David Petersen @mouseguard.bsky.social Eisner Award winning creator of Mouse Guard. Covers for TMNT, Dark Crystal, Usagi Yojimbo, and Cards for MtG Bloomburrow.
MouseGuard.bigcartel.com
Thomas Steinke @stein.ke Researcher in computer science, math, machine learning, (differential) privacy, AI, etc. at Anthropic.
Kiwi๐ณ๐ฟ in California๐บ๐ธ
http://stein.ke/
Sasho Nikolov @thesasho.bsky.social Associate professor at U of Toronto. Computer science and math research: (differentially) private data analysis, geometry, discrepancy, optimization.
Jon Ullman @thejonullman.bsky.social Associate Professor of Computer Science at Northeastern University in Boston. Dad. Imposter.
Jess Sorrell @optimistsinc.bsky.social Assistant prof at JHU CS. Interested in theory of ML, privacy, cryptography. All cat pictures my own and do not represent the cats of my employer
Gautam Kamath @gautamkamath.com Assistant Prof of CS at the University of Waterloo, Faculty and Canada CIFAR AI Chair at the Vector Institute. Joining NYU Courant in September 2026. Co-EiC of TMLR. My group is The Salon. Privacy, robustness, machine learning.
http://www.gautamkamath.com
Bryan Chan @chanpyb.bsky.social PhD student at University of Alberta. Interested in reinforcement learning, imitation learning, machine learning theory, and robotics
https://chanb.github.io/
Kimon Fountoulakis @kfountou.bsky.social Associate Professor at CS UWaterloo
Machine Learning
Lab: opallab.ca
Rachel Lawrence @rachel-law.bsky.social Organic machine turning tea into theorems โ๏ธ
AI @ Microsoft Research โก๏ธ Goal: Teach models (and humans) to reason better
Letโs connect re: AI for social good, graphs & network dynamics, discrete math, logic ๐งฉ, ๐ฅพ,๐จ, protecting democracy๐ฝ
www.rlaw.me
Tim van Erven @handle.invalid Associate professor in machine learning at the University of Amsterdam. Topics: (online) learning theory and the mathematics of explainable AI.
www.timvanerven.nl
Theory of Interpretable AI seminar: https://tverven.github.io/tiai-seminar
Ioannis Kontoyiannis @kontoyiannis.bsky.social Information theory, probability, statistics. Churchill Professor of Mathematics of Information @UofCambridge: dpmms.cam.ac.uk/person/ik355/ ๐งฎ #MathSky ๐งช #Science
[used to be @yiannis_entropy at the other place]
Amartya Sanyal @amartyasanyal.bsky.social Assistant Professor @Dept. Of Computer Science, University of Copenhagen, Ex Postdoc @MPI-IS, ETHZ, PhD @University of Oxford, B.Tech @CSE,IITK.
Ben Rubinstein @bipr.bsky.social ML & Privacy Prof at the University of Melbourne, Australia. Deputy Dean Research. Prev Microsoft Research, Berkeley EECS PhD. @bipr on the X bird site. He/him.
Gavin Brown @gavin-brown.bsky.social Postdoc at UW CSE. Differential privacy, memorization in ML, and learning theory.
Steven Wu @zstevenwu.bsky.social Computer science professor at Carnegie Mellon. Researcher in machine learning. Algorithmic foundations of responsible AI (e.g., privacy, uncertainty quantification), interactive learning (e.g., imitation/reinforcement learning).
https://zstevenwu.com/
Gintare Karolina Dziugaite @gkdziugaite.bsky.social Sr Research Scientist at Google DeepMind, Toronto. Member, Mila. Adjunct, McGill CS. PhD Machine Learning & MASt Applied Math (Cambridge), BSc Math (Warwick). gkdz.org 
Carl Allen @carl-allen.bsky.social Laplace Junior Chair, Machine Learning
ENS Paris. (prev ETH Zurich, Edinburgh, Oxford..)
Working on mathematical foundations/probabilistic interpretability of ML (what NNs learn๐คทโโ๏ธ, disentanglement๐ค, king-man+woman=queen?๐โฆ)
Idan Attias @idanattias.bsky.social Postdoc researcher at IDEAL Institute in Chicago, hosted by UIC and TTIC.
