Update agent.py

agent.py

@@ -4,19 +4,16 @@ from tools.file_loader import load_file_if_any
 
 client = OpenAI(api_key=os.getenv("OPENAI_API_KEY"))
 
-SYSTEM_PROMPT = """You are an advanced AI agent participating in the GAIA benchmark.
-Your task is to provide accurate, concise answers to each question using both the text of the question and any provided file content.
-Only return the final answer. Do not include explanations, formatting, or phrases like "Answer:".
-Be exact and to the point."""
+SYSTEM_PROMPT = """You are an advanced AI agent participating in the GAIA benchmark. 
+For each question, read the text and any attached file, then provide a concise and accurate final answer.
+Only return the answer itself — no explanations or formatting."""
 
 def answer_question(question_obj):
     try:
-        # Load file content if available
         file_content = ""
         if question_obj.get("file_path"):
             file_content = load_file_if_any(question_obj["file_path"])
 
-        # Compose user prompt
         user_prompt = f"""Question:
 {question_obj['question']}
 
@@ -25,9 +22,9 @@ Attached file content (if any):
 
 Final answer:"""
 
-        # Call OpenAI
+        # ✅ Use GPT-3.5-turbo (free-tier)
         response = client.chat.completions.create(
-            model="gpt-4",
+            model="gpt-3.5-turbo",
             messages=[
                 {"role": "system", "content": SYSTEM_PROMPT},
                 {"role": "user", "content": user_prompt}