Luke Muehlhauser @lukeprog
Open Philanthropy Program Director, AI Governance and Policy lukeprog.com USA East Coast Joined March 2009-
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METR is a non-profit research organization, and we are actively fundraising! We prioritise independence and trustworthiness, which shapes both our research process and our funding options. To date, we have not accepted funding from frontier AI labs.
Excited to share details on two of our longest running and most effective safeguard collaborations, one with Anthropic and one with OpenAI. We've identified—and they've patched—a large number of vulnerabilities and together strengthened their safeguards. 🧵 1/6
Once again I would like to note that the nonprofit AI safety field is massively outgunned by the AI industry. wsj.com/politics/silic…
Once again I would like to note that the nonprofit AI safety field is massively outgunned by the AI industry. wsj.com/politics/silic…
Congratulations to Giving What We Can on reaching 10,000 pledgers who donate 10% of their income to high-impact charities! x.com/givingwhatweca…
Congratulations to Giving What We Can on reaching 10,000 pledgers who donate 10% of their income to high-impact charities! x.com/givingwhatweca… https://t.co/Wpr9ORcRlw
Exciting news! We saturated my $250,000 match! @patrickc is very generously contributing another $250,000 to extend the donation match! If we saturate Patrick’s match, we’ll have raised over $1 million dollars for @farmkind_giving! Thank you so much to the latest round of…
Exciting news! We saturated my $250,000 match! @patrickc is very generously contributing another $250,000 to extend the donation match! If we saturate Patrick’s match, we’ll have raised over $1 million dollars for @farmkind_giving! Thank you so much to the latest round of…
A quarter of a penny of charity per chicken.
A quarter of a penny of charity per chicken.
Nikolai Kapustin is the glorious musical future that Rhapsody in Blue promised us in 1924: open.spotify.com/playlist/61Ido…
New ~$20M multi-donor fund for AI alignment work! alignmentproject.aisi.gov.uk
Strongly agree with the conclusion of this @mattyglesias post - more people should be funding the YIMBY movement. (And we’re happy to be a resource to any other funders who’re interested!) Still early days but wracking up impressive successes left and right.
Europe will do anything to beat the heat except install air conditioning. bbc.com/news/articles/…
A hidden fire‑safety rule is quietly adding $1+ million to the price of many new apartment buildings. Crazy part? The gear it mandates has been used exactly once in a real US fire. Let’s unpack this 👇
Transformer continues to be the quickest way to keep up with the dozens of AI news stories that come out every week. Highly recommended! transformernews.ai/p/trumps-surpr…
Some people are pretending to doubt this, but e.g. the entire nonprofit AI safety ecosystem runs on much less than $1B/yr, whereas annual expenditures for just three leading AI companies (MSFT, GOOG, META) is >$450B/yr.
Some people are pretending to doubt this, but e.g. the entire nonprofit AI safety ecosystem runs on much less than $1B/yr, whereas annual expenditures for just three leading AI companies (MSFT, GOOG, META) is >$450B/yr.
I hate to break it to you @nvidia, but we actually looked into this a few years ago at @CSETGeorgetown. We combed through 66,000 of the PLA's actual purchase records. It turns out they *overwhelmingly* use your chips... And at the time, you didn't do anything about it. 😬
I hate to break it to you @nvidia, but we actually looked into this a few years ago at @CSETGeorgetown. We combed through 66,000 of the PLA's actual purchase records. It turns out they *overwhelmingly* use your chips... And at the time, you didn't do anything about it. 😬 https://t.co/7leCjGgd9v
1/ AI agents are increasingly being deployed for real-world tasks, but how safe are they in high-stakes settings? 🚨 NEW: OpenAgentSafety - A comprehensive framework for evaluating AI agent safety in realistic scenarios across eight critical risk categories. 🧵
Well, we're back to this point now. nytimes.com/2025/07/17/tec…
Well, we're back to this point now. nytimes.com/2025/07/17/tec…

Eliezer Yudkowsky ⏹... @ESYudkowsky
209K Followers 102 Following The original AI alignment person. Understanding the reasons it's difficult since 2003. This is my serious low-volume account. Follow @allTheYud for the rest.
