Update app.py

app.py

@@ -37,7 +37,7 @@ def load_models():
         models['summarizer'] = pipeline("summarization", model="facebook/bart-large-cnn", max_length=130)
         
         # Load Phi-4 model for evaluation
-        models['evaluator'] = pipeline("text-generation", model="microsoft/Phi-4-mini-instruct", max_new_tokens=150)
+        models['evaluator'] = pipeline("text-generation", model="TinyLlama/TinyLlama-1.1B-Chat-v1.0", max_new_tokens=150)
         
         return models