r/slatestarcodex is a subreddit with 81k 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, politics, medicine, misc, and rationality.
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
: "An Ai Agent Published a Hit Piece on Me - More Things Have Happened"
36 posts
#3
Worst
11 posts
#4
Philosophy
9 posts
#5
Technology
8 posts
#6
Hate
6 posts
#7
Intelligence
: "The 2028 Global Intelligence Crisis"
6 posts
#8
Writing
5 posts
#9
Future
: "Oh my lord. A doubling in METR time task horizon at ~2 months. What implications does this have for AI 2027?"
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
: "Now is a great time to cancel your OpenAI/ChatGPT account and switch to Claude"
26 posts
#2
Politics
: "Another reason for "crime is declining, but people believe it’s getting worse""
6 posts
#3
Medicine
: "My Willing Complicity In "Human Rights Abuse""
5 posts
#4
Misc
: "Does anyone know the best evidence-based ways of fighting against physical and cognitive decline as we age?"
5 posts
#5
Rationality
: "Contra The Usual Interpretation Of “The Whispering Earring”"
5 posts
#6
Psychiatry
: "Chesterton's Pill"
3 posts
#7
Fun Thread
: "My journey to the microwave alternate timeline — LessWrong"
3 posts
#8
Science
: "No, we haven’t uploaded a fly yet"
3 posts
#9
Existential Risk
: "Sam Altman May Control Our Future—Can He Be Trusted?"
3 posts
#10
Senpai noticed~
: "Scott is in the Epstein files!"
2 posts
Member Growth in r/slatestarcodex
Yearly
+10k members(14.2%)
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Last updated: June 15, 2026