Elevated errors on Claude Sonnet 4 for Claude.ai

Incident Report for Anthropic

Resolved

As of 14:10 UTC we did not observe any more errors
Posted May 29, 2025 - 07:18 PDT

Investigating

Since 13:30 UTC we've observed an elevated number of errors on the Claude Sonnet 4 model for Claude AI users.
Posted May 29, 2025 - 07:05 PDT
This incident affected: claude.ai.