Elevated errors on Claude Sonnet 4

Incident Report for Anthropic

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Aug 21, 2025 - 15:36 UTC

Identified

The issue has been identified and a fix is being implemented.
Posted Aug 21, 2025 - 13:45 UTC

Investigating

We are currently investigating this issue.
Posted Aug 21, 2025 - 13:39 UTC
This incident affects: claude.ai, api.anthropic.com, and Claude Code.