Cas (Stephen Casper)

Roger Grosse

@RogerGrosse

Amanda Askell

@AmandaAskell

Philosopher & ethicist trying to make AI be good @AnthropicAI. Personal account. All opinions come from my training data.

Zico Kolter

@zicokolter

Professor and Head of Machine Learning Department at @CarnegieMellon. Board member @OpenAI and @Qualcomm. Chief Scientist @GraySwanAI.

Jacob Andreas

@jacobandreas

Teaching computers to read. Assoc. prof @MITEECS / @MIT_CSAIL / @NLP_MIT (he/him). http://lingo.csail.mit.edu http://web.mit.edu/jda/www

Boaz Barak

@boazbaraktcs

Computer Scientist. See also http://windowsontheory.org . @harvard @openai opinions my own.

Leopold Aschenbrenner

@leopoldasch

http://situational-awareness.ai

Joe Carlsmith

@jkcarlsmith

Philosophy, futurism, AI. Working on Claude's values @AnthropicAI. Formerly @coeff_giving. Opinions my own.

Richard Ngo

@RichardMCNgo

natural philosopher

Jacob Steinhardt

@JacobSteinhardt

Associate Professor of Statistics and EECS, UC Berkeley // Co-founder and CEO, @TransluceAI

Leo Gao

@nabla_theta

working on AGI alignment. prev: GPT-Neo, the Pile, LM evals, RL overoptimization, scaling SAEs to GPT-4, interp via circuit sparsity. EleutherAI cofounder.

Nathan Lambert

@natolambert

Research @allen_ai, reasoning, open models, RL(VR/HF)... Contact via email. Writes @interconnectsai, @readsail Wrote The RLHF Book, 🏔️🏃‍♂️

Yarin

@yaringal

Professor of Machine Learning, University of Oxford @OATML_Oxford Group Leader Expert Advisor to AISI "One of the top machine-learning people" - Tim Berners-Lee

Ethan Perez

@EthanJPerez

Large language model safety

Eric Wallace

@Eric_Wallace_

research @openai

Dean W. Ball

@deanwball

Leap into the boundless and make it your home

Buck Shlegeris

@bshlgrs

CEO@Redwood Research (@redwood_ai), working on technical research to reduce catastrophic risk from AI misalignment. bshlegeris@gmail.com

Victoria Krakovna

@vkrakovna

Research scientist in AI alignment at Google DeepMind. Co-founder of Future of Life Institute @FLI_org. Views are my own and do not represent GDM or FLI.

MMitchell

@mmitchell_ai

Interdisciplinary researcher focused on shaping AI towards long-term positive goals. ML & Ethics. Similar content in the Skies (this bird has flown).

Geoffrey Irving

@geoffreyirving

Chief Scientist at the UK AI Security Institute (AISI). Previously DeepMind, OpenAI, Google Brain, etc.

Josh Clymer

@joshua_clymer

Turtle hatchling trying to make it to the ocean. Preparing for my automation @OpenAI. Contact via email: jclymer@openai.com.

Ajeya Cotra

@ajeya_cotra

Helping the world prepare for extremely powerful AI. Risk assessment @METR_evals. Writing at Planned Obsolescence (about AI), Good Bones (about whatever).

Daniel Kokotajlo

@DKokotajlo

Owain Evans

@OwainEvans_UK

Runs an AI Safety research group in Berkeley (Truthful AI) + Affiliate at UC Berkeley. Past: Oxford Uni, TruthfulQA, Reversal Curse. Prefer email to DM.

Theo Weber

@theophaneweber

Research scientist @ DeepMind; currently working on thinking/reasoning in Gemini.

Ryan Lowe 🥞

@ryan_t_lowe

full-stack alignment 🥞 @meaningaligned prev: InstructGPT @OpenAI

Jon Barron

@jon_barron

Principal research scientist at Google DeepMind. Synthesized views are my own.

Alexander Berger

@albrgr

Enjoys a good applied micro paper. CEO of @coeff_giving. Views my own, tweets self-destruct every once in a while.

