AI assistants newsletters

NewsletterFIT tracks 5 newsletters that cover AI assistants as a primary topic, 4 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Product Teardowns (19K) and Rational in the Fullness of Time (14K).

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

  1. 1
    Product Teardowns 19K subscribers

    Substack Every two weeks · last post 28 days ago

    Likely audience: Product managers

  2. 2
    Rational in the Fullness of Time 14K subscribers

    Substack Monthly or less · last post 32 days ago

    Likely audience: Startup founders

  3. 3
    Julianne's Newsletter —

    Substack Monthly or less · last post 31 days ago

    Likely audience: productivity enthusiasts

  4. 4
    In Bits and Bytes —

    Substack Monthly or less · last post 56 days ago

    Likely audience: Software engineers

  5. 5
    Andrew’s Newsletter —

    Substack last post Apr 15, 2024

    Likely audience: Product managers evaluating SaaS pivots

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