503RADARINCIDENT ARCHIVEMETHODOLOGY
RESOLVED

Anthropic outage — June 3, 2026

Elevated errors on several models

Anthropic’s Claude.ai was disrupted for 48d 11h on June 3, 2026.

Key facts

DetectedJune 3, 2026 · 07:13 UTC
Confirmed07:13 UTC
Resolved18:29 UTC
Duration48d 11h
ServiceClaude.ai
Official recordhttps://stspg.io/74sqh6d7f9vq

Timeline

  1. 07:13Z

    Detected · Signal

    1 crowd signal 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. 18:29Z

    Resolved

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

What people reported

“Is Claude AI down for you right now too? #ClaudeDown #Anthropic #ClaudeAiDown #ClaudeAI”@statusisdown.bsky.social · 15:50 UTC

How this was detected

1 independent evidence class for claude-ai on ANTHROPIC. 1 crowd report across bluesky (single platform — not corroborating), z=-0.2σ vs the cell baseline. Official notice confirms it.