Robin Hanson @robinhanson
113K Followers 726 Following Let’s skip witty banter & talk deep Qs. Books: https://t.co/hpZgEm55Ma https://t.co/iFs9C3IuOM Chief Scientist @_futarchy Advisor @MetaDAOProject @butterygg
Richard Ngo @RichardMCNgo
64K Followers 2K Following studying AI and trust. ex @openai/@googledeepmind
Stefan Schubert @StefanFSchubert
39K Followers 2K Following Effective Altruism and the Human Mind (with @LuciusCaviola) is available for free at: https://t.co/ozvdxlZiro
Kelsey Piper @KelseyTuoc
49K Followers 972 Following We're not doomed, we just have a big to-do list.
Rob Bensinger ⏹️ @robbensinger
13K Followers 395 Following Comms @MIRIBerkeley. RT = increased vague psychological association between myself and the tweet.
Peter Wildeford🇺�... @peterwildeford
22K Followers 321 Following Globally ranked top 20 forecaster 🎯 AI is not a normal technology. I'm working at @IAPSai to shape AI for global prosperity and human freedom.
Nathan 🔎 @NathanpmYoung
24K Followers 4K Following Geopolitics, prediction markets. If you think I'm wrong, community note me. Capital case tweets are literal, others less. I like most people when I meet them.
Dustin Moskovitz @moskov
72K Followers 499 Following
Qualy the lightbulb @QualyThe
10K Followers 323 Following Official Unofficial EA mascot. I'm here to make friends and maximise utility, and I'm all out of neglected altruistic opportunities
Michael Nielsen @michael_nielsen
110K Followers 6K Following Searching for the numinous 🇦🇺 🇨🇦, currently live in 🇺🇸 Research @AsteraInstitute https://t.co/maezekzRUb https://t.co/2dWwZKrvrn
Amanda Askell @AmandaAskell
54K Followers 657 Following Philosopher & ethicist trying to make AI be good @AnthropicAI. Personal account. All opinions come from my training data.
Rob Wiblin @robertwiblin
45K Followers 770 Following Host of the 80,000 Hours Podcast. Exploring the inviolate sphere of ideas one interview at a time: https://t.co/2YMw00bkIQ
Holly ⏸️ Elmore @ilex_ulmus
7K Followers 368 Following Dedicated to the protection and thriving of sentient beings. PhD in evo bio.🔸 Executive Director of @PauseAIUS. Opinions not necessarily those of the org.
Rob Miles @robertskmiles
34K Followers 828 Following Explaining AI Alignment to anyone who'll stand still for long enough, on YouTube and Discord. Music, movies, microcode, and high-speed pizza delivery
David Manheim @davidmanheim
10K Followers 2K Following Lecturer @TechnionLive, founder @alter_org_il, emeritus @superforecaster, PhD @PardeeRAND Optimistic on AI, pessimistic on humanity managing the risks well.
Spencer Greenberg �... @SpencrGreenberg
34K Followers 6K Following A mathematician/entrepreneur in social science. Tweets about psychology, society, rationality, tech, science, and philosophy. Founder of https://t.co/2YGraOwo77
Linch @LinchZhang
3K Followers 243 Following Founder and CEO, Open Asteroid Impact (https://t.co/UsO3MCTSOF). April 1st Launch! Also on substack: https://t.co/NkGEUNjdbu
Alexander Berger @albrgr
14K Followers 2K Following Enjoys a good applied micro paper. CEO of @open_phil. Views my own, tweets self-destruct every once in a while.
Ray Roessing @RRoessing16380
2 Followers 233 Following
Matthew Sheffield @mattsheffield
49K Followers 3K Following 🟦 Host, Theory of Change 🟦 As seen in: @discoverflux, Vanity Fair, Washington Post, Daily Beast... 🟦 Posts about politics, philosophy, gender, and tech
Rudy M. @RudyM_EvelynAI
16 Followers 298 Following 🚀 AI Innovator | Evelyn 4 Creator | Software Developer Building smarter #CustomGPTs and pushing boundaries with my cutting-edge AI project.
