ChatGPT-6 Astra cracks 217-year-old Napoleonic code in just six hours

An AI engineer used GPT-6 Astra to reveal the contents of a cipher that hadn’t been read since the Napoleonic Wars. The task was initiated with a single image and prompt, and took just six hours from start to finish.

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2026-10-04 13:08 · Tom's Hardware
ChatGPT-6 Astra cracks 217-year-old Napoleonic code in just six hours

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