Update app.py

app.py

@@ -22,7 +22,7 @@ For more details, please check [our post](https://huggingface.co/blog/llama32).
 access_token = os.getenv('HF_TOKEN')
 # Download the Base model
 #model_id = "./models/Llama-32-3B-Instruct"
-model_id = "01-ai/Yi-1.5-9B"
+model_id = "princeton-nlp/gemma-2-9b-it-SimPO"
 MAX_MAX_NEW_TOKENS = 2048
 DEFAULT_MAX_NEW_TOKENS = 1024
 MAX_INPUT_TOKEN_LENGTH = int(os.getenv("MAX_INPUT_TOKEN_LENGTH", "4096"))