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Security Community Slams US Ban on Exporting Mythos, Fable

This Dark Reading article, from June 16, 2026, reports on an open letter urging the US government to lift export controls on Anthropic's Claude Fable 5 and Mythos 5 models. Casey Ellis co-signed the letter, which argues the restriction would only help US competitors and the cited research can be replicated elsewhere.

Source description, as published

An open letter signed by dozens of security experts asked the government to reverse export restrictions on Anthropic's Claude Fable 5 and Mythos 5 models.

Inventors / authors: Alexander Culafi