Downrightnow
// Incident Post-MortemDRN-490C5810

Claude outage on May 9, 2026

Major severityResolved6h 25mAI Tools
Started · UTC
May 09, 06:40 PM
13d ago
Resolved · UTC
May 10, 01:05 AM
13d ago
Duration
6h 25m
End-to-end
Peak confidence
77.00
27 snapshots
// User impact

Claude users likely saw failed connections, degraded availability, or session instability for this AI Tools service. The incident reached Major severity and lasted 6h 25m. User reports peaked at 1 reports in a 60-minute window.

// What happened

Claude appears to be operating normally based on current signals. DNS is no recent DNS check, user reports are quiet.

Cached · Fri, May 22, 2026, 11:04 PM UTC · scope: service signals

// Timeline
  1. Status changed to Operational

    The stored readout moved to Operational with confidence 55.00.

  2. Status changed to Possible Issues

    The stored readout moved to Possible Issues with confidence 36.00.

  3. Incident detected

    Major confidence crossed the incident threshold for Claude.

  4. Peak confidence reached

    Confidence peaked at 78.00 while the service was marked Major Outage.

  5. Marked resolved

    The incident was closed after 6h 25m of observed impact.

// Signals by source3 sources
  • Official status

    Status.Anthropic.Com reported an open incident, Elevated errors on Claude Opus 4.1 (claude.ai, Claude Console (platform.claude.com), Claude API (api.anthropic.com)) · impact: minor

    06:33 PM UTC
  • User reports

    1 reports in 15m, 1 in 60m, Crowd-sourced reports from Claude users · top complaint: "Responses not loading" (1).

    1/15m
  • News scan

    News: Confirms, AOL reports Claude is down with errors and the chatbot is not working properly, indicating an outage/disruption for the service.

    Major
// Aggregate evidence

Confidence scoring

77.00

The incident reached 77.00 peak confidence across 27 stored status snapshots.

User reports

1 / 15m

Report volume reached 1 in 15 minutes and 1 in 60 minutes during the incident window.

Status samples

24 affected

24 snapshots in the window showed degraded, recovering, or major-outage state before recovery.

Recovery signal

Resolved

Recovery was recorded at Sun, May 10, 2026, 01:05 AM UTC.