Tagged: yc
30 results
E2B
E2B is an open-source cloud runtime that gives AI agents secure, isolated environments to execute code and use real-world tools. Built on Firecracker microVMs that boot in under 200 milliseconds, E2B lets developers and enterprises spin up disposable Linux sandboxes where AI-generated code runs without touching production systems. Founded in 2023 by Czech engineers Vasek Mlejnsky and Tomas Valenta, the company raised a $21M Series A led by Insight Partners in July 2025 and reports adoption across roughly 88% of the Fortune 100, including Perplexity, Hugging Face, Groq and Manus.
ProjectX
ProjectX is a San Francisco-based, Y Combinator-backed startup building Infinity (InfinityOS) - a cloud-native, distributed operating system where every app runs on its own independent compute and GPU inside a single browser tab. Designed for the multi-agent, GPU-native era, it lets humans and AI agents run Blender, Unreal, Isaac Sim, DaVinci, and VS Code side-by-side in one shared workspace.
Artie
Artie is a San Francisco-based, fully managed real-time data streaming platform that uses change data capture (CDC) and log-based replication to move production data across databases, warehouses, search systems, and vector stores with sub-minute latency and zero pipeline maintenance. Founded in 2023 by Jacqueline Cheong and Robin Tang and backed by Y Combinator, Artie pitches streaming-first data movement as the default for AI-era systems, replacing brittle batch ETL and self-managed Kafka.
Float Health
Float Health runs an on-demand marketplace that dispatches vetted registered nurses to patients' homes for specialty medication infusions. The San Francisco startup pairs an AI-powered scheduling platform with a gig-style nurse network, and acts as the staffing backbone for specialty pharmacies like CVS, Optum, Walgreens, Kroger and Option Care Health.
Andrew Antos
Andrew Antos is the Czech-born Founder and CEO of Klarity, a San Francisco-based AI platform that automates document-intensive workflows for enterprise finance and accounting teams. Born in Brno one year before communism fell, he grew up in a family of scientists, studied law in Europe, then pivoted to entrepreneurship after Harvard Law School and an MIT startup course. He co-founded Klarity in 2017 with Nischal Nadhamuni, raised $90M+ from Y Combinator, Scale Venture Partners, Nat Friedman, and Daniel Gross, and counts DoorDash, Zoom, Cloudflare, and OpenAI among his customers. Klarity's AI platform achieves 82%+ pass-through rates on contract and invoice processing, reduces month-end close by 2-3 days, and automates up to 87% of manual finance work.
Chase Kim
Chase Kim is a startup founder who spent years deep inside Sendbird, the messaging infrastructure company powering conversations for DoorDash, Reddit, and Hinge, where he led the forward deployment team during Sendbird's critical 2024 pivot into AI agents for customer experience. In 2026, he co-founded Light Anchor (YC P26) with Sangha Park to build fully autonomous e-commerce brands run entirely by AI agents, betting that the future of consumer business is capped by compute, not headcount.
David Hsu
David Hsu is the founder and CEO of Retool, a San Francisco-based developer tools company that lets engineers build internal software through a drag-and-drop interface. He founded Retool in 2017 at age 25 after pivoting from a failed fintech startup (Cashew/Oatpay) where he kept having to build internal tools from scratch. A Computer Science and Philosophy graduate from Oxford, Hsu grew Retool to $2M ARR before public launch, achieved a $3.2B valuation by 2022 with $140M in total funding from Sequoia Capital and notable angels including the Stripe founders, and now serves over 10,000 companies including Amazon, Netflix, OpenAI, and the US Army.
Julián Ríos Cantú
Julián Ríos Cantú is the co-founder and CEO of Eden, the leading cloud-native radiology operating system in Latin America. Motivated by his mother's battle with breast cancer, he began building health technology at age 16, went on to become the youngest-ever winner of the Global Student Entrepreneur Awards at 18, earned a Thiel Fellowship, and went through Y Combinator in 2018. Today, Eden processes over 13 million diagnostic studies annually across 18 countries for more than 2,200 medical institutions, backed by Sierra Ventures, Khosla Ventures, Kaszek, and notable angel investors including Leonardo DiCaprio, Ashton Kutcher, and Tony Robbins.
