Anthropic incident

Elevated error rates on requests to some models

Resolved after 1 hour 28 minutes, affecting Claude API (api.anthropic.com) and Claude Code, on May 15, 2026.

identified May 15, 2026, 01:26 AM UTC

We are working to resolve errors impacting Claude Opus 4.6, and have seen both Sonnet 4.6 and Opus 4.7 return to normal success rates.

Started: May 15, 2026, 12:18 AM UTC
Resolved: May 15, 2026, 01:46 AM UTC
Duration: 1h 28m
Detected by Pingoru: May 15, 2026, 12:18 AM UTC

Affected components

Claude API (api.anthropic.com)Claude Code

Update timeline

investigating May 15, 2026, 12:18 AM UTC

We are currently investigating this issue.
investigating May 15, 2026, 12:19 AM UTC

We are continuing to investigate this issue.
identified May 15, 2026, 01:06 AM UTC

We are currently working to resolve issues affecting requests to Claude Opus and Sonnet 4.6, though success rates for Opus 4.7 have returned to normal.
identified May 15, 2026, 01:26 AM UTC

We are working to resolve errors impacting Claude Opus 4.6, and have seen both Sonnet 4.6 and Opus 4.7 return to normal success rates.
resolved May 15, 2026, 01:46 AM UTC

This incident has been resolved.

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