- C Andrew Critch @critch.bsky.social Human being. Trying to do good. CEO @ Encultured AI. AI Researcher @ UC Berkeley. Listed bday is approximate ;)
Tom Everitt @tom4everitt.bsky.social AGI safety researcher at Google DeepMind, leading causalincentives.com
Personal website: tomeveritt.se
Murray Shanahan @mpshanahan.bsky.social Professor at Imperial College London and Principal Scientist at Google DeepMind. Posting in a personal capacity. To send me a message please use email.
Alex Turner @turntrout.bsky.social Research scientist at Google DeepMind. All opinions are my own. Vegan, 10% of my income pledged to effective charities (GWWC)
https://turntrout.com
akbir khan @akbir.bsky.social dumbest overseer at @anthropic
https://www.akbir.dev
Arthur Conmy @arthurconmy.bsky.social Aspiring 10x reverse engineer at Google DeepMind
Alex Irpan @alexirpan.bsky.social Research Scientist @ Google DeepMind. Formerly Robotics, now AI Safety. Has a blog. Views are my own.
Eric Neyman @ericneyman.bsky.social Professional reference class tennis player. I like non-fillet frozen fish, packaged medicaments, and other oily seeds.
Samuel Albanie @samuelalbanie.bsky.social 
@neelnanda.bsky.social @neelnanda.bsky.social 
David Lindner @davidlindner.bsky.social Making AI safer at Google DeepMind
davidlindner.me
Elliott Thornley @elliottthornley.bsky.social Research Fellow at Oxford University's Global Priorities Institute.
Working on the philosophy of AI.
Mor Geva @megamor2.bsky.social https://mega002.github.io
@dwarkesh.bsky.social @dwarkesh.bsky.social 
dylan matthews @dylanmatt.bsky.social i write for vox
Nathan @handle.invalid Geopolitics, prediction markets. FLF Fellow. Capital case tweets are literal, others less. I like most people when I meet them.
Alyssa Vance @alyssavance.bsky.social Senior Data Scientist, Blue Rose Research. Futurist, neophile, machine explorer. alyssamvance@gmail.com
Aaron Bergman @aaronbergman18.bsky.social ๐: suffering | ๐: EA, AI alignment, decoupling, R, cringe, amateur pharmacology + programming | Georgetown '22 (math+econ+phil) | Career status: ๐คทโโ๏ธ
Sean O hEigeartaigh @sean-o-h.bsky.social Academic, AI nerd and science nerd more broadly. Currently obsessed with stravinsky (not sure how that happened).
@jackclarksf.bsky.social @jackclarksf.bsky.social Anthropic and Import AI. Previously OpenAI, Bloomberg, The Register. Weird futures.
Jeff Sebo @jeffsebo.bsky.social Associate Professor of Environmental Studies, Director of the Center for Environmental and Animal Protection, Director of the Center for Mind, Ethics, and Policy, and Co-Director of the Wild Animal Welfare Program, New York University. jeffsebo.net
Meghan Barrett, PhD @beebytes.bsky.social Asst Prof of Bio @ IUPUI; Director of the Insect Welfare Research Society; Insect neuroscience, farmed insect welfare meghan-barrett.com
opinions mine & do not reflect views of IUPUI
George McGowan @gjmcgowan.bsky.social 
@esyudkowsky.bsky.social @esyudkowsky.bsky.social 
Tim Duffy @timfduffy.com I like utilitarianism, consciousness, AI, EA, space, kindness, liberalism, longtermism, progressive rock, economics, and most people. Substack: http://timfduffy.substack.com
Max Alexander @absurdlymax.bsky.social I do philosophy and a little math, also Effective Altruism. Every day things can get a bit better
Ruxandra Teslo @ruxandrabio.bsky.social Biologist
Andy Masley @andymasley.bsky.social When the going gets weird the weird turn pro.
Researching and writing about AI and other topics from a broadly effective altruist perspective. On a grant from Coefficient Giving.
andymasley.com
Lauren Gilbert @lgilbert.co researcher, writer, projects georg. currently: editor, indevelopmentmag.com; writer, laurenpolicy.com.
Frances Lorenz @franceslorenz.bsky.social Claude says I process my emotions externally.
