Elevated errors on Claude Opus 5 and Haiku 4.5

Incident Report for Claude

Resolved

As of 7:34 PST / 14:34 UTC the errors have returned to baseline.
Posted Jul 27, 2026 - 14:36 UTC

Update

Haiku 4.5 is also returning errors.
Posted Jul 27, 2026 - 14:04 UTC

Update

We are currently investigating this issue.
Posted Jul 27, 2026 - 13:42 UTC

Update

We are continuing to investigate this issue.
Posted Jul 27, 2026 - 13:41 UTC

Investigating

We are currently investigating this issue.
Posted Jul 27, 2026 - 13:39 UTC
This incident affected: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.