diff --git a/apps/code/src/renderer/features/task-detail/components/TaskInput.tsx b/apps/code/src/renderer/features/task-detail/components/TaskInput.tsx
index b6e3fb96c..c0662a69c 100644
--- a/apps/code/src/renderer/features/task-detail/components/TaskInput.tsx
+++ b/apps/code/src/renderer/features/task-detail/components/TaskInput.tsx
@@ -96,6 +96,7 @@ export function TaskInput({
     defaultInitialTaskMode,
     lastUsedInitialTaskMode,
     setLastUsedReasoningEffort,
+    setLastUsedModel,
   } = useSettingsStore();
 
   const editorRef = useRef<EditorHandle>(null);
@@ -493,9 +494,10 @@ export function TaskInput({
     (value: string) => {
       if (modelOption) {
         setConfigOption(modelOption.id, value);
+        setLastUsedModel(value);
       }
     },
-    [modelOption, setConfigOption],
+    [modelOption, setConfigOption, setLastUsedModel],
   );
 
   const handleThoughtChange = useCallback(
diff --git a/apps/code/src/renderer/features/task-detail/hooks/usePreviewConfig.ts b/apps/code/src/renderer/features/task-detail/hooks/usePreviewConfig.ts
index 94a6dfbe7..4dbd1abf7 100644
--- a/apps/code/src/renderer/features/task-detail/hooks/usePreviewConfig.ts
+++ b/apps/code/src/renderer/features/task-detail/hooks/usePreviewConfig.ts
@@ -111,6 +111,7 @@ export function usePreviewConfig(
           lastUsedInitialTaskMode,
           defaultReasoningEffort,
           lastUsedReasoningEffort,
+          lastUsedModel,
         } = useSettingsStore.getState();
 
         // Use the mode option's existing currentValue (set by the server
@@ -186,7 +187,20 @@ export function usePreviewConfig(
           return opt;
         });
 
-        setConfigOptions(withEffort);
+        const withModel = withEffort.map((opt) => {
+          if (opt.category !== "model" || opt.type !== "select") return opt;
+          if (!lastUsedModel) return opt;
+          const validValues = flattenValues(
+            opt.options as Array<{
+              value?: string;
+              options?: Array<{ value: string }>;
+            }>,
+          );
+          if (!validValues.includes(lastUsedModel)) return opt;
+          return { ...opt, currentValue: lastUsedModel } as SessionConfigOption;
+        });
+
+        setConfigOptions(withModel);
         setIsLoading(false);
       })
       .catch((error) => {