Update app.py

app.py

@@ -63,7 +63,8 @@ from langchain_huggingface import HuggingFaceEndpoint, ChatHuggingFace
 # 1. Use a model that has high availability in the 2026 Provider network
 # Llama-3.1-8B-Instruct is currently a 'gold standard' for this router
 # repo_id = "meta-llama/Llama-3.1-8B-Instruct"
-repo_id = "Qwen/Qwen2.5-7B-Instruct"
+# repo_id = "Qwen/Qwen2.5-7B-Instruct"
+repo_id = "google/gemma-2-2b-it"
 
 llm = HuggingFaceEndpoint(
     repo_id=repo_id,