Claude Mythos Preview: Anthropic's Most Powerful Model They Won't Release (opens in new tab)

<h1> Claude Mythos Preview: Anthropic's Most Powerful Model They Won't Release </h1> <p>On April 7, 2026, Anthropic made an unprecedented announcement. They published a 244-page System Card for their most powerful model — Claude Mythos Preview — and simultaneously declared they would <strong>not</strong> release it to the public. The reason: its cybersecurity capabilities are too dangerous.</p> <h2> The Benchmarks Tell a Clear Story </h2> <p>Claude Mythos Preview doesn't ju...