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anthropic1 min read

Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1

Anthropic — Major · Resolved · started Mon, 05 Oct 2026 13:05:44 GMT

By Prismix Blog
Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1

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Originally published by Prismix Blog on Oct 5, 2026.

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