Xian Li @xl_nlp
Research Scientist @AIatMeta FAIR. NLP, ML. Opinions are my own. California, USA Joined January 2019-
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We released 44B synthetic tokens from our CoT-guided rewriting, offering higher quality pretraining data than the average human-written web texts📈 🤗Data: huggingface.co/datasets/faceb… 📜Paper: arxiv.org/abs/2506.04689 (accepted at #COLM2025) Excited to see what the community builds!
More and better data for general reasoning beyond math? NaturalThoughts outperforms OpenThoughts3, LIMO, S1k, etc. on GPQA-Diamond, SuperGPQA, and MMLU Pro. Download 1M+ reasoning prompts: huggingface.co/datasets/faceb…
More and better data for general reasoning beyond math? NaturalThoughts outperforms OpenThoughts3, LIMO, S1k, etc. on GPQA-Diamond, SuperGPQA, and MMLU Pro. Download 1M+ reasoning prompts: huggingface.co/datasets/faceb…
Love this project: nanoGPT -> recursive self-improvement benchmark. Good old nanoGPT keeps on giving and surprising :) - First I wrote it as a small little repo to teach people the basics of training GPTs. - Then it became a target and baseline for my port to direct C/CUDA…
Love this project: nanoGPT -> recursive self-improvement benchmark. Good old nanoGPT keeps on giving and surprising :) - First I wrote it as a small little repo to teach people the basics of training GPTs. - Then it became a target and baseline for my port to direct C/CUDA…
🌉 Bridging Offline & Online RL for LLMs 🌉 📝: arxiv.org/abs/2506.21495 New paper shows on verifiable & non-verifiable tasks: - Online DPO & GRPO give similar performance. - Semi-online (iterative) DPO with sync every s steps (more efficient!) works very well also. - Offline DPO…
The future of pretraining is synthetically organic ♻️♻️🌱🌱 We show that grounded synthetic data outperforms high-quality human-written web data such as curated DCLM.
The future of pretraining is synthetically organic ♻️♻️🌱🌱 We show that grounded synthetic data outperforms high-quality human-written web data such as curated DCLM.
Scaling RL is 🔥 what's the fuel? We propose a new paradigm to generate "synthetic environments", unlimited tasks with verifiable rewards for self-improvement. Welcome to the era of experience 🙌
Scaling RL is 🔥 what's the fuel? We propose a new paradigm to generate "synthetic environments", unlimited tasks with verifiable rewards for self-improvement. Welcome to the era of experience 🙌
This is exactly why we need to train the model specifically for human-agent collaborations. Check out a benchmark that we have made for “vibe coding” x.com/yifeizhou02/st…, existing models are still far from perfect and reasoning only seems to overfit more.
This is exactly why we need to train the model specifically for human-agent collaborations. Check out a benchmark that we have made for “vibe coding” x.com/yifeizhou02/st…, existing models are still far from perfect and reasoning only seems to overfit more.
How to improve LLMs for vibe coding? We released a benchmark and an RL algorithm!
How to improve LLMs for vibe coding? We released a benchmark and an RL algorithm!
As reasoning models are getting stronger, we need challenging and diverse questions which can elicit more thinking. Here're 1M+ reasoning questions beyond math and code to accelerate your work, whether you're building open R1 or distilling from strong reasoning models 🚀🚀🚀
As reasoning models are getting stronger, we need challenging and diverse questions which can elicit more thinking. Here're 1M+ reasoning questions beyond math and code to accelerate your work, whether you're building open R1 or distilling from strong reasoning models 🚀🚀🚀
"Pretraining as we know it will end". Enter CoCoMix 🥥🌪️We explored predicting concepts interleaving with next-token prediction, specifically predicting interpretable features from SAE. It demonstrates that steerability can be baked into LLM from the beginning!
"Pretraining as we know it will end". Enter CoCoMix 🥥🌪️We explored predicting concepts interleaving with next-token prediction, specifically predicting interpretable features from SAE. It demonstrates that steerability can be baked into LLM from the beginning!
