Azure AI Foundry
o1 model retirement
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On November 19, 2026, the model o1 will be retired. Calls to model o1 will fail after this date. Version 2024-12-17 is marked as deprecated under the service lifecycle.
What to use instead of o1
Move to gpt-5.6-sol, which Microsoft recommends as the replacement.
In Azure AI Foundry's words
Model: o1; Version: 2024-12-17; Lifecycle: Deprecated; Retirement date: 2026-11-19; Replacement: gpt-5.6-sol
Facts
- API
- Azure AI Foundry
*.services.ai.azure.com - Model
o1- Released
- December 5, 2024 (models.dev)
- Kind
- Model retirement
- Takes effect
- November 19, 2026
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
- Verified
- , against Azure AI Foundry's own pages
Questions
When does o1 shut down?
Calls to the model o1 on Azure AI Foundry stop working on November 19, 2026.
What happens to calls after November 19, 2026?
They fail from that day.
When was o1 released?
o1 was released on December 5, 2024, according to models.dev.
How do I find the calls this hits in my code?
Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.
o1 on other APIs 2
-
OpenAI
o1Model retirement Stopped working -
No date
Azure OpenAI
o1Model retirement Deprecated, no date
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Is your code calling this?
Okapi finds the calls this change hits in your repo and opens the pull request with the fix before November 19, 2026.