Kevin Liu
Kevin Liu is a licensed CPA and co-founder of Numeral, the AI-native sales tax compliance platform backed by $57M in funding. Drawing on his Big 4 accounting background at KPMG and hands-on experience building 7- and 8-figure ecommerce brands, Liu brought the tax expertise needed to automate the full sales tax lifecycle - from registration to filing - for thousands of ecommerce and SaaS businesses across 70+ countries.
Matt Schulman
Matt Schulman is the Founder and CEO of Pave, the AI-powered compensation platform he built after watching coworkers at Facebook struggle to understand their own stock options. Starting with a cold email to 200 executives in 2019 (59 replied within 24 hours), he grew Pave into a $1.6 billion company with 3,500+ customers and $471M in total funding - making it the largest compensation data provider for private companies in the world after acquiring Option Impact from Morgan Stanley in 2022.
Rainforest QA
Rainforest QA is an AI-powered, no-code software testing platform that helps product teams run regression and functional tests without building or maintaining brittle test frameworks. Founded in 2012 in San Francisco and backed by Y Combinator, the company has executed more than 42 million tests for over 10,000 startups and product teams.
Vanta
Vanta is the trust management platform that automates security and compliance for more than 16,000 companies - turning SOC 2, ISO 27001, HIPAA, GDPR and dozens of other frameworks from a months-long PDF marathon into something a startup can pass before lunch.
Vapi
Vapi is a San Francisco developer platform for building, testing, and deploying conversational voice AI agents over phone and web. It abstracts the messy plumbing of speech-to-text, LLMs, text-to-speech, and telephony so developers can ship human-sounding voice agents in minutes, with sub-500ms latency and enterprise-grade compliance.
Anh-Tho Chuong
Anh-Tho Chuong is the co-founder and CEO of Lago, the open-source billing and invoicing platform trusted by companies like Mistral AI, Groq, PayPal, and Synthesia. Born in Réunion to a Vietnamese father who fled the war, she built her career through McKinsey consulting, a formative run as VP Growth (employee #1) at Qonto, and a pivot inside Y Combinator that turned a failed data-tools idea into one of Europe's fastest-growing developer infrastructure plays. Lago has raised $44M in total funding, amassed 9,000+ GitHub stars, and is reshaping how SaaS companies handle complex pricing without handing control to Stripe.
Daniel Bessonov
Daniel Bessonov is the co-founder and CEO of Avora, a Y Combinator- and CRV-backed AI platform that deploys intelligent agents for dental operations - automating clinical documentation, coaching providers on case acceptance, and following up with patients. Before Avora, he architected core payment features at Ramp, built UAV encryption at Anduril, and led product intelligence at Wispr AI. A Penn M&T graduate (CS + Finance), he became a Top 25 App Store developer at age 14 and has spent the decade since compressing complex AI problems into products clinicians actually use.
John Keh
John Keh is the Founder and CEO of Valtec, a San Diego-based maritime AI and drone company that deploys autonomous VTOL systems on commercial fishing vessels to detect tuna schools in real time. A UC Berkeley alumnus and former US Air Force geospatial intelligence analyst with 250+ missions across South Korea and the Middle East, Keh pivoted from food delivery (3rd employee at Caviar, Uber Eats courier intelligence lead) to maritime defense after four years building startups in Taiwan. Valtec raised a $2M pre-seed round in March 2025 backed by SparkLabs Taiwan, Wavemaker VC, DRONE FUND, Guitar Hero founder Kai Huang, and Twitch co-founder Kevin Lin, with the company's Larus VTOL drone and Fulcan AI platform now deployed on 40+ fishing vessels across Taiwan and the Philippines.
Supreet Deshpande
Supreet Deshpande is Co-Founder and CEO of Synthio Labs, a Y Combinator-backed startup building clinical-grade voice AI for the life sciences industry. Drawing on his experience leading Gen AI for Life Sciences at McKinsey and analytics work at ZS Associates and JPMorgan Chase, Deshpande is solving a stubborn pharma problem: 70% of physicians never hear from a field team despite billions spent. Synthio's AI voice agents - reaching every clinician and patient with compliant, multilingual, FDA-aligned conversations - raised a $5M seed round led by Elevation Capital in November 2025 and already counts several Top 10 pharma companies as customers.
