OPENAI · MODEL
gpt-5.4-cyber was shut down on 1 October 2026
SHUT DOWN1 October 2026
SINCE16 days ago
REPLACE WITHThe most capable cyber model available to you.
Announced in: 2026-09-11: GPT-5.4-Cyber.
OpenAI lists 1 October 2026 as the date it shut down for gpt-5.4-cyber, with The most capable cyber model available to you. as the recommended replacement. Source: OpenAI's official deprecations page, checked 17 October 2026. Read the official page.
Checked against the official page on 17 October 2026 at 06:08 UTC