalf(err, errors.CodeInternal, "error querying trace bounds")
 	}
-	return &summary, nil
+	return &bounds, nil
 }
 
-func (s *traceStore) GetTraceSpans(ctx context.Context, traceID string, summary *spantypes.TraceSummary) ([]spantypes.StorableSpan, error) {
+func (s *traceStore) GetTraceStats(ctx context.Context, orgID valuer.UUID, traceID string, bounds *spantypes.TraceBounds) (*spantypes.TraceStats, error) {
+	table := fmt.Sprintf("%s.%s", spantypes.TraceDB, spantypes.TraceTable)
+	spans := sqlbuilder.NewSelectBuilder()
+
+	genAIColumns, err := s.genAISpanColumns(ctx, orgID, bounds, spans)
+	if err != nil {
+		return nil, err
+	}
+
+	// Spans whose parent is absent from the trace; these also count as roots and surface as "Missing Span".
+	ids := sqlbuilder.NewSelectBuilder()
+	ids.Select("span_id")
+	ids.From(table)
+	ids.Where(
+		ids.E("trace_id", traceID),
+		ids.GE("ts_bucket_start", bounds.Start.Unix()-1800),
+		ids.LE("ts_bucket_start", bounds.End.Unix()),
+	)
+	missingParent := fmt.Sprintf("parent_span_id <> '' AND parent_span_id GLOBAL NOT IN (%s)", spans.Var(ids))
+
+	spans.Select(
+		"toUnixTimestamp64Nano(timestamp) AS span_start_ns",
+		"span_start_ns + duration_nano AS span_end_ns",
+		"span_id",
+		"has_error",
+		"("+missingParent+") AS has_missing_parent",
+		"(parent_span_id = '' OR has_missing_parent) AS is_root",
+		"if(parent_span_id = '', name, 'Missing Span') AS root_name",
+		"if(parent_span_id = '', "+colServiceName+", '') AS root_service",
+		"if(parent_span_id = '', response_status_code, '') AS root_status_code",
+	)
+
+	spans.SelectMore(genAIColumns...)
+	spans.From(table)
+	spans.Where(
+		spans.E("trace_id", traceID),
+		spans.GE("ts_bucket_start", bounds.Start.Unix()-1800),
+		spans.LE("ts_bucket_start", bounds.End.Unix()),
+	)
+	// A span can be ingested more than once; keep one row per span_id.
+	spans.SQL("LIMIT 1 BY span_id")
+
+	sb := sqlbuilder.NewSelectBuilder()
+	sb.Select(
+		"toUInt64(min(span_start_ns)) AS start_ns",
+		"toUInt64(max(span_end_ns)) AS end_ns",
+		"count() AS total_spans",
+		"countIf(has_error) AS total_error_spans",
+		"countIf(has_missing_parent) > 0 AS has_missing_spans",
+		"argMinIf(root_service, (span_start_ns, root_name), is_root) AS root_service_name",
+		"argMinIf(root_name, (span_start_ns, root_name), is_root) AS root_entry_point",
+		"argMinIf(root_status_code, (span_start_ns, root_name), is_root) AS root_span_status_code",
+		"countIf(is_gen_ai) AS gen_ai_span_count",
+		"toUInt64(coalesce(sum(input_tokens_value), 0)) AS input_tokens",
+		"toUInt64(coalesce(sum(output_tokens_value), 0)) AS output_tokens",
+		"toUInt64(coalesce(sum(cache_read_tokens_value), 0)) AS cache_read_tokens",
+		"toUInt64(coalesce(sum(cache_write_tokens_value), 0)) AS cache_write_tokens",
+		"toUInt64(coalesce(sum(reasoning_tokens_value), 0)) AS reasoning_tokens",
+		"sum(total_cost_value) AS total_cost",
+	)
+	sb.From(sb.BuilderAs(spans, "spans"))
+	query, args := sb.BuildWithFlavor(sqlbuilder.ClickHouse)
+
+	var stats spantypes.TraceStats
+	err = s.telemetryStore.ClickhouseDB().QueryRow(ctx, query, args...).Scan(
+		&stats.StartNs, &stats.EndNs, &stats.TotalSpans, &stats.TotalErrorSpans, &stats.HasMissingSpans,
+		&stats.RootServiceName, &stats.RootEntryPoint, &stats.RootSpanStatusCode, &stats.GenAISpanCount,
+		&stats.Tokens.Input, &stats.Tokens.Output, &stats.Tokens.CacheRead, &stats.Tokens.CacheWrite, &stats.Tokens.Reasoning,
+		&stats.TotalCost,
+	)
+	if err != nil {
+		return nil, errors.WrapInternalf(err, errors.CodeInternal, "error querying trace stats")
+	}
+	return &stats, nil
+}
+
