New Claude Mythos becomes the first AI model to clear all cyberattack simulations from Britain's AI safety agency
The UK AI Security Institute has revised its estimate of AI cyber capability doubling rate twice, now Anthropic's Claude Mythos Preview and OpenAI's GPT-5.5 have exceeded the accelerated timeline. Mythos is the first to clear all AISI attack simulations. Anthropic's red team lead warns it may seem dumb within a year.
New Claude Mythos becomes the first AI model to clear all cyberattack simulations from Britain's AI safety agency
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