diff --git a/studio/frontend/src/components/assistant-ui/thread.tsx b/studio/frontend/src/components/assistant-ui/thread.tsx
index 8776d5d6d6..0326b90a97 100644
--- a/studio/frontend/src/components/assistant-ui/thread.tsx
+++ b/studio/frontend/src/components/assistant-ui/thread.tsx
@@ -996,6 +996,24 @@ const GeneratingIndicator: FC = () => {
   return <span className="text-sm text-muted-foreground">Generating...</span>;
 };
 
+// Placeholder when stop fires before any visible content (e.g. mid-think).
+const CancelledIndicator: FC = () => {
+  const show = useAuiState(
+    ({ message }) =>
+      message.content.length === 0 &&
+      message.status?.type === "incomplete" &&
+      message.status?.reason === "cancelled",
+  );
+  if (!show) {
+    return null;
+  }
+  return (
+    <span className="aui-cancelled-indicator text-sm italic text-muted-foreground">
+      Cancelled.
+    </span>
+  );
+};
+
 const AssistantMessage: FC = () => {
   return (
     <MessagePrimitive.Root
@@ -1004,6 +1022,7 @@ const AssistantMessage: FC = () => {
     >
       <div className="aui-assistant-message-content wrap-break-word min-w-0 text-[#0d0d0d] dark:text-foreground leading-relaxed">
         <GeneratingIndicator />
+        <CancelledIndicator />
         <MessagePrimitive.Parts
           components={{
             Text: MarkdownText,