LLMs Decode 17th Century Alchemical Letters

Researchers used GPT-6 Sol and Opus 5.5 to decode 17th century alchemical letters and a 1941 Enigma message. The models identified a passage Isaac Newton translated from French, found a note in the German Bundesarchiv, and determined John Dee's Liber Loagaeth is mostly nonsense syllables. Experts call for collaborations between historians and AI labs.