
AI-generated summary
The message from Napoleon I Bonaparte to General Marmont was sent in 1809 and was encrypted with a complex cipher, including numbers, ordinary and Greek letters, as well as conventional symbols. The key to the cipher was lost, so the contents of the message remained unknown for more than 200 years.
Artificial intelligence (AI) was able to unravel the encrypted message from the French Emperor Napoleon I Bonaparte, which he addressed to his general, 217 years later. This is stated in an article by The Daily Telegraph.
The discovery was made by AI engineer Carter Church, who works for the American cybersecurity company SentinelOne. To decipher the letter, he used the OpenAI GPT-6 Astra system.
The note was sent in 1809, it included 1.3 thousand encrypted characters, including numbers, ordinary letters, Greek letters and various conventional symbols. The code for the document addressed to General Auguste Frederic Louis Marmont was lost, so that for more than two hundred years the contents of the message remained a secret.
The AI was able to decipher the symbols in six hours and compare them with the work of cryptographers who had previously managed to identify 33 symbols. Afterwards, the system used the “simulated annealing” method - it selected words and compared them with the surviving texts of Marmont.
AI outlook — possibilities, not facts
AI methods will be applied to decipher other historical encrypted documents
Likely · Within months

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The artificial intelligence GPT-6 Astra deciphered an encrypted letter from Emperor Napoleon Bonaparte to General Auguste de Marmont, sent in 1809 through Napoleon's stepson Eugene. The letter contained information about the movements of French and Austrian troops on the eve of the war between France and the Habsburg Empire and remained a mystery for 217 years.

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