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Claude Status page reports increased error rates for five Claude models

clearly official source

The Claude Status page reported increased error rates for requests to five Claude models. The notice, published on 25 October at 06:14 UTC, states that the incident is under investigation and another update will follow as soon as possible.

The Claude Status page published a notice on 25 October at 06:14 UTC reporting increased error rates for requests to Claude Mythos 5.1, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5 and Claude Haiku 5.5.

According to the notice, the incident is under investigation. The operations team promised another update as soon as possible.

What changed

Why it matters

Increased error rates may disrupt work with the affected models. The notice gives users important context when investigating why requests have failed.

Relevant practical impact

What this means

01

For individuals

If you experience problems with a request to one of the affected models, the reported service incident should also be taken into account.

What to do If requests fail, check the Claude Status page for further updates.
More practical updates →
Claude Fable 5.1 Claude Haiku 5.5 Claude Mythos 5.1 Claude Opus 5.5 Claude Sonnet 5.5

Check the original

Event sources

clearly official source · 1 publisher, 0 independent. We count feeds from the same owner only once.

1
Claude Status — incident history official service status · first detected Elevated errors for Claude Sonnet 5.5 and other models