Elevated errors on Sonnet 5 and Haiku 4.5

Incident Report for Claude

Identified

The issue has been identified and a fix is being implemented.
Posted Jul 17, 2026 - 07:10 UTC

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Jul 17, 2026 - 07:03 UTC

Investigating

We are currently investigating this issue.
Posted Jul 17, 2026 - 06:47 UTC
This incident affects: claude.ai, Claude API (api.anthropic.com), Claude Code, and Claude Cowork.