Peter Henderson @PeterHndrsn
Assistant Professor @ Princeton (ML/RL+strategic decision-making+Law). Prev: Stanford (JD/PhD); McGill/Mila; Meta FAIR; Amazon; Cal Supreme Court. peterhenderson.co Stanford, CA Joined February 2012-
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Interpretive ambiguity is a major challenge for legal systems and AI models. But AI doesn’t have the institutional safeguards that the law uses to manage ambiguity. Carnegie president Mariano-Florentino Cuéllar and co-authors on what to do, on @arxiv: arxiv.org/abs/2509.01186
Evals are hard.
Useful rm alternative for agent workflows!
I'm starting to get emails about PhDs for next year. I'm always looking for great people to join! For next year, I'm looking for people with a strong reinforcement learning, game theory, or strategic decision-making background. (As well as positive energy, intellectual…
📢 4 days left to submit to the Workshop on Multi-Turn Interaction for LLMs at #NeurIPS2025! Exciting updates: 🥂 We're partnering with @PrimeIntellect to co-host a post-event reception! A great chance to connect with researchers from industry & academia. 🤖 Thrilled to have…
"Agentic AI has been weaponized. AI models are now being used to perform sophisticated cyberattacks, not just advise on how to carry them out." From @AnthropicAI 's latest AI Threat Intelligence Report
We should basically assume that no model level safeguards will be effective when it comes to offensive cyber uses. We need to be leveling up AI-assisted defensive cyber directly, at scale, and quickly. Imo agencies like CISA should be playing a much bigger role here.
We should basically assume that no model level safeguards will be effective when it comes to offensive cyber uses. We need to be leveling up AI-assisted defensive cyber directly, at scale, and quickly. Imo agencies like CISA should be playing a much bigger role here.
If firms aren’t seeing growth from AI, it could be because current deployments replace existing labor, instead of scaling output. AI policy and governance agenda for 2025+ needs to put labor at the forefront.
If firms aren’t seeing growth from AI, it could be because current deployments replace existing labor, instead of scaling output. AI policy and governance agenda for 2025+ needs to put labor at the forefront.
🚨 #Neurips2025 Workshop Alert: Biosecurity Safeguards for #GenerativeAI Link : biosafe-gen-ai.github.io Deadline extended: August 29, 2025 AOE @Yoshua_Bengio @PeterHndrsn @jmuiuc @Rbaltman @Tkaraletsos @MeganBlewett @geochurch @lecong @MengdiWang10 @amritsinghbedi3 @ZaixiZhang
New paper from folks on optimal hyperparameters and scaling for value functions. Getting stable TD-updates really does require an understanding of how your VF will saturate, etc. I remember back in ~2017-18 one trick was even to use an L-BFGS optimizer to get stability on the…
Do we need to be concerned about quickly-growing #AI companionship? 💡New on the CITP Blog: Emotional Reliance on AI: Design, Dependency, & the Future of Human Connection by postdoc @InyoungCheong, Quan Ze Chen, Prof @manoelribeiro, +Prof @PeterHndrsn blog.citp.princeton.edu/2025/08/20/emo…
New work from Hartline, Hu & Wu: is there a truthful calibration metric in sequential settings (i.e., better than ECE)? Seems like the answer is yes! Super important research direction as we think about multi-step uncertainty estimation from agents in high stakes settings.
Come work with us! The Neuroscience Institute and the Department of Psychology at Princeton University are searching for a tenure-track Assistant Professor in the area of human cognitive neuroscience, to be hired jointly in Psychology and Neuroscience: puwebp.princeton.edu/AcadHire/apply…

Percy Liang @percyliang
84K Followers 417 Following Associate Professor in computer science @Stanford @StanfordHAI @StanfordCRFM @StanfordAILab @stanfordnlp | cofounder @togethercompute | Pianist
Jim Fan @DrJimFan
325K Followers 3K Following NVIDIA Director of Robotics & Distinguished Scientist. Co-Lead of GEAR lab. Solving Physical AGI, one motor at a time. Stanford Ph.D. OpenAI's 1st intern.
