BIO
PhD - Post-training @huggingface 🤗 TRL lead maintainer 🇫🇷 in 🇨🇦
AK
@_akhaliq
AI research paper tweets, ML @Gradio (acq. by @HuggingFace 🤗) dm for promo ,submit papers here: https://huggingface.co/papers/submit
John Schulman
@johnschulman2
@thinkymachines. Interested in reinforcement learning, alignment, birds, jazz music
Nathan Lambert
@natolambert
Open model research, founder, director @trillium_labs. Prev. co-led Olmo at Ai2. Writes @interconnectsai, wrote http://posttrainingbook.com
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).
Omar Khattab
@lateinteraction
asst professor @MIT CSAIL @nlp_mit. http://ColBERT.ai, http://DSPy.ai (@DSPyOSS), GEPA, RLMs, Pedagogical RL
Dimitris Papailiopoulos
@DimitrisPapail
Researcher @Microsoft | Prof @UWMadison (on leave) | babas of Inez Lily.
Julien Chaumond
@julien_c
Co-founder and CTO at @huggingface 🤗. ML/AI for everyone, building products to propel communities fwd. @Stanford + @Polytechnique
Alex Graveley
@alexgraveley
Co-creator GitHub Copilot, Perplexity Computer & Comet, Dropbox Paper. 2x CEO of Hackpad and Minion AI. Thruhiker. Survivor 🎗️
Kawin Ethayarajh
@ethayarajh
Assistant Professor of Applied AI @ChicagoBooth @UChicago. PhD @stanfordnlp.
Ajay Jain
@ajayj_
Co-founder @genmoai. Co-created denoising diffusion (DDPM), DreamFusion, Dream Fields. Ex Ph.D. @berkeley_ai, @googleai, @facebookai, @nvidiaai, @mit
Andrew Trask
@iamtrask
most important AI paper i've read (1968): https://tinyurl.com/unn5rh3x @openminedorg @GoogleDeepMind @OxfordUni
Rylan Schaeffer
@RylanSchaeffer
Creating something new. Ex-Meta TBD. On-Leave from Stanford w/ @sanmikoyejo. Prev @ Gemini, MIT, Harvard, Uber, UCL, UC Davis
will brown
@willcb
reward hacking @primeintellect
Rafael Rafailov @ NeurIPS
@rm_rafailov
I work on RL at @thinkymachines. Previously at @StanfordAILab @GoogleDeepMind @UCBerkeley
yobibyte
@y0b1byte
the only yobibyte @ NVIDIA
Alexia Jolicoeur-Martineau
@jm_alexia
Principal Researcher @ Microsoft 🐱💻 2025 ARC Prize Winner I build generative AI for images, videos, text, tabular data, weights, molecules, and video games.
Tanishq Mathew Abraham, Ph.D.
@iScienceLuvr
CEO @SophontAI | Founder @MedARC_AI | PhD at 19 (2023) | ex Research Director Stability AI | Biomed. engineer @ 14 | TEDx talk➡https://bit.ly/3tpAuan
Omar Sanseviero
@osanseviero
MTS at @GoogleDeepMind Building Gemini, Gemma, AI Studio and more. My views ex-Chief Llama Officer @huggingface 🇵🇪🇲🇽
Marco Mascorro
@Mascobot
Researching LLMs | Roboticist | Prev: Partner @a16z (inv @cursor_ai, @thinkymachines, @bfl_ml, etc), cofounded Fellow Robots, @BMW Research
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.
Vincent Weisser
@vincentweisser
ceo @primeintellect — open superintelligence
Dylan Foster 🐢
@canondetortugas
Incoming professor @UCBerkeley in EECS and Statistics. Principal Researcher @ Microsoft Research. AI & RL. Lecture Notes: https://arxiv.org/abs/2312.16730
Georges Harik
@gharik
humans& co-founder, 7th employee google, co-created adwords online, co-created adsense targeting, worked on ai, gmail, calendar, bought android.
