Doug Downey @_DougDowney
Researching AI for Science @allen_ai, Prof @northwesterncs Joined May 2020-
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As part of Asta, our initiative to accelerate science with trustworthy AI agents, we built AstaBench—the first comprehensive benchmark to compare them. ⚖️
Introducing Asta—our bold initiative to accelerate science with trustworthy, capable agents, benchmarks, & developer resources that bring clarity to the landscape of scientific AI + agents. 🧵
🚀 In March, we launched Paper Finder, an LLM-powered literature search agent that surfaces papers other tools miss. Now, we’re releasing an open-source snapshot to enable others to inspect & build on it—and reproduce the results. 🧵
🚨 SciArena update + evaluation of new models including GPT-5! 🚨 With thousands of new votes, new LLMs are reshaping our leaderboard for scientific literature tasks. o3 still leads—but GPT-5, Claude Opus 4.1, & more are closing the gap.
Are you a researcher in CS or a CS-adjacent field who could use help in refining your research ideas? Want to try our new AI-powered tool that helps with just that in a paid user study? Details and sign up here! forms.gle/UPFjyJ59uuZ5Zb…
Great science starts with great questions. 🤔✨ Meet AutoDS—an AI that doesn’t just hunt for answers, it decides which questions are worth asking. 🧵
We’ve upgraded ScholarQA, our agent that helps researchers conduct literature reviews efficiently by providing detailed answers. Now, when ScholarQA cites a source, it won’t just tell you which paper it came from–you’ll see the exact quote, highlighted in the original PDF. 🧵
This was a fun collaboration led by @YilunZhao_NLP and @kaiyan_z from @armancohan's lab at Yale University. Annotators preferred o3 in our study, which was found to give more detailed and technical answers. Curious to see if community voting changes the picture!
This was a fun collaboration led by @YilunZhao_NLP and @kaiyan_z from @armancohan's lab at Yale University. Annotators preferred o3 in our study, which was found to give more detailed and technical answers. Curious to see if community voting changes the picture!
Introducing SciArena, a platform for benchmarking models across scientific literature tasks. Inspired by Chatbot Arena, SciArena applies a crowdsourced LLM evaluation approach to the scientific domain. 🧵
@allen_ai @SemanticScholar is hiring an #ml #nlp #ai reasoning researcher for a Research Scientist, Agents for Science position with target start dates in 2025. Excited about developing AI systems with deep reasoning capabilities for science? Send an application our way!
Ever wonder how LLM developers choose their pretraining data? It’s not guesswork— all AI labs create small-scale models as experiments, but the models and their data are rarely shared. DataDecide opens up the process: 1,050 models, 30k checkpoints, 25 datasets & 10 benchmarks 🧵
For years it’s been an open question — how much is a language model learning and synthesizing information, and how much is it just memorizing and reciting? Introducing OLMoTrace, a new feature in the Ai2 Playground that begins to shed some light. 🔦
Imagine AI doing science: reading papers, generating ideas, designing and running experiments, analyzing results… How many more discoveries can we reveal? 🧐 Meet CodeScientist, a promising next step toward autonomous scientific discovery. 🧵
Meet Ai2 Paper Finder, an LLM-powered literature search system. Searching for relevant work is a multi-step process that requires iteration. Paper Finder mimics this workflow — and helps researchers find more papers than ever 🔍
Announcing OLMo 2 32B: the first fully open model to beat GPT 3.5 & GPT-4o mini on a suite of popular, multi-skill benchmarks. Comparable to best open-weight models, but a fraction of training compute. When you have a good recipe, ✨ magical things happen when you scale it up!
We’re excited to share some updates to Ai2 ScholarQA: 🗂️ You can now sign in via Google to save your query history across devices and browsers. 📚 We added 108M+ paper abstracts to our corpus - expect to get even better responses! ✨ The backbone model has been updated to the…
Introducing olmOCR, our open-source tool to extract clean plain text from PDFs! Built for scale, olmOCR handles many document types with high throughput. Run it on your own GPU for free—at over 3000 token/s, equivalent to $190 per million pages, or 1/32 the cost of GPT-4o!

