Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
Oct 5, 13:05 UTCOct 5, 13:21 UTC
Duration
16m
Impact
Major
Root cause
Not disclosed
Anthropic, 90 days
86 incidents
Affected
claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork
Final update
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.
Timeline
- Resolved · Oct 5, 13:21 UTC
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.
- Investigating · Oct 5, 13:05 UTC
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.
More from Anthropic
Full history| Started | Incident | Impact | Duration |
|---|---|---|---|
| Oct 116:20 UTC5 days ago | Delayed credits on the Claude Platform | minor | 6h 16m |
| Sep 2914:21 UTC7 days ago | Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API | major | 2h 6m |
| Sep 2200:57 UTC2 weeks ago | Elevated errors for multiple models | major | 1h 38m |
| Sep 1616:18 UTC2 weeks ago | Issues with Google Play subscriptions | none | 33m |
| Sep 1509:48 UTC3 weeks ago | Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1 | major | 1h 26m |
| Sep 1114:19 UTC3 weeks ago | Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1 | major | 17m |