adding function calling compatible model

agents.py

@@ -17,8 +17,9 @@ gemini_model = LiteLLMModel(
     api_key=gemini_api_key,
 )
 model = OpenAIServerModel(
-    model_id='deepseek/deepseek-r1-0528-qwen3-8b:free',
-    api_base='https://openrouter.ai/api/v1',
+    #model_id='deepseek/deepseek-r1-0528-qwen3-8b:free',
+    # model_id="thudm/glm-4-32b:free"  function calling
+    model_id="google/gemini-2.0-flash-exp:free", # function calling support
     api_key=open_router_api_key,
 )