diff --git a/src/vs/workbench/contrib/chat/browser/agentSessions/agentSessionsViewer.ts b/src/vs/workbench/contrib/chat/browser/agentSessions/agentSessionsViewer.ts
index a57689d4c99..46185e866ab 100644
--- a/src/vs/workbench/contrib/chat/browser/agentSessions/agentSessionsViewer.ts
+++ b/src/vs/workbench/contrib/chat/browser/agentSessions/agentSessionsViewer.ts
@@ -573,6 +573,7 @@ export function toStatusLabel(status: AgentSessionStatus): string {
 interface IAgentSessionSectionTemplate {
 	readonly container: HTMLElement;
 	readonly label: HTMLSpanElement;
+	readonly count: HTMLSpanElement;
 	readonly toolbar: MenuWorkbenchToolBar;
 	readonly contextKeyService: IContextKeyService;
 	readonly disposables: IDisposable;
@@ -596,6 +597,7 @@ export class AgentSessionSectionRenderer implements ICompressibleTreeRenderer<IA
 			'div.agent-session-section@container',
 			[
 				h('span.agent-session-section-label@label'),
+				h('span.agent-session-section-count@count'),
 				h('div.agent-session-section-toolbar@toolbar')
 			]
 		);
@@ -611,6 +613,7 @@ export class AgentSessionSectionRenderer implements ICompressibleTreeRenderer<IA
 		return {
 			container: elements.container,
 			label: elements.label,
+			count: elements.count,
 			toolbar,
 			contextKeyService,
 			disposables
@@ -622,6 +625,9 @@ export class AgentSessionSectionRenderer implements ICompressibleTreeRenderer<IA
 		// Label
 		template.label.textContent = element.element.label;
 
+		// Count
+		template.count.textContent = String(element.element.sessions.length);
+
 		// Toolbar
 		ChatContextKeys.agentSessionSection.bindTo(template.contextKeyService).set(element.element.section);
 		template.toolbar.context = element.element;
@@ -691,7 +697,7 @@ export class AgentSessionsAccessibilityProvider implements IListAccessibilityPro
 
 	getAriaLabel(element: AgentSessionListItem): string | null {
 		if (isAgentSessionSection(element)) {
-			return localize('agentSessionSectionAriaLabel', "{0} sessions section", element.label);
+			return localize('agentSessionSectionAriaLabel', "{0} sessions section, {1} sessions", element.label, element.sessions.length);
 		}
 
 		return localize('agentSessionItemAriaLabel', "{0} session {1} ({2}), created {3}", element.providerLabel, element.label, toStatusLabel(element.status), new Date(element.timing.created).toLocaleString());
diff --git a/src/vs/workbench/contrib/chat/browser/agentSessions/media/agentsessionsviewer.css b/src/vs/workbench/contrib/chat/browser/agentSessions/media/agentsessionsviewer.css
index 7b7361103e7..3e28c11d54f 100644
--- a/src/vs/workbench/contrib/chat/browser/agentSessions/media/agentsessionsviewer.css
+++ b/src/vs/workbench/contrib/chat/browser/agentSessions/media/agentsessionsviewer.css
@@ -318,6 +318,11 @@
 			flex: 1;
 		}
 
+		.agent-session-section-count {
+			opacity: 0.7;
+			margin-right: 4px;
+		}
+
 		.agent-session-section-toolbar {
 			/* for the absolute positioning of the toolbar below */
 			position: relative;
@@ -332,6 +337,11 @@
 		}
 	}
 
+	.monaco-list-row:hover .agent-session-section .agent-session-section-count,
+	.monaco-list-row.focused:not(.selected) .agent-session-section .agent-session-section-count {
+		display: none;
+	}
+
 	.monaco-list-row:hover .agent-session-section .agent-session-section-toolbar,
 	.monaco-list-row.focused:not(.selected) .agent-session-section .agent-session-section-toolbar {
 		width: 22px;