Elevated errors on Claude Sonnet 4.0

Incident Report for Anthropic

Resolved

As of 00:50 PT / 7:30 UTC, we have mitigated the incident.
Posted Aug 31, 2025 - 08:01 UTC

Investigating

We are investigating an issue with Claude Sonnet 4.0 that started at 22:30 PT / 5:30 UTC.
Posted Aug 31, 2025 - 07:32 UTC
This incident affected: claude.ai, console.anthropic.com, api.anthropic.com, and Claude Code.