Sushant Sachdeva @sushnt
Faculty@UToronto CS, Researcher @openai, Vector Institute faculty. Algorithms, Optimization, Learning. cs.toronto.edu/~sachdeva/ Mountain View, CA Joined February 2009-
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Check tickets, create a jam. Let everyone go at T minus 2. Truly performative. No one is checked, everyone is delayed. @Caltrain @CaltrainIssues
I’m excited to share that I’ll be joining OpenAI and look forward to working with the exceptional team there. It was a difficult decision to move on. I’m incredibly proud of the amazing team at Google and everything we’ve built together. It has been an honor and a pleasure to work with all of you.
@roydanroy Is co-mathematician available for academics?
"The Regents vote went completely contradictory to the faculty recommendation to retain the SAT...what I keep hearing from people is your faculty want this. 1400, 1600, whatever. And the January 2020 report that unanimously recommended retaining standardized testing from the faculty, which the Board of Regents then unanimously voted against." -- President Milliken (just now in a meeting of the Assembly of the Academic Senate) O.M.G.
I'm confident @Uber intentionally misleads. I dare them to release a plot of initial estimate vs actual arrival in the bay area.
Standard experience booking an Uber “5 minutes away” I order it “Finding your driver…” “Pickup in 7 minutes” I open my timer 9 minutes and 21 seconds later, it arrives This is so tedious and I am tired of being deceived at the margin
Codex may have legitimately done something novel using "Idea Descent" today. Gonna write about this one soon. Funny aside: the spike is me suggesting a stupid idea that it tried, and clearly was bad.
I think people underestimate the effect GPT-5.x is already having on research in mathematical fields. 5.5 Pro has been proving many theorems for me, but I don’t talk about it much because I want to publish those results with my name on it and that’ll take time to write up.
Such a well deserved honor! Few papers ever spawn an entire field, and this was certainly one of them. Congratulations Ilias Diakonicolas, @thegautamkamath , Daniel Kane, Jerry Li, Ankur Moitra, Alistair Stewart. 🎉🎉
Honoured that our 2016 paper, Robust Estimators in High Dimensions without the Computational Intractability, w/ Ilias Diakonikolas, Daniel Kane, Jerry Li, Ankur Moitra, Alistair Stewart, was awarded the 2026 Gödel Prize This is the highest award for papers in theoretical CS. 1/7
@asaf_nachmias @scottnarmstrong @origurel Oh sorry, I didn't realize you were on Twitter/X. Should have tagged you 😅
5.5 Pro one-shot settled the tight localization of electrical flows w/ a cute proof. This improves the log^2 n result of Schild-Rao-Srivastava. Many excellent researchers and myself had thought about this q for a long time.
We now know that with an appropriate harness both Mythos and GPT-5.5 can reproduce what our internal model did in one-shot for the unit distance problem. Clearly there is an insane overhang of capabilities with this generation of models, and no ceiling in sight for what
Here's the paper arxiv.org/pdf/2605.24130
OpenAI models have now solved a question many mathematicians have attempted very seriously. This is thrilling yet frightening! Only two years since the models couldn't reliably do high school math before o1 preview in Sept 2024. Any now imagine if the same progress continues!
AI has now solved a major open problem -- one of the best known Erdos problems called the unit distance problem, one of Erdos's favourite questions and one that many mathematicians had tried. openai.com/index/model-di…
@quantum_geoff Hey hey, do you think he'd really commit to his random guess. ;) Without commitment, he can force you to the worst case everytime
You've been asking for this one... Now in preview: Codex in the ChatGPT mobile app. Start new work, review outputs, steer execution, and approve next steps, all from the ChatGPT mobile app. Codex will keep running on your laptop, Mac mini, or devbox.
X is now showing ads / paid posts without an ad label. What are we even doing here? @nikitabier
The models have reached a stage where the chance of them catching an error in a written proof is comparable or better than a significant fraction of well-qualified human reviewers
Fun fact: the fatal errors were initially flagged using @OpenAI's GPT-5.5
@CogniCarbon Did you score Dr. Rhonda Patrick?
Congratulations @thegautamkamath ! Very well deserved 🎉👏🏽
I am honoured (and still a bit stunned) to receive the 2026 Presburger Award from @eatcs_secretary. This recognizes 1 or 2 young scientists for outstanding contributions in theoretical CS This honour is shared w my collaborators, students, institutions, & research community 1/7
GPT-5.5 is a very good model. Started using the chatgpt app again.
