# gpt-5.4-cyber — Deprecated — shutdown Oct 1, 2026

For gpt-5.4-cyber, provider is OpenAI; lifecycle status is Deprecated; deprecation announced is 2026-09-11; shutdown / retirement date is Oct 1, 2026; recommended replacement is gpt-5.6-cyber, recorded from its source on 2026-09-14.

- **Provider:** OpenAI _(our reading, not quoted from the source)_
- **Model ID / API name:** gpt-5.4-cyber _(verified: appears in the quote below)_
- **Lifecycle status:** Deprecated _(verified: appears in the quote below)_
- **Deprecation announced:** 2026-09-11 _(verified: appears in its own passage below)_
- **Shutdown / retirement date:** Oct 1, 2026 _(verified: appears in the quote below)_
- **Recommended replacement:** gpt-5.6-cyber _(verified: appears in the quote below)_

## What the source says

> The gpt-5.4-cyber model is deprecated and will be removed from the API on October 1, 2026. Migrate to gpt-5.6-cyber before the shutdown date. Shutdown date | Model / system | Recommended replacement | Oct 1, 2026 | gpt-5.4-cyber | gpt-5.6-cyber |

## Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

### Deprecation announced

> 2026-09-11: GPT-5.4-Cyber

## Source

- https://platform.openai.com/docs/deprecations

Last verified: 2026-09-14. Review by: 2026-10-14.
Part of [AI model deprecation and retirement dates by provider](https://referencesource.org/ai-model-deprecation-and-retirement/).