Obituaries · OpenAI
gpt-5.4-cyber, ?–2026
Retired by OpenAI
OpenAI has confirmed the retirement of gpt-5.4-cyber, effective October 1, 2026. It answered questions, wrote emails and was blamed for both. Code that still calls it will find out the hard way.
Survived by the most capable cyber model available to you, younger, cheaper, and named in the same documentation table.
| Model ID | gpt-5.4-cyber |
|---|---|
| Provider | OpenAI deprecations page |
| Shut down | October 1, 2026 |
| Successor | the most capable cyber model available to you |
In lieu of flowers
Replace the string. Search your code for gpt-5.4-cyber and swap it for the most capable cyber model available to you, or paste a repo into Model Graveyard Check to find every dead model at once.
Want to say something to it? Leave a letter on the farewell wall.
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Technical notice, with a code scanner: gpt-5-4-cyber on Model Graveyard Check