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

Updates

• resolved

  This incident has been resolved.

  Jul 25, 2026, 7:44 PM UTC

• identified

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

  Jul 25, 2026, 6:44 PM UTC

• investigating

  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.

  Jul 25, 2026, 6:40 PM UTC