Claude Fable 5.1 Solves a 370-Year-Old Cipher — What the Cyphral Distich Result Actually Shows
Evaluation firm Vals AI reports that Anthropic’s Claude Fable 5.1 produced a proposed solution to Sir Thomas Urquhart’s Cyphral Distich — a 64-number cryptogram from 1653 that had sat on historical “unsolved” lists for more than a century. According to […]