Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1

Official Claude incident record with affected components, status, timeline updates, and links back to relevant status checks.

Affected components

These are the official Claude components attached to this incident. Component data can help separate a web app issue from an API, Console, or Claude Code issue.

claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork

Official timeline

Updates are shown from the official Claude status incident record.

resolved

The issue affecting Claude services has been resolved. Impact occurred from 13:57 to 14:20 UTC

monitoring

A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

monitoring

A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring for recovery.

identified

We have identified the cause of elevated errors on requests to Claude Mythos 5.1 and Claude Fable 5.1 and are working on a fix. We will provide an update as soon as possible.

investigating

We are investigating elevated errors on requests to Claude Fable 5.1 and Claude Mythos 5.1. We will provide an update as soon as possible.