⿻ Andrew Trask

@iamtrask

i teach AI on X building AI with attribution-based control @openminedorg, @GoogleDeepMind, @OxfordUni, @UN, @GovAI_, and @CFR_org

Rishabh Agarwal

@agarwl_

Reinforcement Learner @periodiclabs, Adjunct Prof at McGill. Ex Meta, DeepMind, Brain, @iitbombay. NeurIPS Best Paper, On-Policy Distillation

Stephen McAleer

@McaleerStephen

AI researcher at Anthropic

Caitlin Kalinowski

@kalinowski007

Builder-strategist in physical AI. Boards: Axon, Institute of Contemporary Art SF.

Stella Biderman @ ICLR

@BlancheMinerva

Ensuring that tech companies don't have a monopoly on being able to do research on cutting edge AI @AiEleuther. She/her

Johannes Heidecke

@JoHeidecke

Safety Systems @ OpenAI

Pliny the Liberator 🐉󠅫󠄼󠄿󠅆󠄵󠄐󠅀󠄼󠄹󠄾󠅉󠅭

@elder_plinius

⊰•-•⦑ latent space steward ❦ prompt incanter 𓃹 hacker of matrices ⊞ breaker of markov chains ☣︎ ai danger researcher ⚔︎ bt6 ⚕︎ architect-healer ⦒•-•⊱

Dimitris Papailiopoulos

@DimitrisPapail

Researcher @MSFTResearch, AI Frontiers Lab; Prof @UWMadison (on leave); reasoning in context; learning how to automate; agent of agents; babas of Inez Lily.

Omar Khattab

@lateinteraction

Asst professor @MIT CSAIL @nlp_mit. Research includes http://ColBERT.ai, http://DSPy.ai (@DSPyOSS), RLMs, and GEPA. Prev: CS PhD @StanfordNLP. Research @Databricks.

Sherjil Ozair

@sherjilozair

co-founder @ project prometheus | founder @GeneralAgentsCo | previously autopilot @tesla, deep learning @googledeepmind, phd http://mila.quebec, cs @iitdelhi

rishi

@RishiBommasani

Societal/economic impacts of AI; AI policy & governance @StanfordHAI Stanford CS PhD w/ @percyliang @jurafsky Cornell CS undergrad w/ @clairecardie

Christopher Potts

@ChrisGPotts

Stanford Professor of Linguistics and, by courtesy, of Computer Science. Member of technical staff @stanfordnlp and @StanfordAILab. Co-founder @ Bigspin AI.

Stephanie Chan

@scychan_brains

Staff Research Scientist at DeepMind. Artificial & biological brains 🤖 🧠 Societal impacts of AI + Science of AI. Views are my own.

Abhishek Gupta

@abhishekunique7

Assistant Professor at University of Washington. I like robots, and reinforcement learning. Previously: post-doc at MIT, PhD at Berkeley

Jason Yosinski

@jasonyo

Running experiments @OpenAI + @ml_collective. Prev: @Windscape_AI, Uber AI Labs founding team, adviser @RecursionPharma, Cornell, Montreal, Caltech 🌻

Andrew Lampinen

@AndrewLampinen

Interested in cognition and artificial intelligence. MTS at @AnthropicAI. Previously @DeepMind, cognitive science @StanfordPsych. Tweets are mine.

Tal Linzen

@tallinzen

Professor @nyuling and @NYUDataScience, research scientist @GoogleAI, inventor of the word "bertology"

James Campbell

@jam3scampbell

post training @OpenAI

Gautam Kamath

@thegautamkamath

Assistant Prof of CS @UWaterloo, Faculty @VectorInst, Canada @CIFAR_News AI Chair. Joining @NYU_Courant Fall 2026. Co-EiC @TmlrOrg. I lead @TheSalonML.

Yo Shavit

@yonashav

policy for v smart things @openai. Past: CS PhD @HarvardSEAS/@SchmidtFutures/@MIT_CSAIL. Tweets my own; on my head be it.

Markus Wulfmeier

@m_wulfmeier

Chief Scientist #Nomagic - Prev. AI & Robotics @GoogleDeepMind @oxfordrobots @berkeley_ai @ETH @MIT - European @ELLISforEurope

Eugene Vinitsky 🦋

@EugeneVinitsky

This account only exists so no on else can occupy it. Please contact through other means. Lab website: http://emerge-lab.github.io

Peter Chen

@peterxichen

Building general purpose robotics at Amazon FAR. Previously Covariant CEO and Co-Founder, @OpenAI, @UCBerkeley PhD.

