OpenAI
gpt-5.4-cyber
☠ Dead
Yes. gpt-5.4-cyber was shut down on October 1, 2026. Requests to it fail.
Recommended replacement: the most capable cyber model available to you
Source: OpenAI deprecation page.
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Paste a file or a public GitHub repo URL into the scanner. It finds every model ID that is dead or dying, with the file and line, in your browser.
Scan my code for gpt-5.4-cyber and the rest →
Or one line in a terminal or in CI (fails if a dead ID is found): curl -sL https://lira-ia.github.io/model-check/check.py | python3 - . · GitHub Action