Update app.py

app.py

@@ -2,23 +2,23 @@ import os
 import json
 import requests
 import gradio as gr
-from langchain_openai import ChatOpenAI
+from langchain.chat_models import ChatOpenAI
 from langchain.prompts import ChatPromptTemplate
 
 API_URL = "https://agents-course-unit4-scoring.hf.space"
 
-# --- SIMPLE AGENT USING LCEL ---
+
+# --- AGENT DE BASE (LCEL) ---
 def build_agent():
     prompt = ChatPromptTemplate.from_messages([
-        ("system", 
-         "You are an expert reasoning model. "
-         "You must answer ONLY with the final answer. "
-         "No explanation. No steps."),
+        ("system",
+         "You are a precise reasoning AI. "
+         "You answer ONLY the final answer, no explanations."),
         ("user", "{question}")
     ])
 
     llm = ChatOpenAI(
-        model="gpt-4o-mini", 
+        model_name="gpt-4o-mini",
         temperature=0
     )