Gautam Kamath @thegautamkamath
65K Followers 620 Following Assistant Prof of CS @UWaterloo, Faculty @VectorInst, Canada @CIFAR_News AI Chair. Joining @NYU_Courant Fall 2026. Co-EiC @TmlrOrg. I lead @TheSalonML.
Boaz Barak @boazbaraktcs
33K Followers 818 Following Computer Scientist. See also https://t.co/EXWR5k634w . @harvard @openai opinions my own.
Sasho Nikolov (thesas... @thesasho
4K Followers 434 Following Associate professor at U of T. Computer science and math research: (differentially) private data analysis, geometry, discrepancy, optimization.
Pravesh K. Kothari @praveshkkothari
4K Followers 456 Following Assistant Professor @PrincetonCS @Princeton Applied Math (PACM) Research: Theoretical Computer Science, Optimization, Algorithmic Statistics.
Tom Gur @TomGur
5K Followers 307 Following Professor @Cambridge_Uni. My research is in Theoretical Computer Science and Quantum Computing.
𝖬𝖺𝗁𝖽𝗂 ... @mahdi_tcs_
4K Followers 715 Following CS prof@ U. Michigan-Ann Arbor. Opinions are mine & may evolve. r/t≠endorsement. I don't interact w/ anonymous accounts. Moving to Bluesky: @mahdi.ch he/him/his
Rasmus Pagh @RasmusPagh1
2K Followers 383 Following Professor of computer science at @barcdk, University of Copenhagen. Interested in random things and their applications. Also @rasmuspagh.net on BlueSky
Ryan Williams @rrwill... @rrwilliams
8K Followers 472 Following Professor @MITEECS and @MIT_CSAIL, currently visiting @the_IAS. Complexity, algorithms, and related math. I'll let you know when P != NP (and when it's not)
Sebastien Bubeck @SebastienBubeck
78K Followers 1K Following I work on AI at OpenAI. Former VP AI and Distinguished Scientist at Microsoft.
Nutan Limaye @nutanlimaye
3K Followers 300 Following Also at @nutanlimaye.bsky.social and @[email protected]
Dan Roy @roydanroy
66K Followers 2K Following @Google DeepMind. On leave, Canada CIFAR AI Chair and Former Research Director, @VectorInst. Professor, @UofT (Statistics/CS). Views are my own.
Aaron Roth @Aaroth
12K Followers 658 Following CS prof at Penn. Amazon Scholar at AWS. Author of The Ethical Algorithm (w/ Michael Kearns). I study machine learning, privacy, game theory, and uncertainty.
Arya Mazumdar @MountainOfMoon
4K Followers 366 Following Professor @UCSanDiego Dy. Director+AD Research NSF AI Inst https://t.co/wblPm6DhUX, UCSD Site Lead @encoreinstitut Information Theory, Coding Theory, Machine Learning
Greg Bodwin @GregBodwin
1K Followers 378 Following Assistant professor at @EECSatMI. I do theoretical computer science and graph theory.
Jason Lee @jasondeanlee
35K Followers 5K Following Associate Professor CS/stats UC Berkeley. Former Research Scientist at Google DeepMind. ML/AI Researcher working on LLMs and deep learning. PhD at Stanford.
Prof. Anima Anandkuma... @AnimaAnandkumar
40K Followers 2K Following AI+Science, Bren Professor @caltech, Time100, Fmr Sr Director of #AI research @nvidia Fmr Principal Scientist @awscloud
Shubhendu Trivedi @_onionesque
10K Followers 897 Following Cultivated Abandon. Twitter interests: Machine learning research, applied mathematics, mathematical miscellany, ML for physics/chemistry, books.
Simons Institute for ... @SimonsInstitute
10K Followers 340 Following The world's leading venue for collaborative research in theoretical computer science. Follow us at https://t.co/KvcuGI7WM0.
Amin Karbasi @aminkarbasi
13K Followers 3K Following VP & Chief AI Scientist at Cisco. Former Chief Scientist at Robust Intelligence (acquired by Cisco). ex Prof at Yale, ex Googler. Views my own.
Yu Yang @YuYang_i
6K Followers 847 Following research @OpenAI 🍓 reasoning & data algorithms | BSc & PhD @UCLA 🐻 | Life’s all about taste.