Daniel Han
@danielhanchen
Building @UnslothAI • Making open-source LLMs faster, better & more accessible • YC S24 • ex-NVIDIA ML
Ankesh Anand
@ankesh_anand
Research scientist @googledeepmind (Gemini Post-Training), prev phd @milamontreal. RL for Gemini 2.5, Gemini 3.0, Gemini 4 and IMO DeepThink.
anton
@abacaj
Software
Ross Wightman
@wightmanr
AI / Computer Vision. Ex 🤗. Ex head of Software, Firmware Engineering at a Canadian 🦄. Building AI systems or investing in startups that do it better.
Costa Huang @ COLM 2026
@vwxyzjn
Exploiting physical rewards @periodiclabs. Creator of @cleanrl_lib. Prev: RL @allen_ai @huggingface.
Peter Chen
@peterxichen
Building general purpose robotics at Amazon FAR. Previously Covariant CEO and Co-Founder, @OpenAI, @UCBerkeley PhD.
Pierre-Yves Oudeyer
@pyoudeyer
Research director in AI and CogSci @inria, Head of @flowersInria lab, prev. @MSFTResearch @SonyCSLParis https://www.linkedin.com/in/pierreyvesoudeyer/
Andrew White 🐦⬛
@andrewwhite01
Automating science. Cofounder @EdisonSci. Cofounder @FutureHouseSF. Former prof of chem eng.
You Jiacheng
@YouJiacheng
Cody Blakeney
@code_star
Leading research at @arcee_ai | Formerly Data Research Lead @DbrxMosaicAI | Visiting Researcher @meta | Ph.D | #TXSTFOOTBALL fan | http://linktr.ee/code_star
Lewis Tunstall @ COLM 🌉
@_lewtun
🤠 post-training @huggingface
Miles Cranmer
@MilesCranmer
Assistant Professor @ Cambridge. Works on AI for the physical sciences.
Vaibhav (VB) Srivastav
@reach_vb
founder mode @OpenAI | ex @huggingface | F1 fan | *opinions my own
Remi Cadene
@RemiCadene
Co-Founder and CEO at @UMA_Robots Building on top of @LeRobotHF
Leandro von Werra
@lvwerra
Head of research @huggingface
Tristan
@ItsTKai
Researcher @OpenAI - Opinions are my own.
Wing Lian (caseus)
@winglian
@axolotl_ai OSS maintainer. Axolotl AI founder. AI/ML tinkerer. Building tools for everyone.
Karel
@KarelDoostrlnck
post training @OpenAI. prev: @stanfordnlp, @ugent. Belgian.
Andrew Beam
@AndrewLBeam
We can only see a short distance ahead, but we can see plenty there that needs to be done. CTO, @LilaSciences Prev: Prof @Harvard | Cofounder @generate_biomed
Loubna Ben Allal
@LoubnaBenAllal1
Jenny Zhang
@jennyzhangzt
Improving @Recursive_SI
Kaiyu Yang
@KaiyuYang4
Lead Scientist @Apodex_AI. Previously: Research Scientist @Meta FAIR, Postdoc @Caltech, PhD @PrincetonCS, Undergrad @Tsinghua_Uni.
Cong Lu
@cong_ml
Founding Member @Recursive_SI. Prev: @GoogleDeepMind | @UBC_CS | @UniofOxford | @SakanaAILabs | @Waymo. The AI Scientist | Genie | SIMA
Shashwat Goel
@ShashwatGoel7
Training Decision Assistants Past work: http://openforecaster.github.io, Training AI Co-scientists, Illusion of Diminishing Returns
Saurabh Shah
@saurabh_shah2
barista @humansand prev @allen_ai @Apple @Penn 🎤dabbler of things🎸 🐈⬛enjoyer of cats 🐈 and mountains🏔️he/him
Hamish Ivison @ COLM
@hamishivi
Antipodean Abroad. I (try to) do NLP research. PhD student @uwcse, prev @allen_ai @google @Sydney_Uni 🇦🇺🇨🇦🇬🇧
Gabriel Dulac-Arnold
@gabepsilon
Artisanal Neuromancer @ UMA Robotics; x-Thinking & RL Gemini, x-Brain, x-DeepMind. Poking at neural networks to make them do something.