My research interests are in machine learning theory, data-driven sequential decision-making, and theoretical computer science.
https://www.idanattias.com/
Quanquan Gu @quanquangu.bsky.social Professor @UCLA, Research Scientist @ByteDance | Recent work: SPIN, SPPO, DPLM 1/2, GPM, MARS | Opinions are my own
Erfan Mirzaei @erfunmirzaei.bsky.social Researcher @PontilGroup.bsky.social| Ph.D. Student @ellis.eu, @Polytechnique, and @UniGenova.
Interested in (deep) learning theory and others.
https://erfunmirzaei.github.io/
Tosca Lechner @toscalechner.bsky.social Post-doctoral Fellow @ Vector Institute, Toronto
Mihai Nica @mihainica.bsky.social Mathematician working on probability and ML at U of Guelph in Canada. I also make math videos at https://youtube.com/@MihaiNicaMath
Cyrus Rashtchian @cyroid.bsky.social Researcher at Google. Improving LLM factuality, RAG and multimodal alignment and evaluation. San Diego. he/him โ๏ธ๐ฑ๐ง๐ป๐ Prev UCSD, MSR, UW, UIUC.
Yuli Slavutsky @yulislavutsky.bsky.social Stats Postdoc at Columbia, @bleilab.bsky.social
Statistical ML, Generalization, Uncertainty, Empirical Bayes
https://yulisl.github.io/
Michael Kearns @mkearnsphilly.bsky.social CS prof at Penn, Amazon Scholar in AWS. Interested in ML theory and related topics, as well as photography and Gilbert and Sullivan. Website: www.cis.upenn.edu/~mkearns
Jane Wang @janexwang.bsky.social Staff research scientist at Google DeepMind. AI and neuro.
Former physicist, current human.
Find more at www.janexwang.com
Prithviraj "Raj" Ammanabrolu @rajammanabrolu.bsky.social AI, RL, NLP, Games Asst Prof at UCSD
Research Scientist at Nvidia
Lab: http://pearls.ucsd.edu
Personal: prithvirajva.com
Sam Gershman @gershbrain.bsky.social Professor, Department of Psychology and Center for Brain Science, Harvard University
https://gershmanlab.com/
Maxim Raginsky @mraginsky.bsky.social web: http://maxim.ece.illinois.edu
substack: https://realizable.substack.com
angela zhou @angelamczhou.bsky.social assistant prof at USC Data Sciences and Operations and Computer Science; phd Cornell ORIE.
data-driven decision-making, operations research/management, causal inference, algorithmic fairness/equity
bureaucratic justice warrior
angelamzhou.github.io
Robin Ranjit Singh Chauhan @robinchauhan.bsky.social Host TalkRL Podcast, Aspiring RL researcher
AgFunder VC Head of Eng, Ex-MSFT, Waterloo computer engineering
Sunshine Coast BC Canada
Peter Henderson @peterhenderson.bsky.social Assistant Professor, leading the Polaris Lab @ Princeton (https://www.polarislab.org/); Researching: RL, Strategic Decision-Making+Exploration; Law
Miguel Vasco @miguelvasco.bsky.social Postdoc at @kthuniversity.bsky.social.
Past: @gaipslab.bsky.social; Sony AI.
Interested in all things RL and Multimodal.
miguelvasco.com
Lucas Alegre @lnalegre.bsky.social Professor at INF - @ufrgs.br | Ph.D. in Computer Science. I am interested in multi-policy reinforcement learning (RL) algorithms.
Personal page: https://lucasalegre.github.io
Eli Sennesh @elisennesh.bsky.social Abolish the value function!
Dylan Hadfield-Menell @dhadfieldmenell.bsky.social Assistant Prof of AI & Decision-Making @MIT EECS
I run the Algorithmic Alignment Group (https://algorithmicalignment.csail.mit.edu/) in CSAIL.
I work on value (mis)alignment in AI systems.
https://people.csail.mit.edu/dhm/
Laura Ana Bustamante, PhD @lauraabusta.bsky.social ๐ฉ๐ปโ๐ฌ Postdoc @U Medical Center Groningen. Formerly: postdoc @WashU St. Louis & Neuro PhD @Princeton, researching cognitive control & decision making, neurodivergent in computational psychiatry, she/her, Latina ๐จ๐บ. Views my own. Stand Up for Science!
