diff --git a/packages/ui/src/features/canvas/components/ThreadPanel.tsx b/packages/ui/src/features/canvas/components/ThreadPanel.tsx
index 4cd1b38221..78a3760d85 100644
--- a/packages/ui/src/features/canvas/components/ThreadPanel.tsx
+++ b/packages/ui/src/features/canvas/components/ThreadPanel.tsx
@@ -135,6 +135,7 @@ export function ThreadPanel({
   onClose,
   collapsed,
   onToggleCollapsed,
+  showTaskTitle = true,
 }: {
   taskId: string;
   /** The thread's task when the caller already has it; fetched otherwise. */
@@ -142,6 +143,11 @@ export function ThreadPanel({
   onClose?: () => void;
   collapsed?: boolean;
   onToggleCollapsed?: () => void;
+  /**
+   * Show the task title under the "Thread" heading. Hidden in the task detail
+   * view, where the TaskDetail header already names the task.
+   */
+  showTaskTitle?: boolean;
 }) {
   const client = useOptionalAuthenticatedClient();
   const { data: currentUser } = useCurrentUser({ client });
@@ -240,7 +246,7 @@ export function ThreadPanel({
           <Text size="2" weight="medium" className="block">
             Thread
           </Text>
-          {task && (
+          {showTaskTitle && task && (
             <Text size="1" className="block truncate text-muted-foreground">
               {task.title || "Untitled task"}
             </Text>
diff --git a/packages/ui/src/features/canvas/components/ThreadSidebar.tsx b/packages/ui/src/features/canvas/components/ThreadSidebar.tsx
index 211248318f..fb4d7703dd 100644
--- a/packages/ui/src/features/canvas/components/ThreadSidebar.tsx
+++ b/packages/ui/src/features/canvas/components/ThreadSidebar.tsx
@@ -14,11 +14,14 @@ export function ThreadSidebar({
   taskId,
   task,
   onClose,
+  showTaskTitle,
 }: {
   taskId: string;
   /** The thread's task when the caller already has it; fetched otherwise. */
   task?: Task;
   onClose?: () => void;
+  /** Forwarded to ThreadPanel; hidden in the task detail view. */
+  showTaskTitle?: boolean;
 }) {
   const collapsed = useThreadPanelStore((s) => s.collapsed);
   const width = useThreadPanelStore((s) => s.width);
@@ -60,6 +63,7 @@ export function ThreadSidebar({
         task={task}
         onClose={onClose}
         onToggleCollapsed={() => toggleCollapsed(true)}
+        showTaskTitle={showTaskTitle}
       />
     </ResizableSidebar>
   );
diff --git a/packages/ui/src/router/routes/website/$channelId/tasks/$taskId.tsx b/packages/ui/src/router/routes/website/$channelId/tasks/$taskId.tsx
index 80488d9cf0..636d36a766 100644
--- a/packages/ui/src/router/routes/website/$channelId/tasks/$taskId.tsx
+++ b/packages/ui/src/router/routes/website/$channelId/tasks/$taskId.tsx
@@ -68,7 +68,7 @@ function ChannelTaskDetailRoute() {
           channelId={channelId}
         />
       </div>
-      <ThreadSidebar taskId={taskId} task={task} />
+      <ThreadSidebar taskId={taskId} task={task} showTaskTitle={false} />
     </div>
   );
 }