OpenAI
gpt-5.4-cyber model retirement
Stopped workingSubscribe to OpenAIShare
OpenAI retired model gpt-5.4-cyber on October 1, 2026. Calls to model gpt-5.4-cyber fail since that date. The model is no longer available to serve API requests.
The error you get
What OpenAI answers a call to gpt-5.4-cyber once the model is gone, as recorded from real responses:
{"error":{"message":"The model `gpt-5.4-cyber` has been deprecated, learn more here: https://platform.openai.com/docs/deprecations","type":"invalid_request_error","param":null,"code":"model_not_found"}}What to use instead of gpt-5.4-cyber
Switch to the most capable cyber model available to you as recommended by OpenAI.
In OpenAI's words
Shutdown date: Oct 1, 2026; Model / system: gpt-5.4-cyber; Recommended replacement: The most capable cyber model available to you.
Facts
- API
- OpenAI
api.openai.com - Model
gpt-5.4-cyber- Kind
- Model retirement
- Takes effect
- October 1, 2026
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
- Verified
- , against OpenAI's own pages
Questions
When does gpt-5.4-cyber shut down?
Calls to the model gpt-5.4-cyber on OpenAI stopped working on October 1, 2026.
What happens to calls after October 1, 2026?
They have failed since October 1, 2026.
What error does gpt-5.4-cyber return once it is shut down?
OpenAI answers HTTP 404: "The model `gpt-5.4-cyber` 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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You fixed this one by hand.
Okapi opens the pull request with the fix before the next breaking change reaches your code.