Will Yin
Will Yin is the co-founder and CEO of Mandolin, a San Francisco AI automation company building autonomous agents for specialty drug access. A Greenwich High School valedictorian and Stanford dropout, Yin previously co-founded Jupiter (YC-backed, $9M raised) before pivoting to healthcare. At Mandolin, he and co-founder Rohit Rustagi have raised $97M to automate the back-office workflows — prior auth, benefits verification, billing — that delay cancer and Alzheimer's patients from getting life-saving specialty therapies. Within months of launch, Mandolin deployed across 700+ clinics serving 250,000+ new patients annually.
Connor Zwick
Connor Zwick is the CEO and co-founder of Speak, an AI-powered language learning platform that crossed $1 billion in valuation and $100 million in annualized revenue in 2024. A Thiel Fellow who dropped out of Harvard, Zwick built his first app at age 13 and sold Flashcards+ to Chegg as a teenager. He founded Speak in 2016 with Andrew Hsu, and spent years living between San Francisco and Seoul to perfect AI conversation technology for English learners. Today Speak counts over 15 million downloads, backing from OpenAI and Accel, and enterprise customers including KPMG and HD Hyundai.
Yash Patel
Yash M. Patel is the Co-Founder and CEO of Legion Health, a San Francisco-based AI-native mental health platform that delivers insurance-covered psychiatric care via telehealth. A Princeton mathematics graduate (2018) and Y Combinator alum (S21), Yash previously worked as a healthcare policy analyst at the Congressional Budget Office and as a research assistant at Harvard Medical School. Motivated in part by his experience caregiving for his father, he co-founded Legion Health in 2021 alongside Princeton classmates Arthur MacWaters and Daniel Wilson. The company has raised over $10M, and in April 2026 became the first startup to receive regulatory authorization to let AI prescribe psychiatric medications.
Iliana Montauk
Iliana Montauk is the Co-Founder and CEO of Manara, a social-impact edtech platform that connects software engineers from the Middle East and North Africa with global tech jobs at companies like Google, Meta, and Amazon. A Harvard grad and Fulbright Fellow who speaks five languages, she built Gaza's first startup accelerator before co-founding Manara with Laila Abudahi in 2020. Backed by Y Combinator, Stripe, Reid Hoffman, and Paul Graham, Manara has trained engineers who achieve 86% job placement within five months, and in 2025 inked a $3.6M AWS partnership to upskill 2,500 engineers in cloud and AI — on a mission to reach 1 million learners by 2027.
Kai Stinchcombe
Kai Stinchcombe is the founder and CEO of True Link Financial, a San Francisco-based fintech company that builds financial tools for vulnerable populations - seniors with dementia, people with disabilities, and individuals in recovery. Inspired by his grandmother Ruth's experience being defrauded by telemarketers while living with Alzheimer's, Kai co-founded True Link in 2012 to give families and caregivers smart, customizable controls over spending. The company has helped over 250,000 families and raised $50M+ including a $35M Series B led by Khosla Ventures. Beyond True Link, Kai is known for his viral, contrarian essays dismantling blockchain hype, and for co-founding the Roosevelt Institution, a progressive student policy think tank that won a MacArthur Award.
Matt Marcus
Matt Marcus is the Co-Founder and CEO of Modern Treasury, the San Francisco-based payment operations platform that processes hundreds of billions of dollars annually for companies like Gusto, Navan, and Procore. A Dartmouth computer science grad and former competitive rower, Marcus spent a year at LendingHome building the payment system that processed over $3 billion in mortgage loans - and that experience became the blueprint for Modern Treasury. He co-founded the company in 2018 with Sam Aarons and Dimitri Dadiomov, went through Y Combinator's Summer 2018 batch, and has raised $183M in total funding. In July 2025, he transitioned from CPO to CEO, steering Modern Treasury toward unified fiat and stablecoin payment rails following the acquisition of Beam.
