Update app.py

app.py

@@ -22,7 +22,7 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
 from tools import ocr_image_tool, parse_excel_tool, web_search_tool, run_tools, audio_transcriber_tool, wikipedia_search_tool
 
-llm = ChatOpenAI(model_name="gpt-4o-mini")
+llm = ChatOpenAI(model_name="gpt-4.1")
 
 # ─── 1) plan_node ───
 # ─── 1) plan_node ───