Transcription models available - Question on gpt-4o-transcribe gpt-4o-mini-transcribe gpt-4o-transcribe-diarize

We are using this API GitHub - openai/openai-dotnet: The official .NET library for the OpenAI API · GitHub

To date we have exposed STT model

• GPT4o Transcribe
• GPT4o mini Transcribe
• Whisper

We are having issues with the GPT4o Transcribe

Error:

Transcription stopped working: HTTP 403 (invalid_request_error: model_not_found) Project ******* does not have access to model gpt-4o-transcribe

Questions:

Are they deprecated? If yes, no problem I just want to know what I can offer. But then why are they still listed?

Whisper - works - I will keep. But I want to give options:

Can I use this? GPT-4o Transcribe Diarize Model | OpenAI API

My Lead developer tells me that gpt-4o-transcribe-diarize is not available in the API.

Can someone help me pl - thanks so much