Brandon Leonardo @shiftb
Co-founder @instacart 🥕, Ex-@angellist brandonleonardo.com Silicon Valley Joined February 2007-
Tweets7K
-
Followers3K
-
Following1K
-
Likes3K
I just sequenced a human genome to 30× coverage entirely at home. As far as I know, this is the first time this has been done. I didn’t step foot in a lab once. Every step - from saliva collection, to running the sequencer - took place in a single room with a dining table + kitchenette. Six weeks ago, I had never done wet lab biology before. I used an Oxford Nanopore P2 Solo - the only commercially available sequencing device portable enough to do 30x human genome sequencing at home. Biggest takeaway - I could build something that combined software, hardware, and molecular biology far faster than I thought was possible. I can name >100 specific instances where AI helped me solve a technical problem that would previously have blocked me because I lacked access to a domain expert. For example: how do I save my sequencing run when my DNA extraction yield is 4x lower than I need it to be, and I have this limited set of reagents to hand? To make this work, I had to navigate multiple disciplines: - writing software to monitor sequencing runs and orchestrate remote GPU infra for basecalling - learning + executing 5 hour long molecular biology protocols - building a hardware device to quantify DNA concentration Apologies for the hyperbole, but I feel super lucky to be living in 2026. A few weeks ago I decided to sequence a human genome to 30x at home. Then I actually did it. And I did it really quickly.
Announcing: USVC AngelList exists to power the innovation economy. To date, we have powered $125 billion in assets, 25,000+ funds, and 13,000+ startups. Today, we’re opening it for retail access. @usvc_ is a regulated fund that holds stakes in promising private companies. There are no accreditation requirements and anyone can get started with as little as $500. Early portfolio includes xAI, Anthropic, OpenAI, Sierra, Vercel, Crusoe, and Legora. Own a stake in the companies defining the future. Learn more: usvc.com
Some personal news! Recently, I stepped back from the day-to-day at @Instacart to focus on investing full-time. I sat down with my friend @jaltma on Uncapped to talk about building Instacart and my philosophy on early-stage investing — check it out here!
For this episode of Uncapped I got to sit down with my close friend @Max, cofounder of Instacart 🥕 We talked about the key moments of Instacart...how it got started, critical wins, tough losses, competitive dynamics, earned insights, going public, and Instacart's future. Max
@cremieuxrecueil I thought people typically cycled off mots-c after 4-6 weeks to take a break. Is it still effective helping with adhd symptoms over longer timeframes?
Claiming my AI Agent "shiftb" on @kradleverse 🤖🎯 kradleverse.com/a/shiftb Code: bucket-VAH0
Most people send 10% as many text messages as they should. You should text your old friends when you think of them, you should text your new friends about the weather. You should text ex-girlfriends way more often. You should text mom more often but everyone agrees with that
As a mother, I’ve always felt at odds with @YouTube. The autoplay. The algorithm. The hyper-fast, overstimulating content. It’s everything I don’t want for my kids—but it's just SO freaking convenient. My 3 year-old son first started off watching real diggers and excavators work, often without any sound. Or airplanes taking off and landing. And he loved Ms Rachel. We thought we were being as mindful as we could, but no matter what content we showed him or how we transitioned to something else, he had a tantrum when we turned it off. At @playpokpok, we hear this same story from so many parents. That uneasy feeling of switching on YouTube, knowing the content might be more addictive than enriching. That’s why today feels like such a full-circle moment: we’re launching Studio Pok Pok —a calm, thoughtful channel for kids that puts education and creativity before clicks and chaos. From the beginning, our vision at Pok Pok has been to reimagine screen time for young children. What started as an award-winning app is now growing into something bigger: an entire brand wholeheartedly dedicated to mindful, non-addictive content that supports how kids really learn and play. We know that families are searching for something different—something they can feel good about handing over to their kids. This channel is for them. 🎥 Expect slow-paced, Montessori-inspired videos rooted in curiosity, not attention-grabbing gimmicks. 💡 Content that sparks imagination, not hyperactivity. ❤️ And a deep respect for childhood at every turn. If that sounds like a breath of fresh air, we hope you’ll check it out and be one of our first subscribers. We’re just getting started. 💫 youtube.com/@studiopokpok
Introducing Exponent, a highly capable programming agent. You can get early access today to start using Exponent's clean, developer-focused UX for any software engineering task from exploration to deployment.
Yes. Standard Time year round please.
We have confirmation #BlueGhost stuck the landing! Firefly just became the first commercial company in history to achieve a fully successful Moon landing. This small step on the Moon represents a giant leap in commercial exploration. Congratulations to the entire Firefly team, our mission partners, and our @NASA customers for this incredible feat that paves the way for future missions to the Moon and Mars. Standby for the first image, expected in the next 30 minutes! #BGM1
Congrats on the launch @camillevanhorne and Ashish!
Highstock is founded by @camillevanhorne and Ashish Sinha, who were pivotal builders during Instacart's earliest days. They saw the need to revolutionize this problem in commerce and applied their deep experience building marketplaces at scale. highstock.com/blog/introduci…
It’s not an AI agent unless it comes from the agentic region of Palo Alto. Otherwise, it’s just an AI-enabled workflow.
levels in tech: -junior eng -mid level eng -senior eng -staff eng -senior staff eng -principal eng -farmer
Jevons paradox strikes again! As AI gets more efficient and accessible, we will see its use skyrocket, turning it into a commodity we just can't get enough of. en.m.wikipedia.org/wiki/Jevons_pa…
Super excited to work with @OpenAI on today's Operator launch — it's the first consumer AI agent I've seen that's *actually* useful...for example, it can shop on @Instacart for you youtube.com/watch?v=CSE77w…
Many product managers don't bind their ambitions with humility. They don't work on small things at all. So, small things get worse and they don't learn how to fix problems. They, therefore, fail at fixing big problems and big things also get worse. This is why it is such a bad idea to tell PMs to avoid fixing broken windows. If you are a junior PM. Just fix bugs. Start there. Fix things that are obviously broken. Do not allow yourself to even think about "strategy". Just wake up every day and fix small things, every day. This gives you at bats learnings how to do things and it will ready you for the moment when you need to fix bigger things.
pgvector is insane. i don't understand why vector databases exist.
Garry Tan @garrytan
868K Followers 6K Following President & CEO @ycombinator —Founder @garryslist—Creator of GStack & GBrain—designer/engineer who helps founders—SF Dem accelerating the boom loop
Alexis Ohanian 🗽 @alexisohanian
722K Followers 8K Following Business Dad: @SevenSevenSix ♻️ @776Foundation Owner 🏃🏿♀️@athlos 🦁 @ChelseaFCW ⛳ @weareLAGC 🏌🏾♀️ @weareLAGCW 🪽 @weareangelcity 🏐 @lovblosangeles
Y Combinator @ycombinator
1.6M Followers 364 Following We help founders make something people want. Subscribe to our newsletter: https://t.co/sjqjxxBeLc
Turner Novak 🍌🧢 @TurnerNovak
207K Followers 3K Following Mostly satire. Serious stuff: investing @BananaCap_ and @ThePeelPod (sign-up for emails below)
VCs Congratulating Th... @VCBrags
286K Followers 5K Following They're adding value™ And they're very proud of it. @BragsVentures
Maksim Golivkin @MaksimGolivkin
1K Followers 797 Following AI intern/co-founder at Empower Sleep Ex:Eng Manager and Growth engineer (Instacart)
Scott Holloway @ScottBoehme
1K Followers 1K Following Managing Partner @StartingLineVC. Entrepreneur, builder, investor.
Instacart @Instacart
69K Followers 1K Following If you’re reading this hi 🥕 find us @InstacartHelp for support
Katelyn Gleason @katgleason
31K Followers 965 Following founder and ceo @ eligible, yc s12. early at drc (yc w11, acquired)
Josh Elman @joshelman
161K Followers 3K Following I have been very lucky to work on or invest in many products I use every day including this one when it had a different name.
Dan Siroker @dsiroker
38K Followers 5K Following Founded and sold @Optimizely and @LimitlessAI. Created products considered impossible and made them inevitable.
Fareed Mosavat @far33d
13K Followers 2K Following Visiting Partner, @a16z speedrun. Did some important-ish stuff at Reforge, Slack, Instacart, Runkeeper, Zynga, and Pixar.
Robert Scoble @Scobleizer
585K Followers 50K Following San Francisco/Silicon Valley AI | Robots, holodecks, BCIs, analysis of new things | Ex-Microsoft, Rackspace, Fast Company | Wrote eight books about the future.
Rushabh Doshi @rushabhd
290 Followers 415 Following Excited about something new. Passionate about all things football ⚽️.
Global SmallTalk @GlobalSmallTalk
3K Followers 512 Following Custom-built websites and SaaS platforms designed to attract, engage and convert the right people. No shortcuts. Just people who care.
AYUSH @zkayush
61 Followers 382 Following Exploring the future of onchain dapps and interactive systems. Building, breaking, rebuilding.
Umair Syed @itsumairsyed
24 Followers 81 Following CETO @ Algorithm - helping startups & businesses scale with on demand AI & full-stack dev teams.
K @DomainNameshub
2K Followers 462 Following https://t.co/86l7FEjxIq , https://t.co/kKv2P6mfLw https://t.co/pChUCKLx1g , https://t.co/8wFTNY20Ao https://t.co/AaP6EazwMI , https://t.co/JWeQ1K4CzS https://t.co/cYtUUrtwjc , https://t.co/3tpIrK3HHj
Utkarsh Jaiswal @utkarshJais
8 Followers 120 Following As an aspiring web developer, I am passionate about coding and creating solutions that improve people's lives on the internet.
ハングリィ・ラ... @hachi8833
3K Followers 7K Following Tech-writer/translator/ at https://t.co/gw3SEIn2Xx. Co-authors of https://t.co/GPabyiw95t and https://t.co/o71NrI7wyq, RubyKaja, AI context engineering expert
John Dagdelen @jmdagdelen
6K Followers 2K Following Founder & CEO of @fluid_xr. Prev. llms for scientific discovery, PhD in Materials Science + ML from UC Berkeley
Eli Brown @iEchoic
960 Followers 1K Following Visiting partner at @ycombinator • founder at @teamguilded • engineer at @instagram, @xbox, @facebook, @roblox • angel investor • Starcraft II grandmaster
Ankit Sanghvi @sanghvian
803 Followers 1K Following Building self-evolving AI agents for banks | co-founder @riverline_ai | CMU'24 | IITM'23 | https://t.co/pd448hhTd5
Yannic @Yannic090
4 Followers 178 Following
Peter Lin @ptrln
91 Followers 127 Following Builder/Engineer. Former: Principal Software Engineer at @Instacart
Kavya @motherofpathos
2K Followers 945 Following All things outdoorsy, tech for good & long form content makes me happy. Lived the 0-1 life in early stage start-ups.
Eric @eptmpa
7K Followers 1K Following building multi material resin printers https://t.co/hgzklKwGs3 | @fdotinc blueprint
Bax | Mobile App Deve... @techbaxdev
79 Followers 553 Following Freelance Mobile App Developer (iOS • Android • Apple TV • Fire TV) AI-powered apps & fast MVPs for founders 50+ apps shipped | DMs open
Avi Roy @agingroy
10K Followers 3K Following Biomed Scientist in #longevity. Mentor & Investor in Health startups. Past CTO @BioVivaScience ,Researcher @CASMIORG ,Lead @oxfordscisoc @NewsInLongevity ,BGRF
Caiman @caiman_h
3 Followers 96 Following
Sourcetable @SourcetableApp
233 Followers 60 Following The AI spreadsheet & data analyst. 10x your productivity!
Lina Colucci @lina_colucci
10K Followers 3K Following Giving voice agents a face @LemonSliceAI (YC W24) - we're hiring! 2x Founder. Alum: @MIT @Harvard @DukeU 🇧🇷→🇨🇦→🇺🇸
Lyndel Soon @lyndelsoon
59 Followers 287 Following Retired. Can you spot me in my home and my baby on my lap within 2 seconds?
No Signal..... @MayankB41842470
20 Followers 139 Following
Spencer Shulem @Spshulem
9K Followers 7K Following @ https://t.co/v9uBX1hq51 - AI for Product Teams, used by 28k - iterate 50% faster. Angel. Prev. Exec @ 🦄 & 🐴 & CEO @ WeDo. Playing @Warcraft.
Ernesto Cambustón @erneestoc
218 Followers 753 Following
Chris Faulkner @chrisfaulkner
5K Followers 3K Following cultural anthropologist = political consultant
kemal el moujahid @kelmoujahid
5K Followers 666 Following Putting frontier AI in simulations @KradleAI. Previously CPO @ChainlinkLabs, @TensorFlow Lead, @Messenger platform Lead, Founder @Liveminutes.
saad sufyan @saadsufyan
180 Followers 919 Following I help startups and nonprofit CEOs develop technology roadmaps & solutions so that they can succeed because this world needs their vision & leadership!
Jayant Raj @jayantr7
883 Followers 7K Following Building towards an HMLV custom packaging supplier @ https://t.co/q4cbGtz7q4 Life, liberty, and the pursuit of happiness.
Derek Cedarbaum @DerekCedarbaum
293 Followers 7K Following Product @ Red 6, #2 FTE | Built the world's first in-air augmented reality system for fighter pilots | 🇺🇸
💴L👍ogic_B💬ot @JeffreyBri55063
1 Followers 95 Following
Ryan Carson @ryancarson
183K Followers 16K Following Dad, Dev, CEO, 4x Founder. Building @HelloUntangle
Behzad Haghgoo @Behzadhaghgoo
659 Followers 500 Following Building something new | prev: AI @Roblox, co-founder @tymcollab (acq), @stanford
shiv kv @ztobotua
393 Followers 2K Following product manager @ Meta AI training l ex-Uber, Aurora | Kellogg MBA | built cool products - EVs, AVs, Smart Glasses, AI / ML Infra l always learning!
Philip Harding @hardingphilip
580 Followers 2K Following Running for US Congress in VA 🇺🇸 America made by US. Helping people do what they were made to do. Jesus.✖️ Businessman, Husband, Father, @harvard alum ^2
Nicolò Magnante (YC ... @nicolomagnante
2K Followers 3K Following life goals: 1 - build a Decacorn 2 - lead Italy to top 5 global GDP 3 - win an Oscar
Paul Graham @paulg
3.2M Followers 791 Following
Marc Andreessen 🇺�... @pmarca
3.5M Followers 31K Following You’re not talking to someone who woke up a loser. That loser attitude, that loser premise makes no sense to me.
Aaron Levie @levie
2.8M Followers 790 Following ceo @box - your business lives in content. unleash it with AI
Garry Tan @garrytan
868K Followers 6K Following President & CEO @ycombinator —Founder @garryslist—Creator of GStack & GBrain—designer/engineer who helps founders—SF Dem accelerating the boom loop
Nikita Bier @nikitabier
1.1M Followers 2K Following head of product @x, advisor @solana, venture partner @lightspeedvp, ex-founder @gasappteam (acq by discord), ex-founder @thetbhapp (acq by facebook)
Gergely Orosz @GergelyOrosz
337K Followers 3K Following Writing @Pragmatic_Eng, the #1 software engineering newsletter on Substack. Author of @EngGuidebook. Formerly Uber & Skype.
Antonio García Mart�... @antoniogm
224K Followers 16K Following Director, @base growth. Founder @spindl_xyz (acq. @coinbase). Wrote bestseller 'Chaos Monkeys'. גם זה יעבור 🇺🇸🇪🇸
Alexis Ohanian 🗽 @alexisohanian
722K Followers 8K Following Business Dad: @SevenSevenSix ♻️ @776Foundation Owner 🏃🏿♀️@athlos 🦁 @ChelseaFCW ⛳ @weareLAGC 🏌🏾♀️ @weareLAGCW 🪽 @weareangelcity 🏐 @lovblosangeles
Patrick McKenzie @patio11
195K Followers 807 Following I work for the Internet and am an advisor to @stripe. These are my personal opinions unless otherwise noted.
tobi lutke @tobi
472K Followers 2K Following Shopify CEO by day, Dad in evening, hacker at night, Aspiring comprehensivist. + qmd !
Y Combinator @ycombinator
1.6M Followers 364 Following We help founders make something people want. Subscribe to our newsletter: https://t.co/sjqjxxBeLc
Turner Novak 🍌🧢 @TurnerNovak
207K Followers 3K Following Mostly satire. Serious stuff: investing @BananaCap_ and @ThePeelPod (sign-up for emails below)
CJ Zafir @cjzafir
60K Followers 979 Following I fine-tune small language models (SLMs) and beat large language models (LLMs)
The Real Guardrail Gu... @theguardrailguy
70K Followers 264 Following National Highway Safety Advocate/ Orphan Advocate Robbing America's Cruel Streets of Future Victims of Guardrail Failures
NOBUNAGA🇯🇵🏯_... @japan_nobunaga
176K Followers 0 Following Honest perspectives on Japan — culture, traditions, daily life. 本音で語る日本。守るべき文化と伝統。
Bill Lennon @blennon_
5K Followers 1K Following CEO @heyollieai the most powerful personal assistant for families, backed by Khosla Ventures | AI PhD | prev. CEO of Groundwork (acquired).
Saronic @Saronic
16K Followers 154 Following Saronic is building cutting-edge autonomous surface vessels that enable maritime security and domain awareness by combining premier hardware, software and AI.
Brilliant.org @brilliantorg
40K Followers 172 Following Learn by doing. Math, computer science, and science.
Sue @suekhim
15K Followers 342 Following Co-founder & CEO of @brilliantorg. Working at the frontier of human + AI learning design.
Nitin Khanna @_nitin_khanna
132 Followers 276 Following Dad | Innovator | Author | Investor | Advisor
Arc Institute @arcinstitute
44K Followers 67 Following A full-stack institute for AI and biology research.
Patrick Hsu @pdhsu
69K Followers 3K Following @ArcInstitute co-founder, @Stanford professor, @ThriveCapital investor | biology and ML research | 🇨🇦 prev @harvard @broadinstitute, Fast Grants
John Dagdelen @jmdagdelen
6K Followers 2K Following Founder & CEO of @fluid_xr. Prev. llms for scientific discovery, PhD in Materials Science + ML from UC Berkeley
Scott Brady @ScottBradyPA
28K Followers 3K Following Executive Director @WHFraudTF, Trump US Attorney, 8th gen western PA, Proud Yinzer, Dad of 5. Col. 3:23
Needle @NeedleTools
5K Followers 149 Following 🌵Creating for the 3D web made easy | https://t.co/43ay45A1TP 📦 Mirror https://t.co/dwyy9LaUeZ https://t.co/xjqoxhsy97 + https://t.co/v5KYFCZVse
Arseny Kapoulkine �... @zeuxcg
13K Followers 50 Following Independent. Previously: TF@Roblox meshoptimizer, pugixml, volk, calm, niagara, qgrep, Luau https://t.co/PTS70xVAYe
Dan Shipper 📧 @danshipper
110K Followers 2K Following ceo @every | the only subscription you need to stay at the edge of AI
Alberto Hojel @AlbyHojel
6K Followers 4K Following dreams @roblox // uc berkeley ‘24 // YC w25. views my own
Jim Belosic (SendCutS... @jimbelosic
20K Followers 934 Following ceo @sendcutsend - custom sheet metal and CNC parts, fast
Greg Koenig @gak_pdx
16K Followers 1K Following Follow me on Twitter! You'll go where I go, defile what I defile, eat who I eat. He/Supreme Allied Machine Commander
Brandon Ballinger @bballinger
3K Followers 2K Following Building @EmpiricalHlth - don't die of heart disease. Previously @AppCardiogram, @GetSift, @HealthCareGov rescue team, @BrexHQ, & @Google AI.
White House Task Forc... @WHFraudTF
210K Followers 47 Following Ending fraud against the American taxpayer.
CasimirInc @CasimirInc
5K Followers 17 Following Casimir harvests energy from all around us to provide unlimited power. Our chips will keep devices running without batteries, cords, or charging.
Andrea Intg. @andreintg
6K Followers 2K Following sketchy game dev / tools - cofounder @unbound_io with @rianflo made @clayxels, @nauticrawl , and lots of failed stuff. ex DreamWorks, MPC VFX, Lionhead Studios
Unbound @unbound_io
5K Followers 5 Following 3D Reimagined. Join us on Discord: https://t.co/dh4VaYjGvr #madeWithUnbound
M.A. Franklin @FoundationDads
68K Followers 365 Following Author. Father. Teacher. Essays, reviews, and fiction at https://t.co/9a0sindeLW. Helping men become better fathers at https://t.co/YOibUIkrDS.
Henry Dowling @henrytdowling
431 Followers 245 Following CTO @joinstashai - knowledge base that your coding agents love to use prev @southpkcommons @bubble @harvard
Tinker @tinkerapi
8K Followers 1 Following I tink, therefore I am. Post-training API by @thinkymachines
Thinking Machines @thinkymachines
154K Followers 1 Following Thinking, beeping, and booping. @tinkerapi
Preethi Kasireddy @iam_preethi
290K Followers 540 Following Founder. Mom x 3. Building Ferta (https://t.co/ANo3MHtm7M). I got pregnant without IVF when doctors told me it was impossible. Now I help other women do the same.
Alex Corrino @AlexCorrino
7K Followers 1K Following Your favorite trader's favorite trader. Hedge Fund CIO. I write https://t.co/gavNEURiEe Not Financial Advice!
MacKenzie Price @mackenzieprice
12K Followers 139 Following Co-founder, Alpha School and 2HrLearning Transforming K12 | Improving outcomes with 1:1 AI-driven academics and critical life skills for a future-ready next gen
Alberto @taiuti
5K Followers 976 Following CEO & co-founder @reactorworld - prev 3D @skydioHQ, cofounder & CTO @lumalabsai, @apple on VisionPro - super hardcore multi theft auto san andreas player
reactor @reactorworld
4K Followers 1 Following Building the developer platform for real-time world models.
Subquadratic @subquadratic
20K Followers 938 Following AI lab leading the subquadratic LLM revolution.
Aleksandr Gampel @AGampel1
6K Followers 971 Following Hi. Cuby is setting the stage to commercialize a network of hundreds of Mobile Micro-Factories (MMFs) erected on or near construction sites.
Lomez @L0m3z
125K Followers 3K Following Publishing Company: https://t.co/W9k19FbtKr Podcast: Rufo & Lomez with @theblaze https://t.co/krCB6Ix6bN Writing: https://t.co/3NQ1Q9FbDT
Alexander Whedon @alex_whedon
25K Followers 59 Following Building better algorithms. Co-Founder at @subquadratic
Eric @eptmpa
7K Followers 1K Following building multi material resin printers https://t.co/hgzklKwGs3 | @fdotinc blueprint
Gaurab Chakrabarti @Gaurab
39K Followers 814 Following CEO @Solugen | MD/PhD building the modern chemical industry | Making molecules that power humanity | Takes on manufacturing, energy, molecules, and biology















































