OpenAI GPT–6 Astra breaks Enigma message that has resisted solution since 2005
OpenAI's GPT-6 Astra autonomously broke the unsolved 1941 Enigma message MVUEH, writing its own simulator, Bombe code and archive research.
OpenAI's GPT-6 Astra independently solved Enigma message MVUEH (Nr. 172, 10 July 1941, 82 letters), unbroken since 2005, after writing its own Python and C++ Enigma simulator and Bombe and using the repeated crib ROSENOW. The recovered key used wheel order 253, differing from the daily key 512, and validation by Frode Weierud of Crypto Cellar Research confirmed the plaintext, nearly identical to message SIPVX (Nr. 173). The model also traced correct Bundesarchiv file references (RS 3-3/20a, RS 3-3/63b), accomplishing in two days work that took humans weeks or months.
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