Update app.py

app.py

@@ -36,7 +36,8 @@ models = {
         "mistralai/Mistral-Nemo-Instruct-2407",
         "tiiuae/falcon-7b-instruct",
         "nvidia/Llama-3.1-Nemotron-70B-Instruct-HF",
-        "google/gemma-3-4b-it"
+        "google/gemma-3-4b-it",
+        "HuggingFaceH4/starchat2-15b-v0.1"
     ]
 }