OpenAI · First-party API · LLM

gpt-5.2-codex

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

Provider-recommended replacement: gpt-5.6-sol

3 notices

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-5.2-codex | gpt-5.6-sol |

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Capability change

Capability change announced Feb 3, 2026

OpenAI documents a capability change: “Feb 3 Update · Model: gpt-5.2 · Model: gpt-5.2-codex We have optimized our inference stack for API customers and GPT-5.2 and GPT-5.2-Codex now run ~40% faster.”

Hosting route
First-party API
Affected scope
Not stated in the notice
Announced
Feb 3, 2026
First seen by ModelClock
Oct 3, 2026

What the provider published

developers.openai.com ↗

Feb 3

Update · Model: gpt-5.2 · Model: gpt-5.2-codex

We have optimized our inference stack for API customers and GPT-5.2 and GPT-5.2-Codex now run ~40% faster. Model and model weights are unchanged.

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Release announced

Released on Jan 14, 2026

OpenAI announced this model on 2026-01-14. API: v1/responses.

Hosting route
First-party API
Affected scope
API: v1/responses
Announced
Jan 14, 2026
First seen by ModelClock
Oct 3, 2026

What the provider published

developers.openai.com ↗

Released gpt-5.2-codex to the Responses API.

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Same model elsewhere

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