Degraded performance for Claude Opus 5 and Claude Haiku 4.5

Incident Report for Claude

Resolved

This incident has been resolved.

Posted Aug 19, 2026 - 11:02 UTC

Monitoring

A fix has been implemented and we are monitoring the results.

Posted Aug 19, 2026 - 10:33 UTC

Identified

We have identified the cause of elevated errors on requests to Claude Opus 5 and Claude Haiku 4.5 and are working on a fix. We will provide an update as soon as possible.

Posted Aug 19, 2026 - 09:42 UTC

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