Sai Prasanna @saiprasanna.in See(k)ing the surreal
Causal World Models for Curious Robots @ University of Tรผbingen/Max Planck Institute for Intelligent Systems ๐ฉ๐ช
#reinforcementlearning #robotics #causality #meditation #vegan
Karim Farid @kifarid.bsky.social PhD. Student @ELLIS.eu @UniFreiburg with Thomas Brox and Cordelia Schmid
Understanding intelligence and cultivating its societal benefits
https://kifarid.github.io
Gaspard Lambrechts @gsprd.be Postdoctoral researcher working on RL in POMDP at McGill and Mila - gsprd.be
@vladmnih.bsky.social @vladmnih.bsky.social 
Michiel van de Panne @mvandepanne.bsky.social UBC Computer Science; physics-based models of human movement; deep reinforcement learning; animation; robotics
Mike Johanson @mikebjohanson.johanson.ca Rogue game theorist and RL scientist in ๐จ๐ฆ. Formerly: co-founder Artificial.Agency, RS DeepMind, PhD UAlberta, Poker AI. Gaming ๐ฎ๐ฒ, curling ๐ฅ, knitting ๐งถ, geocaching ๐บ๏ธ. (he/him).
Vincent Mai @vincentmai.bsky.social ML research scientist @LawZero
Claas Voelcker @cvoelcker.bsky.social For professional, see https://cvoelcker.de
If I seem very angry, check if I have been watered in the last 24 hours.
Now ๐บ๐ธ flavoured, previously available in ๐จ๐ฆ and ๐ฉ๐ช
Marcel Hussing @marcelhussing.bsky.social PhD student at the University of Pennsylvania. Prev, intern at MSR, and Meta FAIR. Interested in reliable and replicable reinforcement learning, robotics and knowledge discovery: https://marcelhussing.github.io/
All posts are my own.
Paul Masset @paulmasset.bsky.social Assistant Professor, McGill University | Associate Academic Member, Mila - Quebec AI Institute | Neuroscience and AI, learning and inference, dopamine and cognition
https://massetlab.org/
Sikata Sengupta @sikatasengupta.bsky.social cs phd @upenn advised by Michael Kearns, Aaron Roth, and Duncan Watts| previously @stanford | she/her
https://psamathe50.github.io/sikatasengupta/
Phillip Isola @phillipisola.bsky.social Associate Professor in EECS at MIT. Neural nets, generative models, representation learning, computer vision, robotics, cog sci, AI.
https://web.mit.edu/phillipi/
Daniel Fried @daniel-fried.bsky.social Assistant prof at LTI CMU. Working on NLP: language interfaces, applied pragmatics, language-to-code, grounding. https://dpfried.github.io/
Isadora White @izzycw.bsky.social PhD Student at UC San Diego | LLM Agents, Reinforcement Learning, Human-AI Collaboration, Multi-Agent Systems
Dongyan Lin @dongyanl1n.bsky.social Postdoc at Meta FAIR, Comp Neuro PhD @McGill / Mila. Looking at the representation in brains and machines ๐ฌ https://dongyanl1n.github.io/
Vahid Behzadan @behzadan.bsky.social Professionally curious about the science of making bad decisions; AI safety and security researcher; Assistant Professor of CS and Data Science & Director of the Secure and Assured Intelligent Learning (SAIL) lab @ University of New Haven.
James MacGlashan @jmac-ai.bsky.social Ask me about Reinforcement Learning
Research @ Sony AI
AI should learn from its experiences, not copy your data.
My website for answering RL questions: https://www.decisionsanddragons.com/
Views and posts are my own.
Serena Booth @reniebird.bsky.social CS Prof at Brown University, PI of the GIRAFFE lab, former AI Policy Advisor in the US Senate, co-chair of the ACM Tech Policy Subcommittee on AI and Algorithms.
PhD at MIT CSAIL '23, Harvard '16, former Google APM. Dog mom to Ducki.
Mattie Fellows @mattieml.bsky.social Reinforcement Learning Postdoc at FLAIR, University of Oxford @universityofoxford.bsky.social
All opinions are my own.
Kim Stachenfeld, PhD @neurokim.bsky.social Neuro + AI Research Scientist at DeepMind; Affiliate Professor at Columbia Center for Theoretical Neuroscience.
Likes studying learning+memory, hippocampi, and other things brains have and do, too.
she/her.
