AI agent architecture newsletters

NewsletterFIT tracks 11 newsletters that cover AI agent architecture as a primary topic, 10 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Digital Native (73K), AI Agents Simplified (58K) and Kaspar von Grünberg (48K). Brands detected sponsoring these newsletters recently include CircleCI, HubSpot and EZ Texting.

Updated Nov 1, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Digital Native73K subscribers

    Substacklast post Jul 22, 2026

    Likely audience: Product managers

  2. 2
    AI Agents Simplified58K subscribers

    SubstackWeekly · last post 16 days ago

    Likely audience: ML engineers

    Sponsors detected: HubSpot, CircleCI, EZ Texting

  3. 3
    Kaspar von Grünberg48K subscribers

    SubstackMonthly or less · last post 29 days ago

    Likely audience: CTOs

  4. 4
    AI觀察日記 AI未來週報 | (AI觀察家 訂閱計劃)21K subscribers

    SubstackSeveral times a week · last post 17 days ago

    Likely audience: Product Managers

  5. 5
    Becoming Human AI17K subscribers

    SubstackMonthly or less · last post Aug 22, 2026

    Likely audience: AI researchers

  6. 6
    YWR: Your Weekend Reading8K subscribers

    SubstackEvery two weeks · last post 12 days ago

    Likely audience: Portfolio managers

  7. 7
    The Python Coding Stack8K subscribers

    SubstackEvery two weeks · last post 14 days ago

    Likely audience: ML engineers

  8. 8
    Danica's Substack | Data Science, AI & Career5K subscribers

    SubstackEvery two weeks · last post 11 days ago

    Likely audience: Career changers

  9. 9
    Founder Therapy—

    SubstackEvery two weeks · last post 16 days ago

    Likely audience: Founders

  10. 10
    AI & Cloud Weekly—

    SubstackMonthly or less · last post 24 days ago

    Likely audience: ML engineers

  11. 11
    Olivier ALESSANDRI : Parole d'expert—

    SubstackMonthly or less · last post Aug 3, 2026

    Likely audience: ML engineers

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