OpenAI · model
o1-pro-2025-03-19 deprecation: shutdown date & replacement
Shuts down in 27 days (October 23, 2026)
- Provider
- OpenAI
- Type
- model
- Announced
- Shutdown
- Replacement
gpt-5.6-sol- Source
- Official OpenAI notice
Replacement with reasoning.mode: pro.
How to migrate off o1-pro-2025-03-19
- Find every place that references it:
grep -rn --exclude-dir={node_modules,.git,dist} "o1-pro-2025-03-19" . - Replace the model ID:
- model: "o1-pro-2025-03-19" + model: "gpt-5.6-sol" - Re-run your evals or a sample of real prompts — output style, token usage and pricing can change between models.
- Check config outside code too: environment variables, feature flags, prompt-management tools, and fine-tuned model references.
- Deploy before October 23, 2026, and add the CI scanner so it cannot come back.
Also shutting down on October 23, 2026 (OpenAI)
ft-babbage-002ft-davinci-002ft-gpt-3.5-turboft-gpt-4ft-gpt-4.1-nano-2025-04-14ft-o4-mini-2025-04-16gpt-3.5-turbo-0125gpt-4-0613gpt-4-turbogpt-4.1-nanogpt-4o-2024-05-13gpt-image-1o1-2024-12-17o3-mini-2025-01-31o4-mini-2025-04-16
Questions
Is o1-pro-2025-03-19 deprecated?
Yes. OpenAI has deprecated o1-pro-2025-03-19. It shuts down on October 23, 2026.
When does o1-pro-2025-03-19 shut down?
October 23, 2026, according to OpenAI's official deprecation notice.
What should I use instead of o1-pro-2025-03-19?
OpenAI recommends gpt-5.6-sol. Switch the model ID and re-test your prompts, since outputs, pricing and limits can differ.
What happens to requests to o1-pro-2025-03-19 after the shutdown?
Requests using the retired model ID fail with an error, so any code still calling it breaks. Update and deploy before the shutdown date.