How to enable gpt-4o-transcribe-diarize for realtime transcription?

I got the same in realtime, “Your organization does not have access.”

From selecting the -diarize model right in the audio “playground”, as expected from the API reference, although this is low value to transcribe one side of a “chat” without a list of speakers and their audio samples.

Yes, I do have access and have used “diarize” with reference speakers on the audio/transcriptions API.