OpenAI · Model retirement
tts-1-hd
Stops working (in 76 days)
Calls to the model tts-1-hd on OpenAI stop working on January 6, 2027.
What to use instead of tts-1-hd
Move to gpt-realtime-2.1-mini, recommended by OpenAI.
gpt-realtime-2.1-mini is not served on /v1/audio/speech: it runs only on the Realtime API (/v1/realtime, over WebRTC or WebSocket). Audio comes back as base64 chunks in response.output_audio.delta events (for example audio/pcm at 24 kHz), not as an mp3 or wav response body.
Facts
- API
- OpenAI
api.openai.com - Model
tts-1-hd- Kind
- Model retirement
- Takes effect
- January 6, 2027
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
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