Nico Laqua
Nico Laqua is the 26-year-old co-founder and CEO/CTO of Corgi, the AI-native full-stack insurance carrier that went from zero to unicorn ($1.3B valuation) in under two years. A Columbia neuroscience Rabi Scholar turned serial founder, he built Basket Entertainment into a gaming publisher with 200M+ monthly active users before pivoting to reinvent commercial insurance for startups. Corgi raised $268M total - including a $160M Series B in May 2026 - and became the first AI-native licensed insurance carrier purpose-built for technology companies.
Spandana Nakka
Spandana Nakka is the Founder & CEO of Pump.co, a Y Combinator-backed startup that cuts AWS cloud bills by up to 60% for free using group buying and AI. Indian-origin, UAE-raised, and Stanford-educated, Nakka spent four years as one of Google's early female PMs on Google Fiber and Google Play before co-founding Sleek (acquired by Snackpass in 2021) and then building Pump in 2022. Featured in Forbes 30 Under 30 for Consumer Technology, she leads an 88-person team making enterprise-level cloud discounts accessible to startups that can't negotiate alone.
Michael Yan
Michael Yan is the co-founder and CEO of Simplify (YC W21), a San Francisco-based AI-powered job search platform that has helped over 1 million job seekers apply to roughly 100 million job openings. A Morgantown, West Virginia native, Yan dropped out of Stanford to build Simplify after recognizing that students everywhere were lost in the job application chaos. He previously engineered AI/ML systems at Meta, conducted research at MIT CSAIL, and interned at Harvard Medical School. Named to Forbes 30 Under 30 in 2023 (Consumer Technology), Yan has built a 181,000+ follower audience on LinkedIn by sharing brutally practical job search advice - including the URL hack that landed him offers at Meta and Microsoft. Simplify has raised $4.35M from Craft Ventures, Y Combinator, and Soma Capital.
Shyam Maddali
Shyam Maddali is the Co-Founder and CTO of Coris, an AI-powered merchant risk platform backed by Y Combinator, Lux Capital, and Exponent Capital. After spending seven years at WePay (a JPMorgan Chase company) as Senior Director of Data Science & Risk Engineering, and earlier years at eBay leading Trust & Safety machine learning, Shyam co-founded Coris in 2022 to solve the unsolved problem he saw up close: that financial institutions managing small business risk were still drowning in spreadsheets, legacy systems, and false positives. Coris now automates merchant onboarding, underwriting, fraud detection, and continuous monitoring for clients including GoFundMe, Kajabi, Clio, and Cherry - processing intelligence on 330 million merchants across 50+ countries.
Tim Brady
Tim Brady was Yahoo's first non-founding employee, hired by his Stanford roommate Jerry Yang in 1994 when Yahoo was still a grad-school side project. He wrote the business plan that landed Yahoo's first VC money, helped invent the banner ad format, and served as Chief Product Officer through eight years of internet history. After Yahoo, he co-founded Imagine K12 (an edtech accelerator that funded 80+ education startups), served as CEO of QuestBridge, and then spent six years as a Partner at Y Combinator working with hundreds of early-stage companies. He is one of Silicon Valley's most respected operator-turned-investors, known for his integrity, self-effacing candor, and genuine commitment to education.
Henrique Dubugras
Henrique Dubugras is the Brazilian co-founder of Brex, the corporate card and spend management company he built from a Y Combinator pivot at age 21 into a $12.3B peak-valuation fintech unicorn - ultimately acquired by Capital One for $5.15 billion in 2026. He taught himself to code at 12 to avoid paying for a Korean MMO, sold his first payments company (Pagar.me) at 20 while processing $1.5B annually, dropped out of Stanford after 8 months, and found his billion-dollar idea by simply failing to get a credit card for his own startup. Now operating in stealth, he has said he found his 'calling' again.
Yoneda Labs
Yoneda Labs is building the foundation model for chemical manufacturing - think of it as the AI brain that tells chemists exactly which conditions to use to make a reaction work, before they spend months running dead-end experiments. Founded by three Cambridge graduates and backed by Khosla Ventures and Y Combinator, the company's software suite (Predict, Optimize, Analyze) compresses reaction optimization timelines from months to days. Their first named partnership with Symeres pushed cross-coupling reaction yields from ~30% to over 90%. The goal: become the universal AI layer for the $5 trillion chemical industry.