Claude Sonnet 4.5 error spike

Incident Report for Claude

Resolved

This incident has been resolved.

Posted Apr 20, 2026 - 07:25 UTC

Update

We are continuing to monitor for any further issues.

Posted Apr 20, 2026 - 06:41 UTC

Monitoring

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

Posted Apr 20, 2026 - 06:38 UTC

Investigating

We are currently investigating this issue.

Posted Apr 20, 2026 - 06:14 UTC

This incident affected: claude.ai, platform.claude.com (formerly console.anthropic.com), Claude API (api.anthropic.com), Claude Code, Claude Cowork, and Claude for Government.