Anthropic incident
Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
Started
October 5, 2026 at 01:05 PM UTC
Duration
15 min
Resolved
October 5, 2026 at 01:21 PM UTC
Updates timeline
- 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.
- 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.
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