OpenAI's GPT-6 Astra Decrypts 83-Year-Old Nazi Radio Message in 10 Hours

OpenAI's GPT-6 Astra successfully decrypted an 82-character Nazi radio message that had remained unsolved for 83 years, completing the task in just ten hours. The original message was sent on July 10, 1941, and the decryption process revealed 68 characters of coherent German text. The message was encrypted using the Enigma machine, which had 159 quintillion possible daily settings, making it a significant challenge for cryptanalysts. Marian Rejewski first broke the Enigma's code in 1932, but this specific message eluded decryption until now. Carter Leffen, a product development coach at Bloomberg LP, noted the disproportionate effort in building the website for the decryption project, stating, "99 times more effort into building the website that describes the problem and the solution than into actually cracking the code." This achievement highlights the advancements in AI-driven cryptanalysis and may influence future applications in historical research and security fields.