claude-opus-5-5-fast shutdown date (Azure AI Foundry)

Facts

API: Azure AI Foundry *.services.ai.azure.com
Model: claude-opus-5-5-fast
Kind: Model retirement
Takes effect: January 15, 2027
Calls after that day: Fail
Source: Deprecations page
Last updated: October 28, 2026
Verified: October 29, 2026, against Azure AI Foundry's own pages

Questions

When does claude-opus-5-5-fast shut down?

Calls to the model claude-opus-5-5-fast on Azure AI Foundry stop working on January 15, 2027.

What happens to calls after January 15, 2027?

They fail from that day.

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.

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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 January 15, 2027.

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