Claude Mythos Preview

Everything Fervor AI has published that touches Claude Mythos Preview — 2 pieces, newest first.

• Claude Mythos Found Two Cryptographic Attacks. Only One of Them Was Cheap to Check.

  Anthropic's two cryptanalysis results are a natural experiment showing that the cost of verifying a machine-generated finding is set by whether the finding runs, so…

• Briefing · July 29, 2026 · morning

  Frontier models crossed from finding bugs in demos to breaking real systems and real math in the same week, and the defensive response that arrived within 72 hours had…