Christopher Sim @thisiscsim
Design @openai. x-@harvey, @flexport, @uber 🇲🇾🇺🇸🏳️🌈 instagram.com/thisiscsim San Francisco, CA Joined February 2012-
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Today’s the day, very excited to be joining @OpenAI to work on Codex
@soleio @pxd @joellewenstein @iansilber @felicis Sheesh, I don’t think it’ll ever get as stacked as this
OCT 6, San Francisco @pxd and I are bringing the design chiefs of Anthropic and OpenAI @joellewenstein and @iansilber on to one stage for a 4-way convo about AI, agents, and the future of design There will be great coffee, great banter, and great company. Hosted by @felicis
@_heyglassy 100%. This is basically how you build any skill or habit. Make it small enough to start, repeat it enough times, and eventually it becomes second nature.
@gabepereyra is the President & Co-Founder of @harvey, the most prominent legal AI startup and an industry leader in owning their own intelligence. I'm excited to share our conversation, which spans closed & open source, post-training, and how the law profession will evolve.
A beautiful surprise
I made a list of great startups to join. It's called the Breakout List. The list has 92 companies. These are the 20 with 25 or fewer employees: - Hone (@moritz_stephan, @CarloWillem, @oqbrady) - Normal (@ansonyuu, @hudzah) - Standard Intelligence (@G413N, @devanshpandey) - Tacit Labs (@ninklefitz, @AmDroste) - American Terawatt (@atroyn, @rslparker, @aranibatta) - Conduit (@clemvonstengel, @riopopper) - Convergent (Omkar Savant, Vivek Katara, @debnilsur) - Core Automation (@MillionInt, @_arohan_) - Engram (@dan_biderman, @EyubogluSabri, @realJessyLin) - Instinct (@noahrshinn) - Keenable (@styskin, Matthias Petri) - Lumaril (Mark Elliot, Ben Duffield) - Neion Bio (@Dimkell, Sam Levin) - Pangram Labs (@max_spero_, @bradley_emi) - Quadrillion (@echinaceous) - Re (@karnsaroya, @AnandDhillon, @thecliffwhite, @benaneesh) - Ricursive (@annadgoldie, @Azaliamirh) - Sail Research (@neilmovva, @blintzbase) - Trajectory (@rronak_, @michaelelabd, @QuantumArjun) - Watney Robotics (Sean Cheong, Ryan Gannon) Picks from Elad Gil, Charlie Songhurst, Keith Rabois, Mike Vernal, Alana Goyal, Sonya Huang, Ramtin Naimi, Marc Bhargava, Cory Levy, Aashay Sanghvi, Konstantine Buhler, John Luttig, Varun Gupta, Ray Tonsing and Avichal Garg. Disclosure: I'm a small investor in American Terawatt, Convergent, Standard Intelligence and Trajectory (in this post), and in Factory, Physical Intelligence and SF Compute (elsewhere on the list). I didn't vote. The full list is on Breakout List.
We're excited to welcome @asadovsky as our Chief Research Officer. Prior to Harvey, Adam co-led post-training at Microsoft AI and Google DeepMind. As CVP at Microsoft AI, he led post-training of MAI-Thinking-1. As a Distinguished Engineer at Google DeepMind, he led teams working on Gemini 1.0 through Gemini 2.5. Earlier at Google, he led teams working on Assistant, Search Quality, and Search Infrastructure.
We're hosting Design × Agents in SF on Sep 29. 3-5 fast demos/experiments. Drinks. No panels. Hear from folks at @OpenAI, @harvey, @mercor, @pendev, and more... luma.com/g4vhqudr
@burkov Marketplace is probably the reason its still around. And groups too.
@KalGrinberg Hugeeee, congrats man! Not surprised, y’all are absolutely killing it 🚀
@dbabbs @profound @sequoia @kleinerperkins Congrats Dylan!!! 🚀
.@harvey hired 1,000 people in 12 months, and will hire 600 more before EOY. 70% of the team joined in 2026. Their valuation's grown to $15.5B in four years. We asked VP Talent Maggie Landers how to build a company culture where 1,000 new hires can run as fast as possible:
I feel like an agent-first economy we'd probably end up with some kind of subscription tiers or reserved inventory to see whose agent gets priority. I personally love iMessage as the default interface. It’s intuitive, there’s nothing to relearn, and you can jump straight in, great for adoption. But makes it very tricky to run multiple tasks and the thread gets quite hard to manage when it's incredibly dense but maybe that's ok for most users.
