503RADARINCIDENT ARCHIVEMETHODOLOGY
RESOLVED

Anthropic outage — June 3, 2026

Elevated errors for multiple models

Anthropic’s Claude.ai was disrupted on June 3, 2026.

Key facts

DetectedJune 3, 2026 · 07:13 UTC
Confirmed07:13 UTC
ResolvedJuly 16, 2026 · 23:04 UTC
ServiceClaude.ai
Official recordhttps://stspg.io/zhv1t1h0dbby

Timeline

  1. 07:13Z

    Detected · Signal

    2 crowd signals for Claude.ai on ANTHROPIC crossed the signal threshold.
  2. 07:13Z

    Confirmed · Official

    An official ANTHROPIC status-page notice corroborated the event the same cycle.
  3. 23:04Z

    Resolved

    Signal volume fell back below the threshold; the event was closed.

How this was detected

1 independent evidence class for claude-ai on ANTHROPIC. 2 crowd reports across bluesky (single platform — not corroborating), z=-0.1σ vs the cell baseline. Official notice confirms it.