Roma Patel @romapatel.bsky.social research scientist @deepmind. language & multi-agent rl & interpretability. phd @BrownUniversity '22 under ellie pavlick (she/her)
https://roma-patel.github.io
Cฤtฤlina Cangea, PhD @catalinacangea.bsky.social ex-GenMusic co-lead @ DeepMind ๐ฉ๐ปโ๐ป
๐ธ๐น, prog/metal/alt/classic rock, jazz, poetry, ๐ฃ๐ปโโ๏ธ๐ด๐ปโโ๏ธ๐ง๐ปโโ๏ธ, traveling, festivals. Sometimes โค๏ธs AI/ML/data ๐ Attends too many concerts ๐ซ King's/Darwin/Murray Edwards College, University of Cambridge ๐
Victoria Dean (she/they) @vdean.bsky.social Teaching Faculty @ Princeton University | CMU, MIT alum | reinforcement learning, AI ethics, equity and justice, baking | ADHD ๐๐๐
Harshit Sikchi @harshitsikchi.bsky.social Research @OpenAI. I study Reinforcement Learning. PhD from UT Austin. Previously FAIR Paris, Meta US, NVIDIA, CMU, and IIT Kharagpur.
Website: https://hari-sikchi.github.io/
Zico Kolter @zicokolter.bsky.social Professor and Head of Machine Learning Department at Carnegie Mellon. Board member OpenAI. Chief Technical Advisor Gray Swan AI. Chief Expert Bosch Research.
Claire Vernade @claireve.bsky.social Professor at UT Nuremberg, Germany
Iโm ๐ซ๐ท and I work on RL and lifelong learning. Mostly posting on ML related topics.
Antoine Moulin @antoine-mln.bsky.social doing a phd in RL/online learning on questions related to exploration and adaptivity
> https://antoine-moulin.github.io/
Bram Grooten @bramgrooten.bsky.social PhD student at the TU Eindhoven. Researching deep learning, RL, sparse neural networks, robotics.
Tom Ringstrom @noreward4u.bsky.social Reward-Free Model-based Maximalist. High-dimensional Empowerment. Self-Preserving Autonomous Agents. Theories of intelligence grounded in compositional control.
Tom Dupuis @tomdupuis.bsky.social autonomating software manufacturing @ The Open Engine Company
https://theopenengine.com/
previously: voice agents, deep RL, representation learning, robotics
Raymond Chua @raymondrchua.bsky.social NeuroAI PhD Candidate at McGill / Mila.
Loves: ๐ง ๐๏ธ ๐๏ธ ๐๐ปโโ๏ธ ๐ด๐ปโโ๏ธ ๐๐ปโโ๏ธ ๐จ๐โ
https://raymondchua.github.io
Aditya Makkar @adityamakkar.bsky.social In search of mathematics and ML content.
PhD@NYU
Daniel Jiang @danielrjiang.bsky.social Research Scientist Meta, Adjunct Professor at University of Pittsburgh. Interested in reinforcement learning, approximate DP, adaptive experimentation, Bayesian optimization, & operations research. http://danielrjiang.github.io
๐Chicago, IL
Mandana Samiei @mandanas.bsky.social PhD candidate at McGill and Mila - Quebec AI Institute w/ Blake Richards and Doina Precup.
Interested in Reinforcement Learning, Continual Learning and Human Cognition.
Based in Montreal. ๐จ๐ฆ
Roy Fox @royf.org Assistant Professor of Computer Science, UC Irvine
Website: royf.org
Allen Nie @allenanie.bsky.social Stanford CS PhD working on RL and LLMs with Emma Brunskill and Chris Piech. Co-creator of Trace. Prev @GoogleDeepMind @MicrosoftResearch
Specifically
- Offline RL
- In-context RL
- Causality
https://anie.me/about
Unverified hot takes go to this account
Luisa Zintgraf @luisazintgraf.bsky.social RL & Meta-Learning @ DeepMind.
vmoens @vmoens.bsky.social Member of technical staff @periodiclabs
Open-source/open science advocate
Maintainer of torchrl / tensordict / leanrl
Former MD - Neuroscience PhD
https://github.com/vmoens
Sasha Abramowitz @sash-4.bsky.social Research engineer at InstaDeep working on multi-agent RL
Ahana (she/her) @ahana.bsky.social Reinforcement Learning PhD student, UPF Barcelona.
