r/slatestarcodex is a subreddit with 85k members. The community frequently discusses looking for, ai, worst, philosophy, and technology, and they frequently recommend/review simulation software, charities, and nootropic, and the most common flair used is ai, medicine, existential risk, rationality, and fiction.
Slate Star Codex was the former name for a blog by Scott Alexander about human cognition, politics, and medicine. In 2021, the name was changed to Astral Codex Ten: https://astralcodexten.substack.com/
Popular Topics in r/slatestarcodex
#1
Looking For
36 posts
#2
Ai
36 posts
#3
Worst
11 posts
#4
Philosophy
9 posts
#5
Technology
8 posts
#6
Hate
6 posts
#7
Intelligence
6 posts
#8
Writing
5 posts
#9
Future
5 posts
#10
Ethics
4 posts
Products Discussed in r/slatestarcodex
Simulation Software
1 review
#1
Microsoft Excel
3.0★ from 1 review
Charities
1 review
#1
Giving What We Can
5.0★ from 1 review
Nootropic
1 review
#1
Cerebrolysin
4.0★ from 1 review
Flair Used in r/slatestarcodex
#1
AI
: "Sparks of Weight-Space Programming: LLMs can natively read & write neural network weights"
8 posts
#2
Medicine
: "5 years later, what are your results and opinions of GLP-1 drugs ?"
3 posts
#3
Existential Risk
: "From LW: the scale of the AI buildout should make us take existential risks more seriously."
2 posts
#4
Rationality
: "The sound in your stream that leaks where you live — The Doxicology Report, Case 01"
2 posts
#5
Fiction
: "The Witching Hour | Slate Star Codex"
1 post
#6
Misc
: "PhysicsForums and the Dead Internet Theory"
1 post
#7
Politics
: "My (not Scott's) 2026 California ballot"
1 post
#8
Meta
: "What's your PC setup like? Can we do a "SSC battlestations" thread?"
1 post
#9
Effective Altruism
: "Sea Otters are so cute I can't even"
1 post
#10
Philosophy
: "Psychophysical Harmony strongly argues AGAINST God"
1 post
Member Growth in r/slatestarcodex
Yearly
+11k members(14.5%)
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Last updated: November 9, 2026