Johnny Ho @randomjohnnyh
Cofounder, CSO @perplexity_ai. Former high frequency trader, competitive programmer. Think fast, build faster. perplexity.com New York, NY Joined December 2011-
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Jeremy Fineman presents his breakthrough algorithm at the ICPC 2025 World Finals in Baku: the first algorithm for single-source shortest paths with arbitrary negative weights (real, not integer) to improve upon Bellman-Ford from the 1950s: O~(m n^{8/9}) running time.
Hard problems won’t solve themselves.
self-replicating AI
self-replicating AI
Future of generating UI instead of generating answers.
Future of generating UI instead of generating answers.
The future of browsing is just beginning. All future interfaces will be optimized for AI interaction: Comet pushes the frontier here with an AI that saves you time across an unlimited number of websites and tools.
The future of browsing is just beginning. All future interfaces will be optimized for AI interaction: Comet pushes the frontier here with an AI that saves you time across an unlimited number of websites and tools.
The team had a lot of fun imagining this one up - research, browsing, code, images, charts, shopping, travel, and app generation, all in one. More capabilities are available today to free and pro users than ever before.
The team had a lot of fun imagining this one up - research, browsing, code, images, charts, shopping, travel, and app generation, all in one. More capabilities are available today to free and pro users than ever before.
We should be investing in raising math standards: not lowering them. The best thing my high school (Lynbrook) did for us was to not only allow but encourage students to accelerate in math, taking calculus/linalg/diffeq/statistics multiple years early so that college would feel…
We should be investing in raising math standards: not lowering them. The best thing my high school (Lynbrook) did for us was to not only allow but encourage students to accelerate in math, taking calculus/linalg/diffeq/statistics multiple years early so that college would feel…
We just accepted our latest class of four Perplexity Residents: huge thanks to everyone who applied. Each quarter we'll continue to push forwards and train the next generation of AI-native engineers, who know how to code, prompt, research, evaluate, generate, and train models…
HFT guys are welcome at @perplexity_ai
HFT guys are welcome at @perplexity_ai
Sharing an unbiased version of R1 as our first open source model. Just removing censorship for now - what kind of capabilities should we add next?
Sharing an unbiased version of R1 as our first open source model. Just removing censorship for now - what kind of capabilities should we add next?

Perplexity @perplexity_ai
336K Followers 63 Following Curiosity changes everything. Download our free app on iOS, Mac, Windows, and Android: https://t.co/BBZ1kG0TVG
Jim Fan @DrJimFan
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Jay Hack @mathemagic1an
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Soumith Chintala @soumithchintala
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elvis @omarsar0
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AK @_akhaliq
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Alex Graveley @alexgraveley
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Thomas Wolf @Thom_Wolf
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Sherwin Wu @sherwinwu
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Logan Kilpatrick @OfficialLoganK
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Jerry Liu @jerryjliu0
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Ngoc Diem Ly @Zinnia_USA
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ClaireAnna @075v19M6W1qB1
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Eddy Pei-Hao Su @peihaosu
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Svet M @Svettlyo
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HarrietObadiah @LE0y2bZA4OO6f
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Montgomery Twelve @Mont12Official
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Virginia Tiernan @vtiernan16
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Elontribe @Or4348928882474
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scaramouche @ratperson98154
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高育 楊 @Nopainguy
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CoralCarey @789ohx74vii13
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SectorRotation🇺�... @Klariefi598135
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matt sephton @gingerbeardman
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rm -rf @daodalus
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Cap @cap
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Amani Dach @AmaniDach54630
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Lawrence Chayi — Ch... @ch4pp13_
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Ярослав Сок... @create_delegate
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Sebastien Augsburger @sebastienaugsb2
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p @pt9311
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t @l_bluemoon3
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Aaron kirman @aaron_kirman7
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Rommel Ulises I. @romulisinf
77 Followers 838 Following Investigo, estudio y creo contenido educativo sobre blockchain | Rol: Técnico Comercial y Vibe Coder | Monto soluciones de IA | Contacto: MD
jane @snowballhappy1
9 Followers 265 Following
Perplexity @perplexity_ai
336K Followers 63 Following Curiosity changes everything. Download our free app on iOS, Mac, Windows, and Android: https://t.co/BBZ1kG0TVG
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.
Yann LeCun @ylecun
949K Followers 764 Following Professor at NYU. Chief AI Scientist at Meta. Researcher in AI, Machine Learning, Robotics, etc. ACM Turing Award Laureate.
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.
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.
