GPT-6 Astra cracks Napoleon's 217-year-old secret letter in 6 hrs

AI has decoded a 217-year-old secret letter commissioned by Napoleon Bonaparte. AI engineer Carter Church used OpenAI's GPT-6 Astra to crack the previously unsolved cipher in about six hours. The 1809 letter, sent by Napoleon's stepson Eugene to Marshal Marmont, outlined positions of the French and allied troops and reassured him that there was no need to fear enemy forces.