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Anthropic has released Claude Opus 4.7, a model that narrows the gap to its restricted Mythos while layering on tighter safety guardrails. Opus 4.7 Launch Details The release slots between Anthropic's standard production models and Mythos Preview, the research system the company declined to ship pub

Anthropic's Claude Mythos Preview became the first AI model to complete a full simulated corporate network attack, solving 73% of expert-level cybersecurity tasks that no previous AI system could crack, according to the UK AI Security Institute (AISI). AISI Cyber Evaluation AISI, a research body wit

Anthropic on Tuesday released a 244-page system card for its most advanced AI model, Claude Mythos Preview, revealing a system so capable — and at times so unpredictable — that the company has decided against making it available to the general public. Limited access was granted to a handful of major