+// genAISpanColumns returns the gen_ai columns aggregated per span, resolved across attribute evolutions.
+func (s *traceStore) genAISpanColumns(ctx context.Context, orgID valuer.UUID, bounds *spantypes.TraceBounds, sb *sqlbuilder.SelectBuilder) ([]string, error) {
+	attributeKey := func(name string, dataType telemetrytypes.FieldDataType) *telemetrytypes.TelemetryFieldKey {
+		return &telemetrytypes.TelemetryFieldKey{Name: name, Signal: telemetrytypes.SignalTraces, FieldContext: telemetrytypes.FieldContextAttribute, FieldDataType: dataType}
+	}
+
+	values := []struct{ key, alias string }{
+		{aiobservabilitytypes.GenAIUsageInputTokens, "input_tokens_value"},
+		{aiobservabilitytypes.GenAIUsageOutputTokens, "output_tokens_value"},
+		{aiobservabilitytypes.GenAIUsageCacheReadInputTokens, "cache_read_tokens_value"},
+		{aiobservabilitytypes.GenAIUsageCacheCreationInputTokens, "cache_write_tokens_value"},
+		{aiobservabilitytypes.GenAIUsageReasoningOutputTokens, "reasoning_tokens_value"},
+		{aiobservabilitytypes.SignozGenAITotalCost, "total_cost_value"},
+	}
+
+	names := slices.Clone(aiobservabilitytypes.GenAISpanGateKeys)
+	for _, value := range values {
+		names = append(names, value.key)
+	}
+	selectors := make([]*telemetrytypes.FieldKeySelector, 0, len(names))
+	for _, name := range names {
+		selectors = append(selectors, &telemetrytypes.FieldKeySelector{Name: name, Signal: telemetrytypes.SignalTraces, FieldContext: telemetrytypes.FieldContextAttribute, SelectorMatchType: telemetrytypes.FieldSelectorMatchTypeExact})
+	}
+	keys, _, err := s.metadataStore.GetKeysMulti(ctx, orgID, querybuilder.ExpandKeySelectorsForFamilies(ctx, orgID, s.flagger, selectors))
+	if err != nil {
+		return nil, err
+	}
+
+	q := querybuilder.NewQueryInfo(ctx, orgID, s.flagger, telemetrytypes.SignalTraces, nil, uint64(bounds.Start.UnixNano()), uint64(bounds.End.UnixNano()))
+
+	gate := make([]string, 0, len(aiobservabilitytypes.GenAISpanGateKeys))
+	for _, name := range aiobservabilitytypes.GenAISpanGateKeys {
+		conds, _, err := querybuilder.Conditions(ctx, q, s.storage, attributeKey(name, telemetrytypes.FieldDataTypeString), qbtypes.FilterOperatorExists, nil, keys, false, sb)
+		if err != nil {
+			return nil, err
+		}
+		gate = append(gate, conds...)
+	}
+	columns := []string{sb.Or(gate...) + " AS is_gen_ai"}
+
+	for _, value := range values {
+		// lookup by number, the type metadata stores numeric attributes under; float64 is only the output cast
+		expr, err := querybuilder.ResolveColumn(ctx, q, s.storage, attributeKey(value.key, telemetrytypes.FieldDataTypeNumber), telemetrytypes.FieldDataTypeFloat64, keys)
+		if err != nil {
+			return nil, err
+		}
+		// a materialized column name carries `$$`, which Build would otherwise unescape
+		columns = append(columns, sqlbuilder.Escape(expr)+" AS "+value.alias)
+	}
+	return columns, nil
+}
+
+func (s *traceStore) GetTraceSpans(ctx context.Context, traceID string, bounds *spantypes.TraceBounds) ([]spantypes.StorableSpan, error) {
 	// DISTINCT ON (span_id) is ClickHouse-specific syntax not supported by sqlbuilder
 	query := fmt.Sprintf(`
 		SELECT DISTINCT ON (span_id)
@@ -85,8 +228,8 @@ func (s *traceStore) GetTraceSpans(ctx context.Context, traceID string, summary
 	err := s.telemetryStore.ClickhouseDB().Select(
 		ctx, &spanItems, query,
 		traceID,
-		summary.Start.Unix()-1800,
-		summary.End.Unix(),
+		bounds.Start.Unix()-1800,
+		bounds.End.Unix(),
 	)
 	if err != nil {
 		return nil, errors.WrapInternalf(err, errors.CodeInternal, "error querying trace spans")
@@ -196,7 +339,7 @@ func (s *traceStore) GetFlamegraphSpans(ctx context.Context, traceID string, sta
 	return spans, nil
 }
 
