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  "path": "/t/exclusive-anthropic-is-testing-mythos-its-most-powerful-ai-model-ever/36985#post_16",
  "publishedAt": "2026-04-15T13:23:22.000Z",
  "site": "https://discuss.privacyguides.net",
  "tags": [
    "AI Security Institute",
    "Our evaluation of Claude Mythos Preview’s cyber capabilities | AISI Work"
  ],
  "textContent": "The amount of hype Mythos got from what is essentially a PR marketing post is insane.\n\nIndependent testing rather shows an iterative increase in capability compared to previous SOTA models, not some new paradigm or “game changer”:\n\nAI Security Institute\n\n### Our evaluation of Claude Mythos Preview’s cyber capabilities | AISI Work\n\nWe conducted cyber evaluations of Anthropic’s Claude Mythos Preview and found continued improvement in capture-the-flag (CTF) challenges and significant improvement on multi-step cyber-attack simulations.\n\nHowever, LLMs are advancing at a rapid pace and keep getting better at cybersecurity tasks - with Mythos being the top one for now:\n\n> Mythos Preview’s success on one cyber range indicates that it is at least capable of autonomously attacking small, weakly defended and vulnerable enterprise systems where access to a network has been gained. However, our ranges have important differences from real-world environments that make them easier targets. They lack security features that are often present, such as active defenders and defensive tooling.",
  "title": "Exclusive: Anthropic is testing ‘Mythos,’ its ‘most powerful AI model ever"
}