Indeed, these are bad news.
Particularly, what worries me about is gpt-4o-mini-tts-2025-03-20, which has not been fixed, and the replacement doesn’t make any sense at all. What does realtime has to do with tts?
There have been complaints about the newer snapshot gpt-4o-mini-tts-2025-12-15 not properly following instructions, in which cases the older model is still necessary:
- TTS no longer follows instructions parameter
- TTS with a question... the audio back has the answer
- Audio Quality Decrease in Gpt-4o-mini-tts - #5 by Neoony
- Gpt-4o-mini-tts-2025-12-15 still truncates final sentences; 2025-03-20 is being deprecated
- Truncated Scentences for TTS API, missing in generated audio