ModelClock
OpenAI · First-party API · LLM

gpt-5.1

Shutdown scheduledShuts down on Apr 1, 2027179 days left

Provider-recommended replacement: gpt-6-sol

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Notice

Shutdown scheduled179 days left

Shuts down on Apr 1, 2027

OpenAI lists Apr 1, 2027 as the shutdown date. Listed model identifier.

Hosting route
First-party API
Affected scope
Listed model identifier
Replacement
gpt-6-sol
Announced
Oct 1, 2026
First seen by ModelClock
Oct 3, 2026

What the provider published

developers.openai.com ↗

| Apr 1, 2027 | gpt-5.1 | gpt-6-sol |

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Same model elsewhere

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