Elevated errors on Claude Sonnet 4.5

Incident Report for Claude

Resolved

As of 2026-02-01 03:55 PT / 11:55 UTC the errors are back to the baseline.
Posted Feb 01, 2026 - 12:34 UTC

Update

Start of errors 2026-02-01 03:36 PT / 11:36 UTC.
Posted Feb 01, 2026 - 11:48 UTC

Investigating

We are currently investigating this issue.
Posted Feb 01, 2026 - 11:47 UTC
This incident affected: claude.ai, platform.claude.com (formerly console.anthropic.com), Claude API (api.anthropic.com), and Claude Code.