-func (s *traceStore) GetSpanCountByField(ctx context.Context, traceID string, summary *spantypes.TraceSummary, fieldKey telemetrytypes.TelemetryFieldKey) (map[string]uint64, error) {
+func (s *traceStore) GetSpanCountByField(ctx context.Context, traceID string, bounds *spantypes.TraceBounds, fieldKey telemetrytypes.TelemetryFieldKey) (map[string]uint64, error) {
 	fieldExpr, err := buildFieldExpr(fieldKey)
 	if err != nil {
 		return nil, err
@@ -206,8 +349,8 @@ func (s *traceStore) GetSpanCountByField(ctx context.Context, traceID string, su
 	sb.From(fmt.Sprintf("%s.%s", spantypes.TraceDB, spantypes.TraceTable))
 	sb.Where(
 		sb.E("trace_id", traceID),
-		sb.GE("ts_bucket_start", summary.Start.Unix()-1800),
-		sb.LE("ts_bucket_start", summary.End.Unix()),
+		sb.GE("ts_bucket_start", bounds.Start.Unix()-1800),
+		sb.LE("ts_bucket_start", bounds.End.Unix()),
 		"notEmpty("+fieldExpr+")",
 	)
 	sb.GroupBy("field_value")
@@ -224,7 +367,7 @@ func (s *traceStore) GetSpanCountByField(ctx context.Context, traceID string, su
 	return result, nil
 }
 
-func (s *traceStore) GetSpanDurationByField(ctx context.Context, traceID string, summary *spantypes.TraceSummary, fieldKey telemetrytypes.TelemetryFieldKey) (map[string]uint64, error) {
+func (s *traceStore) GetSpanDurationByField(ctx context.Context, traceID string, bounds *spantypes.TraceBounds, fieldKey telemetrytypes.TelemetryFieldKey) (map[string]uint64, error) {
 	fieldExpr, err := buildFieldExpr(fieldKey)
 	if err != nil {
 		return nil, err
@@ -240,8 +383,8 @@ func (s *traceStore) GetSpanDurationByField(ctx context.Context, traceID string,
 	allSpansSB.From(fmt.Sprintf("%s.%s", spantypes.TraceDB, spantypes.TraceTable))
 	allSpansSB.Where(
 		allSpansSB.E("trace_id", traceID),
-		allSpansSB.GE("ts_bucket_start", summary.Start.Unix()-1800),
-		allSpansSB.LE("ts_bucket_start", summary.End.Unix()),
+		allSpansSB.GE("ts_bucket_start", bounds.Start.Unix()-1800),
+		allSpansSB.LE("ts_bucket_start", bounds.End.Unix()),
 		"notEmpty(field_value)",
 	)
 	allSpansSB.OrderByAsc("timestamp")

pkg/modules/tracedetail/tracedetail.go

@@ -6,10 +6,12 @@ import (
 
 	"github.com/SigNoz/signoz/pkg/types/spantypes"
 	"github.com/SigNoz/signoz/pkg/types/telemetrytypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
 )
 
 // Handler exposes HTTP handlers for trace detail APIs.
 type Handler interface {
+	GetTraceSummary(http.ResponseWriter, *http.Request)
 	GetWaterfallV4(http.ResponseWriter, *http.Request)
 	GetTraceAggregations(http.ResponseWriter, *http.Request)
 	GetFlamegraph(http.ResponseWriter, *http.Request)
@@ -17,6 +19,7 @@ type Handler interface {
 
 // Module defines the business logic for trace detail operations.
 type Module interface {
+	GetTraceSummary(ctx context.Context, orgID valuer.UUID, traceID string) (*spantypes.TraceStats, error)
 	GetWaterfallV4(ctx context.Context, traceID string, selectedSpanID string, uncollapsedSpans []string) (*spantypes.GettableWaterfallTrace, error)
 	GetTraceAggregations(ctx context.Context, traceID string, req *spantypes.PostableTraceAggregations) (*spantypes.GettableTraceAggregations, error)
 	GetFlamegraph(ctx context.Context, traceID string, selectedSpanID string, selectFields []telemetrytypes.TelemetryFieldKey) (*spantypes.GettableFlamegraphTrace, error)

pkg/signoz/module.go

@@ -161,7 +161,7 @@ func NewModules(
 		LogsPipeline:         impllogspipeline.NewModule(sqlstore),
 		RuleStateHistory:     implrulestatehistory.NewModule(implrulestatehistory.NewStore(telemetryStore, telemetryMetadataStore, providerSettings.Logger), ruleStore),
 		CloudIntegration:     cloudIntegrationModule,
-		TraceDetail:          impltracedetail.NewModule(impltracedetail.NewTraceStore(telemetryStore), providerSettings, config.TraceDetail),
+		TraceDetail:          impltracedetail.NewModule(impltracedetail.NewTraceStore(telemetryStore, telemetryMetadataStore, fl), providerSettings, config.TraceDetail),
 		SpanMapper:           spanMapper,
 		LLMPricingRule:       impllmpricingrule.NewModule(impllmpricingrule.NewStore(sqlstore), querier),
 		Tag:                  tagModule,

