YC List
50 classes 6,350 companies
List of Y Combinator companies by class
2026
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Summer 2026
231 companies- Speko OpenRouter for Voice AI: one API, every call on the best speech model
- Locke The AI-native firm for public influence.
- Inkbox The identity and communication layer for AI agents
- Osseus The frontier data platform for aligned health and biological AI
- OpenVector AI that turns any camera to an autonomous worker with real-time vision
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Spring 2026
193 companies -
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Winter 2026
197 companies
2025
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Fall 2025
145 companies -
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Summer 2025
166 companies -
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Spring 2025
144 companies- throxy Vertical AI agents running B2B outbound on autopilot, with human SDRs
- Aegis AI Agents to win denied health insurance claims.
- Morphik AI workers for Skilled Nursing and Senior Living Operations
- Acolite AI Native Commercial Insurance Broker
- Text.ai Alfi - your group chat with social skills to bring friends closer
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Winter 2025
165 companies
2024
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Fall 2024
94 companies -
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Summer 2024
248 companies -
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Winter 2024
248 companies- Aftercare Conversational AI surveys with intelligent follow-up questions
- Velorum Therapeutics Breakthrough medicines unlocking the biology of heme
- Ubicloud Open source alternative to AWS
- renderlet Build interactive applications that run anywhere
- Silogy An AI-powered test and debug platform for chip developers
2023
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Summer 2023
220 companies -
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Winter 2023
274 companies
2022
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Summer 2022
233 companies -
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Winter 2022
398 companies
2021
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Summer 2021
391 companies- VedaBio CRISPR powered Diagnostics with results in minutes.
- Union54 Developers of ChitChat, an integrated messaging and payments wallet…
- Cococart Empowering local businesses to sell online.
- Plai Create, launch, and optimize Facebook ads and ads on 10+ platforms
- Pandai Learning app for school students in Southeast Asia
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Winter 2021
335 companies
2020
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Summer 2020
209 companies- Swif.ai Manage every device. Govern every AI agent.
- Farel Next-gen airline OS
- Kernal Biologics Kernal is creating mRNA 2.0 therapies that work in specific cells
- twoplus fertility An effective home-use fertility treatment for natural conception
- CoreCare Helping healthcare providers reduce administrative costs using AI
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Winter 2020
229 companies
2019
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Summer 2019
174 companies- Freshpaint Customer data collection, safeguarding, & activation for healthcare
- Dex Dex is a personal CRM that reminds you to keep in touch with the…
- Kern Systems Using DNA to store data.
- Sequence Bio Discovering the true signals of disease to power life-changing drugs.
- GEn1E Lifesciences AI platform accelerating therapies for rare & inflammatory diseases.
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Winter 2019
194 companies- Lezzoo Lezzoo is an on-demand delivery Superapp for Iraq.
- Mudrex India's largest crypto investing paltform
- Intelline Intelline makes the world's most efficient fuel agnostic engines for…
- Cuanto Building the operating system for developing world merchants
- Landed Generative AI for frontline worker hiring
2018
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Summer 2018
131 companies- Vimcal The world's fastest calendar, beautifully designed for remote teams.
- Pine Park Health We provide primary care in senior living communities.
- Apprentice Health We deploy sensors and software that increase hospital efficiency.
- The Good Food Institute Building a world where alternative proteins are no longer alternative.
- Within Company Brain for people and agents to work in harmony.
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Winter 2018
146 companies- Nuvocargo Your AI partner for North America truckload freight
- Spellbrush Making Anime Real
- Vena Medical Vena Medical is providing physicians with the world's smallest camera…
- Nectome Human whole body end-of-life preservation for later revival.
- Jasper.ai Jasper is a leader in creating content using Artificial Intelligence
2017
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Summer 2017
125 companies- Candidately The digital storefront for staffing and recruiting teams.
- Bloom Institute of Technology The online coding school that invests in you.
- FollowUpThen FollowUpThen is an email-based personal assistant that sends you…
- Rev Genomics Rev is a biotechnology company creating better plants.