Luca Soldaini 🎀 @soldni
11K Followers 1K Following I like tokens! I lead the OLMo data team at @allen_ai w/ @kylelostat. Open source is fun 🤖☕️🍕🏳️🌈 Opinions are sampled from my own stochastic parrot
Akari Asai @AkariAsai
19K Followers 870 Following Incoming Assistant Professor @SCSatCMU & research scientist @allen_ai. akariasai @ 🦋
Ai2 @allen_ai
74K Followers 410 Following Breakthrough AI to solve the world's biggest problems. › Join us: https://t.co/MjUpZpKPXJ › Newsletter: https://t.co/k9gGznstwj
Lucy Li @lucy3_li
5K Followers 2K Following Postdoc @uwnlp. Incoming assistant prof @WisconsinCS. Prev @UCBerkeley, @allen_ai, @MSFTResearch, @stanfordnlp. More silly at https://t.co/rtSSUhWQnL.
Oren Etzioni @etzioni
27K Followers 2K Following Co-founder, https://t.co/XLQqMYVHzw. Founder, https://t.co/PYY4TlNbH4. Founding CEO, AIlen Institute for AI. Founder, https://t.co/IQ6xAlnKcR. Professor Emeritus, UW
Kyle Lo @kylelostat
3K Followers 1K Following #nlproc #hci research scientist @allen_ai, co-lead of data for OLMo w/ @soldni, he/him, find me on 👉🏻https://t.co/5Hm9cx3Urz🧋
Shaily @shaily99
7K Followers 2K Following PhD @LTIatCMU. Prev: @allen_ai @GoogleAI @MSFTResearch. #NLProc. Often ranting about research.
Yizhong Wang @yizhongwyz
6K Followers 2K Following Incoming assistant professor @UTCompSci, RS @BytedanceTalk, PhD from @uwcse, formerly @allen_ai @AIatMeta @MSFTResearch
Ana Marasović @anmarasovic
5K Followers 597 Following Asst prof @UUtah · Ex @allen_ai @uwnlp postdoc @HD_NLP PhD · she/her 🇭🇷
Matthew Finlayson @mattf1n
1K Followers 904 Following PhD at @nlp_usc | Former predoc at @allen_ai on @ai2_aristo | Harvard 2021 CS & Linguistics
Semantic Scholar @SemanticScholar
12K Followers 2K Following A free, AI-driven research tool for scientific literature with more than 200 million papers across all fields of study. Proudly built by Ai2 @allen_ai.
Hang Jiang @hjian42
2K Followers 2K Following Postdoc @MITIBMLab | PhD from @MIT | LLMs + NLP + HAI + CSS | Building AI for a healthy, informed, and connected society. Opinions are my own.
Sameer Singh @sameer_
7K Followers 2K Following Cofounder/CTO @SpiffyAI and Prof at @UCIrvine, working on reliable LLMs, explanations for AI+ML, adversaries for NLP, and debugging/evaluation.
Shannon Shen @shannonzshen
1K Followers 2K Following PhD Student @MIT_CSAIL | previously @allen_ai @semanticscholar @harvard @brownuniversity
John Giorgi @johnmgiorgi
325 Followers 331 Following ML research scientist @abridgehq. CS PhD from @UofT. Previous intern @allen_ai.
William Wang @WilliamWangNLP
19K Followers 762 Following CEO & Founder, @AlphaDesignAI. We make https://t.co/1LfDYicsF2 I'm also Mellichamp Chair Prof. at UCSB CS. PhD @ CMU SCS.
Daniel Weld @dsweld
3K Followers 271 Following Computer science prof, entrepreneur & leader at Ai2. Excited by AI for science, human-AI interaction, and Web-scale NLP.
