ModelClock
OpenAI · First-party API · LLM

gpt-5.1-codex

Shut downShut down on Jul 23, 2026Published date has passed

Provider-recommended replacement: gpt-5.6-sol

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Notice

Shut downPublished date has passed

Shut down on Jul 23, 2026

OpenAI lists July 23, 2026 as the shutdown date. Listed model identifier.

Hosting route
First-party API
Affected scope
Listed model identifier
Replacement
gpt-5.6-sol
Announced
Apr 22, 2026
First seen by ModelClock
Oct 3, 2026

What the provider published

developers.openai.com ↗

| July 23, 2026 | gpt-5.1-codex | gpt-5.6-sol |

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Same model elsewhere

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