503RADARINCIDENT ARCHIVEMETHODOLOGY
RESOLVED

Anthropic outage — July 31, 2026

Degraded performance on Claude Sonnet 5

Anthropic’s Claude.ai was disrupted for 51m on July 31, 2026.

Key facts

DetectedJuly 31, 2026 · 06:23 UTC
Confirmed06:23 UTC
Resolved07:14 UTC
Duration51m
ServiceClaude.ai
Official recordhttps://stspg.io/zxt2fw2t7xqy

Timeline

  1. 06:23Z

    Detected · Official

    Reported directly on ANTHROPIC's official status page — no earlier independent (crowd / dependency / measurement) signal.
  2. 07:14Z

    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.