Resolved incident

Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1

Anthropic · Major · Started

Duration
16m
Severity
Major
Status
Resolved

Summary

Major · Resolved

The issue affecting Claude Mythos 5.1 and Claude Fable 5.1 has been resolved. Impact occurred from 05:40 PT / 12:40 UTC to 06:10 PT / 13:10 UTC.

View official incident ↗

Event timeline

How this incident unfolded, from the official status page.

  1. Investigating

    Anthropic

    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.

  2. Resolved

    Anthropic

    The issue affecting Claude Mythos 5.1 and Claude Fable 5.1 has been resolved. Impact occurred from 05:40 PT / 12:40 UTC to 06:10 PT / 13:10 UTC.