Outage recap · Anthropic

Claude outage — June 1, 2026

On June 1, 2026, Claude had 5 reported incidents on Anthropic's official status page. Below is what was reported — impact, timing, and the AI services the same upstream outage could affect.

Opus 4.7 elevated errors

minor
Started
Jun 1, 2:48 AM EDT
Resolved
Jun 1, 3:22 AM EDT
Duration
34 min

As reported by Anthropic's official status page (status: resolved). We report the vendor's own words, never an inferred cause.

Sonnet 4.5 elevated errors

minor
Started
Jun 1, 5:08 AM EDT
Resolved
Jun 1, 5:28 AM EDT
Duration
20 min

As reported by Anthropic's official status page (status: resolved). We report the vendor's own words, never an inferred cause.

Elevated errors for Claude Opus 4.7

minor
Started
Jun 1, 8:15 AM EDT
Resolved
Jun 1, 9:33 AM EDT
Duration
1h 18m

As reported by Anthropic's official status page (status: resolved). We report the vendor's own words, never an inferred cause.

Elevated errors on Claude Sonnet 4.6

minor
Started
Jun 1, 10:40 AM EDT
Resolved
Jun 1, 11:41 AM EDT
Duration
1h 1m

As reported by Anthropic's official status page (status: resolved). We report the vendor's own words, never an inferred cause.

Degraded performance for Claude Sonnet 4.6

minor
Started
Jun 1, 2:28 PM EDT
Resolved
Jun 1, 3:06 PM EDT
Duration
38 min

As reported by Anthropic's official status page (status: resolved). We report the vendor's own words, never an inferred cause.

The AI cascade

Claude depends on Anthropic. When that upstream has an incident, it doesn't hit Claude alone — these AI tools share the dependency and can degrade at the same time:

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AIDownCheck is not affiliated with Anthropic. This recap summarizes incidents published on Anthropic's official status page.