pkg/telemetryschema/aitelemetryschema/const.go

@@ -15,11 +15,12 @@ var (
 		aiobservabilitytypes.GenAIAgentName:     genAIAttribute(aiobservabilitytypes.GenAIAgentName, telemetrytypes.FieldDataTypeString),
 		aiobservabilitytypes.GenAIProviderName:  genAIAttribute(aiobservabilitytypes.GenAIProviderName, telemetrytypes.FieldDataTypeString),
 
-		aiobservabilitytypes.GenAIUsageInputTokens:              genAIAttribute(aiobservabilitytypes.GenAIUsageInputTokens, telemetrytypes.FieldDataTypeFloat64),
-		aiobservabilitytypes.GenAIUsageOutputTokens:             genAIAttribute(aiobservabilitytypes.GenAIUsageOutputTokens, telemetrytypes.FieldDataTypeFloat64),
-		aiobservabilitytypes.GenAIUsageCacheReadInputTokens:     genAIAttribute(aiobservabilitytypes.GenAIUsageCacheReadInputTokens, telemetrytypes.FieldDataTypeFloat64),
-		aiobservabilitytypes.GenAIUsageCacheCreationInputTokens: genAIAttribute(aiobservabilitytypes.GenAIUsageCacheCreationInputTokens, telemetrytypes.FieldDataTypeFloat64),
-		aiobservabilitytypes.SignozGenAITotalCost:               genAIAttribute(aiobservabilitytypes.SignozGenAITotalCost, telemetrytypes.FieldDataTypeFloat64),
+		aiobservabilitytypes.GenAIUsageInputTokens:              genAIAttribute(aiobservabilitytypes.GenAIUsageInputTokens, telemetrytypes.FieldDataTypeNumber),
+		aiobservabilitytypes.GenAIUsageOutputTokens:             genAIAttribute(aiobservabilitytypes.GenAIUsageOutputTokens, telemetrytypes.FieldDataTypeNumber),
+		aiobservabilitytypes.GenAIUsageCacheReadInputTokens:     genAIAttribute(aiobservabilitytypes.GenAIUsageCacheReadInputTokens, telemetrytypes.FieldDataTypeNumber),
+		aiobservabilitytypes.GenAIUsageCacheCreationInputTokens: genAIAttribute(aiobservabilitytypes.GenAIUsageCacheCreationInputTokens, telemetrytypes.FieldDataTypeNumber),
+		aiobservabilitytypes.GenAIUsageReasoningOutputTokens:    genAIAttribute(aiobservabilitytypes.GenAIUsageReasoningOutputTokens, telemetrytypes.FieldDataTypeNumber),
+		aiobservabilitytypes.SignozGenAITotalCost:               genAIAttribute(aiobservabilitytypes.SignozGenAITotalCost, telemetrytypes.FieldDataTypeNumber),
 
 		aiobservabilitytypes.GenAIInputMessages:  genAIAttribute(aiobservabilitytypes.GenAIInputMessages, telemetrytypes.FieldDataTypeString),
 		aiobservabilitytypes.GenAIOutputMessages: genAIAttribute(aiobservabilitytypes.GenAIOutputMessages, telemetrytypes.FieldDataTypeString),

pkg/types/aiobservabilitytypes/keys.go

@@ -15,6 +15,7 @@ const (
 	GenAIUsageOutputTokens             = "gen_ai.usage.output_tokens"
 	GenAIUsageCacheReadInputTokens     = "gen_ai.usage.cache_read.input_tokens"
 	GenAIUsageCacheCreationInputTokens = "gen_ai.usage.cache_creation.input_tokens"
+	GenAIUsageReasoningOutputTokens    = "gen_ai.usage.reasoning.output_tokens"
 
