Update agent_simple.py

agent_simple.py

@@ -74,7 +74,7 @@ class GroqRateLimiter:
 class GroqWrapper:
     """Wrapper for direct Groq API with rate limiting and error handling"""
     
-    def __init__(self, model: str = "llama-3.1-70b-versatile", 
+    def __init__(self, model: str = "qwen/qwen3-32b", 
                  rpm: int = 30, tpm: int = 6000):
         self.client = Groq(api_key=os.getenv("GROQ_API_KEY"))
         self.model = model
@@ -244,7 +244,7 @@ tools = [
     arxiv_search,
 ]
 
-def build_graph(provider: str = "direct_groq", model: str = "llama-3.1-70b-versatile"):
+def build_graph(provider: str = "direct_groq", model: str = "qwen/qwen3-32b"):
     """Build the graph with direct Groq API and custom rate limiting"""
     
     if provider == "direct_groq":