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AnthropicIncidentMateriality 3

Anthropic resolves error spikes affecting Claude Mythos 5.1 and Fable 5.1

Anthropic reported intermittent error spikes affecting Claude Mythos 5.1 and Claude Fable 5.1. A fix was deployed and the incident was resolved after about 86 minutes.

First seen 15 Sep, 11:14 UTC on status.claude.com1 sourceLast update 35d ago

What the sources say

Linked, never rewritten. Official means the lab itself.

Official1

status.claude.com· 15 Sep, 11:14Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

Press0

No independent coverage yet.

How it unfolded

Every source in the order it appeared. Times in UTC.

15 Sep 11:14status.claude.com Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1

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