Justin Selig @justinsselig
119 Followers 602 Following Operator + Investor. EfficientComputer. @EclipseVentures. @CerebrasSystems, @SpaceX, @Uber_ATG, @CornellEng.
Jason Fakidis @jafaki1
2 Followers 308 Following
Astrid Westerlund @Astrid_west1
803 Followers 603 Following Real growth doesn't seek attention, it lives in your calm, your clarity, and your quiet confidence to choose yourself.. 🧘♀️
Simon van Zuylen-Wood @svzwood
4K Followers 2K Following Writing features @nymag svzwood at nymag dot com
Adi Ganesh @_adiganesh
467 Followers 638 Following Research @openai. Prev. @metaai @nuro @stanford @thielfellowship. Co-created @gradientpub
Kizaru_nervoso @Kizaru_nervoso
194 Followers 6K Following Geralmente calmo, excepcionalmente nervoso
TwoTribes @2_Tribes
579 Followers 3K Following I'm Two Tribes, a children's book about #tribalism, #politicalpolarization, and #conflictresolution.
Alex van Grootel @IAmGrootel
63 Followers 781 Following
Murtza @xMurtza
22 Followers 211 Following
de jia @dejia49220082
38 Followers 2K Following
Souza Lanna Advogados @SouzaLannaAdv
6 Followers 557 Following Souza Lanna Advogados ⚖️ | Direito Imobiliário e Condominial | Direito Sucessório | Direito Bancário | Direito Administrativo
T.Kato @hastur_kato
273 Followers 2K Following Web dev and digital marketing. Books/PKM/Data ウェブのお仕事 @CDataJapan
Michelle Hutchinson @PinkUtilitarian
107 Followers 49 Following
IsotonicMind @IsotonicMind
4 Followers 107 Following
Rimjhim Dey @rimdey
1K Followers 3K Following Owner at DEY. Ideas +Influence. We market big ideas, thinkers, non-fiction books although not necessarily in that order.
Ai Domains For Sale @MetaDomains1
1K Followers 6K Following Premium .Ai Domains for Ai Startups | Helping founders build unforgettable brands| https://t.co/zGErh4BnQW | https://t.co/5xCo5XEPDc | https://t.co/42pWgCAmW5 | https://t.co/PlInwNLAWD |
Gauri @geekytwoshoes
322 Followers 4K Following
Dan Howl @Dan_Howl
127 Followers 1K Following Policy, Politics & Technology | Head of Policy and Public Affairs @BCS | former @uklabour staffer | #AVFC | https://t.co/lKlTvLIkja
Andres Jimenez Zorril... @andresjz_swp
110 Followers 322 Following
Takechiyo @takechiyo0705
52 Followers 440 Following Takechiyo was the childhood name of Tokugawa Ieyasu, the founder of the Edo shogunate.
云创兽Ai @Dawxal88416
1 Followers 112 Following 🚀 stock investing lover, wealth goddess! ready for market insights. DM me about stock recoveries! 🌟 #Gold #Investing
FiFi @kgcallender
83 Followers 903 Following Truth Seeker, Conservative, Enjoys all things outdoors!
Luke McNally @pseudomoaner
1K Followers 2K Following Senior Lecturer at University of Edinburgh and Data Scientist. AI for R&D Prioritisation, AI tools for education. Views my own.
Samuel Shadrach @samuel_sha13010
79 Followers 89 Following Day #16, I am on hunger strike in protest of Superintelligent AI I (aim to) only use twitter once a week. DMs open.