The gift of being a beginner again. What a beautiful blessing.
Wild to think we’ve been building together since my first day. You were one of the reasons I joined, and I couldn’t have asked for a better PM partner. I’ll never forget all the insane things we somehow found a way to pull off 😂 Going to miss having you as my PM partner, you’ve set the bar unfairly high for everyone after you ❤️
Two years ago, I joined this small startup called @harvey. It turned out to be one of the best decisions I've ever made. It's extremely bittersweet to be closing out this chapter. Forever grateful to @nayakkayak, @bjornrostad, @ShawnFarsai, and @nikhil_patel13, who took a chance on me. I got to do some of the best work of my career alongside some of the most talented, ambitious, and kind people I’ve ever worked with. I’ll be cheering you all from the sidelines 💛
@IniAbiodun Getting to be curious, ask dumb questions, and learn all over again. Literally the most fun.
@nayakkayak @harvey @bjornrostad @ShawnFarsai @nikhil_patel13 Couldn't have done it without your leadership, guidance, and trust, thanks again for everything 🙏
Espurr Sentinel @13ariumSulfate
540 Followers 1K Following Tulane '17 | Technology Coordinator | PI 🐒 ❄ F'15 | Blerd ♚🕹| Web Developer | All tweets and opinions are my own
Lamar @bamafitnessnerd
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Grace Ling ✨ @gracepace_
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Marquis The Honey Bea... @MarquisHoney
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Tiffani Ashley Bell @tiffani
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Dr. Calvin Liang @cal_liang
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Deed @deed_mcellow
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Dr. ShanChuan 山川�... @wongyounggpt
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James Traina @EconTraina
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oh Chadol @OhChadol
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Rodrigo Martinez @rcamartinez
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KK @santonine000
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Isaque Coelho @coelhoxyz
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Aditya Induraj @indurajaditya
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s.omar.a @s_omar_ahmed
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Ian Dewancker @idewanck
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Rio @methylene_blue
137 Followers 2K Following Breaking down medical research into clear, easy-to-digest insights. Not medical advice.
taga | 暮山暖叙 @Qiqi7877
13K Followers 9K Following 每天分享世界新闻、老故事与情感瞬间。 只讲干货,不煽情,用清晰视角记录生活与时代的细微变化。 欢迎一起看世界、聊故事、感受那些温暖或真实的瞬间 ✨
stu @lambdastu
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FatOrangePaws @FatOrangePaws
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Brian Reithel @BR_zone
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場の遊戯者 @harenchiqueen
442 Followers 2K Following だれ。 ※なお、私は私の個人情報を公開する意思は一切ありません。故に個人を特定した場合には、個人情報漏洩になります。
Lin Lin @contactchienlin
47 Followers 1K Following
시안의 볼거리 �... @SianWatchNotes
1 Followers 59 Following 🐹 세상의 흥미로운 인물과 이야기를 기록합니다. Sian’s Curiosity Notes — people, stories & discoveries. 🎬 새로운 볼거리는 YouTube에서
mouse mikey @mousemikey36341
1 Followers 439 Following
TechFollow @TechFollowrazzi
898 Followers 1K Following Tracking who the tech people suddenly started following. #AI #robotics #founders #researchers signals, not noise. dm's open for suggestions.
Josh Brzeszkiewicz @joshbrez
237 Followers 793 Following Mac user. French speaker. Happy to know you.
Feops @fernandofeops
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Peter Gustafson @peterlgustafson
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joaoamericano @joaoamericano30
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cooper corbett @flooperflorbett
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Jason Cashdollar @jasoncashdollar
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jiejie @wngwngj18252553
0 Followers 26 Following
Chris Habib @chrishabib
175 Followers 336 Following
Steve J @SteveJo03138701
128 Followers 1K Following
Favour Adeniyi 🤭 @afrotechbabe
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Thoperno @Thoperno
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ailth @mushengziyue
1K Followers 4K Following AI exploration research learning, sharing all kinds of fun, interesting, and novel AI content and information AI探索研究学习 分享各类好玩有趣新奇的AI 内容和信息
Lamar @bamafitnessnerd
52K Followers 4K Following higher ed policy doctoral student + fake fitness guy + gaymer and nerd + introvert and socially awkward in real life + gentle
Grace Ling ✨ @gracepace_
7K Followers 2K Following Building kawaii apps and running fast! Founder @DsgnBuddies • Designer • 57K on LinkedIn • [email protected] 📍 SF/LA 🐰 https://t.co/izXbfgrec0
Mike Wamungu @MikeWamungu
1K Followers 1K Following views are my own. at your best you are love. storyteller for myself and others. design research @Adobe | @USCIovineYoung MS Design, Biz, Tech | @UCLA alum.
