diff --git a/codex-reply/action.yml b/codex-reply/action.yml
index 30895ea..e6870b4 100644
--- a/codex-reply/action.yml
+++ b/codex-reply/action.yml
@@ -33,7 +33,7 @@ inputs:
   model:
     description: Modello AI in formato provider/model.
     required: false
-    default: "opencode-go/deepseek-v4-flash"
+    default: "opencode-go/big-pickle"
 
 runs:
   using: composite