Anthropic outage — June 3, 2026

Elevated error rates for Sonnet 5

Anthropic’s Claude.ai was disrupted for 49d 9h on June 3, 2026.

Key facts

Timeline

1. 07:13Z

   Detected · Official

   Reported directly on ANTHROPIC's official status page — no earlier independent (crowd / dependency / measurement) signal.
2. 16:19Z

   Resolved

   Signal volume fell back below the threshold; the event was closed.

How this was detected

Confirmed by ANTHROPIC's official status page — no independent (crowd / dependency / measurement) corroboration.