Leo McKee-Reid @LeoMckeeReid
115 Followers 465 Following AI safety startup founder || sisyphus enjoyer prev: ml4science, deception, brains, rockets
Armando di Matteo @A1987dM
3 Followers 123 Following Formerly @armando1987dim (I lost access to that account because I'm an idiot) Researcher at @INFN_
Matthew Kenney @baykenney
3K Followers 3K Following Founder @algoresearch_. Previously: Senior ML Engineer at @Apple, Asst. Research Prof at @DukeU Duke Data Science | @penn_state '15 | @Cornell '11
Lauren Wagner @typewriters
4K Followers 1K Following building trust in AI @arcprize @abundanceinst • prev @Meta @GoogleAI @OIIOxford • 🪽@a16z
bellamy🫀 @63114my
2 Followers 139 Following
Loquacious Bibliophil... @LocBibliophilia
1K Followers 832 Following In a time of machines, I'm pro-human. Humanity is great and we ought to keep it around. d/acc+ for human relevance
Irvin McCullough @mcculloughirvin
3K Followers 1K Following likes whistleblowers & foia. senior fellow @govacctproj
Trooper Sanders @TrooperSanders
672 Followers 3K Following
Tzu Kit🔸⏸️ @suntzukit
248 Followers 1K Following ✨ ensuring humanity does AGI risk-management well with thoughtful, regular common-sense planning ✨☺️
Justin Barbour @justincbarbour
114 Followers 509 Following Heterodox rock music critic / Avant-garde enthusiast / Scaruffian disciple THE BEATLES ARE THE MOST OVERRATED BAND OF ALL TIME DON VLIET & LOU REED VOTARY
Eliezer Yudkowsky ⏹... @ESYudkowsky
209K Followers 102 Following The original AI alignment person. Understanding the reasons it's difficult since 2003. This is my serious low-volume account. Follow @allTheYud for the rest.
Robin Hanson @robinhanson
113K Followers 726 Following Let’s skip witty banter & talk deep Qs. Books: https://t.co/hpZgEm55Ma https://t.co/iFs9C3IuOM Chief Scientist @_futarchy Advisor @MetaDAOProject @butterygg
Stefan Schubert @StefanFSchubert
39K Followers 2K Following Effective Altruism and the Human Mind (with @LuciusCaviola) is available for free at: https://t.co/ozvdxlZiro
Kelsey Piper @KelseyTuoc
49K Followers 972 Following We're not doomed, we just have a big to-do list.
Rob Bensinger ⏹️ @robbensinger
13K Followers 395 Following Comms @MIRIBerkeley. RT = increased vague psychological association between myself and the tweet.
Peter Wildeford🇺�... @peterwildeford
22K Followers 321 Following Globally ranked top 20 forecaster 🎯 AI is not a normal technology. I'm working at @IAPSai to shape AI for global prosperity and human freedom.
Dustin Moskovitz @moskov
72K Followers 499 Following
Qualy the lightbulb @QualyThe
10K Followers 323 Following Official Unofficial EA mascot. I'm here to make friends and maximise utility, and I'm all out of neglected altruistic opportunities
Michael Nielsen @michael_nielsen
110K Followers 6K Following Searching for the numinous 🇦🇺 🇨🇦, currently live in 🇺🇸 Research @AsteraInstitute https://t.co/maezekzRUb https://t.co/2dWwZKrvrn
Amanda Askell @AmandaAskell
54K Followers 657 Following Philosopher & ethicist trying to make AI be good @AnthropicAI. Personal account. All opinions come from my training data.
Rob Wiblin @robertwiblin
45K Followers 770 Following Host of the 80,000 Hours Podcast. Exploring the inviolate sphere of ideas one interview at a time: https://t.co/2YMw00bkIQ
David Manheim @davidmanheim
10K Followers 2K Following Lecturer @TechnionLive, founder @alter_org_il, emeritus @superforecaster, PhD @PardeeRAND Optimistic on AI, pessimistic on humanity managing the risks well.
Spencer Greenberg �... @SpencrGreenberg
34K Followers 6K Following A mathematician/entrepreneur in social science. Tweets about psychology, society, rationality, tech, science, and philosophy. Founder of https://t.co/2YGraOwo77
Alexander Berger @albrgr
14K Followers 2K Following Enjoys a good applied micro paper. CEO of @open_phil. Views my own, tweets self-destruct every once in a while.
