Jacob Trefethen

Sam Bowman

@sleepinyourhat

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

Alexandr Wang

@alexandr_wang

chief ai officer @meta, founder @scale_ai. rational in the fullness of time

Dwarkesh Patel

@dwarkesh_sp

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

Amanda Askell

@AmandaAskell

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

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.

Zico Kolter

@zicokolter

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

Catherine Olsson

@catherineols

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

Sholto Douglas

@_sholtodouglas

Scaling RL @AnthropicAI, ex @DeepMind - working towards intelligence too cheap to meter

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.

Taco Cohen

@TacoCohen

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

typedfemale

@typedfemale

a really exciting new account "advanced pytorch user" - @cHHillee alt: @typedalt

Bret Taylor

@btaylor

Co-Founder @SierraPlatform. Board @OpenAI.

kipply

@kipperrii

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

Kelsey Piper

@KelseyTuoc

We're not doomed, we just have a big to-do list.

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

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).

Devon ☀️

@devonzuegel

I've gone to look for myself. If I return before I get back, please ask me to wait. Prev @GitHub @NotionHQ @Affirm @StanfordReview. Now building @Esmeralda_Inst

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.

Alex Dimakis

@AlexGDimakis

Professor, UC berkeley | Founder @bespokelabsai |

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

Rachel Thomas

@math_rachel

R&D at answer ai | fast ai co-founder | past: math PhD, immunology MS, early eng at uber, prof at USF Data Institute

Alexander Berger

@albrgr

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

Dustin Moskovitz

@moskov

Ted Sanders

@sandersted

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

Tao Xu

@txhf

Learning Machine at OpenAI

Katja Grace 🔍

@KatjaGrace

Thinking about whether AI will destroy the world at http://aiimpacts.org. DM or email for media requests. Feedback: http://admonymous.co/googolplex

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

Chris Anderson

@chr1sa

*Occupy the skies* Past in drones, airtaxis and media. Present in AI+Science. Also nerdy autonomous car racing hobby at @DIYRobocars Photo by @chrismichel

Patrick Hsu

@pdhsu

@ArcInstitute co-founder, @BerkeleyBioE professor, @ThriveCapital investor | biology and ML research | 🇨🇦 prev @harvard @broadinstitute, Fast Grants

rishi

@RishiBommasani

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

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/

Adam.GPT

@TheRealAdamG

Forward Deployed 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💺

Alec Stapp

@AlecStapp

Co-founder @IFP, an innovation policy think tank

Joshua Kushner

@JoshuaKushner

🤓

Luke Muehlhauser

@lukeprog

Coefficient Giving, AI Governance and Policy

Jason Crawford

@jasoncrawford

I write and speak about the history & philosophy of progress. Founder, @rootsofprogress. Host of the Progress Conference. Author, The Techno-Humanist Manifesto.

Alex Tamkin

@AlexTamkin

machine learning, science & society @AnthropicAI | recently: Clio, Anthropic Economic Index, Claude Artifacts | prev: phd @StanfordAILab, @stanfordnlp

Yo Shavit

@yonashav

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

Alexey Guzey

@alexeyguzey

http://guzey.com, http://newscience.org, @openai; in pursuit of a just, beautiful future.

Yasaman Bahri

@yasamanbb

Research Scientist @GoogleDeepMind // AI + physics // Ph.D. @UCBerkeley.

Tamay Besiroglu

@tamaybes

Co-founder/CEO @MechanizeWork

Andy Matuschak

@andy_matuschak

More wonder, more insight, more expression, more joy! R&D on tools for thought, with a focus on memory, reading, and attention. Currently working on @pico.

Anjney Midha

@AnjneyMidha

founder @amppublic

Tim Hwang

@timhwang

high politics, secret exploration, distant warfare

Jeremy Bernstein

@jxbz

🧪 @thinkymachines ✍️ anon feedback @ http://admonymous.co/jxbz

Rosie Campbell

@RosieCampbell

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

Jeffrey Ladish

@JeffLadish

Applying the security mindset to everything @PalisadeAI

Cate Hall

@catehall

preorder You Can Just Do Things, a guide to personal agency, now: https://shorturl.at/kOCpz anon feedback: http://shorturl.at/vxF24 | http://catehall.com

Michelle Pokrass

@michpokrass

shipping at openai

Tamara Winter

@tamarawinter

Publisher @stripepress | Board @ifp + @joinFAI | Creator of TACIT, a mini-documentary series following master craftspeople at work

Nadia Asparouhova

@nayafia

cloudcat // new book about ideas that don’t spread: https://darkforest.metalabel.com/antimemetics

José Luis Ricón Fernández de la Puente

@ArtirKel

Head of Theory at @RetroBio_ , enjoyer of things, blog: http://nintil.com

uncatherio

@uncatherio

wholesomeness practitioner; user of words my more "work" account is @catherineols

Matt Clifford

@matthewclifford

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

Erik Torenberg

@eriktorenberg

General Partner @a16z. Positive-sum. Striving for a thousand year heart.