Logesh Krishnamurthy @LogeshKris18470
217 Followers 5K Following
RicLuonaerduo @RLuonaerdu46707
86 Followers 2K Following
Valentina Pyatkin @valentina__py
3K Followers 1K Following Postdoc at the Allen Institute for AI @allen_ai and @uwnlp
Nelson Liu @nelsonfliu
4K Followers 844 Following @stanfordnlp PhD student. tweets auto-deleted periodically.
Li S. Yifei @realliyifei
176 Followers 559 Following PhD Student @upennnlp | Large Language Model, Multimodal
Alan Li @alanli2020
112 Followers 280 Following PhD @YaleNLP | undergrad @UWcse @nlpnoah | interned at @kotoba_tech
Hana Ava @TAnasxoach
738 Followers 2K Following A romantic at heart who loves cozy nights, meaningful talks, and laughter that fills the room. I find joy in creativity, nature, and the beauty of simple living
Saber Darabi @SADarabi
308 Followers 8K Following
Greg Durrett @gregd_nlp
8K Followers 892 Following Associate professor at NYU (Courant CS + Center for Data Science) | advisor for @bespokelabsai | large language models and NLP | he/him
Ramiro Gálvez @RamiroHGalvez
649 Followers 915 Following Assistant Professor at Universidad Torcuato Di Tella
Pg @PGLysk
0 Followers 49 Following
Ram @raman_4334
15 Followers 876 Following
Jay Jain @JayLjain
161 Followers 2K Following Software Engineer,Data Scientist, and a full time learner. If we combine cunningness of wolf and vision of eagle we get wolf of a wall street. #python #software
Nishant Balepur @NishantBalepur
766 Followers 508 Following Intern @allen_ai, visitor @nyuniversity, and PhD-esperate @UofMaryland. Aligning and evaluating more helpful #LLMs. Prev @adobe @UofIllinois
Hita K @_hitakam
73 Followers 66 Following PhD student @cis_penn | @NSF Graduate Research Fellow | @carnegiemellon alum human-AI interaction for information reasoning tasks
Querrey Simpson Insti... @NU_QSIB
614 Followers 1K Following Querrey Simpson Institute for Bioelectronics (QSIB) @NorthwesternU led by @ProfJohnARogers | Flexible thinking. Expansive ideas. | Bioelectronics Research
Clayton Thorrez @cthorrez
1K Followers 2K Following Rating systems and paired comparison experimentation enjoyer @lmarena_ai Previous: ML @umich @umass @microsoft @apple
Kaiyan Zhang @kaiyan_z
9 Followers 19 Following
Bodhisattwa Majumder @mbodhisattwa
2K Followers 828 Following I lead AI x (Data-driven) Discovery @allen_ai. 🧬 Agents + Search. @AdobeResearch Fellow. Prev Google, MSR, Meta. PhD @ucsd_cse.
Daniel Khashabi 🕊�... @DanielKhashabi
3K Followers 918 Following I play with intuitions and data. Now: @jhuclsp @jhucompsci Past: @allen_ai @uwnlp @Penn @cogcomp, @Illinois_Alma, @MSFTResearch He/Him
Majeed Kazemitabaar @MajeedKazemi
1K Followers 364 Following Incoming Assistant prof in CS @UAlberta + @Amiithinks | Researching the future of learning to code with AI | Currently PhD @UofT | Prev @UMD & @MSFTResearch
Eva Louise Marie Gabr... @e681554349
11 Followers 7K Following
L @CodeTitanium
103 Followers 5K Following
I07XNbUI4 @DeepFeed2
85 Followers 6K Following
Taishi Nakamura @Setuna7777_2
2K Followers 6K Following Working on scalable and efficient LLM (MoE pretraining, RL, reasoning). CS MS at @sciencetokyo_en Intern @SakanaAILabs
Jeffrey Lopez @jeff_lopez12
724 Followers 625 Following Asst Professor of Chemical and Biological Engineering @NorthwesternEng. Energy storage, polymers, automated experimentation.
