Adrien Ecoffet

Noam Brown

@polynoamial

Researching reasoning @OpenAI | Co-created Libratus/Pluribus superhuman poker AIs, CICERO Diplomacy AI, and OpenAI o3 / o1 / 🍓 reasoning models

Mira Murati

@miramurati

Now building @thinkymachines. Previously CTO @OpenAI

Sam Bowman

@sleepinyourhat

AI alignment + LLMs at Anthropic. On leave from NYU. Views not employers'. No relation to @s8mb. Into @givingwhatwecan.

Sebastien Bubeck

@SebastienBubeck

I work on AI at OpenAI. Former VP AI and Distinguished Scientist at Microsoft.

Barret Zoph

@barret_zoph

@openai Past: - CTO & Co-Founder Thinking Machines Lab (@thinkymachines) - VP Research (Post-Training) @openai - Research Scientist at Google Brain

William Fedus

@LiamFedus

Co-Founder of @periodiclabs Past: VP of Post-Training @OpenAI; Google Brain

Dwarkesh Patel

@dwarkesh_sp

Host of @dwarkeshpodcast https://www.youtube.com/DwarkeshPatel https://open.spotify.com/show/4JH4tybY1zX6e5hjCwU6gF https://apple.co/3ujLQkZ

Joshua Achiam

@jachiam0

Freedom, flourishing, and abundance. Chief Futurist @openai. Main author of http://spinningup.openai.com

David Duvenaud

@DavidDuvenaud

Machine learning prof @UofT. Former team lead at Anthropic. Working on generative models, inference, & latent structure.

Luke Metz

@Luke_Metz

OpenAI Previously: Thinking Machines, Google Brain

Jack Rae

@jack_w_rae

Distinguished Scientist @ Meta   LLMs (e.g. Gopher, Chinchilla, Gemini)  Compression & RL ☯️   Past: Google, OpenAI, Quora

Jason Kwon

@jasonkwon

CSO @openai

Bob McGrew

@bobmcgrewai

Learning new things. Former Chief Research Officer at OpenAI, early exec at Palantir, early employee at Paypal.

Tim Rocktäschel

@_rockt

Professor of AI @AI_UCL, PI @UCL_DARK, Fellow @ELLISforEurope. Ex @GoogleDeepMind @AIatMeta @CompSciOxford

Catherine Olsson

@catherineols

Hanging out with Claude, improving its behavior, and building tools to support that @AnthropicAI 😁 prev: @open_phil @googlebrain @openai (@microcovid)

Aidan Clark

@_aidan_clark_

Qualitative Mathematics @OpenAI Ex: @DeepMind Hae sententiae verbaque mihi soli sunt

Matthew Johnson

@SingularMattrix

Researcher at Google Brain. I work on JAX (https://github.com/google/jax).

Susan Zhang

@suchenzang

@ Google Deepmind. Past: @MetaAI, @OpenAI, @unitygames, @losalamosnatlab, @Princeton etc. Always hungry for intelligence.

rohan anil

@_arohan_

aspiring to understand deep learning

Jeff Clune

@jeffclune

Professor, CS, U. British Columbia. CIFAR AI Chair, Vector Institute. Sr. Advisor, DeepMind | ML, AI, deep RL, deep learning, AI-Generating Algorithms (AI-GAs)

Boaz Barak

@boazbaraktcs

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

Leopold Aschenbrenner

@leopoldasch

http://situational-awareness.ai

Chelsea Sierra Voss

@csvoss

engineeress ✨ Member of Technical Staff @openai // serious play // past @pilothq, @sendwaveapp, @khanacademy, CS/math @MIT, 2x IBO gold

Joanne Jang

@joannejang

trying to automate myself @coreautoai // prev: model behavior & labs @openai

David Dohan

@dmdohan

reducing perplexity @openai | past: probabilistic programs, proteins, science & reasoning @ google brain 🧠

sarah guo

@saranormous

startup investor/helper, founder @conviction. accelerating AI adoption, interested in progress. tech podcast: @nopriorspod

Nat McAleese

@__nmca__

Research @AnthropicAI. Previously @OpenAI, @DeepMind. Views my own.

Richard Ngo

@RichardMCNgo

natural philosopher

Taco Cohen

@TacoCohen

Slop janitor & post-trainologer at Meta / FAIR. Into codegen, RL, equivariance. Spent time at Qualcomm, Scyfer (acquired), UvA, Deepmind, OpenAI.

Peter Welinder

@npew

VP and GM @OpenAI

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.