Allan Dafoe

@AllanDafoe

AGI governance: navigating the transition to beneficial AGI (Google DeepMind)

David Sussillo

@SussilloDavid

Neural reverse engineer. Author. Adjunct prof at Stanford. Previous: Meta Reality Labs, Google Brain Milton Hershey Alum.

Jong Wook Kim 💟

@_jongwook_kim

Member of Technical Staff @OpenAI; previously at @nyuMARL, @SpotifyResearch, @pandoramusic, @kakaocorpglobal, and @NCSOFT

Brian Christian

@brianchristian

Researcher at the University of Oxford & UC Berkeley. Author of The Alignment Problem, Algorithms to Live By (w. Tom Griffiths), and The Most Human Human.

Songlin Yang

@SonglinYang4

pretraining @thinkymachines. Prev. PhD @MIT_CSAIL. she/her/hers

Adam Gleave

@ARGleave

CEO & co-founder @FARAIResearch non-profit | PhD from @berkeley_ai | Alignment & robustness | on bsky as http://gleave.me

smitha @ iclr

@SmithaMilli

research scientist, meta (fair) opinions are my own 🥺 👉👈

Anjney Midha

@AnjneyMidha

founder @amppublic

Ian Hogarth

@soundboy

investor at @pluralplatform, chair UK AI Security Institute, co-founder @songkick

Gretchen Krueger

@GretchenMarina

Over at Bluesky. Researcher affiliated w @BKCHarvard, Volunteer @evitable. Previously @openai @ainowinstitute. Views mine. #justdontbuildagi #talktomenotchatgpt

yobibyte

@y0b1byte

the only yobibyte @ NVIDIA

Yi Ma

@YiMaTweets

Chair Prof. in AI, HKU; Visiting Prof. of EECS, UCB For a Unified Theory of Intelligence: https://ma-lab-berkeley.github.io/deep-representation-learning-book/

Daniel Eth (yes, Eth is my actual last name)

@daniel_271828

Researching effects of automated AI R&D | pro-America, pro-tech, & pro-AI safety

Jeffrey Ladish

@JeffLadish

Applying the security mindset to everything @PalisadeAI

Mohit Bansal

@mohitban47

Parker Distinguished Prof @UNC. PECASE/ACL/AAAI Fellow. Director http://MURGeLab.cs.unc.edu (@unc_ai_group). Past @Berkeley_AI @TTIC_Connect @IITKanpur #NLP #CV

Summer Yue

@summeryue0

Safety and alignment at Meta Superintelligence. Prev: VP of Research at Scale AI, research at Google DeepMind / Brain (Gemini, LaMDA, RL / TFAgents, AlphaChip).

Rob Miles

@robertskmiles

Explaining AI Alignment to anyone who'll stand still for long enough, on YouTube and Discord. Music, movies, microcode, and high-speed pizza delivery

Greg Durrett

@gregd_nlp

Associate professor at NYU (Courant CS + Center for Data Science) | advisor for @bespokelabsai | large language models and NLP | he/him

tom white

@dribnet

creations with code and networks

Elizabeth Barnes

@BethMayBarnes

Jesse Mu

@jayelmnop

computational linguistics

Steven Adler

@sjgadler

AI safety researcher (ex-OpenAI: danger evals, AGI readiness, etc), writing at https://clear-eyed.ai

Scott Niekum

@scottniekum

Associate professor at UMass Amherst CICS. AIignment, safety, reinforcement learning, imitation learning, and robotics.

Matt Clifford

@matthewclifford

Co-founder @join_ef; Chair @ARIA_Research; Make Britain Rich Again.

Oliver Habryka

@ohabryka

Building https://LessWrong.com and https://Lighthaven.space.

