Anthropic: SLA evidence report

We hold no probe record for Anthropic: we read its status page, so the only incident record here is what Anthropic declared there. Nothing below is a measurement of ours, and the absence of one is not a record of no downtime.

Incidents Anthropic declared

7

On its own status page, in this window.

Window

2026-09-19 to 2026-10-19

UTC, 30 days.

• Sep 22, 2026, 12:57 AM UTC to Sep 22, 2026, 2:35 AM UTC

  Elevated errors for multiple models, impact major

• Sep 29, 2026, 2:21 PM UTC to Sep 29, 2026, 4:27 PM UTC

  Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API, impact major

• Oct 1, 2026, 4:20 PM UTC to Oct 1, 2026, 10:36 PM UTC

  Delayed credits on the Claude Platform, impact minor

• Oct 5, 2026, 1:05 PM UTC to Oct 5, 2026, 1:21 PM UTC

  Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1, impact major

• Oct 6, 2026, 12:24 PM UTC to Oct 6, 2026, 12:43 PM UTC

  Elevated errors for Claude Opus 5.5, impact major

• Oct 7, 2026, 1:20 AM UTC to Oct 7, 2026, 2:33 AM UTC

  Elevated errors loading usage data on platform.claude.com, impact major

• Oct 7, 2026, 1:25 PM UTC to Oct 13, 2026, 6:00 PM UTC

  Elevated errors on platform.claude.com, impact major