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Incident archive

Claude outage September 3, 2026

Elevated errors for multiple models

Claude claude.ai was down for 2 h 57 min on September 3, 2026.

Claude recorded a major-impact incident affecting claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork on September 3, 2026. It ran for 2 h 57 min — 2.6× the archive median of 1 h 7 min.

Started
September 3, 2026, 13:26 UTC
Resolved
September 3, 2026, 16:23 UTC
Duration
2 h 57 min
Impact
Major

What was affected?

How long did it last?

  1. September 3, 2026, 13:26 UTCinvestigatingT+0
  2. September 3, 2026, 13:41 UTCidentifiedT+15 min
  3. September 3, 2026, 13:50 UTCidentifiedT+24 min
  4. September 3, 2026, 14:49 UTCidentifiedT+1 h 24 min
  5. September 3, 2026, 15:25 UTCidentifiedT+1 h 59 min
  6. September 3, 2026, 16:06 UTCmonitoringT+2 h 41 min
  7. September 3, 2026, 16:23 UTCresolvedT+2 h 57 min

Has this happened before?

This was incident 6 of 10 recorded in September 2026, totalling 109 h 47 min of reported disruption across all Claude components that month. claude.ai was affected by 21 other recorded incidents in the 30 days before this one started. The previous incident touching claude.ai started on September 3, 2026. These comparisons are drawn from our archive, which starts on July 14, 2026. See the full outage history.

Summarized by Claude Network from Claude Status. Last verified .