Arjun Panickssery @panickssery.bsky.social Effective Altruism | Spaced Repetition | Quoting Old Books | PELTIV Score of 190 (+6ฯ) | http://arjunpanickssery.substack.com
Inรฉs @ines.bsky.social twitter import
Agus ๐๐ธ @agucova.bsky.social Accelerate AI safety.
๐ agus.sh
Tom Chivers @tomchivers.bsky.social "Far too nice to be a journalist," per Terry Pratchett. Lead writer on Semafor's Flagship newsletter. DMs open; chiversthomas(a)gmail.
Latest book, Everything is Predictable: geni.us/EIPBook
Podcast, The Studies Show: https://www.thestudiesshowpod.com
Daniel Filan ๐ @danielfilan.com I'm mostly on superstimul.us now (profile is @sloeb) (also Twitter)
Jonathan Birch @birchlse.bsky.social Professor, LSE. Philosophy of science, animal consciousness, animal ethics. Director of The Jeremy Coller Centre for Animal Sentience.
Alessandro @poli.sisti.ca Posts on public policy (in ๐จ๐ฆ or abroad), humanities, classical music, altruism effective and ineffective. Many silly posts. Toronto-adjacent.
Astral Codex Ten | Scott Alexander | Substack [Unofficial] @astralcodexten.com.web.brid.gy P(A|B) = [P(A)*P(B|A)]/P(B), all the rest is commentary. Click to read Astral Codex Ten, by Scott Alexander, a Substack publication.
๐ bridged from ๐ https://astralcodexten.com/: https://fed.brid.gy/web/astralcodexten.com
Alex Hill @alexlizhill.com Former logician. Aspiring health economist. Research fellow @lshtm-gheco.bsky.social. Thinking about philosophy, public health, econ, stats, feminism, & lots of other things!
https://alexlizhill.com
Rosie @rosiecampbell.xyz Forever expanding my nerd/bimbo Pareto frontier. Ex-OpenAI, AGI safety and governance, fellow @rootsofprogress.
Carl Robichaud @carlrobi.bsky.social Program Officer on nuclear policy at Longview Philanthropy (http://longview.org). Opinions are my own.
Michael Plant @michaeldplant.bsky.social Moral philosopher and happiness nerd. Founder and Director, Happier Lives Institute. Postdoctoral Fellow, Oxford Unviersity. All views yours, weirdly.
Ben Grodeck๐ธ @benleoecon.bsky.social Assistant Professor (Clinical) at Purdue University | Experimental & Behavioural Econ | Interested in Altruism, Cooperation, and Morality | PhD from Monash University | Former Postdoc at University of Exeter & MPI
https://sites.google.com/view/bengrodeck
Tim Hua @timhua.bsky.social Helping people is good I guess
Trying to do AI interp and control
Used to do economics
timhua.me
Bella Forristal @bellaforristal.bsky.social I was so close to 1k Twitter followers but here we are ยฏ\_(ใ)_/ยฏ
Effective altruism, veganism, various weakly-held takes on things | she/her | https://admonymous.co/bellaforristal
Fabio Kuhn ๐ธ @mordaroso.bsky.social Director of Tech at Giving What We Can and Software Engineer at Giving Multiplier
80,000 Hours @80000hours.bsky.social You have 80,000 hours in your career.
This makes it your best opportunity to have a positive impact on the world.
https://80000hours.org
arthur wrong ๐ธ๐ฑ @arthurwright.bsky.social Dilettante interested in econ, animal liberation, progress, philosophy, Buddhism // EA-adjacent (Head of Community @ Effective Altruism DC) // Views my own, etc
Quinoah ๐โธ๏ธ @noahtopper.bsky.social yudkowsky's bulldog
Josh You @justjoshinyou.bsky.social researcher at Epoch AI. Views my own ๐ธ
tetra ๐โน๏ธ๐บ๐ณ @thetetra.space ๐ here to believe true things and do good actions ๐ someone should probably solve AI alignment ๐ enjoying things rules! โ๏ธ but it's not snowing now
english/toki pona/ๆฅๆฌ่ช
Ryan Briggs @ryancbriggs.net Raising kids & bread & grant money. Cleaning data & diapers & fish. EA (bed nets, not light cone). Social scientist. typos. twitter.com/ryancbriggs
David Pearce @davidpearce.bsky.social Letโs use biotech to engineer paradise:
hedweb.com
https://x.com/webmasterdave
https://www.bltc.com/bltc-websites.html
https://en.wikipedia.org/wiki/David_Pearce_(philosopher)
Shakeel @shakeelhashim.com Writing about AI policy at Transformer. Supporting AI journalism with grants at Tarbell. Prev: AI safety and EA comms; journalist at The Economist, Protocol, Finimize. London.