 	GenAIInputMessages  = "gen_ai.input.messages"
 	GenAIOutputMessages = "gen_ai.output.messages"

pkg/types/spantypes/store.go

@@ -31,12 +31,13 @@ type SpanMapperStore interface {
 
 // TraceStore defines the data access interface for trace detail queries.
 type TraceStore interface {
-	GetTraceSummary(ctx context.Context, traceID string) (*TraceSummary, error)
-	GetTraceSpans(ctx context.Context, traceID string, summary *TraceSummary) ([]StorableSpan, error)
+	GetTraceBounds(ctx context.Context, traceID string) (*TraceBounds, error)
+	GetTraceStats(ctx context.Context, orgID valuer.UUID, traceID string, bounds *TraceBounds) (*TraceStats, error)
+	GetTraceSpans(ctx context.Context, traceID string, bounds *TraceBounds) ([]StorableSpan, error)
 	GetMinimalSpans(ctx context.Context, traceID string, start, end time.Time) ([]MinimalSpan, error)
 	GetTraceSpansByIDs(ctx context.Context, traceID string, start, end time.Time, spanIDs []string) ([]StorableSpan, error)
 	GetFlamegraphSpans(ctx context.Context, traceID string, start, end time.Time, spanIDs []string) ([]StorableSpan, error)
 
-	GetSpanCountByField(ctx context.Context, traceID string, summary *TraceSummary, fieldKey telemetrytypes.TelemetryFieldKey) (map[string]uint64, error)
-	GetSpanDurationByField(ctx context.Context, traceID string, summary *TraceSummary, fieldKey telemetrytypes.TelemetryFieldKey) (map[string]uint64, error)
+	GetSpanCountByField(ctx context.Context, traceID string, bounds *TraceBounds, fieldKey telemetrytypes.TelemetryFieldKey) (map[string]uint64, error)
+	GetSpanDurationByField(ctx context.Context, traceID string, bounds *TraceBounds, fieldKey telemetrytypes.TelemetryFieldKey) (map[string]uint64, error)
 }

pkg/types/spantypes/trace_summary.go

@@ -0,0 +1,62 @@
+package spantypes
+
+// TraceStats is the single-row result of the trace summary aggregate query.
+type TraceStats struct {
+	StartNs            uint64
+	EndNs              uint64
+	RootServiceName    string
+	RootEntryPoint     string
+	RootSpanStatusCode string
+	TotalSpans         uint64
+	TotalErrorSpans    uint64
+	HasMissingSpans    bool
+	GenAISpanCount     uint64
+	Tokens             TraceAITokens
+	TotalCost          *float64
+}
+
+// GettableTraceSummary is the response for the trace summary API; the trace-level
+// fields match the waterfall response.
+type GettableTraceSummary struct {
+	StartTimestampMillis  uint64          `json:"startTimestampMillis" required:"true"`
+	EndTimestampMillis    uint64          `json:"endTimestampMillis" required:"true"`
+	RootServiceName       string          `json:"rootServiceName" required:"true"`
+	RootServiceEntryPoint string          `json:"rootServiceEntryPoint" required:"true"`
+	RootSpanStatusCode    string          `json:"rootSpanStatusCode" required:"true"`
+	TotalSpansCount       uint64          `json:"totalSpansCount" required:"true"`
+	TotalErrorSpansCount  uint64          `json:"totalErrorSpansCount" required:"true"`
+	HasMissingSpans       bool            `json:"hasMissingSpans" required:"true"`
+	AI                    *TraceAISummary `json:"ai,omitempty"`
+}
+
+// TraceAISummary is present when any span carries a gen_ai gate key.
+type TraceAISummary struct {
+	Tokens TraceAITokens `json:"tokens" required:"true"`
+	// TotalCost is omitted when no span carries a cost attribute.
+	TotalCost *float64 `json:"totalCost,omitempty" nullable:"false"`
+}
+
+type TraceAITokens struct {
+	Input      uint64 `json:"input" required:"true"`
+	Output     uint64 `json:"output" required:"true"`
+	CacheRead  uint64 `json:"cacheRead" required:"true"`
+	CacheWrite uint64 `json:"cacheWrite" required:"true"`
+	Reasoning  uint64 `json:"reasoning" required:"true"`
+}
+
+func NewGettableTraceSummary(stats *TraceStats) *GettableTraceSummary {
+	summary := &GettableTraceSummary{
+		StartTimestampMillis:  stats.StartNs / 1_000_000,
+		EndTimestampMillis:    stats.EndNs / 1_000_000,
+		RootServiceName:       stats.RootServiceName,
+		RootServiceEntryPoint: stats.RootEntryPoint,
+		RootSpanStatusCode:    stats.RootSpanStatusCode,
+		TotalSpansCount:       stats.TotalSpans,
+		TotalErrorSpansCount:  stats.TotalErrorSpans,
+		HasMissingSpans:       stats.HasMissingSpans,
+	}
+	if stats.GenAISpanCount > 0 {
+		summary.AI = &TraceAISummary{Tokens: stats.Tokens, TotalCost: stats.TotalCost}
+	}
+	return summary
+}

pkg/types/spantypes/waterfall_trace.go

@@ -10,7 +10,7 @@ import (
 	"github.com/SigNoz/signoz/pkg/types/cachetypes"
 )
 
