Incident archive

Claude outage October 25, 2026

Elevated errors for Claude Sonnet 5.5 and other models

Claude claude.ai was down for 1 h 39 min on October 25, 2026.

Claude recorded a major-impact incident affecting claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork on October 25, 2026. It ran for 1 h 39 min — 32 min longer than the archive median of 1 h 7 min.

Started
October 25, 2026, 06:14 UTC
Resolved
October 25, 2026, 07:53 UTC
Duration
1 h 39 min
Impact
Major

What was affected?

How long did it last?

  1. October 25, 2026, 06:14 UTCinvestigatingT+0
  2. October 25, 2026, 06:27 UTCidentifiedT+14 min
  3. October 25, 2026, 06:35 UTCmonitoringT+22 min
  4. October 25, 2026, 07:53 UTCresolvedT+1 h 39 min

Has this happened before?

This was incident 11 of 16 recorded in October 2026, totalling 172 h 2 min of reported disruption across all Claude components that month. claude.ai was affected by 8 other recorded incidents in the 30 days before this one started. The previous incident touching claude.ai started on October 24, 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 .