# gpt-5.4-cyber

Calls to the model gpt-5.4-cyber on OpenAI stopped working on October 1, 2026.

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 OpenAI returns once gpt-5.4-cyber is gone

HTTP 404

```json
{"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

Switch to the most capable cyber model available to you as recommended by OpenAI.

- API: OpenAI (api.openai.com)
- Model: gpt-5.4-cyber
- Kind: Model retirement
- Takes effect: October 1, 2026
- Calls after that day: fail
- Calls it hits: `model gpt-5.4-cyber`
- Source: [Deprecations page](https://developers.openai.com/api/docs/deprecations)
- Verified: November 6, 2026, against OpenAI's own pages
- Page: https://www.okapi.bot/models/openai/gpt-5.4-cyber/

## OpenAI's words

> Shutdown date: Oct 1, 2026; Model / system: gpt-5.4-cyber; Recommended replacement: The most capable cyber model available to you.

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent