Anthropic incident

Elevated errors for Mythos 5, Fable 5, Opus 5 and Claude Haiku 4.5

Major Resolved View vendor source →

Anthropic experienced a major incident on July 25, 2026 affecting claude.ai and Claude API (api.anthropic.com) and 1 more component, lasting 1h 4m. The incident has been resolved; the full update timeline is below.

Started
Jul 25, 2026, 06:40 PM UTC
Resolved
Jul 25, 2026, 07:44 PM UTC
Duration
1h 4m
Detected by Pingoru
Jul 25, 2026, 06:40 PM UTC

Affected components

claude.aiClaude API (api.anthropic.com)Claude CodeClaude Cowork

Update timeline

  1. investigating Jul 25, 2026, 06:40 PM UTC

    We are investigating elevated errors on requests to Claude Mythos 5, Claude Fable 5, and Claude Haiku 4.5. We will provide an update as soon as possible.

  2. identified Jul 25, 2026, 06:44 PM UTC

    The issue has been identified and a fix is being implemented.

  3. resolved Jul 25, 2026, 07:44 PM UTC

    This incident has been resolved.