💭🔎 Introducing EvalPlanner – a method to train a Thinking-LLM-as-a-Judge that learns to generate planning & reasoning CoTs for evaluation. Strong performance on RewardBench, RM-Bench, JudgeBench & FollowBenchEval. Paper 📄: arxiv.org/abs/2501.18099
We replicated the DeepSeek-R1-Zero and DeepSeek-R1 training on 7B model with only 8K examples, the results are surprisingly strong. 🚀 Starting from Qwen2.5-Math-7B (base model), we perform RL on it directly. No SFT, no reward model, just 8K MATH examples for verification, the…
Our Coconut work (learning continuous latent CoT) has opened sourced now. Welcome to play with it: github.com/facebookresear…
New paradigm of reasoning 🥥🥥🥥 brilliant work led by @Ber18791531
New paradigm of reasoning 🥥🥥🥥 brilliant work led by @Ber18791531
Open science is how we continue to push technology forward and today at Meta FAIR we’re sharing eight new AI research artifacts including new models, datasets and code to inspire innovation in the community. More in the video from @jpineau1. This work is another important step…
We are hiring 2025 research interns at FAIR. Topics of interest include LLM reasoning, planning, alignment, synthetic data, efficient architecture and training algorithms, etc. Apply at metacareers.com/jobs/532549086…
Strong models for llm as a judge released from Jason's team and Meta. Really excited to see how far we can bring this capability in open models.
Strong models for llm as a judge released from Jason's team and Meta. Really excited to see how far we can bring this capability in open models.
Releasing model, data, and code for LLM judge!
Releasing model, data, and code for LLM judge!
While o1 is impressive, for math problems that require out-of-box thinking, o1 still does poorly. Surprised to see o1-preview cannot even detect some obvious errors in its logic chain. See below for a few examples. Maybe o1 (from what it shows in o1-preview) assumes "there is…
More diverse yet grounded synthetic data!
More diverse yet grounded synthetic data!
Kyunghyun Cho @kchonyc
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Sam Bowman @sleepinyourhat
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Shruti Rijhwani @shrutirij
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Ofir Press @OfirPress
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Tim Dettmers @Tim_Dettmers
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Siddharth Dalmia @siddalmia05
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Antonis Anastasopoulo... @anas_ant
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Bill Yuchen Lin @billyuchenlin
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Yao Fu @Francis_YAO_
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Yuandong Tian @tydsh
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Edward Grefenstette @egrefen
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Shane Gu @shaneguML
41K Followers 2K Following Gemini Thinking, Senior Staff RS @GoogleDeepMind. 🇯🇵-born 🇨🇳🇨🇦. ex: Gemini Multilinguality Post-Train Lead, GPT-4 @OpenAI (JP: @shanegJP)
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merve @mervenoyann
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Desh Raj @rdesh26
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✧👑 The King of L... @USLumena
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Cashout Performance @Cashout828
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Ananya @ananyaaiml
10 Followers 195 Following love ML research, travelling and cats undergrad stats at UniMelb | 🦋 @ananyaml
shailja Thakur @shailjaThakur3
157 Followers 747 Following Research Scientist @IBMResearch | ex Postdoc @NYUCyber | PhD @UWaterloo
SunLotusBliss @SunLotusBliss
418 Followers 8K Following Yogini| IT Professional| Believer of doing Good Karmas| धर्मो रक्षति रक्षितः|ॐ नमः पार्वती पतये हर हर महादेव| Meditation & Yoga| Sanatan Dharma is a way of Life
Hassan @hassanjisr
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abhi tiwari @abhima786
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degen_bobo 🤖💎 @agostino90
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Swuifku @Swuifku85092
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The fright to troll g... @right2farmbears
1K Followers 6K Following I'm done with Twitter for posting, just for news, until the properly fix the censorship The right to subsistence farming and trading shall not be infringed!
