Elevated errors on Claude 4 Sonnet

Incident Report for Anthropic

Resolved

We saw an elevated number of errors on Claude 4 Sonnet starting at 06:00 PT / 13:00 UTC, having a peak at around 08:30 PT / 15:30 UTC, and being resolved at 09:05 PT / 16:05 PT.
Posted Jul 29, 2025 - 16:32 UTC

Investigating

We are currently investigating this issue.
Posted Jul 29, 2025 - 15:51 UTC
This incident affected: claude.ai, console.anthropic.com, api.anthropic.com, and Claude Code.
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