Update app.py

app.py

@@ -75,7 +75,7 @@ def chat_with_model(message, history, context):
                 "Content-Type": "application/json"
             },
             json={
-                "model": "deepseek-ai/DeepSeek-OCR ",
+                "model": "Qwen/Qwen3-VL-8B-Instruct:novita",
                 "messages": conversation
             }
         )