Ajit Singh @apsinghcdn
Principal Engineer at Rippling linktr.ee/apsingh San Francisco, CA Joined August 2011-
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what changed is that evals are now RL training data
I’m stoked to share our new paper: “Harnessing the Universal Geometry of Embeddings” with @jxmnop, Collin Zhang, and @shmatikov. We present the first method to translate text embeddings across different spaces without any paired data or encoders. Here's why we're excited: 🧵👇🏾
It's deeply concerning that one of the best AI researchers I've worked with, @kaicathyc, was denied a U.S. green card today. A Canadian who's lived and contributed here for 12 years now has to leave. We’re risking America’s AI leadership when we turn away talent like this.
Starting salaries at Cambridge are less than $70k for most fields. Stanford? Double that. As someone trying to hire the best global talent to work on UK and EU projects, I can't compete with the American universities. One election won't change that.
Starting salaries at Cambridge are less than $70k for most fields. Stanford? Double that. As someone trying to hire the best global talent to work on UK and EU projects, I can't compete with the American universities. One election won't change that.
a reason why it’s painful for academics to be on X is the default academic epistemic humility mode we like to talk and write in does not work on this platform where shitpoasters speak/write as if they dug up a tablet and god spoke to them about everything.
We should call models like Llama 3, Mixtral, etc. “open-weight models”, not “open-source models”. For a model to be open-source, the code and training data need to be public (good examples: GPT-J, OLMo, RedPajama, StarCoder, K2, etc.). Weights are like an exe file, which would be…
That AAAI felt compelled to put an upper bound on the number of papers (ten!) from an author should tell you something about the state of AI publishing today.
This would essentially make it illegal for a foreigner to do a postdoc in the UK.
This would essentially make it illegal for a foreigner to do a postdoc in the UK.
We remain committed to our partnership with OpenAI and have confidence in our product roadmap, our ability to continue to innovate with everything we announced at Microsoft Ignite, and in continuing to support our customers and partners. We look forward to getting to know Emmett…
Launching today: AI-powered candidate feedback summaries in Rippling Recruiting 🚀 This new feature auto-synthesizes interview feedback into a digestible, helpful snapshot of each job candidate. Stay tuned—more AI-driven features are coming soon🛠️ rippling.com/blog/bringing-…
We investigate what features of tabular data explain the difference, for this, we modify tabular data to narrow the gap. Smoothing the outcome in feature space narrows the gap: deep architectures struggle with irregular patterns. Tree models do not care about smoothness 6/9
What are the latest research trends in AI? Explore all NeurIPS submissions from 1987 to 2022 in Atlas. atlas.nomic.ai/map/neurips
A lot has been speculated about TikTok's recommendations. This is the first paper I've read by the team, and it has many interesting details: expirable embeddings, parameter server, online training... Good #recsys stuff arxiv.org/abs/2209.07663
If you don’t think @metaai is not going to do something amazing with all those GPUs, think twice.
What I learned over the years is that people outside of the machine learning research community are so much better at UI/UX, design, web-dev, creating apps and plugins for all sorts of platforms, and making ML actually useful to a large number of real users.
What I learned over the years is that people outside of the machine learning research community are so much better at UI/UX, design, web-dev, creating apps and plugins for all sorts of platforms, and making ML actually useful to a large number of real users.
📢Announcement📢: After careful consideration, we have decided to host AISTATS 2023 in Valencia (Spain), rather than a location in the US. Valencia was the original planned location for the 2022 conference, which had to be moved online. See you in Valencia!
Neural rendering takes its next step with DLSS 3.0 on Ada! In addition to DL-powered superresolution, it uses optical flow, motion vectors, and DL to generate entire frames. 7 out of 8 pixels being rendered with DLSS3 come from Neural rendering. #GTC22
I made an accessibility map of #Neurips2022. The country is marked in red if its resident can not get appointment in time from getting accepted to the conference (76 days).
