Update app.py

app.py

@@ -149,8 +149,8 @@ class BasicAgent:
  
         # InferenceClient diretto — usa la Serverless Inference API HF
         self.client = InferenceClient(
-            model="Qwen/Qwen2.5-72B-Instruct",
-            token=os.getenv("HF_TOKEN"),
+            provider="sambanova",          # gratuito, non usa il router a pagamento
+            api_key=os.getenv("HF_TOKEN"),
         )
  
         # Schema OpenAI dei tool per passarli al client
@@ -205,6 +205,7 @@ class BasicAgent:
         hf_messages = self._messages_to_hf_format([sys_msg] + state["messages"])
  
         response = self.client.chat_completion(
+            model="meta-llama/Llama-3.3-70B-Instruct", 
             messages=hf_messages,
             tools=self.tools_schema,
             tool_choice="auto",