DavidDev @DavidDevMel
1 Followers 60 Following
kaoru @kaoru985478
5 Followers 229 Following
Dimethylmercury @purnacool
1K Followers 1K Following World Affairs | Geopolitics | Foodie | Procurement, Planning & Contracts - O&G |Maths/Machines/Movies/Money/Mallu/Mumbai Indians/MBA; views expressed are my own
Moon Investor @MoonInvestr
21K Followers 15K Following
Peng Cheng, asking λ... @tribbloid
588 Followers 579 Following doubling down on Scala ♨️ and Apache Spark 🌟 for ML ∇, provers ∀ & swarms 🐝. maintainer of shapesafe, spookystuff and splain plugin
autodidac @autodidaclzfm
0 Followers 5K Following
Prof Anon CS @profannoncs
7 Followers 402 Following
Harrfun @BaFiyALaAz7271
32 Followers 883 Following Never be so polite you forget your power. Never wield such power you forget to be kind
Sahil Deep @alpha1242
3 Followers 313 Following
Agirobott @Agirobott
2 Followers 250 Following
scout @scoutedition
0 Followers 30 Following
RG1883 @rg1883
13 Followers 330 Following
Susan Zhang @suchenzang
46K Followers 1K Following @ Google Deepmind. Past: @MetaAI, @OpenAI, @unitygames, @losalamosnatlab, @Princeton etc. Always hungry for intelligence. Only my opinions stored here.
Jack jones @JackJ64843
132 Followers 7K Following
Chaitanya Agarwal @culechetoo
101 Followers 768 Following PhD@NYU in Programming Languages and Verification I Cricket | Cule
Arjun Panickssery @panickssery
7K Followers 3K Following Building accelerated, individualized learning @Zembla_
Vish Sivakumar @_vishar
468 Followers 347 Following Co-founder and member of technical staff @FlourishAILabs. Past: @RealityLabs (Neural Interfaces), @AIatMeta (FAIR).
Dr ™©®™ 🚀 @ste_alth
49 Followers 5K Following
Stanislav (Standa) Zi... @StanislavZivny
111 Followers 141 Following Professor of Computer Science @UniofOxford. Fellow of @MertonCollege. Lived in 🇨🇿 🇳🇱 🇫🇮 🇺🇸 🇬🇧 (opinions are my own)
Nika Haghtalab @nhaghtal
4K Followers 283 Following Associate Professor @Berkeley_EECS. Research on Foundations of ML and AI.
Ayush Khaitan @ayushkhaitan343
105 Followers 588 Following Math and AI @PrincetonPLI. Previously at @RutgersU
bialaa @bialaa493978
1 Followers 89 Following
Jay Sawant @JaySawant0204
95 Followers 658 Following Power Systems Engineer at National Laboratory of the Rockies (formerly NREL)| NC State Power Systems Grad | All views are my own.
MMK @MMK2603
91 Followers 7K Following
Tan Khan @TanKhanrd
3 Followers 520 Following
Pete S Gilman @pete_gilman
662 Followers 1K Following Fairway hustler Swingin’ & shimmyin’ on the fairway | Golf lover | Chasing birdies & good vibes ShimmyGolf
Praveen Varukolu 🇮... @Prawinforwin
282 Followers 6K Following Never Stop Learning | Know Yourself First | Be Happy | Live with Contentment
Chhavi Yadav @chhaviyadav_
3K Followers 3K Following @mldcmu @UCBerkeley | Post-training AI | Reasoning, Safe, Private & Secure AI
krishna karthick @krishnazzzzzzzz
5 Followers 310 Following
Pragun Bhutani @pragun_707
37 Followers 532 Following
ADITYA PRAKASH @the_foxbat02
59 Followers 709 Following on the way to event horizon; learn, practice, execute & teach. @binghamtonu @bing_watson
Anubhav Jha @JhaAnubhav10
11 Followers 101 Following
Gautam Kamath @thegautamkamath
65K Followers 620 Following Assistant Prof of CS @UWaterloo, Faculty @VectorInst, Canada @CIFAR_News AI Chair. Joining @NYU_Courant Fall 2026. Co-EiC @TmlrOrg. I lead @TheSalonML.
Jelani Nelson @minilek
30K Followers 305 Following Professor and Department Chair @Berkeley_EECS. Research Scientist (part-time) @GoogleResearch. Founder @addiscoder. Posts are personal views. 🇻🇮🇺🇸🇪🇹
Boaz Barak @boazbaraktcs
33K Followers 818 Following Computer Scientist. See also https://t.co/EXWR5k634w . @harvard @openai opinions my own.
TCS blog aggregator @cstheory
6K Followers 9 Following Posts from the Theory of Computing Blog Aggregator maintained by @nimaanari, @abhatt2, and @thegautamkamath.
Sasho Nikolov (thesas... @thesasho
4K Followers 434 Following Associate professor at U of T. Computer science and math research: (differentially) private data analysis, geometry, discrepancy, optimization.
