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LessOnline Festival
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LessOnline is a community festival for rationalists and EA-adjacent thinkers; tangentially relevant to AI safety as a networking and intellectual community event, not a primary technical or policy resource.
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Summary
LessOnline is an annual in-person festival for the rationalist and EA community, centered around ideas from LessWrong, Overcoming Bias, and the broader rationalist blogosphere. It brings together writers, thinkers, and readers for talks, discussions, and community building. The event focuses on epistemic practices, forecasting, AI risk, and rationalist culture.
Key Points
- •Annual gathering for the LessWrong/rationalist community featuring talks and workshops
- •Covers topics including AI safety, epistemics, forecasting, and decision theory
- •Serves as a community hub connecting online rationalist writers with their readership
- •Associated with the broader EA and AI safety intellectual community
- •Provides in-person networking and discussion opportunities for AI safety researchers and rationalists
Cited by 1 page
| Page | Type | Quality |
|---|---|---|
| Lighthaven (Event Venue) | Organization | 40.0 |
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LessOnline 2026 LessOnline
“A Festival of Writers Who Are Wrong on the Internet”
June 5 – 7, 2026 · Berkeley, CA
What Is LessOnline?
LessOnline is a festival celebrating truthseeking and blogging. It’s an opportunity to meet people you’ve only ever known by their LessWrong username or Substack handle.
The goal is to bring together a “mostly-online subculture of people trying to work together to figure out how to distinguish truth from falsehood using insights from probability theory, cognitive science, and AI.”
The weekend will be filled with talks, workshops, dance parties, and late-night conversations around the fireside.
This is the third year of LessOnline. Last year over 700 people attended, and we’re expecting roughly the same number this year.
Some Writings We Love
The sites below embody the virtues we are celebrating. Each author below has been offered a free ticket
indicates attending Show only attending authors A Collection of Unmitigated Pedantry A Song for Two Voices | Swimmer963 Abram Demski Abstraction Aceso Under Glass Agenty Duck Agnes Callard Alex Altair Alicorn Anders Sandberg Andrew Critch Andy Matuschak Anna Salamon Applied Divinity Studies Arjun Panickssery Artificially Intelligent Asterisk Astral Codex Ten | UNSONG Bayesian Investor Becoming Eden Ben Landau-Taylor Best Jelly Bet On It Bits about Money Black Belt Bayesian Bounded Regret Brangus Buck Shlegeris Carcinisation CGP Grey Cold Takes Compass Rose Dan Luu Daniel Kokotajlo David Friedman Daystar Eld | Pokemon: TOoS De Novo Death is Bad Dominic Cummings Dynomight Escaping Flatland Eukaryote Writes Blog Everything Studies Experimental History Friendship Is Optimal Gene Smith Gold Takes Gwern Homo Economicus Homo Sabiens | r!Animorphs Information Processing J. D. Pressman Janus Jeff Kaufman Jenneral HQ Joe Carlsmith John Salvatier John Wentworth Kaj Sotala Knowingless Linch Marginal Revolution Martin Sustrik Max Harms Maximum Progress Meaningness Melting Asphalt | Elephant in the Brain Messy Matters Michael's Notebook Minding our way Money Stuff Mother of Learning | Domagoj Kurmaic Mr. & Mrs. Psmith Musings and Rough Drafts NCase Nick Bostrom Nintil Nostalgebraist Nothing Is Mere OKTrends Optimize Everything Otherwise Overcoming Bias Owain Evans Paul Graham Philosophical Multicore Planecrash | lintamande Planned Obsolescence Progress and Poverty PutANumOnIt Quaternion Daydreams Radimentary Ribbon Farm Rival Voices Robert Miles Roots of Progress Rough Diamonds Ryan Greenblatt sam[ ]zdat Scott Garrabrant Screwtape Shtetl Optimized Silver Bulletin Singal-Minded Skunk Ledger Slime Mold Time Mold SMBC Stefan's Substack Steven Byrnes Telescopic Turnip The Diff The Future of Statistical Modeling The Last Psychiatrist The Merely Real The Money Illusion The n-Category Cafe The Sequences | HPMOR The Sideways View The Unit of Caring TheZvi | Don't Worry About The Vase Thing of Things Tomas B. Unexpected Values Unstable Ontology UTOPIA, LOL? | Jamie
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