This seems worthy of a first tweet! BB3 is the first 175B param, publicly available chatbot, with model weights, code, datasets, model cards, and focus on safety & explainability. See the Meta AI blog for more ai.facebook.com/blog/blenderbo…. And try out the demo blenderbot.ai
Claude Shannon is the founder of Information Theory His essay on creative thinking is criminally underrated I've unpacked 2 of Shannon's ideas below THREAD...

Leo Boytsov @srchvrs
9K Followers 2K Following Machine learning scientist and engineer speaking πtorch & C++. Past @LTIatCMU, @awscloud. Opinions sampled from MY OWN 100T param LM.
Rosemary @rosemary64davis
355 Followers 3K Following
Carmen @Giredi1504
49 Followers 2K Following The most alluring thing a woman can have is confidence.
LeeLouise @19D2KXxvpm0P7
1 Followers 1K Following
PrudenceJessie @ClXdkl3F448uhU
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Isobel @Eefawcie26036
36 Followers 2K Following Beauty begins the moment you decide to be yourself. — Coco Chanel
Daphne @daphne_smith8
253 Followers 3K Following
PageHodgson @BEou7g2pW2u86Z
1 Followers 250 Following
MiriamLyly @gYX4raBCbCI0Q
83 Followers 4K Following
Gotcalr @Gotcalr577641
22 Followers 2K Following
Etohal @Etohal4351271
23 Followers 1K Following
Youngseog Chung @YoungseogC
470 Followers 625 Following PhD student at @mldcmu, @AutonLab | Jazz enthusiast | Tennis player
Liz Ann Sonder. @LizzAnnSonderz
365 Followers 5K Following Chief Investment Strategist, Charles Schwab & Co., Inc. Disclosures: https://t.co/gcpDu1GVis
Aubiqu @Aubiqu1517
29 Followers 2K Following
DeltaDivergence🇺�... @Ynafaw271
43 Followers 2K Following 15-30% Monthly | 2 High-Conviction Stocks.Short-Term Gains: 15-20% in Days/Weeks.DM "JOIN" for WhatsApp Alerts. Live Trade Signals • Market Analysis
Shagun Sodhani @shagunsodhani
4K Followers 892 Following @GoogleDeepMind Previously FAIR (@AIatMeta), @Mila_Quebec, @MSFTResearch, @AdobeResearch, @IITRoorkee. All views are my own.
Thetue @ThetuesiHwk
61 Followers 2K Following
Aguuxqour @Aguuxqour6688
21 Followers 256 Following
Eeguda @Eeguda2846
6 Followers 262 Following
Armauvu @Armauvu492
21 Followers 361 Following
Smawrro @SmawrroudwhT
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Kaiyu Yang @KaiyuYang4
4K Followers 2K Following Research Scientist at @Meta Fundamental AI Research (FAIR), New York. Previously: Postdoc @Caltech, PhD @PrincetonCS, Undergrad @Tsinghua_Uni.
Anna @koelpin57189
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Anna @CathrynZie32296
3 Followers 164 Following
Qinglin Zhu @qinglin_zhu1
31 Followers 1K Following
Silas @silasmarvin2
349 Followers 274 Following Writing software @postgresml Building: https://t.co/92aCmLWfBn 🦀⚡️enthusiast
Teeno @TeenoaTwp
64 Followers 7K Following
ElsaElsie @ugu68u2i9JYT9HL
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PearlRosalind @e9oySKv0zzPIUY5
