o1-pro-2025-03-19

o1-pro-2025-03-19 (OpenAI) was shut down on Oct 23, 2026; calls to it fail. OpenAI recommends gpt-5.6-sol (reasoning.mode: pro) instead.

Provider

OpenAI

Shutdown

Oct 23, 2026 (already shut down)

Announced

Apr 22, 2026

Replace with

gpt-5.6-sol (reasoning.mode: pro)

Also written as

o1-pro

• Listed under 'Upcoming deprecations' on the page although the shutdown date is today/past.

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