Miles Wang

@MilesKWang

Researcher @OpenAI

Dave

@dece

Daniela Amodei

@DanielaAmodei

President @AnthropicAI. Formerly @OpenAI, @Stripe, congressional staffer, global development

Alex Rives

@alexrives

AI for scientific discovery. Head of Science, Biohub. Founder and scientific director of the ESM project.

Trenton Bricken

@TrentonBricken

Trying to make AI go well @AnthropicAI

Casey Handmer

@CJHandmer

Physicist, Immigrant, Pilot, Dad. Former Caltech, Hyperloop, NASA JPL. Founder @terraformindies. Hiring!

Paul Buchheit

@paultoo

For entertainment purposes only

Marius Hobbhahn

@MariusHobbhahn

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

Lama Ahmad لمى احمد

@_lamaahmad

@OpenAI. views my own.

Peter Wildeford🇺🇸🚀

@peterwildeford

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

Samuel Hammond 🦉

@hamandcheese

Chief economist + AI Policy Director, @joinFAI. Nonresident fellow @NiskanenCenter. Pluralist. 'The world is second best, at best.' | samuel@thefai.org

Brydon Eastman

@brhydon

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

Scott Gottlieb, MD 🇺🇸

@ScottGottliebMD

Senior Fellow @AEI. Partner @NEA. Contributor @CNBC. 23rd Commissioner of the @US_FDA. Public Boards: @Pfizer @Illumina @TempusAI @UnitedHealthGrp

Sriram Krishnan

@sriramk

AI at the @whitehouse. pro wrestling fan. official: @skrishnan47

Fred Ehrsam

@FEhrsam

Co-founder @Nudge, @Paradigm, @Coinbase

Casey Newton

@CaseyNewton

Writing @platformer. Co-hosting Hard Fork @nytimes. Posting good tweets to Instagram stories @crumbler. casey@platformer.news | http://mastodon.social/@caseynewton

Steven Strogatz

@stevenstrogatz

Mathematician, writer, Cornell professor. All cards on the table, face up, all the time.

Will Manidis

@WillManidis

and I saw the holy city, the new jerusalem, coming down out of heaven

Julia Galef

@juliagalef

Author of THE SCOUT MINDSET and host of the Rationally Speaking podcast

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🌹

Ava

@noampomsky

text II is active, moved by pleasure

Dr. Alex Wissner-Gross

@alexwg

The Innermost Loop, also on Substack (http://alexwg.org/su), LinkedIn (http://alexwg.org/li), Spotify (http://alexwg.org/sp), Threads (http://alexwg.org/th), and YouTube (http://alexwg.org/yt).

Stefan Schubert

@StefanFSchubert

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

Eli Dourado

@elidourado

Philanthrocapitalism at @AsteraInstitute. 🚀 tfp/acc

bayes

@bayeslord

100% organic human tokens

Saloni

@salonium

Co-founder & editor @WorksInProgMag. Writer, Scientific Discovery. Podcaster, Hard Drugs. Advisor, @coeff_giving. // Prev @OurWorldInData. 🏳️‍🌈

Ruxandra Teslo 🧬

@RuxandraTeslo

Clinical Trial Abundance | Fertility | @EmergentVentures | previously: PhD @sangerinstitute | long-form https://www.writingruxandrabio.com/

Andy Masley

@AndyMasley

When the going gets weird the weird turn pro.

David Manheim

@davidmanheim

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

Silvana Konermann

@SKonermann

Cofounder @arcinstitute and Assistant Professor @Stanford. HHMI Hanna Gray Fellow. CRISPR, RNA and Alzheimer’s via @salkinstitute, @MIT and @eth

Jasmine Wang

@j_asminewang

Heidi L. Williams

@heidilwilliams_

professor @dartmouth + science policy @ifp // leveraging research to promote science and progress

fouad

@fouadmatin

@openai codex, cyber, research, security

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

James Dyett

@dyett

GTM at @openai

Ashvin Nair

@ashvinair

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

Shantanu Jain

@hauntsaninja

@OpenAI. CPython core dev, making Python typing better https://hauntsaninja.github.io awesome in every mausam.