Letha Joweth @LethaJoweth
3K Followers 5K Following Mother, Self Employed. Wellness, Working to build a legacy with multiple sources of income.
dragonAI @AIMLforEdu
233 Followers 3K Following 📘 AI/ML Researcher and Educator | 👨💻 Exploring how AI transforms teaching & learning | 🔁 Sharing insights on education, intelligence & code
KnowledgeNLP Workshop... @knowledgenlp
258 Followers 35 Following Official account of Knowledge Augmented Methods for NLP, a series workshops and tutorials in AI and NLP conferences. Follow us on latest updates!
无名 @ohzhu1
26 Followers 8K Following
David Chiang @davidweichiang
2K Followers 571 Following Associate Professor of Computer Science and Engineering at University of Notre Dame. Natural language processing, formal grammars, machine learning
Ian Magnusson @IanMagnusson
449 Followers 445 Following Science of language models @uwnlp and @allen_ai with @PangWeiKoh and @nlpnoah.
babahooey @grda
263 Followers 4K Following
sourabh @sourabhkapure
339 Followers 7K Following
Alex @Alex233215
555 Followers 8K Following
Luca Soldaini 🎀 @soldni
11K Followers 1K Following I like tokens! I lead the OLMo data team at @allen_ai w/ @kylelostat. Open source is fun 🤖☕️🍕🏳️🌈 Opinions are sampled from my own stochastic parrot
(((ل()(ل() 'yoav)))... @yoavgo
66K Followers 2K Following
Akari Asai @AkariAsai
19K Followers 870 Following Incoming Assistant Professor @SCSatCMU & research scientist @allen_ai. akariasai @ 🦋
Ai2 @allen_ai
74K Followers 410 Following Breakthrough AI to solve the world's biggest problems. › Join us: https://t.co/MjUpZpKPXJ › Newsletter: https://t.co/k9gGznstwj
Christopher Manning @chrmanning
152K Followers 229 Following Founder, @stanfordnlp and cs224n. Assoc. Director, @StanfordHAI. Prof. CS & Linguistics, @Stanford. GP @aixventureshq. Australian🇦🇺. Do #NLProc & #AI. 👋
Lucy Li @lucy3_li
5K Followers 2K Following Postdoc @uwnlp. Incoming assistant prof @WisconsinCS. Prev @UCBerkeley, @allen_ai, @MSFTResearch, @stanfordnlp. More silly at https://t.co/rtSSUhWQnL.
Kyunghyun Cho @kchonyc
78K Followers 2K Following a combination of a mediocre scientist, a mediocre manager, a mediocre advisor & a mediocre physicist at @nyuniversity (@CILVRatNYU) & @PrescientDesign
Oren Etzioni @etzioni
27K Followers 2K Following Co-founder, https://t.co/XLQqMYVHzw. Founder, https://t.co/PYY4TlNbH4. Founding CEO, AIlen Institute for AI. Founder, https://t.co/IQ6xAlnKcR. Professor Emeritus, UW
Yoav Artzi @yoavartzi
17K Followers 182 Following Research/prof @cs_cornell + @cornell_tech🚡 / https://t.co/9YnWry7yHs / asso. faculty director @arxiv / building https://t.co/nwrbEuwfaK and @COLM_conf
Kyle Lo @kylelostat
3K Followers 1K Following #nlproc #hci research scientist @allen_ai, co-lead of data for OLMo w/ @soldni, he/him, find me on 👉🏻https://t.co/5Hm9cx3Urz🧋
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.
Sebastian Ruder @seb_ruder
93K Followers 1K Following Research Scientist @AIatMeta • Ex @Cohere @GoogleDeepMind
Christopher Potts @ChrisGPotts
14K Followers 648 Following Stanford Professor of Linguistics and, by courtesy, of Computer Science. Member of technical staff @stanfordnlp and @StanfordAILab. Co-founder @ Bigspin AI.
Shaily @shaily99
7K Followers 2K Following PhD @LTIatCMU. Prev: @allen_ai @GoogleAI @MSFTResearch. #NLProc. Often ranting about research.
