Elevated errors for Claude Sonnet 5.5 and other models
The issue affecting Claude services has been resolved. Impact occurred from 23:05 PT on October 24 / 06:05 UTC on October 25 to 23:35 PT on October 24 / 06:35 UTC on October 25.
- Incident ID
- #e3d614c0
- Impact
- major
- Components
- anthropic
Updates
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investigating Oct 25, 2026, 2:14 PM GMT+08:00
We are investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, and Claude Haiku 5.5. We will provide an update as soon as possible.
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identified Oct 25, 2026, 2:27 PM GMT+08:00
We have identified the cause of elevated errors on requests to Claude Sonnet 5.5 and are working on a fix. We will provide an update as soon as possible.
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monitoring Oct 25, 2026, 2:35 PM GMT+08:00
A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.
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resolved Oct 25, 2026, 3:53 PM GMT+08:00
The issue affecting Claude services has been resolved. Impact occurred from 23:05 PT on October 24 / 06:05 UTC on October 25 to 23:35 PT on October 24 / 06:35 UTC on October 25.