GPT-6 Astra successfully decrypted a German radio cipher from World War I.

What it means

GPT-6 Astra, a large language model, has reportedly deciphered a German radio message from World War I that had remained unsolved for 108 years. The message, sent in 1918 and encrypted with the ADFGVX cipher, appears to alert German forces to the movements of a British cruiser and an Allied squadron. The claim, made by a developer known as Prinz, suggests the model's pattern-recognition capabilities helped crack the historical code, though the exact method and verification details are still emerging.

Accuracy & sourcesGrounded

The claim originates from a developer's blog post on PrinzAI, which is a primary source for the specific decoding claim, but it has not been peer-reviewed or independently verified by cryptographers. Secondary coverage from Tom's Hardware and other outlets repeats the claim without independent confirmation, so the solidity is moderate—plausible but not yet corroborated by expert analysis or official archives.

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