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Tom’s Guide
Tom’s Guide
Technology
Amanda Caswell

Anthropic reportedly 'lost control' of its most dangerous AI model — and that should worry everyone

Anthropic Claude Mythos ChatGPT Cybersecurity
Claude on mobile.

Just last week, Anthropic launched Claude Opus 4.7, described as a safer public-facing version of Claude Mythos, a model reportedly considered too dangerous for broad release.

Now, the company is facing uncomfortable questions after reports claimed an unauthorized group gained access to Claude Mythos, a highly restricted internal model built for advanced cybersecurity tasks.

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