Pablo Samuel Castro @pcastr
13K Followers 829 Following Señor swesearcher @ Google DeepMind. Adjunct prof @ U de Montreal & Mila. Musician. From 🇪🇨 living in 🇨🇦.
Csaba Szepesvari @CsabaSzepesvari
11K Followers 723 Following "If there is not folly in the world, then the world itself is folly. You must understand that mistakes are not always regrets." - Paul Tobin, Bandette🤠
Khimya @khimya
4K Followers 975 Following Research Scientist @GoogleDeepmind Affiliate Faculty @Mila_Quebec Past: PhD @mcgillu @MSFTResearch @Intel @UF @IITKanpur Bosch @VIT_univ she/her Views are mine!
Christopher Manning @chrmanning
151K Followers 228 Following Director, @StanfordAILab. Assoc. Director, @StanfordHAI. Founder, @stanfordnlp. Prof. CS & Linguistics, @Stanford. IP @aixventureshq. 🇦🇺 Do #NLProc & #AI. 👋
rishi @RishiBommasani
6K Followers 2K Following Societal/economic impacts of AI; AI policy & governance @StanfordHAI Stanford CS PhD w/ @percyliang @jurafsky Cornell CS undergrad w/ @clairecardie
Zachary Lipton @zacharylipton
63K Followers 2K Following Cofounder & CTO: @AbridgeHQ, Professor: CMU/@acmi_lab, Creator: @d2l_ai & https://t.co/QQt98VNLUp, Relapsing 🎷
Sam Bowman @sleepinyourhat
50K Followers 3K Following AI alignment + LLMs at Anthropic. On leave from NYU. Views not employers'. No relation to @s8mb. I think you should join @givingwhatwecan.
Koustuv Sinha @koustuvsinha
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Gautam Kamath @thegautamkamath
57K Followers 568 Following Assistant Prof of CS @UWaterloo, Faculty @VectorInst, Canada @CIFAR_News AI Chair. Joining @NYU_Courant September 2026. Co-EiC @TmlrOrg. I lead @TheSalonML.
Eugene Vinitsky (@RLC... @EugeneVinitsky
20K Followers 2K Following This is the site where I talk about the attacks on science and immigration. Science is on the other site. Lab website: https://t.co/vrtbcqRyRn
Nathan Lambert @natolambert
56K Followers 852 Following Figuring out AI @allen_ai, open models, RLHF, fine-tuning, etc Contact via email. Writes @interconnectsai Wrote The RLHF Book Mountain runner
Miles Brundage @Miles_Brundage
61K Followers 12K Following AI policy researcher, wife guy in training, fan of cute animals and sci-fi, Substack writer, stealth-ish non-profit co-founder
Shagun Sodhani @shagunsodhani
4K Followers 891 Following @GoogleDeepMind Previously FAIR (@AIatMeta), @Mila_Quebec, @MSFTResearch, @AdobeResearch, @IITRoorkee. All views are my own.
Sara Hooker @sarahookr
49K Followers 9K Following I lead @Cohere_Labs. Formerly Research @Google Brain @GoogleDeepmind. ML Efficiency at scale, LLMs, ML reliability. Changing spaces where breakthroughs happen.
David Krueger @DavidSKrueger
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Christopher Potts @ChrisGPotts
14K Followers 642 Following Stanford Professor of Linguistics and, by courtesy, of Computer Science. Member of technical staff @stanfordnlp and @StanfordAILab. Co-founder @ Bigspin AI.
Abhinav Java @abhinav_java
99 Followers 571 Following navigating the sea of entropy RF @Microsoft Research | Prev @Adobe, @dtu_delhi Looking for PhD opportunities!
Marzieh Fadaee @mziizm
1K Followers 546 Following seeks to understand language. Head of @Cohere_Labs. PhD from @UvA_Amsterdam. https://t.co/YI5NC5J5e4. [email protected].
Drago Indjic/Инђи... @dindjic
3K Followers 3K Following Assistant/Adjunct Professor @LondonBSchool @QMUL @UCL_IFT, ex hedge funds, било па прошло, emigrante de aquí y allá. Don't you dare guessing my next tweet.
