Understanding AI newsletter by Timothy B. Lee: latest issues, cadence and price
by Timothy B. Lee · Substack · Free and paid · weekly · last issue Sep 17, 2026 · Active
Issues
20 on file since May 28, 202620 of 20 issues
About this newsletter
Explainers on how AI works and what it changes.
Free or paid
Free and paid on Substack. 67% of its latest 12 issues are for paying subscribers (from its public archive, checked weekly).
Issues per week, last 26 weeks
Issues by month
Writes about
AI and agents (16), Tech business and strategy (2), Policy and society (2) in the last six months.
Timothy B. Lee
Also from Timothy B. Lee: Latent Space, Lenny's Newsletter, Stratechery, TheSequence, Exponential View, Refactoring, The Pragmatic Engineer, Platformer, The Algorithmic Bridge, Data Engineering Weekly, Interconnects, Big Technology, Simon Willison's Newsletter, ChinAI, benn.substack, Import AI, Hacker Newsletter, Last Week in AI, The Chip Letter, SeattleDataGuy, One Useful Thing, Ahead of AI, AI as Normal Technology, Fabricated Knowledge
History
Listed on Newsletters Sep 24, 2026. No changes to its feed, price, platform, status or cadence since.
Sources: each newsletter's own public feed or archive, read weekly. Every issue belongs to its author and links to the original; people are shown by initials, never a photo. Logos via logo.dev; trademarks belong to their owners.