diff --git a/references/ai-chat/src/trigger/chat.ts b/references/ai-chat/src/trigger/chat.ts
index ed9304282..765a23297 100644
--- a/references/ai-chat/src/trigger/chat.ts
+++ b/references/ai-chat/src/trigger/chat.ts
@@ -400,6 +400,7 @@ export const aiChat = chat.task({
       },
       experimental_telemetry: {
         isEnabled: true,
+        metadata: clientData?.userId ? { userId: clientData.userId } : undefined,
       },
     });
   },