𝐕𝐢𝐭𝐚𝐥�... @VitalyButsan
279 Followers 8K Following I help marketing to look & feel professional ⚛︎ Conservative, Family values first: 🀨 @saprotivlenie
taek holla @Hode2efgc
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neurolicious @neuro__licious
57 Followers 878 Following
Patrick Drake @time8machine
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Jun-En Ding @CYh4lhDXrLDakuk
115 Followers 827 Following Ph.D student at https://t.co/gAqHRrgsYJ |Prev. Research Center for Information| 🏥https://t.co/9KQTpTBxZG | AI for healthcare/Multimodal Learning/Neuroscience.
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992 Followers 2K Following ??, Prev: Gemini @GoogleDeepMind, AI Resident @MetaAI. Creating intelligence.
Chuanyang Jin @chuanyang_jin
456 Followers 382 Following PhD @JohnsHopkins | Intern @AIatMeta FAIR ⏰ Past: @MITCoCoSci & @MIT_CSAIL & @nyuniversity
Hasan Can @HCSolakoglu
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HW_Duan @haowucgc
219 Followers 2K Following Physicist to AI researcher. Building AI assistant for scientific discovery. Interpretability. Connection between ML and renormalization group
Juzheng Zhang @juzheng_z
152 Followers 396 Following PhD student @umdcs @ml_umd. Prev @sjtu1896. Working on #MachineLearning #GenAI #LLMs.
Vaibhavi Singh @__Vaibhavi
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Derek Moore @derekm00r3
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Pengtao Xie @cmuptx
878 Followers 214 Following Associate Professor at UC San Diego. PhD@CMU. Machine Learning https://t.co/w4XyW6rrLl
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Gracelyn @coderlin3
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Antonio J. Dominguez @antferdom
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invi⋆ ˚｡⋆˚ @invi_bhagyesh
469 Followers 3K Following maths+cs • ai research • prev growth @perplexity_ai • OpenSource @AiEleuther • Notion CL • I play dice
BM building AI @BMAIengineer
83 Followers 4K Following University student. Trying to build. Networking. Interests in AI Research,startups,software,CS and emerging technologies.
AK @_akhaliq
425K Followers 3K Following AI research paper tweets, ML @Gradio (acq. by @HuggingFace 🤗) dm for promo ,submit papers here: https://t.co/UzmYN5YmrQ
Yann LeCun @ylecun
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AI at Meta @AIatMeta
712K Followers 288 Following Together with the AI community, we are pushing the boundaries of what’s possible through open science to create a more connected world.
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
Graham Neubig @gneubig
40K Followers 708 Following Associate professor @LTIatCMU. Co-founder/chief scientist @allhands_ai. I mostly work on modeling language.
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
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.
William Wang @WilliamWangNLP
19K Followers 759 Following CEO & Founder, @AlphaDesignAI. We make https://t.co/1LfDYicsF2 I'm also Mellichamp Chair Prof. at UCSB CS. PhD @ CMU SCS.
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.
Yi Tay @YiTayML
46K Followers 81 Following research scientist @googledeepmind ✨♊, model co-lead/captain of gemini deepthink imo gold medal 🥇, opinions are my own.
Lucas Beyer (bl16) @giffmana
108K Followers 519 Following Researcher (now: Meta. ex: OpenAI, DeepMind, Brain, RWTH Aachen), Gamer, Hacker, Belgian. Anon feedback: https://t.co/xe2XUqkKit ✗DMs → email
Mike Lewis @ml_perception
8K Followers 242 Following Llama3 pre-training lead. Partially to blame for things like the Cicero Diplomacy bot, BART, RoBERTa, kNN-LM, top-k sampling & Deal Or No Deal.
Alexis Conneau @alex_conneau
35K Followers 189 Following Co-founder and CEO https://t.co/efv72CKpAG (@WaveFormsAI) - Ex @OpenAI GPT-4o/AVM Audio Research Lead - #Her #TARS - Ex @AIatMeta, @Polytechnique (X11)
Google DeepMind @GoogleDeepMind
1.2M Followers 279 Following We’re a team of scientists, engineers, ethicists and more, committed to solving intelligence, to advance science and benefit humanity.