https://transformernews.ai
Karen Levy @kareninkenya.bsky.social Founding Partner, Fit for Purpose. Proud Nairobian; mtoto wa pwani. Evidence seeker, social entrepreneur, up-scaler, worm slayer. Brown, LSE, YCombinator.
Dr Noemi Dreksler @noemidreksler.bsky.social Senior Research Fellow at the Centre for the Governance of AI | Public and expert opinion of AI | AI Risk Management
1Day Sooner @1daysooner.bsky.social 1Day Sooner leads campaigns in science, policy, and bioethics to stop the worldโs most harmful infectious diseases. We advocate for volunteers who participate in high-impact medical studies, including human challenge studies. www.1daysooner.org 
Matt Reardon @mjreard.bsky.social Programs at LawAI. Frmly 80000 Hours.
young_opsimath โธ๏ธ @opsimath.bsky.social An Effective Altruist in grad school who's interested in catastrophic risk reduction and the welfare of non-human animals.
Vidur Kapur @vidurkapur.bsky.social Superforecaster at Good Judgment. Also forecasting at Swift Centre, Samotsvety, RAND and a hedge fund.
Grace @gracekind.net A latent space odyssey
gracekind.net
Richard Y Chappell๐ธ @rychappell.bsky.social Philosophy prof. Posts better stuff at www.goodthoughts.blog
๐ธ10% Pledge #54 with @GivingWhatWeCan
Jacob Peacock @jacobpeacock.bsky.social Research Advisor at Stanford focused on improving animal welfare. Quantitative social scientist & ex-computational biologist. Open science and anti-speciesism. Views mine.
harry law @harrylaw.bsky.social Thinking about thinking machines | University of Cambridge and Leverhulme Centre for the Future of Intelligence | Previously Google DeepMind
Chris Webster ๐ถ @handle.invalid I do infosec and IT work for Open Phil.
Trying to get better at lifting weights, making cocktails, and Magic: The Gathering.
Blog at christopher-webster.com โ๏ธ- T Zvi Mowshowitz @thezvi.bsky.social Blog at thezvi.substack.com, this is a pure backup, same handle on Twitter.
Michael Wiebe @michaelwiebe.bsky.social Economics (PhD UBC), yimby, replication, effective altruism. blog.michaelwiebe.com
Malo Bourgon @malo.online CEO at Machine Intelligence Research Institute (MIRI, @intelligence.org)
Trevor Levin @trevorlevin.bsky.social Trying to help the world navigate potentially transformative technologies, currently via AI Governance and Policy at Coefficient Giving. Enjoyer of acoustic guitars, history books, and plant-based foods.
Habiba Banu ๐ธ @habibabanu.bsky.social Co-founder http://spiro.ngo - TB screening and prevention charity focused on children
๐ธ 10% Pledge #103 with @givingwhatwecan.bsky.social
Giving What We Can๐ธ @givingwhatwecan.bsky.social Home of the ๐ธ10% Pledge | Creating a global community who gives effectively and significantly
Buck Shlegeris @bshlgrs.bsky.social 
Lynette Bye @lynettebye.bsky.social 
Paul Crowley @ciphergoth.org I don't really come here any more sorry!
Julia Wise @juliawise.bsky.social Trying for human-compatible humans
EA Paddington๐ธ๐๐๐ณ๐๐งณ๐ @eapaddington.bsky.social I like marmalade, friends, effective opportunities for doing good, and marmalade
Alexander Berger @albrgr.bsky.social CEO of Coefficient Giving
Peter Hartree @peterhartree.bsky.social Something happening.
http://type3.audio, http://radiobostrom.com, http://thevalmy.com
http://notes.pjh.is, http://sun.pjh.is, http://mtv.pjh.is
http://inboxwhenready.org, http://comment-helper.org
Toby Ord @tobyord.bsky.social Senior Researcher at Oxford University.
