Update app.py

app.py

@@ -29,7 +29,7 @@ from tools import (
 )
 
 # ─────────────────────────── Configuration ───────────────────────────────
-LLM = ChatOpenAI(model_name="gpt-4o-mini", temperature=0.0)
+LLM = ChatOpenAI(model_name="gpt-4.1", temperature=0.0)
 MAX_TOOL_CALLS = 5
 
 # ─────────────────────────── Helper utilities ────────────────────────────