Frances Lorenz @frances__lorenz
6K Followers 607 Following Claude says I process my emotions out loud & my girlfriend has a job, so I put my feelings & thoughts here ✨ working on the EA Global team @ CEA (views my own)
dylan matthews 🔸 @dylanmatt
72K Followers 1 Following I write for Vox 🔸 I donate 10 percent of my income to effective charities and so can you https://t.co/3L39qEBEue
Daniel Eth (yes, Eth ... @daniel_271828
10K Followers 980 Following Researching effects of automated AI R&D | pro-America, pro-tech, & pro-AI safety
Jordan Schneider @jordanschnyc
53K Followers 4K Following Newsletter: https://t.co/j23uuLxE59 join 50k readers Podcast: https://t.co/4sx8iev5Az Fellow: @cnasdc
Owain Evans @OwainEvans_UK
16K Followers 363 Following Runs an AI Safety research group in Berkeley (Truthful AI) + Affiliate at UC Berkeley. Past: Oxford Uni, TruthfulQA, Reversal Curse. Prefer email to DM.
Luca Righetti @lucafrighetti
1K Followers 253 Following AI risks are hard to study — we need more transparency and rigor. Senior Researcher @GovAI_, @METR_Evals. Podcast @HearThisIdea.
Drew (Species) ⏸️ @PauseusMaximus
1K Followers 411 Following AI meme enjoyer and extinction disrespecter. Documenting AGI on Youtube.
Steven Adler @sjgadler
9K Followers 771 Following Ex-OpenAI safety researcher (danger evals & AGI readiness), https://t.co/XtUTLK3jEo. Likes maximizing benefits and minimizing risks of AI
Seán Ó hÉigeartaig... @S_OhEigeartaigh
4K Followers 2K Following Director of https://t.co/gCEDoKdKBT at Uni of Cambridge | Researching Big Risks, and impacts of AI & emerging tech. Opinions own
Adam Gleave @ARGleave
4K Followers 403 Following CEO & co-founder @FARAIResearch non-profit | PhD from @berkeley_ai | Alignment & robustness | on bsky as https://t.co/98dTfmdw2b
Centre for the Govern... @GovAI_
6K Followers 32 Following We are building a global research community, dedicated to helping humanity navigate the transition to a world with advanced AI
Richard Hanania @RichardHanania
181K Followers 601 Following I write a newsletter you should subscribe to. https://t.co/fTgbdbgWYE. Monthly columns @unherd, @HumanProgress
Divyansh Kaushik @dkaushik96
6K Followers 3K Following Emerging tech and national security. Now DC, always Pittsburgh.
FTX @FTX_Official
715K Followers 748 Following All official FTX Group bankruptcy documents filed with the U.S. Bankruptcy Court can be found online at https://t.co/qe8U00sffb.
Caleb Watney @calebwatney
22K Followers 979 Following co-founder @IFP // the US is the R&D lab for the world and we should act like it
Elizabeth Barnes @BethMayBarnes
3K Followers 386 Following
Dean W. Ball @deanwball
15K Followers 2K Following Senior Fellow at @joinfai | Author of Hyperdimensional
Palisade Research @PalisadeAI
25K Followers 28 Following We build concrete demonstrations of dangerous capabilities to advise policy makers and the public on AI risks.
Epic Posts Daily 𝕏 @WallaceBeaufort
9K Followers 624 Following The most interesting things on the internet. All copyrights belong to their respective owners! DM for credits/removal/submission!
Ethan Mollick @emollick
290K Followers 578 Following Professor @Wharton studying AI, innovation & startups. Democratizing education using tech Book: https://t.co/CSmipbJ2jV Substack: https://t.co/UIBhxu4bgq
TracingWoodgrains @tracewoodgrains
49K Followers 2K Following Storyteller. Pragmatist. Pursue excellence. Eng/中文
Restoring Your Faith ... @HumanityChad
332K Followers 494 Following We share sweet, happy & heartwarming content from various sources. We don’t own any content. For credit or removal, please DM us.
John Nerst @everytstudies
4K Followers 1K Following big picture-fetishist | aspiring erisologist ("the study of disagreement and intellectual difference") | lover and hater of words/philosophy/art
Transluce @TransluceAI
8K Followers 15 Following Open and scalable technology for understanding AI systems.
