The AI company Anthropic announced that it will not be publicly releasing its newest system, known as “Mythos,” citing concerns over advanced capabilities during testing. The decision follows recent leaks that suggested the model was the most powerful system the company had developed to date. On Tuesday, Anthropic published a system card for the model, labeled “Claude Mythos Preview,” that explained the significant leap in performance that ultimately led the company to limit its availability, per Gizmodo. System cards are documents used by AI developers to provide transparency into how a model performs, including its strengths, weaknesses, and potential dangers.
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