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Elevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5

calendar_today October 24, 2026 domain claude

Oct 24 , 00:11 UTC Resolved - The issue affecting Claude models has been resolved. Impact occurred from 16:28 PT / 23:28 UTC on October 23 to 16:59 PT / 23:59 UTC on October 23. Oct 23 , 23:54 UTC Monitoring - We are seeing success rates return to normal for all affected models, and are continuing to monitor to ensure no further issues.

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