gpt-5.1-codex-max

gpt-5.1-codex-max (OpenAI) was shut down on Jul 23, 2026; calls to it fail. OpenAI recommends gpt-5.6-sol instead.

Provider

OpenAI

Shutdown

Jul 23, 2026 (already shut down)

Announced

Apr 22, 2026

Replace with

gpt-5.6-sol

Source: https://developers.openai.com/api/docs/deprecations · report a wrong date