Hanning Zhou @muzhnoom
0 Followers 2 Following
Muhammad Anang Mahrub @MaryOreillyyy
2 Followers 47 Following
云创兽Ai @Rengerr7356
0 Followers 19 Following 🚀 Stock novice, growing girl! primely into stock investing, eager for pro tips. Chat AI stocks via DM! 🚀 #ValueInvesting
Sam @Sam71629780
1 Followers 98 Following
Alessandro Sellitto @AleSell_Econ
23 Followers 839 Following Looking for a PostDoc in Platform/Digital Economics/IO. PhD in Economics. Research Affiliate @DICEHHU. Previously @EU_Commission, @JWI_Berlin and @Unibocconi
Phong Do @phong_dnt
23 Followers 373 Following Natural Language Processing - Speech Processing - Information Retrieval
Shakti Mb @slothi_mb
12 Followers 204 Following
Yujin Tang @yujintang99
2K Followers 4K Following CS PhD Student @dartmouth, previousely intern @AlibabaGroup Damo Academy, BS @sjtu1896, Msc @cuhksz, Visiting @ucmerced | Computer Vision
Rajeev Verma @RaajeevVerma
137 Followers 207 Following so we beat on, boats against the current, borne back ceaselessly into the past. PhDing @amlabuva
Vishesh Gupta @shiroyasha263
2 Followers 201 Following
Zian WANG @Aydenwza
1 Followers 56 Following
Gabor P @GaborP479291
3 Followers 98 Following
Yuming DU @yuming_du
1K Followers 4K Following Research Scientist at @Meta GenAI. | PhD in Computer Vision @ImagineEnpc | Opinions are my own
Jeremy Rubin @super_jrub
3K Followers 6K Following Assistant Clinical Professor of Biostatistics @UofMaryland | Director of STARAPTOR Lab for Renal Histopathology and Kidney Transplantation Research
शशांक / Sha... @si4143
4 Followers 60 Following Doctoral student in Finance at IIM Ahmedabad. Interested in Mathematics, AI and Finance.
Arij Riabi @ArijRiabi
595 Followers 2K Following PhD student working on NLP for low-resource, non-standardized language varieties
Jayendra Sreekar @sreekarj1
34 Followers 386 Following Software Developer, Books, Sports - 🏏 🎾, Amateur Photographer
Jongwook Han @jwhansnu
11 Followers 113 Following PhD Student at @SeoulNatlUni Research interest: Value alignment in LLMs. Lab member of : https://t.co/OtCxOTbRLy
metamorphic ape @Metamorphic_ape
204 Followers 3K Following
Sima Jiao @anafisad
831 Followers 495 Following A High performing slot juggling multiples interest. I handle marketing & communication for corporation & contribute to cybesecurity industry in different way
BeautyGraceBrown @5mHjcHqtLSL9Ln3
4 Followers 606 Following Powerful and unstoppable Creating my own path
mnj @mnj_tp
3 Followers 83 Following
Noé Osorio @NoeOsorioPK
1K Followers 2K Following Ex vocalista de Austin tv, Llego corriendo o en bici a todos lados, hablo de Geomática, Estadística, Economía y Movilidades. #rstats
rachmaninoffian @rachmaninoffian
54 Followers 2K Following
Nithin Sivakumaran @_NithinS
6 Followers 37 Following UG Research Assistant at MURGe-Lab w/ @mohitban47, undergrad at @unccs.
Hanbo Xie @PsychBoyH
827 Followers 2K Following Ph.D. student in @NRDLab in @GeorgiaTech. Alum in @uarizona @PKU1898 @cocosci_lab. Co-Founder of @Mind_RL_Hub. Human and AI thinking and reasoning.
