reinforcement learning newsletters

NewsletterFIT tracks 13 newsletters that cover reinforcement learning as a primary topic, 8 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are AI+ Community (42K), Only Dead Fish (14K) and Physical AI: robots, scientific computing, and digital twins (8K).

Updated Oct 30, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    AI+ Community 42K subscribers

    Substack Every two weeks · last post 16 days ago

    Likely audience: Product managers

  2. 2
    Only Dead Fish 14K subscribers

    Substack Every two weeks · last post 13 days ago

    Likely audience: AI researchers and engineers

  3. 3
    Physical AI: robots, scientific computing, and digital twins 8K subscribers

    Substack Every two weeks · last post 9 days ago

    Likely audience: Robotics researchers

  4. 4
    Benjamin Todd 6K subscribers

    Substack Monthly or less · last post 48 days ago

    Likely audience: AI safety researchers

  5. 5
    Data Tinkerer 3K subscribers

    Substack Monthly or less · last post 14 days ago

    Likely audience: Data scientists

  6. 6
    General Robots 3K subscribers

    Substack last post Jul 6, 2026

    Likely audience: Robotics researchers

  7. 7
    RoboPapers 1K subscribers

    Substack Every two weeks · last post 20 days ago

    Likely audience: Robotics researchers

  8. 8
    AI Scientist —

    Substack Every two weeks · last post 13 days ago

    Likely audience: AI researchers

  9. 9
    Beyond the Cloud —

    LinkedIn Every two weeks · last post 7 days ago

    Likely audience: ML engineers

  10. 10
    Gwern.net Newsletter 20K subscribers

    Substack last post Jun 11, 2021

    Likely audience: AI researchers

  11. 11
    Learning and Control 4K subscribers

    Substack last post Jul 21, 2025

    Likely audience: AI researchers

  12. 12
    Condensing the Cloud 2K subscribers

    Substack last post Aug 22, 2025

    Likely audience: Enterprise IT leaders

  13. 13
    David’s Substack —

    Substack last post Aug 13, 2025

    Likely audience: ML researchers

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