Jason Weston

@jaseweston

Senior Director & RS @Meta + Visiting Prof NYU | OG in LLMs | Pretrain+Finetune in 2008+ | 147k+ citations | Current: Self-Improving & Co-Improving AI

will depue

@willdepue

retired ex @openai (posttraining o3/4o, sora 1 & 2, pretraining moonshots)

Ethan Perez

@EthanJPerez

Large language model safety

kipply

@kipperrii

"uncanny ability to be mentioned in every slack thread about code that's mysteriously breaking" - claude

Eric Wallace

@Eric_Wallace_

research @openai

Rosanne Liu

@savvyRL

Mom. Cofounded & running @ml_collective. Co-host of Deep Learning Classics & Trends. Research at Google DeepMind. DEI/DIA Chair of ICLR & NeurIPS.

augustus odena

@gstsdn

Something new. Previously: AI research at TBD Labs / Meta; cofounder at @AdeptAILabs; Invented Scratchpad / Chain-of-Thought; Google Brain

Dean W. Ball

@deanwball

“To some it is philosophical struggle, to me it is allegro con brio”

Yang Song

@DrYangSong

Research Principal of MSL

Adam D'Angelo

@adamdangelo

CEO of Quora, working on Poe: @poe_platform

swyx 🇸🇬

@swyx

achieve ambition with intentionality, intensity, integrity & insanity. affiliations: - @dxtipshq - @cognition - @temporalio - @aidotengineer - @latentspacepod

Helen Toner

@hlntnr

AI, national security, China. Part of the founding team at @CSETGeorgetown (opinions my own). Author of Rising Tide on substack: http://helentoner.substack.com

Hyung Won Chung

@hwchung27

AI Research Scientist @Meta Superintelligence Labs. Past: @OpenAI / @Google Brain / PhD @MIT

Aidan McLaughlin

@aidan_mclau

research scientist @openai

Tejal Patwardhan

@tejalpatwardhan

research @openai // pain is the moat

Scott Gray

@scottgray76

GPU Geek at @OpenAI. I have a long standing interest in neuroscience and its application to machine learning. He/Him.

Hongyu Ren

@ren_hongyu

research @meta superintelligence. CS PhD @stanford. prev @openai.

Peter Steinberger 🦞

@steipete

Polyagentmorous ClawFather. Came back from retirement to mess with AI and help a lobster take over the world. @OpenClaw🦞 + @OpenAI

Yannic Kilcher 🇸🇨

@ykilcher

I make videos. Skill > Destiny. vi / vim

Isa Fulford

@isafulf

research @openai

Daniel Kokotajlo

@DKokotajlo

Kevin Roose

@kevinroose

NYT tech columnist, Hard Fork co-host, high-perplexity language model. Writing a book about AGI.

Rohan Pandey

@khoomeik

descending cross-entropy to ascend entropy @PeriodicLabs || prev research @OpenAI @CarnegieMellon '23

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

Rowan Zellers

@rown

multimodal @thinkymachines. I also like to climb rocks and throw pottery. http://rowanzellers.com (he/him)

Alexander Berger

@albrgr

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

Yann Dubois

@yanndubs

Posttraining @OpenAI | PhD @StanfordAILab

Ted Sanders

@sandersted

Research at OpenAI. Be kind to others, and yourself.

Tao Xu

@txhf

Learning Machine at OpenAI

Sam Schoenholz

@sschoenholz

@openai previously: @thinkymachines, google brain.

gabriel

@gabriel1

research at @OpenAI, previously at midjourney, swedish high school dropout

Dylan HadfieldMenell

@dhadfieldmenell

Associate Prof @MITEECS working on value (mis)alignment in AI systems; Safety & Alignment Advisor at http://Character.AI; @dhadfieldmenell@bsky.social; he/him

Stephen McAleer

@McaleerStephen

AI researcher at Anthropic

Caitlin Kalinowski

@kalinowski007

Building the physical future of AI. Boards: Axon, Institute of Contemporary Art SF.

christina kim

@christinahkim

researcher @openai

Gabriel Goh

@gabeeegoooh

Images {1,1.5,2} Lead, among other things.

Johannes Heidecke

@JoHeidecke

Safety Systems @ OpenAI

William MacAskill

@willmacaskill

Consider donating 10% to effective charities: http://www.givingwhatwecan.org/pledge Or a career for impact: http://80000hours.org My research: http://forethought.org

Ajay Jain

@ajayj_

Co-founder @genmoai. Co-created denoising diffusion (DDPM), DreamFusion, Dream Fields. Ex Ph.D. @berkeley_ai, @googleai, @facebookai, @nvidiaai, @mit

Ilya Kostrikov

@ikostrikov

Pre-Training Researcher @OpenAI, previously: RL/post-training @OpenAI, Postdoc at UC Berkeley @berkeley_ai, Researcher at Google Brain, PhD in CS @CILVRatNYU