Author โ The Precipice: Existential Risk and the Future of Humanity.
tobyord.com
David Lawrence @davidlawrenceuk.bsky.social Shooting for UK growth & progress with @britishprogress.org
Previously: Chatham House research fellow and Labour parliamentary candidate.
Britain could have the highest living standards in the world!
Alex Savard ๐ธ @visably.bsky.social Designing for good.
๐ธ Giving 10% at GivingWhatWeCan.org
Ben Stewart ๐ธ @benstew.bsky.social AI Program Officer at Longview Philanthropy. Own views.
๐ธ giving 10% of my lifetime income to effective charities via Giving What We Can
Saloni @scientificdiscovery.dev Co-founder & editor, Works in Progress. Writer, Scientific Discovery. Podcaster, Hard Drugs. Advisor, Coefficient Giving.
Newsletter: https://scientificdiscovery.dev
Podcast: https://harddrugs.worksinprogress.co
๐ณ๏ธโ๐
Aaron Gertler @aarongertler.bsky.social Comms officer @ Open Philanthropy, former Magic pro, webfiction connoisseur. https://aarongertler.net/
Jake Eaton @jakee.bsky.social editing @asteriskmag.bsky.social
writing anzalogue.xyz
Our World in Data @ourworldindata.org Our World in Data is a free, nonprofit website with a mission to increase understanding of the worldโs largest problems and drive informed action to solve them. Based out of Oxford University (@ox.ac.uk), founded by @maxroser.bsky.social.
Senator Scott Wiener @scottwiener.bsky.social 6โ7โ California State Senator representing San Francisco ๐ณ๏ธโ๐ โก๏ธ
Policy nerd & chronic legislative overachiever ๐ค
Running for Congress to protect our democracy ๐
Vote Nov. 3, 2026 ๐ณ๏ธ
Get involved โฌ๏ธ
https://linktr.ee/scottwiener
Hugo Mercier @hugoreasoning.bsky.social Evolutionary and cognitive psychologist. Author, Not Born Yesterday (http://tinyurl.com/yyh929ns), The Enigma of Reason (http://tinyurl.com/6hbpn84).
Matt Levine @mattlevine.bsky.social So back
Ethan Mollick @emollick.bsky.social Professor at Wharton, studying AI and its implications for education, entrepreneurship, and work. Author of Co-Intelligence.
Book: https://a.co/d/bC2kSj1
Substack: https://www.oneusefulthing.org/
Web: https://mgmt.wharton.upenn.edu/profile/emollick
Samuel Hammond @hamandcheese.bsky.social Social policy synthesizer. www.secondbest.ca
Anastasia Gamick @anastasiag.bsky.social 
William Eden @weden.bsky.social 
Sam Bowman @sleepinyourhat.bsky.social AI safety at Anthropic, on leave from a faculty job at NYU.
Views not employers'.
I think you should join Giving What We Can.
cims.nyu.edu/~sbowman
SLIME MOLD TIME MOLD @slimemoldtimemold.bsky.social "If one does not expect it, one will not find out the unexpected;
It is not to be tracked down and no path leads us to it."
slimemoldtimemold.com
patreon.com/slimemoldtimemold
Allison Portnoy @aportnoy.bsky.social Asst Prof @BUSPH Global Health | affiliate @decisionscience @HarvardChanSPH | @vaccineimpact and economic modeling | health equity | SFF nerd | she/her
Suzi Jamil @suzijamil.bsky.social 
Chris Olah @colah.bsky.social Reverse engineering neural networks at Anthropic. Previously Distill, OpenAI, Google Brain.Personal account.
Lewis Dartnell @lewisdartnell.bsky.social Prof., astrobiology researcher, science communicator & book author (http://beinghumanbook.org / http://originsbook.com / http://the-knowledge.org)
Richard Fisher @richardfisher.bsky.social Senior Editor, Aeon | Author of non-fiction book The Long View | Honorary professor in science communication, UCL | Formerly: BBC Future, MIT Knight Science Journalism fellow, New Scientist | https://richardfisher.carrd.co