503RADARINCIDENT ARCHIVEMETHODOLOGY
RESOLVED

Anthropic outage — June 3, 2026

Elevated errors for multiple models

Anthropic’s Claude.ai was disrupted for 43d 15h on June 3, 2026.

Key facts

DetectedJune 3, 2026 · 07:13 UTC
Confirmed07:13 UTC
Resolved23:04 UTC
Duration43d 15h
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.

What people reported

“It's that time of year when we're reminded what AQI (Air Quality Index) means, which begged the question - did Canada always have this number of massive wildfir”bluesky_jetstream · 16:47 UTC
“Claude AI is reportedly down again for hundreds of users right now. Are you affected as well? #ClaudeDown #Anthropic #ClaudeAiDown https://community.designtaxi.”@statusisdown.bsky.social · 18:50 UTC

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.