-type TraceSummary struct {
+type TraceBounds struct {
 	TraceID  string    `ch:"trace_id"`
 	Start    time.Time `ch:"start"`
 	End      time.Time `ch:"end"`

tests/fixtures/traces.py

@@ -895,6 +895,7 @@ _TRACES_TABLES_TO_TRUNCATE = [
     "span_attributes_keys",
     "signoz_error_index_v2",
     "top_level_operations",
+    "trace_summary",
 ]
 
 

tests/integration/tests/tracedetail/01_summary.py

@@ -0,0 +1,283 @@
+from collections.abc import Callable
+from datetime import UTC, datetime, timedelta
+from http import HTTPStatus
+
+import pytest
+import requests
+
+from fixtures import types
+from fixtures.auth import USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD
+from fixtures.querierai import root_span
+from fixtures.traces import TraceIdGenerator, Traces, TracesKind, TracesStatusCode
+
+WATERFALL_FIELDS = (
+    "startTimestampMillis",
+    "endTimestampMillis",
+    "rootServiceName",
+    "rootServiceEntryPoint",
+    "totalSpansCount",
+    "totalErrorSpansCount",
+    "hasMissingSpans",
+)
+
+
+@pytest.mark.parametrize("attribute_backend", ["map", "json"])
+def test_summary_ai_trace(
+    signoz: types.SigNoz,
+    create_user_admin: None,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+    insert_traces: Callable[[list[Traces]], None],
+    use_attribute_backend: Callable[[str], None],
+    attribute_backend: str,
+) -> None:
+    """The summary carries the waterfall's trace-level fields and, for a trace with gen_ai
+    spans, token totals over every LLM span and the cost summed over the spans that carry it.
+    Spans are written to one layout only, so a read from the wrong column sums to zero."""
+    use_attribute_backend(attribute_backend)
+    write_mode = "json_only" if attribute_backend == "json" else "legacy_only"
+    now = datetime.now(tz=UTC).replace(second=0, microsecond=0)
+    service = f"td-summary-{attribute_backend}"
+    resources = {"service.name": service}
+    trace_id = TraceIdGenerator.trace_id()
+    root_id = TraceIdGenerator.span_id()
+
+    insert_traces(
+        [
+            root_span(now=now, trace_id=trace_id, span_id=root_id, resources=resources, duration_s=4),
+            Traces(
+                timestamp=now - timedelta(seconds=4),
+                duration=timedelta(seconds=1),
+                trace_id=trace_id,
+                span_id=TraceIdGenerator.span_id(),
+                parent_span_id=root_id,
+                name="chat gpt-4o-mini",
+                kind=TracesKind.SPAN_KIND_CLIENT,
+                status_code=TracesStatusCode.STATUS_CODE_OK,
+                resources=resources,
+                attributes={
+                    "gen_ai.request.model": "gpt-4o-mini",
+                    "gen_ai.usage.input_tokens": 100,
+                    "gen_ai.usage.output_tokens": 20,
+                    "gen_ai.usage.cache_read.input_tokens": 7,
+                    "signoz.gen_ai.usage.tokens.cost": 0.01,
+                },
+                attribute_write_mode=write_mode,
+            ),
+            # a failed LLM call: counted in tokens and errors, but priced by nobody
+            Traces(
+                timestamp=now - timedelta(seconds=3),
+                duration=timedelta(seconds=0.5),
+                trace_id=trace_id,
+                span_id=TraceIdGenerator.span_id(),
+                parent_span_id=root_id,
+                name="chat gpt-4o-mini",
+                kind=TracesKind.SPAN_KIND_CLIENT,
+                status_code=TracesStatusCode.STATUS_CODE_ERROR,
+                resources=resources,
+                attributes={
+                    "gen_ai.request.model": "gpt-4o-mini",
+                    "gen_ai.usage.input_tokens": 50,
+                    "gen_ai.usage.output_tokens": 5,
+                },
+                attribute_write_mode=write_mode,
+            ),
+            Traces(
+                timestamp=now - timedelta(seconds=2),
+                duration=timedelta(seconds=0.5),
+                trace_id=trace_id,
+                span_id=TraceIdGenerator.span_id(),
+                parent_span_id=root_id,
+                name="execute_tool",
+                kind=TracesKind.SPAN_KIND_INTERNAL,
+                status_code=TracesStatusCode.STATUS_CODE_OK,
+                resources=resources,
+                attributes={"gen_ai.tool.name": "get_weather"},
+                attribute_write_mode=write_mode,
+            ),
+        ]
+    )
+
+    token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+    headers = {"authorization": f"Bearer {token}", "content-type": "application/json"}