- Rabbet The financial foundation for every real estate development decision
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Winter 2017
116 companies
2016
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Summer 2016
102 companies- Yoshi Mobility Making car ownership and management frictionless.
- Multiply Labs Robotic production capacity for the pharma manufacturing industry
- Flutterwave Helping businesses make and accept payments from anywhere in Africa.
- New Incentives Cash transfers that save lives.
- Scale AI Data-centric infrastructure to accelerate the development of AI
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Fellowship 2
18 companies- Ctzen 311 for the developing world
- Awesound Publish your audiobook in minutes, charge subscriptions for a paid podcast, and sell audio directly from your own website.
- Zube Project management for Github issues
- Pramp A free peer-to-peer technical mock interviewing platform for engineers
- Squire OpenTable for barbershops
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Winter 2016
122 companies
2015
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Fellowship 1
19 companies- Apify Formerly Apifier. The web scraping and automation platform, which enables to turn any website into an API.
- Clearbanc Financial services for self-employed, freelancers, independent contractors, and entrepreneurs
- Canvas Medical Canvas is a predictive charting interface designed and built exclusively for primary care
- Staffjoy Better work schedules in less time
- Pawprint All your pet's data in one place
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Summer 2015
104 companies- Shred Video Shred Video builds automated video & photo systems that allow…
- Confident LIMS Laboratory Information Management System (LIMS) serving…
- Bodyport Predicting and preventing heart disease.
- Heroic Labs Social Infrastructure for Games; Makers of Nakama game server, Satori…
- Gemnote Gemnote is the easiest way to design, create and send custom products.
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Winter 2015
110 companies- Bankjoy An end-to-end digital banking solution for banks and credit unions
- Qventus We automate operations for hospitals and health systems
- Tab Revolutionising the way travellers discover, plan and book a trip
- The Human Utility The Human Utility seeks to eliminate water service disconnections for…
- Razorpay India's only full-stack financial solutions company for businesses.
2014
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Summer 2014
78 companies -
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Winter 2014
74 companies- AirHelp AirHelp helps air passengers get compensation for delayed, cancelled…
- MixerBox AI Super-Apps to Live Easier | The anything anytime superapps…
- GBatteries Enabling li-ion batteries to charge ultra fast without compromising…
- Snapdocs digital mortgage closing
- Cambly On-demand access to English tutors over video chat.
2013
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Summer 2013
52 companies- Asseta Sourcing marketplace for semiconductor fab spare parts.
- Panorama Education Improving education for every student.
- Lob Lob is the only automation platform that transforms direct mail into…
- Webflow Professional website design and publishing platform.
- Estimote, Inc. Location intelligence platform
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Winter 2013
46 companies
2012
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Summer 2012
83 companies -
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Winter 2012
66 companies- CircuitHub On-Demand Electronics Manufacturing
- Shoptiques Shoptiques.com lets you shop the world's best local boutiques online.
- HireArt Gives businesses everything needed to hire & manage W2 contractors.
- Medigram We are making a HIPAA-compliant, Groupme app for doctors to…
- Rescale High Performance Computing Built for the Cloud
2011
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Summer 2011
60 companies- MixRank Data products for sales, marketing, finance, recruiting, and more.
- Apollo Apollo helps engineering teams accelerate delivery
- HackerRank Change the world to value skills over pedigree
- AgileMD Predictive analytics and clinical pathways for hospitals
- Quartzy Marketplace for life science supplies.
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Winter 2011
45 companies- Storyworth Record your family stories and print them in beautiful keepsake books.
- Zerocater Zerocater is revolutionizing how companies feed their employees
- SingleStore The cloud-native, operational database built for speed and scale.
- You Got Listings All-in-one apartment Marketing Platform for brokerages and landlords.
- Tremendous How businesses send money to people at scale. Fast, free, global.
2010
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Summer 2010
36 companies -
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Winter 2010
27 companies- OwnLocal OwnLocal automates marketing for over 129,000 SMBs through 3,300…
- 500Friends the best loyalty and retention marketing partner for CMOs.