Yizhong Wang @yizhongwyz
6K Followers 2K Following Incoming assistant professor @UTCompSci, RS @BytedanceTalk, PhD from @uwcse, formerly @allen_ai @AIatMeta @MSFTResearch
Sarah Wiegreffe @sarahwiegreffe
5K Followers 1K Following Research in NLP (mostly LM interpretability & explainability). Assistant prof @umdcs @clipumd Formerly @allen_ai @uwnlp @icatgt @gtcomputing Views my own.
Ana Marasović @anmarasovic
5K Followers 597 Following Asst prof @UUtah · Ex @allen_ai @uwnlp postdoc @HD_NLP PhD · she/her 🇭🇷
Scott Yih @scottyih
2K Followers 842 Following Research Scientist at Meta Fundamental AI Research (FAIR)
Aran Komatsuzaki @arankomatsuzaki
146K Followers 306 Following Looking for a cofounder. Sharing AI research. Early work on AI (GPT-J, LAION, scaling, MoE). Ex ML PhD (GT) & Google.
Robert Scoble @Scobleizer
543K Followers 24K Following The best from ML/AI community | Ex-Microsoft, Rackspace, Fast Company | Wrote eight books about the future | Silicon Valley robots, holodecks, BCIs, & startups.
Ethan (Yusheng) Su @thu_yushengsu
700 Followers 1K Following Researcher @AMD | Postdoc @ https://t.co/eNDjysZ4dD | Ph.D @TsinghuaNLP | Intern @Microsoft.
Allen School @uwcse
11K Followers 3K Following The Paul G. Allen School of Computer Science & Engineering educates tomorrow's innovators while developing solutions to humanity's greatest challenges.
Tal Linzen @tallinzen
18K Followers 899 Following Professor @nyuling and @NYUDataScience, research scientist @GoogleAI, inventor of the word "bertology"
Jesús Fernández-Vil... @JesusFerna7026
28K Followers 75 Following Howard Marks Presidential Professor of Economics at the University of Pennsylvania and John H. Makin Visiting Scholar at the AEI. All opinions are my own.
Valentina Pyatkin @valentina__py
3K Followers 1K Following Postdoc at the Allen Institute for AI @allen_ai and @uwnlp
Li S. Yifei @realliyifei
176 Followers 559 Following PhD Student @upennnlp | Large Language Model, Multimodal
François Chollet @fchollet
576K Followers 818 Following Co-founder @ndea. Co-founder @arcprize. Creator of Keras and ARC-AGI. Author of 'Deep Learning with Python'.
Chelsea Finn @chelseabfinn
83K Followers 399 Following Asst Prof of CS & EE @Stanford Co-founder of Physical Intelligence @physical_int PhD from @Berkeley_EECS, EECS BS from @MIT
Fei-Fei Li @drfeifei
526K Followers 1K Following Prof (CS @Stanford), Co-Director @StanfordHAI, Cofounder/CEO @theworldlabs, #AI #SpatialIntelligence #GenAI #computervision #robotics #AI-healthcare
Miles Brundage @Miles_Brundage
62K 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
cristina muntean @CriMuntean
215 Followers 564 Following
Nelson Liu @nelsonfliu
4K Followers 844 Following @stanfordnlp PhD student. tweets auto-deleted periodically.
Tim Dettmers @Tim_Dettmers
39K Followers 993 Following Creator of bitsandbytes.Research Scientist @allen_ai and incoming professor @CarnegieMellon. I blog about deep learning and PhD life at https://t.co/Y78KDJJFE7.
