Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

4 up0 degraded0 down1 unknown
Snapshot 18:25:40 UTC updates every 60s

Official incident · Claude Code

Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

resolved · 2026-09-15 09:48:23 UTC · Resolved 2026-09-15 11:14:44 UTC

Official component matchmajorclaude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork

Official 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.

DATA SOURCE

Data from each vendor official status page, refreshed every 60 seconds. Failed reads show unknown and last success time.

Snapshots and status changes are retained for up to 7 days; official incidents remain in the site index. Everything is generated only from official data captured by this site.