gpt-audio-2025-08-28 shutdown date: Jan 20, 2027 (OpenAI)

The error you get from January 20, 2027

What OpenAI answers a call to gpt-audio-2025-08-28 once the model is gone, as recorded from real responses:

HTTP 404

{"error":{"message":"The model `gpt-audio-2025-08-28` has been deprecated, learn more here: https://platform.openai.com/docs/deprecations","type":"invalid_request_error","param":null,"code":"model_not_found"}}

Facts

API: OpenAI api.openai.com
Model: gpt-audio-2025-08-28
Kind: Model retirement
Takes effect: January 20, 2027
Calls after that day: Fail
Source: Deprecations page
Last updated: November 4, 2026
Verified: November 6, 2026, against OpenAI's own pages

Questions

When does gpt-audio-2025-08-28 shut down?

Calls to the model gpt-audio-2025-08-28 on OpenAI stop working on January 20, 2027.

What happens to calls after January 20, 2027?

They fail from that day.

What error does gpt-audio-2025-08-28 return once it is shut down?

OpenAI answers HTTP 404: "The model `gpt-audio-2025-08-28` has been deprecated, learn more here: https://platform.openai.com/docs/deprecations". Send another model to fix it.

How do I find the calls this hits in my code?

Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.

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OpenAI gpt-audio-2025-08-28 model retirement

The error you get from January 20, 2027

What to use instead of gpt-audio-2025-08-28

In OpenAI's words