Claude (Anthropic) Status

← Claude (Anthropic)

Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1

Official status page Resolved

Started
Sep 11, 2026 · 14:19 UTC
Resolved
Sep 11, 2026 · 14:37
Lasted
17 min
Affected components
claude.ai Claude API (api.anthropic.com) Claude Code Claude Cowork

Updates

  1. Resolved

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

  2. Monitoring

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

  3. Monitoring

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

  4. 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.

  5. 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.

View on the official status page ↗