Update app.py

app.py

@@ -14,7 +14,7 @@ import spaces  # Import spaces early to enable ZeroGPU support
 cancel_event = threading.Event()
 
 MODELS = {
-    "MedGemma": {"repo_id": "TsinghuaC3I/Llama-3.1-8B-UltraMedical", "description": "Med Gemma for medical chat."}
+    "MedGemma": {"repo_id": "unsloth/medgemma-27b-text-it", "description": "Med Gemma for medical chat."}
 }
 
 # Global cache for pipelines to avoid re-loading.