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Thessoson @ThessosondKI
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ミサ📖40代ブロ... @zurukuka1977
398 Followers 458 Following 映画・読書好きの大学生,月10本の映画鑑賞,ブログで4桁収益を目指す,キックボクシング歴6年
Sophia Mia @Hendees168732
88 Followers 7K Following I don’t follow rules…I lead from my heart, not my head.
julian G @guillenjuliann
61 Followers 1K Following Papá de un niño con TEA y amo serlo. Futuro dev . Hincha del más grande
Sanudnopl @SanudnoplVQ5ze
55 Followers 5K Following
Ardent @ookandaemi57514
72 Followers 7K Following
Sceau @SceauykEG8QD
11 Followers 634 Following
Shore @ShoreNwJU86M
53 Followers 4K Following
Blooming @shindoujun38295
83 Followers 7K Following
Dornin @DorninPNW6
47 Followers 5K Following
MaxineAustin @ZBcr603Q9DEl55
50 Followers 6K Following
Tones @Tones9myY
37 Followers 5K Following
Sotetarem @SotetaremocFWZ
51 Followers 4K Following
Amanda Huang @amandamhuang
705 Followers 390 Following Early stage infra investor @BainCapVC, @creativecloud, something something dev tools
Maisie @3Bwh3eVx7nV1i8
52 Followers 5K Following
BenWhitman @DrBenWhitman
312 Followers 4K Following Crafting tools to measure & improve AI performance for product people, prompt engineers and devs working with LLMs
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.
Delip Rao e/σ @deliprao
62K Followers 5K Following Busy inventing the shipwreck. @Penn. Past: @johnshopkins, @UCSC, @Amazon, @Twitter ||Art: #NLProc, Vision, Speech, #DeepLearning || Life: 道元, improv, running 🌈
Sebastian Raschka @rasbt
358K Followers 1K Following ML/AI researcher & former stats professor turned LLM research engineer. Author of "Build a Large Language Model From Scratch" (https://t.co/O8LAAMRzzW).
Yann LeCun @ylecun
955K Followers 765 Following Professor at NYU. Chief AI Scientist at Meta. Researcher in AI, Machine Learning, Robotics, etc. ACM Turing Award Laureate.
Jim Fan @DrJimFan
327K 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.
Aran Komatsuzaki @arankomatsuzaki
146K Followers 305 Following Looking for a cofounder. Sharing AI research. Early work on AI (GPT-J, LAION, scaling, MoE). Ex ML PhD (GT) & Google.
Soumith Chintala @soumithchintala
252K Followers 1K Following Cofounded and lead @PyTorch at Meta. Also dabble in robotics at NYU. AI is delicious when it is accessible and open-source.
Yi Tay @YiTayML
47K Followers 82 Following research scientist @googledeepmind ✨♊, model co-lead/captain of gemini deepthink imo gold medal 🥇, opinions are my own.
Christopher Manning @chrmanning
152K Followers 229 Following Founder, @stanfordnlp and cs224n. Assoc. Director, @StanfordHAI. Prof. CS & Linguistics, @Stanford. GP @aixventureshq. Australian🇦🇺. Do #NLProc & #AI. 👋
Wojciech Zaremba @woj_zaremba
121K Followers 204 Following Co-Founder of OpenAI https://t.co/OCQ3mpf0IN
MMitchell @mmitchell_ai
80K Followers 1K Following Interdisciplinary researcher focused on shaping AI towards long-term positive goals. ML & Ethics. Similar content in the Skies (this bird has flown).
Kristian Lum @KLdivergence
24K Followers 1K Following Research Scientist at Google DeepMind | @FAccTConference OG | Past Twitter META, @hrdag & UPenn, UChicago faculty |
vicki @vboykis
55K Followers 1K Following lots of lists of floats. Founding ml engineer in recsys/search. building ✨I like Nutella.
Bob Wachter @Bob_Wachter
242K Followers 289 Following Chair, UCSF Dept of Medicine. Career: What happens when a poli sci major becomes an academic physician. Author: "A Giant Leap" (2026). Hubby/Dad/Grandpa/Golfer.
