Karl Cobbe (@karlcobbe) · Digg

KC

Karl Cobbe

23Following117Top Followers3.9KTotal Followers

BIO

Deep RL research @openai

#1534in/AI#1678in/Tech

Top followers

Sam Altman

@sama

AI is cool i guess

John Schulman

@johnschulman2

Recently started @thinkymachines. Interested in reinforcement learning, alignment, birds, jazz music

NB

#30

Noam Brown

@polynoamial

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

Jan Leike

@janleike

AI research @AnthropicAI. Previously OpenAI & DeepMind. Optimizing for a post-AGI future where humanity flourishes. Opinions aren't my employer's.

Jason Wei

@_jasonwei

ai researcher @meta superintelligence labs, past: openai, google 🧠

Mira Murati

@miramurati

Now building @thinkymachines. Previously CTO @OpenAI

Sebastien Bubeck

@SebastienBubeck

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

Tim Rocktäschel

@_rockt

Co-Founder @Recursive_SI, Professor of AI @AI_UCL, PI @UCL_DARK, Fellow @ELLISforEurope. Ex @GoogleDeepMind @AIatMeta @CompSciOxford

Barret Zoph

@barret_zoph

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

Mark Chen

@markchen90

Chief Research Officer at @OpenAI. Coach for the USA IOI Team.

Luke Metz

@Luke_Metz

OpenAI Previously: Thinking Machines, Google Brain

Joshua Achiam

@jachiam0

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

Matthew Johnson

@SingularMattrix

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

Jerry Tworek

@MillionInt

CEO and co-founder of Core Automation former VP of RL @ OpenAI : reasoning models, o3, o1, GPT4, ChatGPT, Codex, RL for robots cautious AI optimist

David Dohan

@dmdohan

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

Eric Zelikman

@ericzelikman

cofounder & ceo @humansand - building ai for humans // was lgtm-ing @xAI, phd-ing @stanford

Yang Song

@DrYangSong

Research Principal of MSL

Bob McGrew

@bobmcgrewai

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

Shunyu Yao

@ShunyuYao12

Language agents

will depue

@willdepue

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

Andrew Carr 🤸

@andrew_n_carr

co-founder leading science @getcartwheel co-founder advisor @arcade_ai Past: Codex @OpenAI, Brain @GoogleAI, world ranked Tetris player

Hongyu Ren

@ren_hongyu

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

Gabriel Synnaeve

@syhw

Nerd & Dad. RL & CodeGen research since before it was cool.

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.

Irwan Bello

@IrwanBello

Supercomputers & Friends, AI & Science. Past: Founding team & Research Lead at @reflection_ai, @OpenAI, Founding team @character_ai, Google Brain

David Luan

@jluan

retired!! former cofounder of @adeptailabs, vp engineering @openai and @amazon, and @google LLMs lead. all about type II fun.

Peter Welinder

@npew

Devices @OpenAI

rapha

@rapha_gl

making models programmable @ openai

Zhiqing Sun

@EdwardSun0909

Lead Agents @Meta MSL TBD Lab. previously posttraining/agent research @OpenAI. CS PhD @LTIatCMU

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

Yu Bai

@yubai01

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

Alex Graveley

@alexgraveley

Co-creator Perplexity Computer, GitHub Copilot, Dropbox Paper. 2x CEO. Thruhiker. Survivor 🎗️

Jiahui Yu

@jhyuxm

Lead Multimodal @Meta Superintelligence Lab. Previously led Perception @OpenAI; co-led Gemini Multimodal @GoogleDeepMind.

Roberta Raileanu

@robertarail

Open-Ended Team Lead and Senior Staff Research Scientist @GoogleDeepMind. Honorary Lecturer @UCL. ex @Meta | @NYU | @Princeton.

Yao Fu

@Francis_YAO_

Scaling @xAI. Previously Gemini 3 perception and project Astra @GoogleDeepMind

Jacob Austin

@jacobaustin132

I sometimes do AI research. I also play piano and climb. NYC. Previously @GoogleDeepMind, @Google Brain. Opinions my own

Chelsea Sierra Voss

@csvoss

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

Rylan Schaeffer

@RylanSchaeffer

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

Isa Fulford

@isafulf

research @openai

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

Scott Gray

@scottgray76

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

Ethan Caballero

@ethanCaballero

ML @Mila_Quebec ; previously @GoogleDeepMind

Anjney Midha

@AnjneyMidha

founder @amppublic • visiting scientist @stanford • teaching @cs153systems

Shuchao Bi

@shuchaobi

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

Gabriel Ilharco

@gabriel_ilharco

AI Research Scientist

Marco Mascorro

@Mascobot

Researching LLMs | Roboticist | Prev: Partner @a16z (inv @cursor_ai, @thinkymachines, @bfl_ml, etc), cofounded Fellow Robots, @singularityu, @BMW Research

Alex Nichol

@unixpickle

Code, AI, and 3D printing. Opinions are mostly my own, sometimes a computer's. Husband of @thesamnichol. Co-creator of DALL-E 2. Researcher @openai.

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

Ross Taylor

@rosstaylor90

Co-founder and CEO @GenReasoning. Previously lots of other things like: reasoning lead Meta AI, Llama 3/2, Galactica, Papers with Code.

Gabriel Goh

@gabeeegoooh

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