Update app.py

app.py

@@ -7,7 +7,7 @@ from pydantic import BaseModel, Field
 import gradio as gr
 
 # ---------------- CONFIG ----------------
-MODEL_ID = os.getenv("MODEL_ID", "mistralai/Mistral-7B-Instruct-v0.1")
+MODEL_ID = os.getenv("MODEL_ID", "HuggingFaceH4/zephyr-7b-beta")
 HF_TOKEN = os.getenv("HF_TOKEN")  # must be set in Space secrets
 
 API_URL = f"https://api-inference.huggingface.co/models/{MODEL_ID}"