+
+    summary = requests.get(signoz.self.host_configs["8080"].get(f"/api/v1/traces/{trace_id}/summary"), timeout=10, headers=headers)
+    assert summary.status_code == HTTPStatus.OK, summary.text
+    summary = summary.json()["data"]
+
+    waterfall = requests.post(
+        signoz.self.host_configs["8080"].get(f"/api/v4/traces/{trace_id}/waterfall"),
+        timeout=10,
+        headers=headers,
+        json={"selectedSpanId": "", "uncollapsedSpans": []},
+    )
+    assert waterfall.status_code == HTTPStatus.OK, waterfall.text
+    waterfall = waterfall.json()["data"]
+
+    assert {k: summary[k] for k in WATERFALL_FIELDS} == {k: waterfall[k] for k in WATERFALL_FIELDS}
+    assert summary["rootServiceName"] == service
+    assert summary["rootServiceEntryPoint"] == "POST /api/chat"
+    assert summary["totalSpansCount"] == 4
+    assert summary["totalErrorSpansCount"] == 1
+    assert summary["hasMissingSpans"] is False
+
+    assert summary["ai"]["tokens"] == {"input": 150, "output": 25, "cacheRead": 7, "cacheWrite": 0, "reasoning": 0}
+    assert summary["ai"]["totalCost"] == pytest.approx(0.01)
+
+
+def test_summary_ai_trace_across_json_rollout(
+    signoz: types.SigNoz,
+    create_user_admin: None,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+    insert_traces: Callable[[list[Traces]], None],
+    seed_attribute_evolution: Callable[[str, datetime], None],
+) -> None:
+    """A trace that straddles the attribute JSON rollout has LLM spans written only to the legacy
+    maps before it and to the JSON column after it. The summary window covers both, so the gen_ai
+    reads must fall back across columns and sum every span."""
+    now = datetime.now(tz=UTC).replace(second=0, microsecond=0)
+    rollout = now - timedelta(minutes=30)
+    seed_attribute_evolution("traces", rollout)
+
+    service = "td-summary-rollout"
+    resources = {"service.name": service}
+    trace_id = TraceIdGenerator.trace_id()
+    root_id = TraceIdGenerator.span_id()
+
+    insert_traces(
+        [
+            Traces(
+                timestamp=rollout - timedelta(minutes=10),
+                duration=timedelta(minutes=15),
+                trace_id=trace_id,
+                span_id=root_id,
+                parent_span_id="",
+                name="long agent run",
+                kind=TracesKind.SPAN_KIND_SERVER,
+                status_code=TracesStatusCode.STATUS_CODE_OK,
+                resources=resources,
+                attributes={"http.response.status_code": 200},
+                attribute_write_mode="legacy_only",
+            ),
+            Traces(
+                timestamp=rollout - timedelta(minutes=5),
+                duration=timedelta(seconds=1),
+                trace_id=trace_id,
+                span_id=TraceIdGenerator.span_id(),
+                parent_span_id=root_id,
+                name="chat gpt-4o-mini",
+                kind=TracesKind.SPAN_KIND_CLIENT,
+                status_code=TracesStatusCode.STATUS_CODE_OK,
+                resources=resources,
+                attributes={"gen_ai.request.model": "gpt-4o-mini", "gen_ai.usage.input_tokens": 100, "gen_ai.usage.output_tokens": 20, "signoz.gen_ai.usage.tokens.cost": 0.01},
+                attribute_write_mode="legacy_only",
+            ),
+            Traces(
+                timestamp=rollout + timedelta(minutes=4),
+                duration=timedelta(seconds=1),
+                trace_id=trace_id,
+                span_id=TraceIdGenerator.span_id(),
+                parent_span_id=root_id,
+                name="chat gpt-4o-mini",
+                kind=TracesKind.SPAN_KIND_CLIENT,
+                status_code=TracesStatusCode.STATUS_CODE_OK,
+                resources=resources,
+                attributes={"gen_ai.request.model": "gpt-4o-mini", "gen_ai.usage.input_tokens": 50, "gen_ai.usage.output_tokens": 5, "signoz.gen_ai.usage.tokens.cost": 0.02},
+                attribute_write_mode="json_only",
+            ),
+        ]
+    )
+
+    token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+    summary = requests.get(
+        signoz.self.host_configs["8080"].get(f"/api/v1/traces/{trace_id}/summary"),
+        timeout=10,
+        headers={"authorization": f"Bearer {token}"},
+    )
+    assert summary.status_code == HTTPStatus.OK, summary.text
+    summary = summary.json()["data"]
+
+    assert summary["totalSpansCount"] == 3
+    assert summary["rootServiceEntryPoint"] == "long agent run"