Pravesh K. Kothari @praveshkkothari
4K Followers 456 Following Assistant Professor @PrincetonCS @Princeton Applied Math (PACM) Research: Theoretical Computer Science, Optimization, Algorithmic Statistics.
Yann LeCun @ylecun
1.2M Followers 787 Following Professor at NYU & Executive Chairman at AMI Labs. Ex-Chief AI Scientist at Meta. Researcher in AI, Machine Learning, Robotics, etc. ACM Turing Award Laureate.
Tom Gur @TomGur
5K Followers 307 Following Professor @Cambridge_Uni. My research is in Theoretical Computer Science and Quantum Computing.
𝖬𝖺𝗁𝖽𝗂 ... @mahdi_tcs_
4K Followers 715 Following CS prof@ U. Michigan-Ann Arbor. Opinions are mine & may evolve. r/t≠endorsement. I don't interact w/ anonymous accounts. Moving to Bluesky: @mahdi.ch he/him/his
Rasmus Pagh @RasmusPagh1
2K Followers 383 Following Professor of computer science at @barcdk, University of Copenhagen. Interested in random things and their applications. Also @rasmuspagh.net on BlueSky
Ryan Williams @rrwill... @rrwilliams
8K Followers 472 Following Professor @MITEECS and @MIT_CSAIL, currently visiting @the_IAS. Complexity, algorithms, and related math. I'll let you know when P != NP (and when it's not)
Sebastien Bubeck @SebastienBubeck
78K Followers 1K Following I work on AI at OpenAI. Former VP AI and Distinguished Scientist at Microsoft.
Nutan Limaye @nutanlimaye
3K Followers 300 Following Also at @nutanlimaye.bsky.social and @[email protected]
Dan Roy @roydanroy
66K Followers 2K Following @Google DeepMind. On leave, Canada CIFAR AI Chair and Former Research Director, @VectorInst. Professor, @UofT (Statistics/CS). Views are my own.
Aaron Roth @Aaroth
12K Followers 658 Following CS prof at Penn. Amazon Scholar at AWS. Author of The Ethical Algorithm (w/ Michael Kearns). I study machine learning, privacy, game theory, and uncertainty.
Arya Mazumdar @MountainOfMoon
4K Followers 366 Following Professor @UCSanDiego Dy. Director+AD Research NSF AI Inst https://t.co/wblPm6DhUX, UCSD Site Lead @encoreinstitut Information Theory, Coding Theory, Machine Learning
Timothy Gowers @wtgow... @wtgowers
57K Followers 187 Following Mathematician. Professeur titulaire de la chaire Combinatoire au Collège de France. Also fellow of Trinity College Cambridge.
Greg Bodwin @GregBodwin
1K Followers 378 Following Assistant professor at @EECSatMI. I do theoretical computer science and graph theory.
Shane Legg @ShaneLegg
81K Followers 66 Following Chief AGI Scientist & Co-Founder, Google DeepMind Work website: https://t.co/E4SyeGVYXk Personal blog: https://t.co/LL9JNdNpW1
Chris Lakin @chrislakin
13K Followers 996 Following my loss function is burnout + conflict-avoidance in people making AI go well
Sarah Friar @thefriley
21K Followers 298 Following CEO & CFO ∙ Walmart, Consensys, Operation Hope, Blavatnik and Stanford Digital Economy Lab Boards ∙ Ladies Who Launch co-launcher ∙ Mum x2 ∙ N. Irish
Konstantin Mishchenko @konstmish
8K Followers 730 Following Research Scientist @AIatMeta Previously Researcher @ Samsung AI Outstanding Paper Award @icmlconf 2023 Action Editor @TmlrOrg I tweet about ML papers and math
Aram Harrow @quantum_aram
4K Followers 459 Following
Hongxun Wu @HongxunWu
2K Followers 397 Following Researcher @OpenAI. Was a grad student at Berkeley theory group.
NOBUNAGA🇯🇵🏯_... @japan_nobunaga
281K Followers 0 Following Honest perspectives on Japan — culture, traditions, daily life. https://t.co/T9IxSnJ9mu
The OpenAI Foundation @FoundationOAI
7K Followers 0 Following OpenAI was founded in 2015 as a nonprofit; its mission is to ensure artificial general intelligence benefits all of humanity.
