Isitreallydown?
// Incident Post-MortemDRN-1531A6C5

Anthropic outage on May 9, 2026

Minor severityResolved45 minAI Tools
Started · UTC
May 09, 07:57 AM
3d ago
Resolved · UTC
May 09, 08:42 AM
3d ago
Duration
45 min
End-to-end
Peak confidence
45.00
18 snapshots
// What happened

May 9, 07:57 UTCIdentified - The issue has been identified and a fix is being implemented.

Deterministic readout · awaiting AI summary pass

// Timeline

  1. Status changed to Operational

    The stored readout moved to Operational with confidence 55.00.

  2. Incident detected

    Minor confidence crossed the incident threshold for Elevated errors on Claude Opus 4.1.

  3. Marked resolved

    The incident was closed after 45 min of observed impact.

  4. Peak confidence reached

    Confidence peaked at 55.00 while the service was marked Operational.

// Signals by source0 sources

No per-source signal payloads were preserved in this incident's snapshot window.

// Aggregate evidence

Confidence scoring

45.00

The incident reached 45.00 peak confidence across 18 stored status snapshots.

User reports

0 / 15m

No elevated user-report volume was preserved in the incident window snapshots.

Status samples

0 affected

The incident row exists, but the bounded snapshot window does not include affected status samples.

Recovery signal

Resolved

Recovery was recorded at Sat, May 09, 2026, 08:42 AM UTC.

// User impact

Anthropic users likely saw failed connections, degraded availability, or session instability for this AI Tools service. The incident reached Minor severity and lasted 45 min. The stored report window does not show a preserved user-report spike.