Update app.py

app.py

@@ -16,7 +16,7 @@ from langchain_core.messages import HumanMessage
 # --- Constants ---
 DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
-def openrouter_inference(prompt, model="deepseek-ai/deepseek-coder-6.7b-instruct"):
+def openrouter_inference(prompt, model="deepseek/deepseek-r1-0528-qwen3-8b:free"):
     api_key = os.environ["OPENROUTER_API_KEY"]
     url = "https://openrouter.ai/api/v1/chat/completions"
     headers = {