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AnthropicIncidentMateriality 3

Anthropic resolves elevated errors affecting multiple Claude models

Anthropic reported elevated errors affecting Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5. The issue was resolved and impact ended at 9:16 PT.

First seen 3 Sep, 16:23 UTC on status.claude.com1 sourceLast update 47d ago

What the sources say

Linked, never rewritten. Official means the lab itself.

How it unfolded

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

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