Elevated error rates on Sonnet 4.5

Incident Report for Claude

Resolved

This incident has been resolved.
Posted Dec 19, 2025 - 13:52 UTC

Monitoring

A fix has been implemented and we are monitoring the results.
Posted Dec 19, 2025 - 07:48 UTC

Identified

The issue has been identified and a fix is being implemented.
Posted Dec 19, 2025 - 06:59 UTC

Investigating

We are currently investigating this issue.
Posted Dec 19, 2025 - 04:34 UTC
This incident affected: claude.ai, platform.claude.com (formerly console.anthropic.com), Claude API (api.anthropic.com), and Claude Code.