diff --git a/veadk/models/ark_llm.py b/veadk/models/ark_llm.py
index c1eba85a..1fff3e0a 100644
--- a/veadk/models/ark_llm.py
+++ b/veadk/models/ark_llm.py
@@ -97,7 +97,7 @@
     "extra_query",
     "extra_body",
     "timeout",
-    "reasoning"
+    "reasoning",
     # auth params
     "api_key",
     "api_base",