Claude (Anthropic) Status

← Claude (Anthropic)

Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

Official status page Resolved

Started
Sep 15, 2026 · 09:48 UTC
Resolved
Sep 15, 2026 · 11:14
Lasted
1h 26m
Affected components
claude.ai Claude API (api.anthropic.com) Claude Code Claude Cowork

Updates

  1. Resolved

    A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue.

  2. Monitoring

    A fix has been deployed for Claude Mythos 5.1 and Claude Fable 5.1 and we are monitoring to ensure it has resolved the issue.

  3. Investigating

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

  4. Investigating

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

View on the official status page ↗