Lucas Beyer (bl16) @giffmana
110K Followers 523 Following Researcher (now: Meta. ex: OpenAI, DeepMind, Brain, RWTH Aachen), Gamer, Hacker, Belgian. Anon feedback: https://t.co/xe2XUqkKit ✗DMs → email
P. Oscar Boykin @posco
9K Followers 2K Following engineer for recommendations at @Netflix. Former employee of @stripe, @twitter. Former academic. Programmer. Maui resident. Just some guy. @[email protected]
Deb Raji @rajiinio
30K Followers 557 Following AI accountability, audits & eval. Keen on participation & practical outcomes. CS PhDing @UCBerkeley. forever @AJLUnited, @hashtag_include ✝️
Sarah Catanzaro @sarahcat21
14K Followers 1K Following “All methods are sacred if they are internally necessary” (GP @amplifypartners, prev @canvasvc; Head of Data @Mattermark; @palantirtech; @c4ads)
Jo Kristian Bergum @jobergum
19K Followers 1K Following CEO https://t.co/sYmUNgPBq8 - The retrieval engine for agents.
Jesse Michael Han @jessemhan
4K Followers 590 Following @morph_labs // prev. research @OpenAI / PhD in math and neural theorem proving
Ted Sanders @sandersted
9K Followers 1K Following Research at OpenAI. Be kind to others, and yourself.
Eric @ericmitchellai
9K Followers 564 Following co-lead @openai post-training frontiers team w/ the great @yanndubs; I like ai and music and some other things
Tibor Blaho @btibor91
31K Followers 2K Following Lead Engineer at @AIPRMcorp (https://t.co/fepyWfV4kA) and @lrt_co (https://t.co/p7LEvIKduG), building AIPRM for ChatGPT & Claude. Signal @ btibor.91
Yu Bai @yubai01
6K Followers 2K Following Research @OpenAI. Trained models for GPT5 Thinking / Mini; Contributor to gpt-oss, o3-mini, o1. Previously @SFResearch, PhD @Stanford.
Alex Trott @alexrtrott
786 Followers 289 Following Research @DbrxMosaicAI. Neuroscience PhD in a previous life. Whispering models into sentience one parameter at a time. (opinions are my own.)
❄️Andrew Zhao❄�... @_AndrewZhao
4K Followers 3K Following PhD @Tsinghua_Uni. Absolute Zero,ExpeL,Diver-CT Ex. intern@MSFTResearch,@ BIGAI. Interested in RL, Reasoning/Safety 4 LLMs, Agents. On industry job market 2026
Teortaxes▶️ (Deep... @teortaxesTex
45K Followers 3K Following We're in a race. It's not USA vs China but humans and AGIs vs ape power centralization. @deepseek_ai stan #1, 2023–Deep Time «C’est la guerre.» ®1
adam bain @adambain
124K Followers 10K Following Investor at 01A. We spent a fortune on our website, so check it out: https://t.co/So3Ge6bpkR. Was Twitter COO.
OpenRouter @OpenRouterAI
55K Followers 308 Following Discover and use the latest LLMs. 500+ models (incl. 50+ free), explorable data, private chat, & a unified API. https://t.co/qJG5mKrigL
Nuno Campos @nfcampos
3K Followers 1K Following @LangChainAI “that most limited of all specialists, the well-rounded man” https://t.co/sWDUx7YcQa
Dithering @ditheringfm
5K Followers 6 Following A fun, smart podcast from @benthompson and @gruber. Covers by @bradellis, editing by @jmetzendorf.
Tecton @TectonAI
1K Followers 113 Following Build and deploy production-grade machine learning applications with the #FeaturePlatform for #MachineLearning, from the creators of Uber Michelangelo.
Ernest Ryu @ErnestRyu
6K Followers 349 Following Professor of Mathematics at UCLA. Interested in deep learning and optimization.
Ndea @ndea
8K Followers 79 Following A new intelligence science lab founded by @fchollet & @mikeknoop.
near @nearcyan
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Erik Torenberg @eriktorenberg
140K Followers 4K Following General Partner @a16z. Seed investor in Scale AI, Applied Intuition, Pave, Lattice, Rappi
GitHub Next @GitHubNext
24K Followers 49 Following We are a team of researchers and engineers at @GitHub who investigate the future of software development.
