diff --git a/web/src/pages/Playground/index.jsx b/web/src/pages/Playground/index.jsx
index 465012e..6811b21 100644
--- a/web/src/pages/Playground/index.jsx
+++ b/web/src/pages/Playground/index.jsx
@@ -591,7 +591,10 @@ const Playground = () => {
     const modelParam = searchParams.get('model');
     const modelTypeParam = searchParams.get('model_type');
     if (modelTypeParam) {
-      handleInputChange('model_type', modelTypeParam);
+      const v = Number(modelTypeParam);
+      if (!Number.isNaN(v)) {
+        handleInputChange('model_type', v);
+      }
     }
     if (modelParam) {
       handleInputChange('model', modelParam);