Rui Shu

@_smileyball

I draw smileyball http://instagram.com/smiley._.ball Writing organic artisanal handcrafted code @OpenAI Previously doing the same @Stanford

Sherwin Wu

@sherwinwu

@OpenAI

rishi

@RishiBommasani

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

Stephanie Chan

@scychan_brains

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

Rob Wiblin

@robertwiblin

Host of the 80,000 Hours Podcast. Exploring the inviolate sphere of ideas one interview at a time: http://80000hours.org/podcast/

Jason Yosinski

@jasonyo

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

Hattie Zhou

@oh_that_hat

I want to understand things deeply and explain them well. Building friendly AI @AnthropicAI Give me anonymous feedback: https://www.admonymous.co/hattiezhou

Yu Bai

@yubai01

Training @OpenAI. Previously @SFResearch, PhD @Stanford.

Adam.GPT

@TheRealAdamG

GTM at @OpenAI. Senior token slinger. A fan of NY sports, memes, tech & nice people. NJ. My opinions are my own.

Jimmy Apples 🍎/acc

@apples_jimmy

Wagmi. 2025. As featured in Bloomberg. As quoted by Nobel Prize winner Demis Hassabis. As mentioned on the Lex Fridman Podcast💺

Andrew Lampinen

@AndrewLampinen

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

martin_casado

@martin_casado

GP @ a16z Nostalgic for the future

Ariel Herbert-Voss

@adversariel

Founder @RunSybil. likes: offsec, LLMs, and dumb memes. prev: research scientist @OpenAI / CS PhD @Harvard / @defcon AI Village

Brandon McKinzie

@mckbrando

research @OpenAI | prev: multimodal @Apple, physics/cs @UCBerkeley

James Campbell

@jam3scampbell

post training @OpenAI

Shuchao Bi

@shuchaobi

Research at Meta Superintelligence Labs, RL/post-training/agents; Previously Research at OpenAI on multimodal and RL; Opinions are my own.

Junyang Lin

@JustinLin610

❤️ 🍵 ☕️ 🍷 🥃 🍺

Kenneth Stanley

@kenneth0stanley

SVP of Open-Endedness @LilaSciences. Prev: Maven CEO, Lead@OpenAI, Uber AI, prof@UCF. NEAT,HyperNEAT,novelty search, POET. Book:Why Greatness Cannot Be Planned

Shunyu Yao

@ShunyuYao12

Language agents

Ethan Caballero

@ethanCaballero

ML @Mila_Quebec ; previously @GoogleDeepMind

Yo Shavit

@yonashav

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

Steven Heidel

@stevenheidel

API @OpenAI | 🏳️‍🌈 he/him

Markus Wulfmeier

@m_wulfmeier

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

Jiaming Song

@baaadas

Chief Scientist @LumaLabsAI. #LumaDreamMachine

Tamay Besiroglu

@tamaybes

Co-founder/CEO @MechanizeWork

Jong Wook Kim 💟

@_jongwook_kim

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

Pavel Izmailov

@Pavel_Izmailov

Researcher @AnthropicAI 🤖 Assistant Professor @nyuniversity 🏙️ Previously @OpenAI #StopWar 🇺🇦

Yaroslav Bulatov

@yaroslavvb

@southparkcommons (early OpenAI, Google Brain, Meta) https://yaroslavvb.substack.com/ https://medium.com/@yaroslavvb https://yaroslavvb.blogspot.com/

Demi Guo

@demi_guo_

Co-founder & CEO @pika_labs | AI Self @semi_guo_

Sam McCandlish

@samsamoa

Building AI as a human ally @AnthropicAI

Julian Togelius

@togelius

Researcher. AI, games, markets, open-endedness, evolution. Professor @nyuniversity @NYUGameLab Head of AI @the_nof1 Co-founded @modl_ai Rogueliker.

Reiichiro Nakano

@reiinakano

i like building awesome things with awesome people 🇵🇭 🇯🇵

Rosie Campbell

@RosieCampbell

Forever expanding my nerd/bimbo Pareto frontier. AI welfare 🤝 AI safety. Managing Director @eleosai, Ex-OpenAI, 2024 @rootsofprogress fellow

Gretchen Krueger

@GretchenMarina

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

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

Jack Parker-Holder

@jparkerholder

Co-lead of Genie 3 and World Models team lead @GoogleDeepMind, Honorary Associate Professor @UCL_DARK. Dad (🧒👶🐶), CFC fan, BJJ. Views are my own :)

Pierre-Yves Oudeyer

@pyoudeyer

Research director in AI and CogSci @inria, Head of @flowersInria lab, prev. @MSFTResearch @SonyCSLParis https://www.linkedin.com/in/pierreyvesoudeyer/

Michelle Pokrass

@michpokrass

shipping at openai

Frank Dellaert

@fdellaert

Robotics & Computer Vision Professor at Georgia Tech, and part-time CAIO at Verdant Robotics. Before: stints at KUL, Skydio, Facebook B*8, Google AI.

