Update app.py

app.py

@@ -48,7 +48,7 @@ def load_models():
         # Load model for evaluation
         models['evaluator'] = pipeline(
             "text2text-generation", 
-            model="deepseek-ai/DeepSeek-R1-Distill-Qwen-1.5B",
+            model="Qwen/Qwen2.5-0.5B-Instruct",
             max_length=300
         )