Uncertain in the face of optimism.
ahanadeb.com
Willem Rรถpke @willemropke.bsky.social PhD student | Interested in all things decision-making and learning
Ed Clark @clarkai.bsky.social PhD student studying AI for tactical decision making in complex ocean environments @uniofbath.bsky.social
Distinctly amateur cyclist, triathlete, sailor, climber
https://scholar.google.com/citations?user=WE-zZMoAAAAJ&hl=en
Vincent Francois-Lavet @vinfl.bsky.social Assistant Professor in machine learning @VUAmsterdam
Abstract representations+reinforcement learning.
Cathy Wu @cathywu.bsky.social AI & Transportation | MIT Associate Professor
Interests: AI for good, sociotechnical systems, machine learning, optimization, reinforcement learning, public policy, gov tech, open science.
Science is messy and beautiful.
http://www.wucathy.com
Csaba Szepesvari @skiandsolve.bsky.social โท๏ธ ML Theorist carving equations and mountain trails | ๐ดโโ๏ธ Biker, Climber, Adventurer | ๐ง Reinforcement Learning: Always seeking higher peaks, steeper walls and better policies.
https://ualberta.ca/~szepesva
hardmaru @hardmaru.bsky.social Co-Founder & CEO, Sakana AI ๐ โ @sakanaai.bsky.social
Visit โ https://sakana.ai/
Amir-massoud Farahmand @sologen.bsky.social Research Goal: Understanding the computational and statistical principles required to design AI/RL agents.
Associate Professor at Polytechnique Montrรฉal and Mila. ๐จ๐ฆ
academic.sologen.net
xuan (ษษฅษn / sh-yen) @xuanalogue.bsky.social Assistant professor at NUS. Scaling cooperative intelligence & infrastructure for an increasingly automated future. PhD @ MIT ProbComp / CoCoSci. Pronouns: ็ฅ/ไผ
Kale-ab Tessera @kale-ab.bsky.social ML PhD Student @ Uni. of Edinburgh, working on Multi-Agent Problems. | Organiser @deeplearningindaba.bsky.socialโฌ @rl-agents-rg.bsky.socialโฌ | ๐ช๐น๐ฟ๐ฆ
kaleabtessera.com
Michael Bernstein @mbernst.bsky.social CS Professor at Stanford
Joel Z Leibo @jzleibo.bsky.social www.jzleibo.com
Natasha Jaques @natashajaques.bsky.social Assistant Professor at UW and Staff Research Scientist at Google DeepMind. Social Reinforcement Learning in multi-agent and human-AI interactions. PhD from MIT. Check out https://socialrl.cs.washington.edu/ and https://natashajaques.ai/.
Aaron Roth @aaroth.bsky.social Professor at Penn, Amazon Scholar at AWS. Interested in machine learning, uncertainty quantification, game theory, privacy, fairness, and most of the intersections therein
Natalie Collina @ncollina.bsky.social CS PhD student at UPenn studying strategic human-AI interaction. Nataliecollina.com
Chris Amato @cjdamato.bsky.social Associate Professor at Northeastern University and father of 3. Interests include artificial intelligence, reinforcement learning, and robotics (he/him).
Gillian Hadfield @ghadfield.bsky.social Economist and legal scholar turned AI researcher focused on AI alignment and governance. Prof of government and policy and computer science at Johns Hopkins where I run the Normativity Lab. Recruiting CS postdocs and PhD students. gillianhadfield.org
Nicholas A. Christakis @nachristakis.bsky.social Sterling Professor of Social and Natural Science at Yale University. Sociologist. Network Scientist. Physician. Author of Apollo's Arrow; Blueprint; Connected; and Death Foretold. Director of the Human Nature Lab: https://humannaturelab.net
Uri Hertz @urihertz.bsky.social PI at the cog-sci dept at the university of Haifa. Social-cognitive-computational psychology, and sometimes neuroscience.
www.socialdecisionlab.net 
Anastasia Bizyaeva @anastasiabzv.bsky.social Assistant professor at Cornell; collective behavior, networks, control, dynamical systems, nonlinearity. In constant search of inspiration.
https://anastasiabzv.github.io
Edgar Duenez-Guzman @eaduenez.bsky.social AI researcher, Cooperative AI, AI for Social Good, Multi Agent Systems, Game Theory, Evolutionary Biology.
Opinions are my own.
Patrick Shafto @patrickshafto.bsky.social Prof: Rutgers; Program Manager: DARPA; Scientist-at-Large: Redpoll.
Math! Machine learning! Cognitive Science!