Azure AI Foundry
claude-opus-5-5-fast model retirement
Stops workingSubscribe to Azure AI FoundryShare
Calls to the model claude-opus-5-5-fast on Azure AI Foundry stop working on January 15, 2027.
In Azure AI Foundry's words
Model: claude-opus-5-5-fast; Version: 2; Lifecycle: GA; Retirement date: 2027-01-15; Replacement: —
Facts
- API
- Azure AI Foundry
*.services.ai.azure.com - Model
claude-opus-5-5-fast- Released
- September 22, 2026 (models.dev)
- Kind
- Model retirement
- Takes effect
- January 15, 2027
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
- Verified
- , 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.
When was claude-opus-5-5-fast released?
claude-opus-5-5-fast was released on September 22, 2026, 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.
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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.