Sanath Kumar Krishnam... @skkmurthy
24 Followers 419 Following Research Scientist at Meta. Before that I was a PhD Student at Stanford.
Models Matrices @MatricesLayers
164 Followers 3K Following
Omair Shahid @OmairShahid
633 Followers 3K Following Product of progressive public policy; raised by public libraries and public education that produced a passion for politics. and apparently alliteration
Nikola Selic @nikola_selic
294 Followers 2K Following MSc @TU_Muenchen | Research Student @CWInl TRL Lab | ML4Sys, LLMs | Ex @awscloud @FireboltHQ | https://t.co/dUe2V6in57
Gurunath @guru__nath
94 Followers 5K Following ML/AI Engineer | NLP, Deep Learning, LLMs, GenAI | MS CS from @UUtah Kahlert SoC | Ex- @Zoho
Sjoerd van Steenkiste @vansteenkiste_s
2K Followers 674 Following Researching AI models that can make sense of the world / Gemini @GoogleAI
Rushik Desai @RushikDesai4
204 Followers 644 Following messing with materials. grad student @LifeAtPurdue. alum @iitgn
Meng F @mengf_
16 Followers 587 Following
Yann LeCun @ylecun
948K Followers 764 Following Professor at NYU. Chief AI Scientist at Meta. Researcher in AI, Machine Learning, Robotics, etc. ACM Turing Award Laureate.
Andrej Karpathy @karpathy
1.4M Followers 1K Following Building @EurekaLabsAI. Previously Director of AI @ Tesla, founding team @ OpenAI, CS231n/PhD @ Stanford. I like to train large deep neural nets.
Percy Liang @percyliang
84K Followers 417 Following Associate Professor in computer science @Stanford @StanfordHAI @StanfordCRFM @StanfordAILab @stanfordnlp | cofounder @togethercompute | Pianist
Jim Fan @DrJimFan
325K Followers 3K Following NVIDIA Director of Robotics & Distinguished Scientist. Co-Lead of GEAR lab. Solving Physical AGI, one motor at a time. Stanford Ph.D. OpenAI's 1st intern.
Pablo Samuel Castro @pcastr
13K Followers 829 Following Señor swesearcher @ Google DeepMind. Adjunct prof @ U de Montreal & Mila. Musician. From 🇪🇨 living in 🇨🇦.
Marc G. Bellemare @marcgbellemare
16K Followers 349 Following CSO & co-founder, Reliant AI. Ex RL research lead at Google Brain, DeepMind. Known for Atari 2600 RL benchmark, Distributional RL (MIT Press 2023).
Csaba Szepesvari @CsabaSzepesvari
11K Followers 723 Following "If there is not folly in the world, then the world itself is folly. You must understand that mistakes are not always regrets." - Paul Tobin, Bandette🤠
Khimya @khimya
4K Followers 975 Following Research Scientist @GoogleDeepmind Affiliate Faculty @Mila_Quebec Past: PhD @mcgillu @MSFTResearch @Intel @UF @IITKanpur Bosch @VIT_univ she/her Views are mine!
Christopher Manning @chrmanning
151K Followers 228 Following Director, @StanfordAILab. Assoc. Director, @StanfordHAI. Founder, @stanfordnlp. Prof. CS & Linguistics, @Stanford. IP @aixventureshq. 🇦🇺 Do #NLProc & #AI. 👋
Kyunghyun Cho @kchonyc
77K Followers 2K Following a combination of a mediocre scientist, a mediocre manager, a mediocre advisor & a mediocre physicist at @nyuniversity (@CILVRatNYU) & @PrescientDesign
Edward Grefenstette @egrefen
42K Followers 865 Following FR/US/GB AI/ML Person, Director of Research at @GoogleDeepMind, Honorary Professor at @UCL_DARK, @ELLISforEurope Fellow. All posts are personal.
rishi @RishiBommasani
6K Followers 2K Following Societal/economic impacts of AI; AI policy & governance @StanfordHAI Stanford CS PhD w/ @percyliang @jurafsky Cornell CS undergrad w/ @clairecardie
Jacob Andreas @jacobandreas
20K Followers 951 Following Teaching computers to read. Assoc. prof @MITEECS / @MIT_CSAIL / @NLP_MIT (he/him). https://t.co/5kCnXHjtlY https://t.co/2A3qF5vdJw
Zachary Lipton @zacharylipton
63K Followers 2K Following Cofounder & CTO: @AbridgeHQ, Professor: CMU/@acmi_lab, Creator: @d2l_ai & https://t.co/QQt98VNLUp, Relapsing 🎷
Wojciech Zaremba @woj_zaremba
119K Followers 204 Following Co-Founder of OpenAI https://t.co/OCQ3mpf0IN
Noam Brown @polynoamial
91K Followers 853 Following Researching reasoning @OpenAI | Co-created Libratus/Pluribus superhuman poker AIs, CICERO Diplomacy AI, and OpenAI o3 / o1 / 🍓 reasoning models
Sam Bowman @sleepinyourhat
50K Followers 3K Following AI alignment + LLMs at Anthropic. On leave from NYU. Views not employers'. No relation to @s8mb. I think you should join @givingwhatwecan.
