Elevated errors for Claude Opus 5.5

Incident Report for Claude

Resolved

The issue affecting Claude Opus 5.5 has been resolved. Impact occurred from 17:23 PT on October 23 / 00:23 UTC on October 24 to 17:34 PT on October 23 / 00:34 UTC on October 24.

Posted Oct 24, 2026 - 00:37 UTC

Investigating

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

Posted Oct 24, 2026 - 00:31 UTC

This incident affected: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.