Elevated errors for Claude Sonnet 5.5

Summary

Elevated errors for Claude Sonnet 5.5

The issue affecting claude.ai, the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 07:42 PT / 14:42 UTC to 08:17 PT / 15:17 UTC.

• Started

  Oct 27, 2026 · 3:09 PM

• Resolved

  Oct 27, 2026 · 3:50 PM

• Duration

  41m

• Severity

  Major

• ◆

  Identified

  Oct 27 · 3:09 PM Claude

  We are investigating elevated errors on requests to Claude Sonnet 5.5. We will provide an update as soon as possible.

• ✓

  Resolved

  Oct 27 · 3:50 PM Claude

  The issue affecting claude.ai, the Claude API, Claude Code, and Claude Cowork has been resolved. Impact occurred from 07:42 PT / 14:42 UTC to 08:17 PT / 15:17 UTC.