Newslettersby GlyphAI Supremacy newsletter by Michael Spencer: latest issues, cadence and price
by Michael Spencer · Substack · Free and paid · 3 a week · last issue Nov 9, 2026 · Active
A newsletter by Michael Spencer, mostly on AI and agents.
Today1 issue
Thu Nov 51 issue
Tue Nov 31 issue
Thu Oct 291 issue
Wed Oct 281 issue
Tue Oct 271 issue
Fri Oct 231 issue
Thu Oct 221 issue
Wed Oct 211 issue
Tue Oct 201 issue
Wed Oct 141 issue
Mon Oct 121 issue
Fri Oct 91 issue
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Mon Oct 51 issue
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Fri Sep 181 issue
Wed Sep 161 issue
Mon Sep 141 issue
Fri Sep 111 issue
39 issues on file since Jul 30, 2026; every one is in its own archive ↗.
About this newsletter
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Michael Spencer: Author photo, from AI Supremacy
Free or paid
Free and paid on Substack. 58% of its latest 12 issues are for paying subscribers (from its public archive, checked weekly).
Issues per week, last 26 weeks
3 a week, measured over the last six months (or since the feed's oldest issue)
Issues by month
Writes about
AI and agents (36), Tech business and strategy (3) in the last six months.