GPT-6 Astra Deciphers Century-Old Unbroken WWI German Cipher

GPT-6 Astra independently deciphered an unbroken 1918 German WWI radiogram, recovering the ADFGVX key itself and verifying its solution. Hacker News debates it as a striking display of frontier-model reasoning.

2026-09-18 ~ 2026-09-19 · 4 related posts

• GPT-6 Astra Deciphers an Undeciphered 1918 German WWI Radio Message—And Verifies Its Own Work — GregKamradt · 2026-09-18
• GPT-6 Astra Cracks a Previously Unsolved 1918 German WWI Radio Message — iamfakhrealam · 2026-09-18
• GPT-6 Astra cracks a WWI German radio cipher, HN discussion — petrusenko_max · 2026-09-19

1 near-duplicate retellings: moultano