Update app.py

app.py

@@ -660,8 +660,8 @@ class MentorEvaluator:
                 logger.info("Attempting to initialize Whisper model...")
                 # First try to initialize model with downloading allowed
                 self._whisper_model = WhisperModel(
-                    "medium",
-                    device="cpu",
+                    "small",
+                    device="small",
                     compute_type="int8",
                     download_root=self.model_cache_dir,
                     local_files_only=False  # Allow downloading if needed