diff --git a/src/app/api/v2/ai/admin/agent/sessions/route.ts b/src/app/api/v2/ai/admin/agent/sessions/route.ts
index acfc6390..6601661f 100644
--- a/src/app/api/v2/ai/admin/agent/sessions/route.ts
+++ b/src/app/api/v2/ai/admin/agent/sessions/route.ts
@@ -31,6 +31,7 @@ import AgentAdminService from 'server/services/agent/AdminService';
  *       user or assistant message. Empty sessions and system-event-only sessions are excluded.
  *       Sessions remain visible while waiting for an assistant response to a user's first message.
  *       Results can be filtered by status, repository, user, and build UUID.
+ *       Sessions are sorted newest first by creation time.
  *     tags:
  *       - Agent Admin
  *     operationId: getAdminAgentSessions
diff --git a/src/server/services/agent/AdminService.ts b/src/server/services/agent/AdminService.ts
index 990c983f..19949c7d 100644
--- a/src/server/services/agent/AdminService.ts
+++ b/src/server/services/agent/AdminService.ts
@@ -287,7 +287,7 @@ export default class AgentAdminService {
       });
     }
 
-    const sessions = await query.orderBy('updatedAt', 'desc').orderBy('createdAt', 'desc');
+    const sessions = await query.orderBy('createdAt', 'desc').orderBy('id', 'desc');
     const sessionDbIdByUuid = new Map(sessions.map((session) => [session.uuid, session.id]));
     const enrichedSessions = await AgentSessionService.enrichSessions(sessions);
 
diff --git a/src/server/services/agent/__tests__/AdminService.test.ts b/src/server/services/agent/__tests__/AdminService.test.ts
index 783d91c0..0b3e93e3 100644
--- a/src/server/services/agent/__tests__/AdminService.test.ts
+++ b/src/server/services/agent/__tests__/AdminService.test.ts
@@ -426,6 +426,8 @@ describe('AgentAdminService.listSessions', () => {
 
     const result = await AgentAdminService.listSessions({});
 
+    expect(sessionQueryBuilder.orderBy).toHaveBeenNthCalledWith(1, 'createdAt', 'desc');
+    expect(sessionQueryBuilder.orderBy).toHaveBeenNthCalledWith(2, 'id', 'desc');
     expect(threadWhereIn).toHaveBeenCalledWith('sessionId', [101, 202]);
     expect(pendingWhereIn).toHaveBeenCalledWith('thread.sessionId', [101, 202]);
     expect(result.data).toEqual([