Victor Reis @vetohaze
462 Followers 137 Following Senior researcher @MSFTResearch. Previously postdoc @the_IAS, PhD @uwcse
Aaron Lou @aaron_lou
3K Followers 625 Following Leading Strategic Explorations @OpenAI, prev @Stanford. Invented modern diffusion LMs
Ori Gurel-Gurevich @origurel
290 Followers 628 Following Mathematician at the Hebrew University of Jerusalem
Asaf Nachmias @asaf_nachmias
124 Followers 1K Following
adalricP @AdalricP
898 Followers 1K Following 19, Physics, CS & bits of Robotics :) @_lagrangepoint, @join_ef, Homeschooled/autodidact. @IITGuwahati @CSIR_IND Romans 8:31
Edgar Dobriban @EdgarDobriban
2K Followers 251 Following Associate prof @Wharton @Penn. #Stats #ML #AI. PhD @Stanford. BA @Princeton. Recruiting students & postdocs.
Amruta Godbole @dj_roots
3K Followers 269 Following Lawyer @ Instagram/Threads. Central Figure of Beloved Meme.
Afroz Mohiuddin @afrozenator
1K Followers 5K Following @OpenAI, ex @Google. Interested in Science, Psychology, Investing. Good Thoughts, Good Words, Good Deeds.
EigenGender 🔸 @EigenGender
9K Followers 935 Following priestess and paladin of Iomedae. Utopian. alt @latentgender
mattparlmer 🪐 🌷 @mattparlmer
36K Followers 12K Following Recursively self-improving and self-replicating factories @genfabco — rationalist and friend of the future
Kim-Mai Cutler @kimmaicutler
58K Followers 32K Following Partner at @initialized. When life hands me lemons, I make tarte au citron.
Stephan Hoyer @shoyer
9K Followers 773 Following AI for science at @PeriodicLabs. Formerly, building AI climate models at Google. I also contribute to the scientific Python ecosystem (Xarray, NumPy, JAX).
Laurentia Romaniuk @Laurentia___
4K Followers 276 Following model behavior @openai; librarian by trade
Phillip Guo @phuguo
956 Followers 571 Following Safety Oversight researcher @ OpenAI. Previously jailbreak researcher @ Grayswan, trading intern @ Jane Street, robustness research @ MATS
Santhoshini Velusamy @Santho_Velusamy
801 Followers 374 Following Assistant Professor, University of Waterloo. PhD, Harvard University (2023). Recipient of NSERC Discovery Grant, NSF CRII award, and Google PhD fellowship.
Samuel Albanie 🇬�... @SamuelAlbanie
8K Followers 1K Following gemini evals & post-training @GoogleDeepMind
Bartosz Naskręcki @nasqret
12K Followers 461 Following Mathematician | Vice-Dean @UAM_Poznan | Researcher @ccaiwut | Owner of https://t.co/lEspgf36Pg | Mathematics, AI and programming
Lindsay McCallum Rém... @lindsmccallum
8K Followers 3K Following comms @openai // previously @headlinevc @twitter 1.0 @publicisgroupe paris // very online
Mia Glaese @mia_glaese
4K Followers 65 Following
Patrick Hsu @pdhsu
73K Followers 3K Following @ArcInstitute co-founder, @Stanford professor, @ThriveCapital investor | biology and ML research | 🇨🇦 prev @harvard @broadinstitute, Fast Grants
Timothy Lillicrap @countzerozzz
1K Followers 78 Following Artificial Intelliegence & Neuroscience Research Scientist @ DeepMind & UCL
Joanne Jang @joannejang
51K Followers 1K Following trying to automate my work @coreautoai // prev: model behavior & labs @openai
Harshit Sikchi @harshit_sikchi
2K Followers 1K Following Research@OpenAI; Reinforcement Learning; PhD@UT Austin. Previously FAIR Paris @AIatMeta, @CMU_Robotics @NVIDIAAI @UberATG.
Eric @ericmitchellai
12K Followers 592 Following chatgpt posttraining @openai. building personal agi. I like ai and music and some other stuff
Arram @arram
13K Followers 998 Following I make beautiful things. Art, Meditation, Writing, Angel Investing Personal site: https://t.co/pdxEHdr6Ip Substack: https://t.co/QPLJSCt5uo
Kaitlan Collins @kaitlancollins
1.5M Followers 1K Following Chief White House Correspondent and Anchor of The Source at 9 p.m., @CNN
Punjabi Vocabulary @punjabivocabul1
101 Followers 4 Following An account to build Punjabi vocabulary via sentences appearing in the literature. Maintained by @raghumahajan
Julie Kallini ✈️ ... @JulieKallini
3K Followers 505 Following CS PhD @StanfordNLP 🌲 Previously: SWE @Meta, Class of '21 @PrincetonCS
dylan matthews 🔸 @dylanmatt
73K Followers 1 Following I donate 10 percent of my income to effective charities and so can you https://t.co/3L39qEBEueYou might like