Koustuv Sinha @koustuvsinha
3K Followers 804 Following Research Scientist @MetaAI; PhD from @mcgillu + @Mila_Quebec; I organize ML Reproducibility Challenge (@repro_challenge). I do research in Multimodal ML
yobibyte @y0b1byte
23K Followers 2K Following ViTaly, yobibyte, senior RS @ NVIDIA, Reinforcement Learning PhD from @UniofOxford, ex RS at Isomorphic Labs, intern @ MSR Cambridge, DeepMind, Facebook, NVIDIA
Daniel Filan @dfrsrchtwts
2K Followers 189 Following Senior research manager at MATS: https://t.co/Dj9HNhMdoJ Want to usher in an era of human-friendly superintelligence, don't know how.
Kevin Weil 🇺🇸 @kevinweil
110K Followers 3K Following CPO @OpenAI, BoD @Cisco @nature_org, LTC @USArmyReserve Prev: President @Planet, Head of Product @Instagram @Twitter ❤️ @elizabeth ultramarathons kids cats math
Eunsol Choi @eunsolc
6K Followers 911 Following on natural language processing / machine learning. assistant prof at @NYUDataScience @NYU_Courant prev @UTCompSci @googleai, @uwcse, @Cornell.
cohere @cohere
108K Followers 4 Following Cohere builds secure, scalable, and private enterprise-grade AI solutions for real-world business problems. Join us: https://t.co/Yb2xItMObl
Gillian Hadfield @ghadfield
5K Followers 761 Following AI policy and alignment; integrating law, economics & computer science to build normatively competent AI that knows how to play well with humans
Been Kim @_beenkim
26K Followers 482 Following Research Scientist at Google DeepMind, PhD from MIT. Make machines empower people.
Mark Carney @MarkJCarney
532K Followers 778 Following Prime Minister of Canada and Leader of the Liberal Party | Premier ministre du Canada et chef du Parti libéral
Yoshua Bengio @Yoshua_Bengio
25K Followers 206 Following Working towards the safe development of AI for the benefit of all @UMontreal, @LawZero_ & @Mila_Quebec A.M. Turing Award Recipient and most-cited AI researcher.
Zaixi Zhang @ZaixiZhang
353 Followers 495 Following Postdoc of Princeton AI Lab. PhD from the University of Science and Technology of China. Previous Visiting PhD at Harvard University.
Ross Matican @rossmatican
1K Followers 5K Following investing in AI safety & security at Halcyon Ventures | Grantee @cosmos_inst | Fmr. @BessemerVP @CartaInc @TheInformation
Nicholas Tomlin @NickATomlin
1K Followers 766 Following Incoming assistant professor at TTIC, current faculty fellow at NYU CDS, and previous PhD student at Berkeley. Natural language processing. He/him.
Daniel Litt @littmath
50K Followers 884 Following Assistant professor (of mathematics) at the University of Toronto. Algebraic geometry, number theory, forever distracted and confused, etc. He/him.
Vinod Khosla @vkhosla
689K Followers 600 Following entrepreneurship zealot, grounded technology possibilist, believer in the power of ideas, passionate about sustainability & impact
Reid Hoffman @reidhoffman
778K Followers 672 Following Co-Founder, LinkedIn. Currently using AI to cure cancer faster @manas_co.
