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Carter Leffen

2 stories mentioning Carter Leffen, newest first, each with its sources and discussion. Follow to see new ones on your front page.

  1. Research new

    OpenAI’s Astra and Anthropic’s Opus break two unsolved Enigma messages

    Two cryptanalysts used OpenAI’s GPT-6 Astra and Anthropic’s Claude Opus 5 to decode two long-unsolved Enigma-encoded messages from World War II. Carter Leffen prompted Astra to find and break a message that had stumped…

    1 source
    TechCrunch AI
  2. Research new

    OpenAI's GPT-6 Astra decrypts 83‑year‑old Nazi Enigma message in ten hours

    A Bloomberg developer, Carter Leffen, used OpenAI’s GPT‑6 Astra “Extra High” variant to crack a 1941 German Enigma‑encrypted radio transmission that had stumped historians for 83 years. The 82‑character message, sent…

    1 source
    The Decoder

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OpenAI’s Astra and Anthropic’s Opus break two unsolved Enigma messages (25 September 2026).

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