GPT-6 Cracks a Cipher That Stumped the World for a Century

A century-old cipher just met its match, and it wasn't a historian who cracked it.

During World War I, the German army used a technique called ADFGVX to encrypt radio messages. Each letter got mapped to a pair from a grid built with those six letters as headers.

Simple in theory, brutal in practice. Some of those messages ended up on a famous German list of '50 unsolved ciphers,' sitting untouched for over 100 years.

Then GPT-6 Astra showed up. It didn't just read the message, it reverse-engineered the underlying pattern and figured out the key the Germans used, with no outside hints.

Think of solving a jigsaw puzzle without ever seeing the picture on the box, just by feeling the shape of scattered pieces. That's essentially what happened here.

This isn't just a neat trivia win. It's proof that AI can now function as a genuine historical analyst, spotting patterns humans simply can't hold in their heads.

If there are archives still sealed by old codes, the next generation of AI might be the one holding the key.

🔗 Original Source & Reference: https://www.prinzai.com/p/gpt-6-astra-solves-a-wwi-german-radio

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