Geoffrey Thomas @geofft
2K Followers 750 Following systems engineer/UNIX arcanist ⌨️ safe streets @flatbushsts4ppl 🚸 more homes @opennyforall 🏙️ @ELCA ⛪️ @LooseLeafSecure 🍃 @rustlang 🦀 he/they (Gal 3:28)
Wangda Tan @leftnoteasy
217 Followers 264 Following CTO & Co-Founder at https://t.co/l3GZZc31FW. ex SQL @ Snowflake, Member of Apache Software Foundation
Jon Bratseth @jonbratseth
428 Followers 50 Following CEO https://t.co/5qXgcEp1MU Build things and help people.
Maggie Hott @maggie_hott
4K Followers 611 Following Leadership @OpenAI. Previously Dir of Sales @webflow. Early hire at @slackHQ. 👼 GP @20sales_vc Iron(wo)man, diver 🐠, ⛰climber, cancer survivor 🎗️, mom.
SFMTA @SFMTA_Muni
173K Followers 474 Following We manage Muni, parking, bike & walking projects, traffic & taxis. Follow for real-time #SFMuni updates. Hours & more info at https://t.co/ZjbayMmBXN.
Kiana Ehsani @ehsanik
4K Followers 594 Following Co-Founder @ Vercept, Ph.D. @uwcse, Interested in computer vision, Agents and AI, Climber on the weekends.
rahul @rahulgs
4K Followers 1K Following
ACL 2025 @aclmeeting
22K Followers 52 Following Association for Computational Linguistics | ACL 2025 conference | The 63rd Annual Meeting of the ACL Hashtags: #NLProc #ACL2025NLP
Thang Luong @lmthang
27K Followers 95 Following Lead Superhuman Reasoning team @GoogleDeepMind. AI IMO Gold. Co-led #DeepThink, #AlphaGeometry, #Bard (now Gemini) Multimodality, #MeenaBot. LuongAttention.
Sharon Y. Li @SharonYixuanLi
11K Followers 803 Following Prof @WisconsinCS. Making AI reliable for the open world.
Shivalika Singh @singhshiviii
2K Followers 773 Following Research Engineer @Cohere_Labs @cohere | @huggingface fellow 🤗 | “Research means that you don't know, but are willing to find out” ✨
Julius AI @JuliusAI_
18K Followers 157 Following AI Data Analyst Connect data, ask questions, create visualizations and instant answers 📊 New launch: Scheduled Runs for daily data reporting!
Youngseog Chung @YoungseogC
470 Followers 625 Following PhD student at @mldcmu, @AutonLab | Jazz enthusiast | Tennis player
Microsoft AI @MicrosoftAI
2K Followers 6 Following We build responsible AI to empower people | https://t.co/A80GqUp4Kb
Karun Kaushik @karunkaushik_
6K Followers 347 Following Co-founder @GetDelve (AI-native compliance) | YC W24 | @ZFellows | Prod | prev. AI @MIT
Silas Alberti @silasalberti
10K Followers 541 Following vibing with devin @cognition | ai phd student @stanford | prev: @janestreetgroup, @googledeepmind
Kevin Lu @_kevinlu
9K Followers 220 Following @thinkymachines. formerly: - @openai: RL, synthetic data, efficient models - @berkeley_ai: decision transformer, universal computation
Liz Ann Sonders @LizAnnSonders
481K Followers 739 Following Chief Investment Strategist, Charles Schwab & Co., Inc. Disclosures: https://t.co/UPkjXSZ9uc
Shuchao Bi @shuchaobi
13K Followers 691 Following Research @Meta Superintelligence Labs, RL/post-training/agents; Previously Research @OpenAI on multimodal and RL; Opinions are my own.
Anne Ouyang @anneouyang
7K Followers 926 Following Building @Standard_Kernel, CS PhD student @Stanford | prev: cuDNN @Nvidia, M.Eng, B.S. in CS @MIT | efficient scalable self-improving AI systems | 🌽KernelBench
Mad ML scientist @HououinTyouma
3K Followers 2K Following Chief Entropy Reduction Officer | Technology Reviews's 10 billion under 10 billion | Internet femptocelebrity | Aspiring quantum wizard