Update app.py

app.py

@@ -134,10 +134,10 @@ def respond_with_enhanced_streaming(message, history):
             system_message="You are EduBot, an expert AI learning assistant. Provide comprehensive, educational responses that help students truly understand concepts."
         )
         
-        # Use the Together provider with text_generation
+        # Use the Together provider with the simplest recommended model
         response = client.text_generation(
             formatted_prompt,
-            model="meta-llama/Meta-Llama-3.1-8B-Instruct",
+            model="Qwen/Qwen2.5-7B-Instruct",
             max_new_tokens=1024,
             temperature=0.7,
             top_p=0.9,