Sebastian Ruder @ ACL @seb_ruder
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2K Followers 961 Following Scaling supervision for AI on evals that matter. RS Intern @AIatMeta PhDing @ELLISInst_Tue @MPI_IS
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Hu Xu @Hu_Hsu
724 Followers 667 Following FAIR, Foundational Data Research, #MetaCLIP (scaling CLIP data from scratch) for DINO, Llama, JEPA, PE, Movie Gen etc. @aiatmeta
Shuchao Bi @shuchaobi
13K Followers 689 Following Research @Meta Superintelligence Labs, RL/post-training/agents; Previously Research @OpenAI on multimodal and RL; Opinions are my own.
Kevin Lu @_kevinlu
9K Followers 216 Following @thinkymachines. formerly: - @openai: RL, synthetic data, efficient models - @berkeley_ai: decision transformer, universal computation
Bo Liu (Benjamin Liu) @Benjamin_eecs
600 Followers 375 Following RL PhD @NUSingapore | Intern @AIatMeta FAIR | Undergrad @PKU1898 | Building autonomous decision making system | Prev @deepseek_ai | DeepSeek-V2/VL/Prover SPIRAL
Despoina Magka @MarlaMagka
596 Followers 592 Following Software engineer at Meta London, @MetaAI. PhD Artificial Intelligence, Oxford. Tweets in English, Greek, French, German, Spanish. From Athens.
Alexander Holden Mill... @alex_h_miller
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Rohan Pandey @khoomeik
38K Followers 2K Following descending cross-entropy to ascend entropy || prev research @OpenAI @CarnegieMellon '23
❄️Andrew Zhao❄�... @_AndrewZhao
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Drew Bent @drew_bent
4K Followers 430 Following education & ai @AnthropicAI / founded https://t.co/HWk70oiDVe with @salkhanacademy / @mit @stanford
Zeyuan Allen-Zhu, Sc.... @ZeyuanAllenZhu
20K Followers 452 Following physics of language models @ Meta (FAIR, not GenAI) 🎓：Tsinghua Physics — MIT CSAIL — Princeton/IAS 🏅：IOI x 2 — ACM-ICPC — USACO — Codejam — math MCM
马东锡 NLP @dongxi_nlp
14K Followers 762 Following Prev. PhD @Stockholm_Uni | Alumni @KTHuniversity @uppsalauni Sharing insights on AI, autonomous agents, and large language & reasoning models
Paria Rashidinejad @paria_rd
168 Followers 296 Following Assistant Professor @USC ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ Research Scientist @AIatMeta FAIR, GenAI⠀ ⠀ ⠀⠀ ⠀ ⠀ PhD @berkeley_ai @CHAI_Berkeley
Prime Intellect @PrimeIntellect
45K Followers 26 Following find compute. train models. contribute to open superintelligence. https://t.co/ZRZOsRRbwr
Ashish Vaswani @ashVaswani
25K Followers 2K Following
Yanda Chen @yanda_chen_
3K Followers 607 Following Member of Technical Staff @AnthropicAI | PhD @ColumbiaCompSci | NLP & ML | Prev Intern @MSFTResearch, @AmazonScience
Aleksandra Faust @AleksandraFaust
3K Followers 538 Following Chief AI Officer @genesistxai. Previously, Research Scientist @GoogleDeepMind, @GoogleAI in #GoogleBrain, @Waymo, @SandiaLabs, @UNM, @UIUC.
Jon Lai @Tocelot
41K Followers 2K Following GP @a16z @speedrun 🌱 | former PM @RiotGames @TencentGames | dark souls fan & dad to 3 zerglings
fly51fly @fly51fly
8K Followers 2K Following BUPT prof | Sharing latest AI papers & insights | Join me in embracing the AI revolution! #MachineLearning #AI #Innovation
Yifei Zhou @YifeiZhou02
2K Followers 541 Following @xai | PhD student @berkeley_ai (on leave), working on RL for LLM agents, prev @AIatMeta, Opinions my own
Artidoro Pagnoni @ArtidoroPagnoni
1K Followers 603 Following PhD @uwnlp @AIatMeta. Bending the scaling laws.
