diff --git a/frontend/src/components/tasks/TaskDetailsDialog.tsx b/frontend/src/components/tasks/TaskDetailsDialog.tsx
index dcab90e3..a71c58f5 100644
--- a/frontend/src/components/tasks/TaskDetailsDialog.tsx
+++ b/frontend/src/components/tasks/TaskDetailsDialog.tsx
@@ -73,7 +73,7 @@ export function TaskDetailsDialog({
     TaskAttemptActivity[]
   >([]);
   const [activitiesLoading, setActivitiesLoading] = useState(false);
-  const [selectedExecutor, setSelectedExecutor] = useState<string>("echo");
+  const [selectedExecutor, setSelectedExecutor] = useState<string>("claude");
   const [creatingAttempt, setCreatingAttempt] = useState(false);
   const [stoppingAttempt, setStoppingAttempt] = useState(false);
 
diff --git a/frontend/src/pages/task-details.tsx b/frontend/src/pages/task-details.tsx
index 7454609c..bc19f7cc 100644
--- a/frontend/src/pages/task-details.tsx
+++ b/frontend/src/pages/task-details.tsx
@@ -64,7 +64,7 @@ export function TaskDetailsPage() {
     TaskAttemptActivity[]
   >([]);
   const [activitiesLoading, setActivitiesLoading] = useState(false);
-  const [selectedExecutor, setSelectedExecutor] = useState<string>("echo");
+  const [selectedExecutor, setSelectedExecutor] = useState<string>("claude");
   const [creatingAttempt, setCreatingAttempt] = useState(false);
   const [stoppingAttempt, setStoppingAttempt] = useState(false);
   const [error, setError] = useState<string | null>(null);