Open-source AI models newsletters

NewsletterFIT tracks 10 newsletters that cover Open-source AI models as a primary topic, all with posts in the last 90 days. By publicly shown subscriber count, the largest are AI PlanetX (1.1M), AI’s Safety Brain Drain: Why The Guardians Are Walking Away (100K) and AI & Tech Insights (58K).

Updated Oct 29, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    AI PlanetX 1.1M subscribers

    beehiiv Weekly · last post 17 days ago

    Likely audience: Product managers

  2. 2
    AI’s Safety Brain Drain: Why The Guardians Are Walking Away 100K subscribers

    beehiiv Weekly · last post 13 days ago

    Likely audience: Founders and operators of tech startups

  3. 3
    AI & Tech Insights 58K subscribers

    Substack Several times a week · last post 18 days ago

    Likely audience: Tech enthusiasts

  4. 4
    Nicholas Gruen 18K subscribers

    Substack Every two weeks · last post 12 days ago

    Likely audience: Tech policy analysts

  5. 5
    The Health Ranger's newsletter 17K subscribers

    Substack Every two weeks · last post 13 days ago

    Likely audience: ML engineers

  6. 6
    Projeckt AI 16K subscribers

    Substack Monthly or less · last post 16 days ago

    Likely audience: Product managers

  7. 7
    Imbue 9K subscribers

    Substack Monthly or less · last post 28 days ago

    Likely audience: Tech founders

  8. 8
    DeepTech & Science 4K subscribers

    Substack Every two weeks · last post 14 days ago

    Likely audience: Tech industry analysts

  9. 9
    Dispatches from the Autism Wars 1K subscribers

    Substack Monthly or less · last post 53 days ago

    Likely audience: AI detection software developers

  10. 10
    Xataka —

    Substack Every two weeks · last post 13 days ago

    Likely audience: Tech enthusiasts

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