Percy Liang @percyliang
85K Followers 420 Following Associate Professor in computer science @Stanford @StanfordHAI @StanfordCRFM @StanfordAILab @stanfordnlp | cofounder @togethercompute | Pianist
Rowan Zellers @rown
14K Followers 974 Following multimodal @thinkymachines. I also like to climb rocks and throw pottery. https://t.co/5Er4j39K71 (he/him)
Danqi Chen @danqi_chen
17K Followers 789 Following Associate professor @princetonPLI @PrincetonCS. Previously: @facebookai, @stanfordnlp, @Tsinghua_Uni https://t.co/hLXgShMIPE
Tri Dao @tri_dao
33K Followers 632 Following Asst. Prof @PrincetonCS, Chief Scientist @togethercompute. Machine learning & systems.
Sangho Suh @sangho_suh
994 Followers 612 Following Research Scientist @allen_ai | Prev: @UofT @DesignLabUCSD @UWaterloo | https://t.co/o2B2DtgEIC
Been Kim @_beenkim
26K Followers 487 Following Research Scientist at Google DeepMind, PhD from MIT. Make machines empower people.
Alan Li @alanli2020
112 Followers 280 Following PhD @YaleNLP | undergrad @UWcse @nlpnoah | interned at @kotoba_tech
Jason Weston @jaseweston
13K Followers 725 Following @Meta+NYU. NLP from scratch(Pretrain+FT LLM) 2008,MemNet (pre-Transformer) 2015, DrQA(pre-RAG) 2017, BlenderBot(dialog pre-ChatGPT) 2018+, Self-Rewarding+more!
Nishant Balepur @NishantBalepur
766 Followers 508 Following Intern @allen_ai, visitor @nyuniversity, and PhD-esperate @UofMaryland. Aligning and evaluating more helpful #LLMs. Prev @adobe @UofIllinois
Hita K @_hitakam
73 Followers 66 Following PhD student @cis_penn | @NSF Graduate Research Fellow | @carnegiemellon alum human-AI interaction for information reasoning tasks
Kyle Wiggers @Kyle_L_Wiggers
67K Followers 6K Following Ai2 Comms Lead | [email protected] | Pronouns: he/him
Uma Gunturi @gunturiuma1
353 Followers 2K Following she/her, MLE @IBM Watsonx, affiliated to @IBMResearch, grad @virginia_tech, previously @midasIIITD, @gtcomputing • NLP • HCI Researcher • Opinions are my own!
Toby J. Li😺 (he/hi... @TobyJLi
4K Followers 1K Following Assistant Professor @ND_CSE. Working on HCI+AI for automation to address societal challenges on the future of work. Formerly @cmuhcii and @grouplens.
Daniel Khashabi 🕊�... @DanielKhashabi
3K Followers 918 Following I play with intuitions and data. Now: @jhuclsp @jhucompsci Past: @allen_ai @uwnlp @Penn @cogcomp, @Illinois_Alma, @MSFTResearch He/Him
Majeed Kazemitabaar @MajeedKazemi
1K Followers 364 Following Incoming Assistant prof in CS @UAlberta + @Amiithinks | Researching the future of learning to code with AI | Currently PhD @UofT | Prev @UMD & @MSFTResearch
Neha Srikanth @nehasrikanth
497 Followers 665 Following CS PhD student @umdcs @ClipUmd || natural language processing || prev @lyft, @UTCompSci
hazyresearch @HazyResearch
9K Followers 1K Following A research group in @StanfordAILab working on the foundations of machine learning & systems. https://t.co/JHK58TDorG Ostensibly supervised by Chris Ré
Stefano Ermon @StefanoErmon
20K Followers 374 Following AI Prof @Stanford | CEO & Cofounder @InceptionAILabs | Co-inventor of DDIM, FlashAttention, DPO, GAIL, and score-based/diffusion models
Alex Ratner @ajratner
6K Followers 629 Following @SnorkelAI @uwcse / prev @StanfordAILab – Interested in data management systems for machine learning, weak supervision, and impactful applications.
Omar Khattab @lateinteraction
25K Followers 3K Following Asst professor @MIT EECS & CSAIL (@nlp_mit). Author of https://t.co/VgyLxl0oa1 and https://t.co/ZZaSzaRaZ7 (@DSPyOSS). Prev: CS PhD @StanfordNLP. Research @Databricks.