Update app.py

app.py

@@ -68,7 +68,7 @@ def perform_rag(repo_data, prompt):
                 return None
 
             # Perform generation using OpenAI
-            llm = OpenAI(api_key=openai_api_key, model="gpt-4", temperature=0.7, max_tokens=500)
+            llm = OpenAI(api_key=openai_api_key, model="gpt-4o-mini", temperature=0.7, max_tokens=500)
             question_with_context = f"Context: {text}\n\nQuestion: {prompt}\n\nAnswer:"
             response = llm.generate(question_with_context)
 
@@ -83,7 +83,7 @@ def perform_rag(repo_data, prompt):
 
 # Streamlit application
 def main():
-    st.title("Chat with GitHub Repository \ud83d\udcac")
+    st.title("Chat with GitHub Repository")
     st.caption("This app allows you to chat with a GitHub Repo using OpenAI and ChromaDB")
 
     # Get the GitHub token from the user