Update
An exhaustive database of affected models: Mythos/Fable 5.1, Mythos/Fable 5, Opus 5, Opus 4.8, Opus 4.6.
Posted Sep 03, 2026 - 13:50 UTC
Identified
We person identified the origin of elevated errors connected requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5 and are moving connected a fix. We will supply an update arsenic soon arsenic possible.
Posted Sep 03, 2026 - 13:41 UTC
Investigating
We are investigating elevated errors connected requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. We will supply an update arsenic soon arsenic possible.
Posted Sep 03, 2026 - 13:26 UTC
This incident affects: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.
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