Ruoming Pang

@ruomingpang

Steven Adler

@sjgadler

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

Michela Paganini

@WonderMicky

Staff Research Scientist @DeepMind | LLMs, Evals & Model Understanding | Previously: @facebookAI | @Yale Physics PhD | @CERN | @BerkeleyLab | @UCBerkeley

Casey Chu

@caseychu9

Researcher at @openai

Kyle Kastner

@kastnerkyle

computers and music are fun

Miles Wang

@MilesKWang

Researcher @OpenAI

David Schnurr

@_dschnurr

engineer @openai

Dave

@dece

Georges Harik

@gharik

humans& co-founder, 7th employee google, co-created adwords online, co-created adsense targeting, worked on ai, gmail, calendar, bought android.

rachel lim

@_rlys

eng, aesthete, bookreader. building things @openai

shyamal

@shyamalanadkat

applied AI. prev @openai @dukeu. explorer. 🇮🇳

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

Lama Ahmad لمى احمد

@_lamaahmad

@OpenAI. views my own.

Toby Shevlane

@tshevl

@_Mantic_AI cofounder & CEO, on a mission to solve forecasting. Prev: research scientist @GoogleDeepMind, PhD at @UniofOxford.

Brydon Eastman

@brhydon

🇨🇦 Mathematician (heavy on the ish) @thinkymachines Prev. MTS @OpenAI; PhD @WaterlooMath Certified wife guy, featured twice in Lego Magazine © ☕//🤔➡️💻

Jared Palmer

@jaredpalmer

VP CoreAI @Microsoft Previously, VP of AI @Vercel. Creator of @v0 and @aisdk. Founder of @Turborepo (acquired by Vercel)

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🌹

Jerry Liu

@jerryjliu0

Parsing the world's hardest PDFs @llama_index. cofounder/CEO Careers: https://www.llamaindex.ai/careers Enterprise: https://www.llamaindex.ai/contact

Stefan Schubert

@StefanFSchubert

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

william

@wgussml

cofounder @ Project Prometheus, prev cofounder @generalagents, OpenAI, helped build copilot & MineRL, creator of ell

Andy Masley

@AndyMasley

When the going gets weird the weird turn pro.

Jasmine Wang

@j_asminewang

Matthew Barnett

@MatthewJBar

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

Phil Chen

@philhchen

Building something new. Previously research @openai @GoogleDeepMind @scale_AI @Stanford

Jacob Trefethen

@JacobTref

OpenAI Foundation science!

John Hallman

@johnohallman

Pretraining @OpenAI, sometimes RL/bio/health too

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

fouad

@fouadmatin

@openai codex, cyber, research, security

Rylan Schaeffer

@RylanSchaeffer

AI RS @ Meta TBD. On-Leave from Stanford w/ @sanmikoyejo. Prev @ Gemini, Meta, MIT, Harvard, Uber, UCL, UC Davis

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

Jeffrey Wang

@jeffreygwang

Researcher @OpenAI, working on pretraining & reasoning. Previously (and perhaps again) CS/Math/English @Harvard.

James Dyett

@dyett

GTM at @openai

Simón

@simonpfish

beep boop

Sarah Shoker

@SarahShoker

Senior Research Scholar in AI at the Berkeley Risk and Security Lab at UCB. Formerly the Lead of the Geopolitics Team at OpenAI.

Jason Phang

@zhansheng

Foundations at @OpenAI. PhD @NYUDataScience, @AiEleuther, 🇸🇬. Prev: @Google, @Microsoft

nataliestaud

@nataliestaud

model behavior @OpenAI

Josh McGrath

@j_mcgraph

search post training @ openai

ilge

@ilge

Researcher @OpenAI | there is as yet insufficient data for a meaningful answer.

Jason Wolfe

@w01fe

alignment and the model spec @OpenAI (opinions are my own)

Hugh Zhang

@hughbzhang

Nitish

@StrongDuality

Allison Tam

@allisontam_

research @OpenAI - prev @DeepMind

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

filipe

@filipeabperes

seeking scientific speedups @OpenAI

girish sastry

@girishsastry

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

Tyna Eloundou

@ThankYourNiceAI

julia villagra

@juliacvillagra

@coreautoai ex-Chief People Officer OpenAI | ex-HRT Head of People founder, Tertulia | board member, ICA SF | Mom

Diane Yoon

@dorkydi

nervouscomputer

@nervouscomputer

iced latte in my veins

Daniel Ziegler

@d_m_ziegler

Alignment Stress-Testing @ Anthropic