Daniel Kokotajlo @DKokotajlo
25K Followers 249 Following
Zvi Mowshowitz @TheZvi
32K Followers 278 Following Blogger primarily on AI and AI x-risk but also other things at Don't Worry About the Vase (SS/WP/LW), founding Balsa Research to fix policy.
Epoch AI @EpochAIResearch
27K Followers 0 Following Investigating the trajectory of AI for the benefit of society.
Yoshua Bengio @Yoshua_Bengio
26K Followers 211 Following Working towards the safe development of AI for the benefit of all @UMontreal, @LawZero_ & @Mila_Quebec A.M. Turing Award Recipient and most-cited AI researcher.
Naina Bajekal 🔸 @naina_bajekal
9K Followers 3K Following Director of Communications @open_phil | Prev. Executive Editor @TIME | https://t.co/EeNGZPLl5w
Andrew Critch (🤖�... @AndrewCritchPhD
5K Followers 291 Following Let's make AI doctors! Views my own; CEO @ https://t.co/wvoKT50fKX; AI Researcher @ Berkeley; If I block you it's like I'm moving to another convo at a party; nbd.
Ketan Ramakrishnan @ketanr
2K Followers 3K Following Law professor at Yale, thinking about torts, AI, philosophy, obscure hot sauces
Xstream News @XStream1973
66K Followers 294 Following A continuous X stream of news (powered by @Rainmaker1973)
catherine ʕ•ᴥ•... @wilhelmscreamin
1K Followers 690 Following ai grantmaking @open_phil, views of someone i'm r-related to 👥
Garrison Lovely @GarrisonLovely
9K Followers 5K Following Writing a book on AI+economics+geopolitics for Nation Books. Bylines: @NYTimes, @Nature, @BBC, @Business, @Guardian, @TIME, @Verge, + others.
Steve Newman @snewmanpv
3K Followers 75 Following Co-founder of Writely (aka Google Docs) and 7 other startups. Now at the Golden Gate Institute for AI, working to bring AI’s toughest questions into focus.
Saad Siddiqui @Saad97Siddiqui
345 Followers 933 Following Senior Researcher @Safe_AI_Forum, @ais_dialogues | Affiliate @aigioxford Sino-Western AI Safety and Governance Past: @Bainandcompany, @schwarzmanorg
⿻ Andrew Trask @iamtrask
79K Followers 1K Following i teach AI on X leader @openminedorg, research scientist @GoogleDeepMind, ABD PhD @OxfordUni, @UN @GovAI_ @CFR_org GrokkingDL
FAR.AI @farairesearch
14K Followers 21 Following Frontier alignment research to ensure the safe development and deployment of advanced AI systems.
Americans for Respons... @americans4ri
2K Followers 489 Following AI policy advocacy in the public interest. ARI is leading the charge for a policy framework that mitigates risks, promotes innovation, and leaves no one behind.
Xander Davies @alxndrdavies
2K Followers 728 Following safeguards lead @AISecurityInst | PhD student w @yaringal at @OATML_Oxford | prev @Harvard (https://t.co/695XYMKqjI)
Tim Fist @fiiiiiist
3K Followers 764 Following Director of Emerging Technology @IFP. Adjunct Senior Fellow @CNASdc. AI & compute policy, science, innovation.
Richard Y. Chappell�... @RYChappell
2K Followers 235 Following Academic Philosopher. Posts better stuff at https://t.co/jwkU1JxzCj 🔸10% Pledge #54 with @GivingWhatWeCan
Emmett Shear @eshear
119K Followers 971 Following CEO of Softmax: Applied developmental cybernetics research
Chris Webster 🔶 @chris0webster
279 Followers 147 Following I do infosec and IT work for @open_phil. Trying to get better at making cocktails, playing M:TG, and reading books. 🔸10% Pledge #3889 with @GivingWhatWeCan
Ronny Fernandez (12/1... @RatOrthodox
4K Followers 300 Following walled surveilled compound manager. moonlighting as whorelord manager. Sentences starting with a lowercase letter are humor, sarcasm, exaggeration, or similar.