Anthropic outage — August 13, 2026
Service disruption on Claude Code on the web and related services
Anthropic’s Multiple services was disrupted for 12h 00m on August 13, 2026. 503Radar’s sensors raised the first signal at 13:09 UTC, 11h 29m before the official status page acknowledged impact.
Key facts
| Detected | August 13, 2026 · 13:09 UTC |
| Confirmed | 00:38 UTC · lead time 11h 29m |
| Resolved | 01:09 UTC |
| Duration | 12h 00m |
| Service | Multiple services |
| Official record | https://stspg.io/7b3qnvqbdf60 |
Timeline
- 13:09Z
Detected · Signal
3 crowd signals for Multiple services on ANTHROPIC crossed the signal threshold. - 00:38Z
Confirmed · Official
An official ANTHROPIC status-page notice corroborated the event — 11h 29m after detection. - 01:09Z
Resolved
Signal volume fell back below the threshold; the event was closed.
How this was detected
2 independent evidence classes for Multiple services on ANTHROPIC. 23 crowd reports across bluesky, hn_comments, mastodon, telegram (independent class), z=+2.5σ vs the cell baseline; 1 press mention (corroboration). Official notice confirms it, 11h 29m after the crowd.