gpt-5.4-cyber

gpt-5.4-cyber (OpenAI) was shut down on Oct 1, 2026; calls to it fail. OpenAI recommends The most capable cyber model available to you. instead.

Provider

OpenAI

Shutdown

Oct 1, 2026 (already shut down)

Announced

Sep 11, 2026

Replace with

The most capable cyber model available to you.

Source: https://developers.openai.com/api/docs/deprecations · report a wrong date