OpenAI's GPT-6 Astra decodes 1941 Nazi Enigma message

Carter Leffen used OpenAI's GPT-6 Astra to solve a 1941 German Army Enigma message in approximately 10 hours. The model autonomously searched archives, built a simulator, and wrote cryptanalysis code, though human intervention was required to provide a crib and set the objective. The achievement has been verified by the CryptoCellar archive.