Brandon Trabucco @brandontrabucco
1K Followers 354 Following Exploring new data @thinkymachines; @MLDCMU (PhD); @Berkeley_AI (Bachelors); @NDSEG Fellow; Singer and Composer
Bill Yuchen Lin @billyuchenlin
23K Followers 3K Following Building Grok @xAI. Affiliate Assistant Prof @UW; Focusing on Grok Code for Macrohard now. Ex: @allen_ai, Google AI, Meta FAIR.
Quanquan Gu @QuanquanGu
16K Followers 2K Following Professor @UCLA, Pretraining and Scaling at ByteDance Seed | Recent work: Build AGI | Opinions are my own
Jihoon Tack @jihoontack
714 Followers 675 Following Incoming Senior Researcher at @MSFTResearch | PhD @kaist_ai | Google PhD Fellow | Prev: Visiting @oxcsml, Research Intern at FAIR @AIatMeta
Andrew Cohen @andrew_e_cohen
216 Followers 555 Following Reinforcement learning @AIatMeta | Previously #mlagents
Xiang Yue @xiangyue96
5K Followers 828 Following Postdoc @LTIatCMU. PhD from Ohio State @osunlp. Author of MMMU, MAmmoTH. Training & evaluating foundation models. Opinions are my own.
The AI Timeline @TheAITimeline
24K Followers 1 Following covering the latest AI & LLM research /// see "highlights" for all previous weekly threads /// building the best AI paper search engine @findmypapersai
Flood Sung @RotekSong
2K Followers 1K Following Member of Technical Staff at https://t.co/Er8FUEfKWM Building ASI!
Machine Learning Stre... @MLStreetTalk
35K Followers 628 Following MLST is by Dr. Tim Scarfe @ecsquendor w/ cameos from @DoctorDuggar https://t.co/5YCv2SdFwN (early access/priv.discord) - Sponsor us!
Michael Levin @drmichaellevin
63K Followers 3K Following Scientist at Tufts University; my lab studies anatomical and behavioral decision-making at multiple scales of biological, artificial, and hybrid systems.
Aleksa Gordić (水�... @gordic_aleksa
25K Followers 233 Following getting us to singularity with friends x @GoogleDeepMind @Microsoft tensor core maximalist
Shibo Hao @Ber18791531
2K Followers 1K Following Ph.D. student @UCSanDiego Previous Research Scientist Intern @AIatMeta. B.S. in Computer Science @PKU1898 Coconut, Reasoning-via-planning, ToolkenGPT
Nenad Tomasev @weballergy
6K Followers 1K Following Senior staff research scientist at DeepMind. Opinions are my own. Re-tweets and favorites not to be considered as endorsements.
METR @METR_Evals
11K Followers 29 Following An AI research non-profit advancing the science of empirically testing AI systems for capabilities that could threaten catastrophic harm to society.
Avi Singh @avisingh599
2K Followers 1K Following Gemini @GoogleDeepMind. Previously worked on robots. Ask for my strava and goodreads :)
Zhihong Shao @zhs05232838
9K Followers 769 Following Researcher @deepseek_ai | Ph.D. @TsinghuaCoAI | Ex. @MSFTResearch | Recent: DeepSeek-R1, DeepSeek-Coder-v2, DeepSeekMath, DeepSeek-Prover, Math-Shepherd, ToRA.
Jiaxin Wen @jiaxinwen22
4K Followers 271 Following CS PhD student @UCBerkeley. Part-time @AnthropicAI. Part-time eater. Prev @Tsinghua_Uni. Try to understand and control intelligence as a human.
cool ai and ml papers @aimodelsfyi
860 Followers 23 Following Scanning repos, journals, and social media to bring you bite-size reviews of AI research
Yoram Bachrach @yorambac
3K Followers 7K Following Research Scientist at Meta (prev Google DeepMind and Microsoft Research). Working on LLM Agents and Multi-Agent Systems.Trends for United States
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