Jay Hack @mathemagic1an
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Soumith Chintala @soumithchintala
250K 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.
elvis @omarsar0
263K Followers 664 Following Building with AI agents @dair_ai • Prev: Meta AI, Galactica LLM, Elastic, PaperswithCode, PhD • I share insights on how to build with AI Agents ↓
Daniel Gross @danielgross
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Alex Graveley @alexgraveley
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Wojciech Zaremba @woj_zaremba
119K Followers 204 Following Co-Founder of OpenAI https://t.co/OCQ3mpf0IN
Bojan Tunguz @tunguz
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Thomas Wolf @Thom_Wolf
94K Followers 6K Following Co-founder at @HuggingFace - open-source and open-science
Matt Arderne 🌊 @mattarderne
640 Followers 1K Following Co-founder https://t.co/V9ZvlfSPnn - AI automation for Fintech
TestingCatalog News �... @testingcatalog
32K Followers 999 Following Reporting AI nonsense. A future news media, driven by virtual assistants 🤖
Nick Davidov @Nick_Davidov
16K Followers 1K Following investor and serial founder in AI/ML/CV space. co-founder DVC - backing repeat founders. e/acc, go OSS
Cap @cap
24K Followers 469 Following Cap is the open source alternative to Loom. Lightweight, powerful, and cross-platform. Record and share securely in seconds with custom S3 bucket support.
Minh Pham @buckeyevn
551 Followers 179 Following Head of AI Agent Infra at @perplexity_ai | Ex: Google, Uber, CloudKitchens, Invisible
Barret Zoph @barret_zoph
21K Followers 1K Following CTO & Co-Founder Thinking Machines Lab (@thinkymachines) Past: - VP Research (Post-Training) @openai - Research Scientist at Google Brain
Po-Shen Loh @PoShenLoh
12K Followers 255 Following Social entrepreneur • Intl Math Olymp Fndn VP Advancement • Founder https://t.co/3P8QqOQ9QX NOVID expii • Math Professor @CarnegieMellon
Shane Parrish @ShaneAParrish
544K Followers 3 Following Mastering the best of what other people have already figured out
Bill Poucher @poucherw
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mb @buzinover
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Julie Zhuo @joulee
159K Followers 990 Following Founder @teamSundial. Angel investor. Author of "The Making of a Manager" https://t.co/6HwJhCW5Hi. Obsessed with systems. Design + data person.
James Liounis @JamesLiounis_
576 Followers 96 Following Sonar API guru @perplexity_ai | Harvard AI Alum
Weihua Hu @weihua916
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sathvik @vikvang1
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Lenny Rachitsky @lennysan
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Jeff Grimes @jeffgrimes9
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Jelani Nelson @minilek
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Dmitry Shevelenko @dmitry140
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unusual_whales @unusual_whales
2.5M Followers 2K Following Stocks/Options/Crypto/Market News + Tools. Not advice Get a bonus opening a new tastytrade account: https://t.co/wGf2ZdlXpw Discord: https://t.co/0xJ9e0ZYYG More: https://t.co/nsxZlPV0pC
Justin Graham @justinrgraham
5K Followers 1K Following Designer @perplexity_ai • AI & 3D things • ex-Architect • wood/leather/sounds • Building @lilcabins @dwfstudio • Past @google @flipboard @vsco @lyft and others
Perplexity Developers @PPLXDevs
3K Followers 15 Following Updates for developers building with Sonar. Power your products with the fastest, cheapest API offering out there with search grounding.
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TypeScript @typescript
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Cameron Stow @camerontstow
4K Followers 2K Following Leading social media @perplexity_ai @perplexitycomet | Husband & dad | Always curious | prev @molecule_dao
Ryo Lu @ryolu_
55K Followers 2K Following Head of Design @Cursor_ai. Early @NotionHQ, @Stripe, built startups. I make a world where anyone can make software. Aspiring k-pop idol.
Chanpory @chanpory
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Ali Shobeiri @Ali_Shobeiri
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Gunnar Gray @gunnargray
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Phi Hoang @apostraphi
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Nikita Bier @nikitabier
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nihana @nihana
2K Followers 1K Following building @pplxsupply at @perplexity_ai | constantly thinking about film, food, fashion, + the future 💫
Base Power @basepowerco
4K Followers 29 Following Base is building the foundation of American power.
Browserbase @browserbasehq
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Logan Kilpatrick @OfficialLoganK
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Perplexity Finance @PPLXfinance
24K Followers 28 Following Financial news for the curious. Real-time financial market data powered by @perplexity_ai
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