Azure AI Foundry
claude-opus-4-1 model retirement
Stopped working
On August 5, 2026, Azure AI Foundry will retire model claude-opus-4-1. Calls targeting this model will fail after that date. Ensure your applications transition off this model before the retirement takes effect.
What to use instead of claude-opus-4-1
Migrate to claude-opus-5, which stops working on July 8, 2027. No permanent replacement has been named yet.
Facts
- API
- Azure AI Foundry
*.services.ai.azure.com - Model
claude-opus-4-1- Kind
- Model retirement
- Takes effect
- August 5, 2026
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
- Verified
- , against Azure AI Foundry's own pages
Questions
When does claude-opus-4-1 shut down?
Calls to the model claude-opus-4-1 on Azure AI Foundry stopped working on August 5, 2026.
What happens to calls after August 5, 2026?
They have failed since August 5, 2026.
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.
claude-opus-4-1 on other APIs 2
-
Anthropic
claude-opus-4-1Model retirement Stopped working -
No date
OpenCode
claude-opus-4-1Model retirement Deprecated, no date
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You fixed this one by hand.
Okapi opens the pull request with the fix before the next breaking change reaches your code.