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Elevated errors for Claude Mythos 5, Claude Fable 5, and Claude Sonnet 5

calendar_today August 13, 2026 domain claude

Aug 13 , 16:08 UTC Resolved - The issue affecting Claude Mythos 5 and Claude Fable 5 has been resolved. Aug 13 , 15:44 UTC Update - We are investigating elevated errors on requests to Claude Mythos 5 and Claude Fable 5. We will provide an update as soon as possible.

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