Anthropic outage — August 31, 2026
Degraded performance on claude.ai and Claude Code
Anthropic’s Claude.ai was disrupted for 1h 33m on August 31, 2026.
Key facts
| Detected | August 31, 2026 · 19:21 UTC |
| Confirmed | 19:21 UTC |
| Resolved | 20:54 UTC |
| Duration | 1h 33m |
| Service | Claude.ai |
| Official record | https://stspg.io/gny7dn3k231b |
Timeline
- 19:21Z
Detected · Signal
2 crowd signals for Claude.ai on ANTHROPIC crossed the signal threshold. - 19:21Z
Confirmed · Official
An official ANTHROPIC status-page notice corroborated the event the same cycle. - 20:54Z
Resolved
Signal volume fell back below the threshold; the event was closed.
Evidence
| Official status feed | degraded (changed 19:21 UTC) |
| Anomaly score | +0.24σ above this cell's own baseline |
| Engine confidence | 95% |
Outage-related signals per hour over the live window, oldest → newest (peak 1).
How this was detected
1 independent evidence class for claude-ai on ANTHROPIC. 2 crowd reports across bluesky (single platform — not corroborating), z=+0.2σ vs the cell baseline. Official notice confirms it.