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OpenAI's GPT-6 Astra cracks two long-unsolved WWI and WWII German ciphers

The Decoder reports the Enigma decryption claim and its methodology

1 Sep 17 5:45 AM · 10d ago · 1 article · 1 post · 2 sources · development 1 of 5

The outlet details how Leffen's AI agents used a known-plaintext crib ('Rosenow', repeated in an already-solved same-day message) and Enigma's rule that a letter never encrypts to itself to narrow down the key, producing coherent German text including typos consistent with an authentic wartime operator error.

The Decoder reports the Enigma decryption claim and its methodology
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“99 times more effort into building the website that describes the problem and the solution than into actually cracking the code.”

Carter Leffen

Carter Leffen Product development coach, Bloomberg LPGPT-6 Astra OpenAI AI modelOpenAI Developer of GPT-6 Astragwintrob (PrinzAI blog) Author of the WWI cipher case study@deredleritt3r Poster who announced the WWI cipher decryption on X

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Peak 25 pieces in 3h at Sep 22, 9 AM; 108 pieces over 11 days (10 articles · 22 posts · 76 comments) Sep 16, 9 PM — 1 piece · 1 post — X 1Sep 17, 12 AM — quietSep 17, 3 AM — 2 pieces · 1 article · 1 post — Hacker News 1, Newswires 1Sep 17, 6 AM — quietSep 17, 9 AM — 1 piece · 1 post — X 1Sep 17, 12 PM — 1 piece · 1 post — Hacker News 1Sep 17, 3 PM — quietSep 17, 6 PM — 1 piece · 1 post — X 1Sep 17, 9 PM — quietSep 18, 12 AM — 1 piece · 1 post — Hacker News 1Sep 18, 3 AM — quietSep 18, 6 AM — quietSep 18, 9 AM — quietSep 18, 12 PM — quietSep 18, 3 PM — 1 piece · 1 post — Hacker News 1Sep 18, 6 PM — quietSep 18, 9 PM — quietSep 19, 12 AM — 8 pieces · 2 articles · 2 posts · 4 comments — Hacker News 5, Newswires 2, Mastodon 1Sep 19, 3 AM — 10 pieces · 2 posts · 8 comments — Hacker News 5, Lobsters 4, Mastodon 1Sep 19, 6 AM — 9 pieces · 9 comments — Hacker News 6, Lobsters 3Sep 19, 9 AM — 9 pieces · 1 article · 3 posts · 5 comments — Hacker News 6, Lobsters 1, Mastodon 1, +1 moreSep 19, 12 PM — 6 pieces · 6 comments — Hacker News 5, Lobsters 1Sep 19, 3 PM — 2 pieces · 2 comments — Lobsters 2Sep 19, 6 PM — 2 pieces · 1 post · 1 comment — Hacker News 1, Reddit 1Sep 19, 9 PM — 1 piece · 1 comment — Lobsters 1Sep 20, 12 AM — 2 pieces · 1 post · 1 comment — Mastodon 1, Hacker News 1Sep 20, 3 AM — quietSep 20, 6 AM — quietSep 20, 9 AM — quietSep 20, 12 PM — quietSep 20, 3 PM — quietSep 20, 6 PM — quietSep 20, 9 PM — 1 piece · 1 comment — Reddit 1Sep 21, 12 AM — 5 pieces · 3 articles · 2 posts — Newswires 3, Mastodon 1, X 1Sep 21, 3 AM — quietSep 21, 6 AM — quietSep 21, 9 AM — quietSep 21, 12 PM — quietSep 21, 3 PM — quietSep 21, 6 PM — quietSep 21, 9 PM — quietSep 22, 12 AM — quietSep 22, 3 AM — quietSep 22, 6 AM — 1 piece · 1 article — Newswires 1Sep 22, 9 AM — 25 pieces · 2 articles · 2 posts · 21 comments — Hacker News 22, Newswires 2, Mastodon 1Sep 22, 12 PM — 8 pieces · 8 comments — Hacker News 8Sep 22, 3 PM — 3 pieces · 1 post · 2 comments — Hacker News 2, Mastodon 1Sep 22, 6 PM — quietSep 22, 9 PM — quietSep 23, 12 AM — quietSep 23, 3 AM — 1 piece · 1 comment — Hacker News 1Sep 23, 6 AM — 5 pieces · 5 comments — Hacker News 5Sep 23, 9 AM — quietSep 23, 12 PM — 1 piece · 1 post — Hacker News 1Sep 23, 3 PM — quietSep 23, 6 PM — quietSep 23, 9 PM — quietSep 24, 12 AM — quietSep 24, 3 AM — quietSep 24, 6 AM — quietSep 24, 9 AM — quietSep 24, 12 PM — quietSep 24, 3 PM — quietSep 24, 6 PM — quietSep 24, 9 PM — quietSep 25, 12 AM — quietSep 25, 3 AM — quietSep 25, 6 AM — 1 piece · 1 comment — Hacker News 1Sep 25, 9 AM — quietSep 25, 12 PM — quietSep 25, 3 PM — quietSep 25, 6 PM — quietSep 25, 9 PM — quietYesterday, 12 AM — quietYesterday, 3 AM — quietYesterday, 6 AM — quietYesterday, 9 AM — quietYesterday, 12 PM — quietYesterday, 3 PM — quietYesterday, 6 PM — quietYesterday, 9 PM — quietToday, 12 AM — quietToday, 3 AM — quietToday, 6 AM — quietToday, 9 AM — quietToday, 12 PM — quiet 1–45
1–4The Decoder reports the Enigma decryption…5WWI cipher solve claim spreads further on…
Sep 17Sep 18Sep 19Sep 20Sep 21Sep 22Sep 23Sep 24Sep 25yesterdaynow · 2:39 PM ET

Reported in the same hours no headline names this development itself — these 1 claim were published in its stretch

  1. 1 outlet OpenAI's GPT-6 Astra decrypts a Nazi radio message in ten hours that went unsolved for 83 years

    first by The Decoder, 10d ago

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All 5 developments of OpenAI's GPT-6 Astra cracks two long-unsolved WWI and WWII… →

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