Miles Wang

@MilesKWang

Researcher @OpenAI

Cristóbal Valenzuela

@c_valenzuelab

@runwayml Co-Founder & Co-CEO

David Hall

@dlwh

Research Engineering Lead at @StanfordCRFM. Previously co-founder at Semantic Machines ⟶ MSFT. Lead developer of Levanter and Marin @dlwh@sigmoid.social

𝙷𝚒𝚖𝚊 𝙻𝚊𝚔𝚔𝚊𝚛𝚊𝚓𝚞

@hima_lakkaraju

AI Professor @Harvard; Senior Staff Research Scientist @GoogleAI; @trustworthy_ml #AI #XAI; AI PhD from Stanford; Sloan/Kavli Fellow, MIT TR #35Under35

Sarah Catanzaro

@sarahcat21

“All methods are sacred if they are internally necessary” (GP @amplifypartners, prev @canvasvc; Head of Data @Mattermark; @palantirtech; @c4ads)

Trenton Bricken

@TrentonBricken

Trying to make AI go well @AnthropicAI

Suresh Venkatasubramanian (mostly in the sky now)

@geomblog

AI Bill of Rights coauthor. Prof@BrownUniversity. Former tech advisor to President Biden @WHOSTP. He/him/his. Tweets my own.

Marius Hobbhahn

@MariusHobbhahn

CEO at Apollo Research @apolloaievals prev. ML PhD with Philipp Hennig & AI forecasting @EpochAIResearch

Nathan Labenz

@labenz

AI Scout, building text-2-video @Waymark, host of The Cognitive Revolution podcast

Eli Lifland

@eli_lifland

AI forecasting and governance @AI_Futures_. Co-author of AI 2027 and the AI Futures Model. Also @aidigest_, @SamotsvetyF. Prev @oughtinc

Michaël Trazzi

@MichaelTrazzi

http://michaeltrazzi.com

Peter Wildeford🇺🇸🚀

@peterwildeford

Head of Policy @AIPolicyNetwork. Ohioan. World champion forecaster. Former data scientist. Protecting liberty and prosperity in the age of superintelligence.

Samuel Albanie 🇬🇧

@SamuelAlbanie

frontier evals lead for gemini @GoogleDeepMind

David Shor

@davidshor

Head of Data Science at Blue Rose Research, based in NYC, originally from Miami. I try to elect Democrats. Views are my own. he/him🌹

Stefan Schubert

@StefanFSchubert

I run The Update newsletter. Book: http://academic.oup.com/book/56384

bayes

@bayeslord

100% organic human tokens

Andy Masley

@AndyMasley

When the going gets weird the weird turn pro.

Jung-Woo Ha

@JungWooHa2

Sr. Secretary to the President for AI & Future Planning, #Korea #청와대 #AI미래기획수석비서관 Full Member, #NAEK

Alex Bores

@AlexBores

NY Assemblymember, computer engineer, dad, husband. Running for Congress in NY-12 to rebuild democracy and deliver results. Big AI's #1 target.

David Manheim

@davidmanheim

Lecturer @TechnionLive, founder @alter_org_il, emeritus @superforecaster, PhD @PardeeRAND Optimistic on AI, pessimistic on humanity managing the risks well.

Jasmine Wang

@j_asminewang

Matthew Barnett

@MatthewJBar

Co-founder of @MechanizeWork Married to @natalia__coelho email: matthew at mechanize dot work

Joel Lehman

@joelbot3000

ML researcher, co-author Why Greatness Cannot Be Planned. Creative+safe AI, philosophy. SiR @second_natureai; prev OpenAI / Uber AI / Geometric Intelligence

Ruiqi Zhong @NeurIPS 25

@ZhongRuiqi

Member of Technical Staff at Thinking Machines. Human+AI collaboration. Scalable Oversight. Explainability. Prev @AnthropicAI PhD UC Berkeley'25; Columbia'19

Seán Ó hÉigeartaigh

@S_OhEigeartaigh

Director of http://ai-far.org at Uni of Cambridge | Researching Big Risks, and impacts of AI & emerging tech. Opinions own

Neil Chowdhury

@ChowdhuryNeil

@TransluceAI, previously @OpenAI

Sandhini

@SandhiniAgarwal

AI Policy @OpenAI

Ashvin Nair

@ashvinair

RL foundations @cursor_ai. Prev: o1, o3, Code Interpreter @openai, 9 years learning to poke by poking at UC Berkeley

girish sastry

@girishsastry

AI & other things. I used to work at OpenAI on Policy Research.

Daniel Ziegler

@d_m_ziegler

Alignment Stress-Testing @ Anthropic