Sonnet 4 errors

Incident Report for Claude

Resolved

This incident has been resolved.
Posted Feb 20, 2026 - 20:17 UTC

Identified

The issue has been identified and a fix is being implemented.
Posted Feb 20, 2026 - 20:10 UTC

Investigating

We are currently investigating this issue.
Posted Feb 20, 2026 - 19:42 UTC
This incident affected: Claude API (api.anthropic.com).