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Elevated errors for Mythos 5, Fable 5, Opus 5 and Claude Haiku 4.5

calendar_today July 25, 2026 domain claude

Jul 25 , 19:44 UTC Resolved - This incident has been resolved. Jul 25 , 18:44 UTC Identified - The issue has been identified and a fix is being implemented. Jul 25 , 18:40 UTC Investigating - We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Haiku 4.5.

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