Update agent.py

agent.py

@@ -162,7 +162,7 @@ with open("system_prompt.txt", "r", encoding="utf-8") as f:
 sys_msg = SystemMessage(content=system_prompt)
 
 # Build graph function
-def build_graph(provider: str = "google"):
+def build_graph(provider: str = "groq"):
     """Build the graph"""
     # Load environment variables from .env file
     if provider == "google":