+    assert summary["rootSpanStatusCode"] == "200"
+    assert summary["ai"]["tokens"] == {"input": 150, "output": 25, "cacheRead": 0, "cacheWrite": 0, "reasoning": 0}
+    assert summary["ai"]["totalCost"] == pytest.approx(0.03)
+
+
+def test_summary_non_ai_trace_with_missing_root(
+    signoz: types.SigNoz,
+    create_user_admin: None,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+    insert_traces: Callable[[list[Traces]], None],
+) -> None:
+    """A trace whose recorded spans all hang off an unrecorded parent reports the synthetic
+    "Missing Span" root exactly as the waterfall does, and a trace without gen_ai spans has
+    no `ai` block."""
+    now = datetime.now(tz=UTC).replace(second=0, microsecond=0)
+    resources = {"service.name": "td-summary-orphan"}
+    trace_id = TraceIdGenerator.trace_id()
+    missing_parent_id = TraceIdGenerator.span_id()
+
+    insert_traces(
+        [
+            Traces(
+                timestamp=now - timedelta(seconds=5),
+                duration=timedelta(seconds=2),
+                trace_id=trace_id,
+                span_id=TraceIdGenerator.span_id(),
+                parent_span_id=missing_parent_id,
+                name="SELECT users",
+                kind=TracesKind.SPAN_KIND_CLIENT,
+                status_code=TracesStatusCode.STATUS_CODE_OK,
+                resources=resources,
+            ),
+            Traces(
+                timestamp=now - timedelta(seconds=4),
+                duration=timedelta(seconds=1),
+                trace_id=trace_id,
+                span_id=TraceIdGenerator.span_id(),
+                parent_span_id=missing_parent_id,
+                name="publish event",
+                kind=TracesKind.SPAN_KIND_PRODUCER,
+                status_code=TracesStatusCode.STATUS_CODE_OK,
+                resources=resources,
+            ),
+        ]
+    )
+
+    token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+    headers = {"authorization": f"Bearer {token}", "content-type": "application/json"}
+
+    summary = requests.get(signoz.self.host_configs["8080"].get(f"/api/v1/traces/{trace_id}/summary"), timeout=10, headers=headers)
+    assert summary.status_code == HTTPStatus.OK, summary.text
+    summary = summary.json()["data"]
+
+    waterfall = requests.post(
+        signoz.self.host_configs["8080"].get(f"/api/v4/traces/{trace_id}/waterfall"),
+        timeout=10,
+        headers=headers,
+        json={"selectedSpanId": "", "uncollapsedSpans": []},
+    )
+    assert waterfall.status_code == HTTPStatus.OK, waterfall.text
+    waterfall = waterfall.json()["data"]
+
+    assert {k: summary[k] for k in WATERFALL_FIELDS} == {k: waterfall[k] for k in WATERFALL_FIELDS}
+    assert summary["hasMissingSpans"] is True
+    assert summary["rootServiceName"] == ""
+    assert summary["rootServiceEntryPoint"] == "Missing Span"
+    assert summary["rootSpanStatusCode"] == ""
+    assert summary["totalSpansCount"] == 2
+    assert "ai" not in summary
+
+
+def test_summary_unknown_trace(
+    signoz: types.SigNoz,
+    create_user_admin: None,  # pylint: disable=unused-argument
+    get_token: Callable[[str, str], str],
+) -> None:
+    token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
+    response = requests.get(
+        signoz.self.host_configs["8080"].get(f"/api/v1/traces/{TraceIdGenerator.trace_id()}/summary"),
+        timeout=10,
+        headers={"authorization": f"Bearer {token}"},
+    )
+    assert response.status_code == HTTPStatus.NOT_FOUND, response.text

tests/integration/tests/tracedetail/conftest.py

@@ -0,0 +1,30 @@
+import pytest
+from testcontainers.core.container import Network
+
+from fixtures import types
+from fixtures.signoz import create_signoz
+
+
+@pytest.fixture(name="signoz", scope="package")
+def signoz_trace_attributes_json(
+    network: Network,
+    zeus: types.TestContainerDocker,
+    gateway: types.TestContainerDocker,
+    sqlstore: types.TestContainerSQL,
+    clickhouse: types.TestContainerClickhouse,
+    request: pytest.FixtureRequest,
+    pytestconfig: pytest.Config,
+) -> types.SigNoz:
+    return create_signoz(
+        network=network,
+        zeus=zeus,
+        gateway=gateway,
+        sqlstore=sqlstore,
+        clickhouse=clickhouse,
+        request=request,
+        pytestconfig=pytestconfig,
+        cache_key="signoz-trace-attributes-json",
+        env_overrides={
+            "SIGNOZ_FLAGGER_CONFIG_BOOLEAN_USE__TRACE__ATTRIBUTES__JSON": True,
+        },
+    )