claude-mythos-preview shutdown date (Azure AI Foundry)

In Azure AI Foundry's words

Model: claude-mythos-preview (gated research preview); Version: —; Lifecycle: Preview; Retirement date: 2027-04-02; Replacement: —

Azure AI Foundry, Deprecations page

Facts

API: Azure AI Foundry *.services.ai.azure.com
Model: claude-mythos-preview
Kind: Model retirement
Takes effect: April 2, 2027
Calls after that day: Fail
Source: Deprecations page
Last updated: November 4, 2026
Verified: November 6, 2026, against Azure AI Foundry's own pages

Questions

When does claude-mythos-preview shut down?

Calls to the model claude-mythos-preview on Azure AI Foundry stop working on April 2, 2027.

What happens to calls after April 2, 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 April 2, 2027.

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Azure AI Foundry claude-mythos-preview model retirement