Anthropic incident

Elevated error rates on requests to some models

Major Resolved View vendor source →

Anthropic experienced a major incident on May 15, 2026 affecting Claude API (api.anthropic.com) and Claude Code, lasting 1h 28m. The incident has been resolved; the full update timeline is below.

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

  1. investigating May 15, 2026, 12:18 AM UTC

    We are currently investigating this issue.

  2. investigating May 15, 2026, 12:19 AM UTC

    We are continuing to investigate this issue.

  3. 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.

  4. 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.

  5. resolved May 15, 2026, 01:46 AM UTC

    This incident has been resolved.