OpenAI
o1
☠ Dead
Yes. o1 was shut down on October 23, 2026. Requests to it fail.
Recommended replacement: gpt-5.6-sol
Source: OpenAI deprecation page.
Is it still in your code?
Paste a file or a public GitHub repo URL into the scanner. It finds every model ID that is dead or dying, with the file and line, in your browser.
Scan my code for o1 and the rest →
Or one line in a terminal or in CI (fails if a dead ID is found): curl -sL https://lira-ia.github.io/model-check/check.py | python3 - . · GitHub Action