Anthropic outage history

Every Anthropic incident we've recorded, grouped by month. Uptime is measured from crowd-sourced client-side traffic — it is our measurement, not Anthropic's own.

100% Uptime, last 90 days
2 Incidents in 18 months
17 Clean months
Monthly uptime and incident counts for Anthropic
MonthUptimeIncidentsTotal downtimeLongest outage
October 2026100%———
September 2026100%———
August 2026100%———
July 2026100%———
June 2026100%———
May 2026100%———
April 2026100%———
March 202699.967%215m11m
February 2026100%———
January 2026100%———
December 2025100%———
November 2025100%———
October 2025100%———
September 2025100%———
August 2025100%———
July 2025100%———
June 2025100%———
May 2025100%———

Looking for the live picture? See Anthropic current status, the reliability report card, or all recent incidents.