AI EngineerGuide

GPT-4o mini TTS retirement date: January 6, 2027

gpt-4o-mini-tts shuts down on January 6, 2027 (announced Oct 1, 2026).

63 days left until Jan 6, 2027deprecated
Provider
OpenAI
Model IDs affected
gpt-4o-mini-tts, gpt-4o-mini-tts-2025-03-20, gpt-4o-mini-tts-2025-12-15
Announced
October 1, 2026
Shutdown date
January 6, 2027
Replacement
gpt-realtime-2.1-mini
Platforms
Dates apply to the OpenAI API. Fine-tuned models follow the same shutdown schedule as their base model. If you use OpenAI models through another platform, check that platform's own retirement schedule.
Source
Official OpenAI deprecations page (data last changed 2026-11-02, re-checked daily)
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Migrating from GPT-4o mini TTS

Not yet reviewed. We haven't written model-specific migration notes for GPT-4o mini TTS yet. Start with the provider's official guidance and the replacement's model page, and use this general checklist:

  • Search your code, config and environment variables for gpt-4o-mini-tts, gpt-4o-mini-tts-2025-03-20, gpt-4o-mini-tts-2025-12-15.
  • Re-run your evaluation set against gpt-realtime-2.1-mini before switching traffic.
  • Recount tokens with the new model's tokenizer and re-check max_tokens, context fit and cost.
  • Check tool calling, structured output and stop sequences on your real prompts.
  • Dates apply to the OpenAI API. Fine-tuned models follow the same shutdown schedule as their base model. If you use OpenAI models through another platform, check that platform's own retirement schedule.

Check your code before Jan 6

Lint a requestPaste an API request and see every field that will return a 400 on the new model, with a fixed request. Find every gpt-4o-mini-tts in your codePaste code, config or an n8n workflow to list each retiring model ID by line.

Also shutting down on January 6, 2027

All model retirements · All OpenAI deprecations

FAQ

When will GPT-4o mini TTS be retired?

GPT-4o mini TTS (gpt-4o-mini-tts) shuts down on the OpenAI API on January 6, 2027, according to the official OpenAI API deprecations page.

What should I use instead of gpt-4o-mini-tts?

The recommended replacement is gpt-realtime-2.1-mini.

What happens to gpt-4o-mini-tts requests after the shutdown date?

After a model is retired, API requests to it return an error. Move traffic to the replacement and test it on your own prompts before the date.

Does this date apply to Amazon Bedrock, Vertex AI or Azure?

Dates apply to the OpenAI API. Fine-tuned models follow the same shutdown schedule as their base model. If you use OpenAI models through another platform, check that platform’s own retirement schedule.

Which model IDs are affected?

All of these: gpt-4o-mini-tts, gpt-4o-mini-tts-2025-03-20, gpt-4o-mini-tts-2025-12-15.

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