default to parakeet model as it is much faster

utils/stt.py

@@ -141,7 +141,7 @@ class ASRFactory:
     """Factory for creating ASR model instances"""
     
     @staticmethod
-    def get_model(model_name="whisper"):
+    def get_model(model_name="parakeet"):
         """
         Get ASR model by name
         Args:
@@ -158,7 +158,7 @@ class ASRFactory:
             return WhisperModel()
 
 
-def transcribe_audio(audio_path, model_name="whisper"):
+def transcribe_audio(audio_path, model_name="parakeet"):
     """
     Convert audio file to text using specified ASR model
     Args: