Joseph Semrai @josephsemrai
Building Context | Thiel Fellow, Stanford context.ai San Francisco, CA Joined June 2017-
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it's like clippy for presentations
Thrilled to share that I’ve joined @reflection_ai! We’re building superintelligent autonomous systems by co-designing research and product. Today, we’re launching Asimov. As AI benchmarks saturate, evaluation will increasingly live inside real-world products that are…
Thrilled to share that I’ve joined @reflection_ai! We’re building superintelligent autonomous systems by co-designing research and product. Today, we’re launching Asimov. As AI benchmarks saturate, evaluation will increasingly live inside real-world products that are…
Context gets $11M to build an AI-powered office suite | TechCrunch techcrunch.com/2025/05/28/con…
You can staple AI to existing productivity tools. But like any other technical revolution, applications built natively to harness and exploit them dominate. Excited to team up with @josephsemrai and his stellar team at Context Autopilot: tomorrow’s AI-native productivity…
Last year, we invested in Cognichip: what we expect to be a generational semiconductor company by making chip design as simple and accessible as vibe coding. They came out of stealth today with a vision for how we will design chips in the future:
Human Behavior (@humanbehaviorai) is building an AI that watches actual customers using your product, through session replays, to help you understand why they stay, convert, or leave. ycombinator.com/launches/NU8-h… Congrats on the launch, @OfficialAmogh, @skyguy_skyguy, and…
Willow (@WillowVoiceAI) is the future of voice-first computing. Thousands of people have replaced their keyboards with Willow to get emails, docs, and AI prompting workflows done 4x faster. Congrats on the launch, @_allanguo and @LiuLawrence45!
The nature of AI compute demand is changing. Demand is consolidating with hyperscalers. Custom chips are becoming more competitive. Scaling increases returns to vertical integration. Distributed training will be the new norm. The Future of Compute: NVIDIA's Crown is Slipping…
Mercor is solving global labor matching with models that understand human ability. @mercor_ai raised a $30M Series A at a $250M valuation, led by @victoralazarte and @bgurley at @benchmark, with participation from @peterthiel, @jack, @adamdangelo, and @LHSummers.
Today is a bad, bad day to be a language model. Today, we announce the Haize Labs manifesto. @haizelabs haizes (automatically red-teams) AI systems to preemptively discover and eliminate any failure mode We showcase below one particular application of haizing: jailbreaking the…
Introducing Gatekeep, the text-to-video AI that transforms your questions into engaging educational explainer videos. Now available on web and Discord. Get started at gatekeep.ai
Excited to announce that Mercor matched over 500 people with jobs in the last month alone, supplying talent to leading AI labs. forbes.com/sites/johnwern…
inference on your head mistral 7b (4bit quantized) running locally on apple vision pro
stanford students meet spatial computing w/ vision pro
Today, we're announcing $3.6M in funding and the launch of our platform, which uses AI to assess and match talent with companies. Our round is led by @generalcatalyst and includes participation from @ScottDSandell (CEO of NEA), @Soma_Capital, @Link_Ventures, and others.

Silas Alberti @silasalberti
9K Followers 533 Following vibing with devin @cognition | ai phd student @stanford | prev: @janestreetgroup, @googledeepmind
andrew gao @itsandrewgao
39K Followers 2K Following @cognition @stanford; prev @sequoia @LangChainAI @pika_labs @nomic_ai; Z Fellow 🇺🇸; views my own
Cory Levy @cory
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Roope Rainisto @rainisto
41K Followers 2K Following AI Artist: "LIWA" + more. WME represented. Designer, creator, photographer, screenwriter, endless learner. Creating @beatbanditai . Life is short, Just Do It!
Siddharth Sharma @siddrrsh
3K Followers 3K Following CS @ Stanford. Building @mlfoundry. Prev @AWS, @Lux_Capital, @UniofOxford
david @davidtsong
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Barsee 🐶 @heyBarsee
275K Followers 862 Following Daily tweets on the latest AI and Tech developments to stay ahead of the curve | Founder of https://t.co/bpf7Dytcqj
Yohei @yoheinakajima
108K Followers 10K Following VC by day @untappedvc, builder by night: @babyagi_, @pippinlovesyou @pixelbeastsnft. Build-in-public log: https://t.co/UdHHGbZba5
hau @bryanhpchiang
7K Followers 999 Following
Delip Rao e/σ @deliprao
61K Followers 5K Following Busy inventing the shipwreck. @Penn. Past: @johnshopkins, @UCSC, @Amazon, @Twitter ||Art: #NLProc, Vision, Speech, #DeepLearning || Life: 道元, improv, running 🌈
Nathan Benaich @nathanbenaich
61K Followers 34K Following solo member of investment staff @airstreet @airstreetpress @stateofaireport @raais
DIQIgirl @DiqIgirl12813
0 Followers 15 Following
Uv Sundrani @yuvansundrani
132 Followers 155 Following Building https://t.co/WICaNbG2wM | AI QA Engineer for mobile | Backed by @ycombinator
Kevin Xu @imkevinxu
7K Followers 3K Following Building @AfterHour_HQ. Portfolio: $35K (2020) ➤ $10,551,982 (9/3/25). Prev: Stripe, YouTube, YC, Stanford
Wenhe Z @wenhe_z
0 Followers 482 Following
Kuber @Kuberwastaken
307 Followers 442 Following 18 | Building @PolythinkAI, TREAT | @trydatabuddy ambassador | prev @perplexity_ai @chase @htmx_org @nasdaily | I Build (and break) stuff
Matt Tengtrakool @MattTtkool
828 Followers 676 Following Founder https://t.co/B3bxL4FQvN (YC W24), @harvard
Gabriel RR @Gabriel8986619
12 Followers 68 Following
云创兽Ai @Uhofer722186
1 Followers 109 Following 📈 finance star all in on wildly tracking Nasdaq trends! passionate about trends. DM me for NYSE moves! 🔥 #ValueInvesting
@LeoNYC @axpny
277 Followers 6K Following
freakline @freakline1
17 Followers 409 Following
CorneliaGeoffrey @2kBcC7MzADa5R2a
35 Followers 2K Following
Locar @Locar2911
34 Followers 2K Following
nomnompowa @nomnompowa
45 Followers 2K Following
onyinye_favourr | con... @onyinye_favourr
413 Followers 293 Following content marketer• Creative soul. Brand Storyteller, 6'1 of pure energy✨
🕊️ OfficeX App @officexapp
798 Followers 349 Following 🎖️ Anonymous OfficeX - Documents, Spreadsheets & Storage 🌴 Where Freedom Works | 100% Open Source 🕊️
Juan De La Ossa @jdelaossa
89 Followers 271 Following Founder & CEO, https://t.co/c8TzvNbnPj | Framer websites for fast-moving founders
Tom Paulus @tomtwituje
163 Followers 136 Following Turning insights into experiences 💡 Lead designer @ Bell&Hurry 💻 Author of UX Polopate
seb @sebsadface
1K Followers 998 Following eng @psdnai | cs @siebelschool | ex @storyprotocol + @fhenixio + @udubblockchain prez | @uwcse alum
Chris Taylor @ber62996
55 Followers 118 Following
Vincent Weisser @vincentweisser
24K Followers 4K Following @primeintellect ceo / open superintelligence + infra
Aviral Agarwal @AviralAgarwal0
7 Followers 174 Following 19 | @utexasmccombs | incoming @bcg | prev. product @servicenow
Yr Akito @yr_akitox
0 Followers 3 Following
JMBP @JMBPMS
53 Followers 4K Following
Boss Owe @lily700000000
172 Followers 3K Following
Mason Free @mason_free_0205
31 Followers 185 Following
Ibrahim Sheikh @ibrahim0sheikh
90 Followers 704 Following
Peter Aly @peteraly_
148 Followers 4K Following
Matthew Wong @mlcwong
3K Followers 4K Following
Alex @alexx34_
795 Followers 2K Following Full-stack engineer with a focus on scalable systems and crypto infrastructure | grad @ucberkeley | prev @chainlink @kalshi
Khoa Duong @virtualkhoa
194 Followers 589 Following 17 @autumnpricing | prev https://t.co/hiNnjjrx8e @usehaven investment banking
Sierra Nielsen @SierraNielsen
8K Followers 5K Following Health Entrepreneur + @livingmaka Advisor. Ex Ent. exec. Ever curious soul with a passion for learning and connecting with good humans.
Samriddha Roy @SamriddhaRoy21
23 Followers 4K Following
Faisal @Just_FaisalI
204 Followers 288 Following
Fbio @Fbio83026755802
1 Followers 3K Following
Silas Alberti @silasalberti
9K Followers 533 Following vibing with devin @cognition | ai phd student @stanford | prev: @janestreetgroup, @googledeepmind
@levelsio @levelsio
721K Followers 2K Following 📸https://t.co/lAyoqmSBRX $145K/m 🛰https://t.co/ZHSvI2wjyW $40K/m 🏡https://t.co/1oqUgfD6CZ $35K/m 🌍https://t.co/UXK5AFqCaQ $14K/m 👙https://t.co/RyXpqGuFM3 $14K/m 💾https://t.co/M1hEUBAynC $6K/m
Ben Tossell @bentossell
164K Followers 433 Following twin dad || tinkerer/investor https://t.co/iLpIJT2Vlg || founder makerpad (acq by zapier)
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.
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.
George Hotz 🌑 @realGeorgeHotz
300K Followers 204 Following President @comma_ai. Founder @__tinygrad__
andrew gao @itsandrewgao
39K Followers 2K Following @cognition @stanford; prev @sequoia @LangChainAI @pika_labs @nomic_ai; Z Fellow 🇺🇸; views my own
Daniel Gross @danielgross
119K Followers 0 Following
Cory Levy @cory
35K Followers 4K Following entrepreneur and early stage investor | Z Fellows @zfellows
Nikita Bier @nikitabier
582K Followers 2K Following head of product @x, advisor @solana, venture partner @lightspeedvp, ex-founder @gasappteam (acq by discord), ex-founder @thetbhapp (acq by facebook)
Siddharth Sharma @siddrrsh
3K Followers 3K Following CS @ Stanford. Building @mlfoundry. Prev @AWS, @Lux_Capital, @UniofOxford
david @davidtsong
3K Followers 722 Following
Product Hunt 😸 @ProductHunt
555K Followers 528 Following The place to find your new favorite product 🚀 Get new products in your inbox: https://t.co/uLj6s6LIgw
Jerry Liu @jerryjliu0
65K Followers 1K Following co-founder/CEO @llama_index Careers: https://t.co/EUnMNmbCtx Enterprise: https://t.co/Ht5jwxSrQB
Harrison Chase @hwchase17
79K Followers 472 Following @LangChainAI, previously @robusthq @kensho MLOps ∪ Generative AI ∪ sports analytics
hau @bryanhpchiang
7K Followers 999 Following
alek.sgn @alek_sgn
667 Followers 20 Following Art direction | Motion design | Product Visualisation Working at @SkaleSolutions
Ayush Soni @ayushsoni_io
31K Followers 5K Following founder + creative director @ https://t.co/DeIlJI5u9j an experimental brand + web studio
Logan Kilpatrick @OfficialLoganK
209K Followers 2K Following Lead product for @GoogleAIStudio + the Gemini API. My views!
Tamer Oukour @tameroukour_
12K Followers 384 Following Marketing & Brand Designer ◦ Designs that grab attention & stop the scroll
Tejas Bhakta @tejasybhakta
787 Followers 618 Following tokens dealer escaping the permanent underclass. solo founder at @morphllm (YC S23), former ML eng @Tesla. weird nerd. also built https://t.co/INKbPKMNUe
Mark Vassilevskiy @MarkKnd
24K Followers 1K Following 19 / Premium design partner for silicon valley startups / clients: @boltdotnew @clickup @whopio
Superscale @superscale_ai
386 Followers 33 Following Launch marketing in minutes. Prompt AI UGC videos and slideshows for your TikTok and Instagram organic and paid marketing. Get more customers for your products.
Deedy @deedydas
205K Followers 5K Following VC at @MenloVentures. Formerly founding team @glean, @Google Search. @Cornell CS. Tweets about tech, immigration, India, fitness and search.
Sam Mielke @sam_mielke
2K Followers 862 Following
Roy @im_roy_lee
154K Followers 2K Following CEO at Cluely (@cluely) | Kicked out of Columbia and Harvard | i am the man who killed leetcode | @zfellows
Ric Burton @_ricburton
2K Followers 468 Following Searching for magical founders to help. Exploring the frontier & kiting incredible locations. Formerly posting as @ricburton.
Ben South @bnj
19K Followers 1K Following building @variantui • past: vp @postmates, founder @sonar (acq) and @bold (acq)
Siya 🍯 @siyabuilt
10K Followers 1K Following 19 / Prev. exit GenPPT (45k users) / Building https://t.co/Nry2StRSy7
Jay Khemchandani @jaykhem_
165 Followers 169 Following
amogh @OfficialAmogh
7K Followers 7K Following co-founder @humanbehaviorai (yc x25) // prev stanford cs
Alfred Wahlforss @itsalfredw
8K Followers 734 Following co-founder @ListenLabs, https://t.co/5ImQPAoyCD
Gianfranco.io // @degenfranco
289 Followers 268 Following First Check Investor @OVO. Prev - @Stanford, @McKinsey, @GoldmanSachs
Emir Karabeg @karabegemir
3K Followers 336 Following ceo @simdotai, build agent workflows (https://t.co/Wy3gDa5hGk)
Calvin Laughlin @laughlincalvin
646 Followers 514 Following Member of Technical Staff @contextsuite ||| @stanford CS
ManusAI @ManusAI_HQ
204K Followers 25 Following Manus is the general AI agent that bridges minds and actions: it doesn't just think, it delivers results. Download our app: https://t.co/XSfjRhjdgo
Karun Kaushik @karunkaushik_
6K Followers 347 Following Co-founder @GetDelve (AI-native compliance) | YC W24 | @ZFellows | Prod | prev. AI @MIT
Pri @Pri_promo
6K Followers 119 Following ✦ Creating world-class saas product videos ✦ @beehiiv & 80+ (early to late stage) startups ✦ Work with me → https://t.co/r4ynMort15
Tesvara Jiang 🐶 @tesvarajiang
1K Followers 931 Following pm @eigenlayer, vp @stanfordcrypto, studying cs @stanford | prev @amazon
Shahin Farshchi @Farshchi
10K Followers 945 Following @lux_capital, invested @zoox, @planet, @relativityspace, @vardaspace, @epsilon3inc, @nervanasys, @mosaicml, @CovariantAI, @goformic, $AEVA, Dad/Bear/Bruin/Pilot
Sophia Andren @razorbelle
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Vraj Shah @shahvraj99
184 Followers 1K Following Designer | ex @tryprofound, @contextsuite , @nsavecom & Stealth
Earth @EarthKoed
584 Followers 259 Following
Andrew Tan @andrewztan
6K Followers 596 Following Founding Partner @thehumans | Founder @joinnovaco (acq.) | TLDR AI newsletter (900,000+ readers) | CS @Stanford @UCBerkeley | Prev @GoogleAI @citadel @sequoia
Niko Bonatsos @bonatsos
19K Followers 2K Following Obsessed with technical founders building products for themselves. Talent is universal, while opportunity is not. Early stage VC.
Nik Shevchenko @kodjima33
24K Followers 499 Following @omidotme Looking for cofounder(s) https://t.co/hjcgg73Ee5