Obituaries · OpenAI
gpt-5.1-codex, ?–2026
Retired by OpenAI
OpenAI has confirmed the retirement of gpt-5.1-codex, effective July 23, 2026. It wrote code that other people then took credit for. Code that still calls it will find out the hard way.
Its work passes to gpt-5.6-sol, which the family describes as 'recommended'.
| Model ID | gpt-5.1-codex |
|---|---|
| Provider | OpenAI deprecations page |
| Shut down | July 23, 2026 |
| Successor | gpt-5.6-sol |
In lieu of flowers
Replace the string. Search your code for gpt-5.1-codex and swap it for gpt-5.6-sol, 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-5-1-codex on Model Graveyard Check