Nick Slater ☻ @slaterdesign
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Gold ✨️ @GoldN64
6K Followers 685 Following #Twitch Streamer • Vidya Gamer • Cosplayer • Yapper • Black Art Connoisseur • Board Game Collector 🎲🎮
Tiffani Ashley Bell @tiffani
32K Followers 19K Following Multipotentialite. Philanthropist. You might’ve been at @HowardU @StanfordGSB or YC with me. Army brat. KURTOSIS 🏳️🌈🏁
Charles Patterson @CharlesPattson
100K Followers 1K Following Designer, Founder & Maker Are you https://t.co/M4UBB8Y7cr yet?
kelin @kelin_online
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Arlan 👊🏾 @ArlanWasHere
116K Followers 18K Following Proud founder of @Backstage_Cap💯 + @HireRunner💜🏃🏾♀️, Author IT’S ABOUT DAMN TIME, Host YOUR FIRST MILLION, @QueerGermanGirl’s WIFEY😍@generalhospital fan📺
Jon | self.xyz 🌙 @umiworkshop
2K Followers 2K Following Head of Design at @selfxyz / formerly @celo / @plaid / @moment / @elevateapp / @consensys / @microsoft / @sunfoundation
kourge the jafnhár @kourge
1K Followers 2K Following burnt out eng; he/him; texan transplanted in WA then CA; English/中文/🇫🇷/🇯🇵; learning ייִדיש, español, 한국어; alt @a_wil_a_way
Dr. Calvin Liang @cal_liang
2K Followers 2K Following human-calvin interaction / assistant professor @nu_soc 🏳️🌈🍉🫶
The Jobfather ® 🇯... @TheJobfather__
89K Followers 6K Following Career Coach & Technical Recruiter | Rootin' For Everybody Black | Founder @JupiterHR_ Book a chat for your career with me: https://t.co/EhkrezyNTN
Nick Finck @nickf
46K Followers 1K Following User experience & product design leader, advisor, coach, + speaker. Founder of @CraftAndRigor. Loves pizza & D&D. Past: Meta, AWS, Deloitte, Ubermind. He/him.
rose @mochikuan
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Yifan Zhang @yifanzhang_
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Romain Huet @romainhuet
57K Followers 9K Following Head of Developer Experience @OpenAI, working on Codex and our API. Previously @Stripe. You can just build things!
Rourke McNamara @rourkem
731 Followers 546 Following Working on Codex @OpenAI. I like agents, dev tools, skiing, cycling, and AI demos that survive contact with real life. Opinions are my own.
eric provencher @pvncher
44K Followers 5K Following Codex DX @Openai | built @repoprompt | prev XR @unity
evt @jihoons0
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Faraz Prentice-Khan @farazKhan404
495 Followers 2K Following Head of Design + Design Engineer @koahlabs • Ex @speakeasydev, @twitter, @meta
Jared Palmer @jaredpalmer
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Peter Sellis @petersellis
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Irwan Bello @IrwanBello
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Residence @residenceco
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Peter Deng @pxd
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Noam Brown @polynoamial
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Maryanne Alhallak @malhalla06
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Tanay Jaipuria @tanayj
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bku @bryankuuu
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Luka Marr @LukaMarr
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Jason Kim @jasonkim1006
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Dan Ross @HYPD
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Takeshi Rhaenor Targa... @kezirim_zino
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Aoni W @Aoni_w
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Black Meat Market UK ... @blackmeatmktuk
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trailcam @Trail_Cams
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Sriram Venkiteswaran @SriramVenkit
89 Followers 1K Following Design @Meta 🇬🇧 | Design mentor @Adplist | prev Atlassian, Zenefits, CMU-MHCI. Opinions on Twitter are my own.
JEHTOMS 5.0 @JEH_TOMS
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rod: in progress @r0derb
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Kyle Shepherd @zoop_design
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