- Optimizely The first all-in-one operating system for marketing
- Infoharmoni Inforharmoni is a data visualization company that visualizes real-time social web and aggregates content.
- Cardpool Cardpool is a gift card exchange marketplace where anybody can buy, sell, or trade their new or pre-owned gift cards. Customers can bu...
2009
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Summer 2009
26 companies -
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Winter 2009
16 companies- Volantio Post-booking revenue and capacity optimization for airlines…
- Picurio Picurio is web-based photo sharing and photo management software.
- reMail Email search for iPhone. Acquired by Google in Feb 2010.
- Echodio Sync and stream your music across any device. Acquired in 2009.
- Wattvision Sensors and software for energy tracking. Like 'fitbit' for your…
2008
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Summer 2008
22 companies- Poll Everywhere Interactive meetings and presentations
- Posterous Dead simple blogs by email
- CO2Stats Social and environmental web analytics. Acquired in December 2016.
- BackType BackType was an analytics company acquired by Twitter in 2011
- Cloudant NoSQL Database-aaS. Acquired by IBM in 2014. Now IBM Cloud Data…
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Winter 2008
21 companies- Ninite Simple third-party app patching and deployment for Windows.
- RescueTime Take Back Control of your Time
- FathomDB FathomDB offers databases as a service, taking care of many of the day-to-day tasks database administrators have to deal with and letting...
- Omnisio Edit and enhance online video. Acquired by Google in July 2008.
- MightyQuiz MightyQuiz powers a collection of user generated quiz questions that can be answered and rated on-site or through a distributable widget.
2007
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Summer 2007
19 companies- Songkick Songkick is the great live music startup. Since 2007, we’ve set about making it as easy, fun and fair as possible for you to see your fav...
- Blue Frog Gaming Browser game studio behind Starfleet Commander. Its successor SFC2 is a free, persistent space strategy MMO.
- Clickpass Clickpass provides single-sign-on services to enter into various websites by using a single password. Clickpass is headquartered in San ...
- Appjet Y Combinator funded AppJet is an online programming tool for building simple web apps. Founded by former MIT students, AppJet intends to ...
- Splashup Splashup, formerly known as fauxto, is an online image editing service that provides some advanced tools and is unique for its incorporat...
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Winter 2007
14 companies- Buxfer Buxfer helps you make better spending decisions by making it easy to…
- Virtualmin Virtualmin is taking on the lack of innovation in the server admin programs, like Plesk, by making a more accessable version for pages ma...
- Weebly Build a free website that grows with your business.
- Octopart Octopart is a search engine for electronic components
- Tsumobi Messaging.
2006
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Summer 2006
10 companies- Scribd World's largest online library.
- OMGPop An independent flash game studio.
- Xobni Xobni makes your inbox and address book smarter. Xobni, and its Smartr product suite, discover all the people you've ever emailed, calle...
- Likebetter An online personality test game, where you look at two photos and choose which one you “Like Better”.
- Pollground Online polls.
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Winter 2006
7 companies- Snipshot We sold Snipshot to Ansa in 2013.
- Clustrix Clustrix provides the leading scale-out relational database engineered for the cloud or data center. ClustrixDB is a drop-in replacement ...
- Inkling Inkling, based in Chicago, Illinois, offers collective intelligence solutions to help organizations make more informed decisions. Inkling...
- Flagr Flagr enables users to share places, adding photos, video and descriptions from their mobile phone. They can then create maps and embed t...
- Wufoo Online form builder.
2005
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Summer 2005
8 companies- Clickfacts ClickFacts is a Malware Software Solutions company for buyers and sellers of online media. Its automated plug and play malware discovery ...
- Reddit The frontpage of the internet.
- TextPayMe Founded in 2005, TextPayMe is an SMS payment service that lets you send money to other people using cell phone text messaging. TextPayMe ...
- Loopt Loopt, based in Silicon-Valley and backed by leading venture capital firms Sequoia Capital and New Enterprise Associates, has created an ...
- Memamp Better Desktop search solution.
