### Answer
I don't have information about the exact models used for transcription for Deepgram, Azure, and Soniox in the available sources. The documentation mentions that Retell AI supports custom STT configuration and various transcription providers [(1) ](
) , but doesn't specify which exact models from Deepgram, Azure, or Soniox are used.
For more detailed information about STT provider configurations, you might want to:
- Visit [Documentation](
)
- Visit [Hire certified Retell partner](
)
Would you like a general answer based on my knowledge instead?