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Claude: Elevated errors for Claude Sonnet 5.5 and other models

MajorStatus: resolvededitedStarted Resolved (1.6 h)4 updatesstatus.claude.com (opens in new tab)

Affected components: claude.aiClaude API - api.anthropic.comClaude CodeClaude Cowork

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Timeline of updates

  1. investigating

    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.

  2. identified

    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.

  3. monitoring

    A fix has been deployed for the issue affecting Claude services and we are monitoring for recovery.

  4. resolved

    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.

Changes Rewindex caught on this incident

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Impact, status and times are the vendor’s own, as last archived. View on status.claude.com (opens in new tab).

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