James Morrison Rubin @import_jmr
7K Followers 6K Following Product Lead | Google Gemini Prev: Launched @aws Trainium, @alexa99 Echo Show 5 Tweets are my own. Retweets are not endorsements. Joyful Learning Machines
Jane Castleman @jane_castlem4n
120 Followers 133 Following MSE Student @princetoncs @princetoncitp | Mostly working on better AI evaluations, fairness, & auditing | big fan of @puwrfc
Michiel Bakker @bakkermichiel
2K Followers 822 Following LLMs and AI Safety. Assistant Prof @MIT. Research Scientist @GoogleDeepMind. CS PhD @MIT. He/him.
Vera Liao @QVeraLiao
4K Followers 1K Following Associate Professor @UMichCSE. Previously @MSFTResearc @IBMResearch @IllinoisCS @Tsinghua_Uni.
Zoubin Ghahramani @ZoubinGhahrama1
31K Followers 669 Following VP Research, Google DeepMind, ex-head of Google Brain. Professor at University of Cambridge. Machine Learning Researcher. ex-Chief Scientist & VP of AI, Uber.
Ilan Gur @ilangur
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Nouha Dziri @nouhadziri
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Lucas Beyer (bl16) @giffmana
108K Followers 518 Following Researcher (now: Meta. ex: OpenAI, DeepMind, Brain, RWTH Aachen), Gamer, Hacker, Belgian. Anon feedback: https://t.co/xe2XUqkKit ✗DMs → email
Lucas Caccia @LucasPCaccia
1K Followers 682 Following Sr Researcher @ MSR Montréal. PhD from MILA / McGill
Andy Konwinski @andykonwinski
8K Followers 98 Following Co-founder of @databricks, @perplexity_ai, @laudeinstitute, @laudeventures
Industrial Light & Ma... @ILMVFX
145K Followers 1K Following Founded by George Lucas in 1975, ILM creates iconic moments that inspire the imagination. Light & Magic Season 2 is streaming now on @DisneyPlus.
Sam Park @smsampark
427 Followers 541 Following Postdoc at Stanford CS. Previously: MIT PhD, Cornell BS
Ruiqi Zhong @ZhongRuiqi
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Schwartz Reisman Inst... @TorontoSRI
3K Followers 1K Following Integrative research. Human-centred solutions. We're a @UofT institute working to ensure that powerful technologies make the world better—for everyone.
Zerui Cheng @ZeruiCheng
111 Followers 98 Following Ph.D. candidate @Princeton / AI and Blockchain Research / ICPC Gold Medalist / Yao Class Alumni 23' @Tsinghua_Uni
Jingbo Shang @shangjingbo
448 Followers 85 Following Assoc Prof at UC San Diego CSE & HDSI. Research on weak supervision and LLM. UIUC PhD.
Saining Xie @sainingxie
23K Followers 1K Following researcher in #deeplearning #computervision | assistant prof at @nyu_courant | rs @googledeepmind | past: rs @meta (FAIR) @ucsandiego | ynwa
Alexandr Wang @alexandr_wang
327K Followers 833 Following chief ai officer @meta, founder @scale_ai. rational in the fullness of time
Ethan Caballero is bu... @ethanCaballero
11K Followers 2K Following ML @Mila_Quebec ; previously @GoogleDeepMind
Wenhao Chai @wenhaocha1
2K Followers 2K Following Ph.D. Student @PrincetonCS. Prev @Stanford @UW @pika_labs @MSFTResearch @UofIllinois @ZJU_China. I used to work on computer vision, but it's not all I do.
Stefano Ermon @StefanoErmon
20K Followers 373 Following AI Prof @Stanford | CEO & Cofounder @InceptionAILabs | Co-inventor of DDIM, FlashAttention, DPO, GAIL, and score-based/diffusion models
Simon Shaolei Du @SimonShaoleiDu
9K Followers 2K Following Assistant Professor @uwcse. Postdoc @the_IAS. PhD in machine learning @mldcmu.
Bernhard Schölkopf @bschoelkopf
15K Followers 60 Following
Ananya Kumar @ananyaku
8K Followers 607 Following Researcher working on reasoning at @openai Previously PhD at Stanford University AI Lab with Percy Liang and Tengyu Ma
Sachin Gururangan @ssgrn
6K Followers 251 Following Researcher @AnthropicAI Prev:🦙 @aiatmeta, @allen_ai PhD @uwcse + @uwnlp