Y Combinator
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Y Combinator

https://www.ycombinator.com
Last activity: 18.09.2026
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Invests in categories: AppDataFinTechHealthTechITPlatformProductServiceSoftwareTechnology
Y Combinator is a startup accelerator that provides seed funding, mentorship and networking opportunities for new companies in various fields of technology. It is based in Mountain View, California and has launched over 4,000 startups since 2005. Some of its most successful alumni include Airbnb, Coinbase, Dropbox, Reddit and Stripe.

Y Combinator invests in startups twice a year, in batches of around 200 companies each. The startups go through a 3-month program where they receive guidance from Y Combinator partners and experts, as well as access to a large network of founders and investors. At the end of the program, the startups present their products or services to a selected audience of investors and press on Demo Day.

Y Combinator is one of the best resources for aspiring entrepreneurs who want to turn their ideas into reality. It offers benefits such as:

A chance to work with some of the most influential people in the tech industry.
A community of supportive and ambitious founders who can help each other grow.
A platform to showcase your startup to potential customers, partners and investors.
A lifetime access to Y Combinator’s network and resources.
If you are interested in applying to Y Combinator, you can submit your application online. You can also browse thousands of startup jobs curated by Y Combinator on their website.
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News
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Portfolio
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Mentions
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Location: United States, California, Mountain View
Employees: 51-200
Founded date: 2005
Investment Type: Venture Capital
Investment Stage: Pre-Seed; Seed; Series A; Series B; Series C; Series D; Series E; Series F; Series G

Portfolio 5557

DateNameWebsiteTotal RaisedLocation
02.09.2026Conveoconveo.ai$55.3MBelgium
21.08.2026Multipliermultiplier.ai$6MUnited Sta...
21.08.2026Idleridler.ai-United Sta...
21.08.2026Thunder Co...thundercompute.com$13MUnited Sta...
20.08.2026Apollo Ato...apolloatomics.com$31MUnited Sta...
19.08.2026Hypercubichypercubic.ai$5.3MUnited Sta...
13.08.2026Blacksmith...blacksmith.com$45MUnited Sta...
11.08.2026River AIriver.ai$1.1BUnited Sta...
30.07.2026Henry AIhenry.ai$20.8MUnited Sta...
30.07.2026Vector Leg...vectorlegal.com$5.19MUnited Sta...
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News 3293

DateTitleDescription
17.04.2024When should a founder trust gut instincts?When you’re making important decisions as a founder — like what to build, or how it should work — should you spend lots of time gathering input from others or just trust your gut? The answer: it depends. It depends on who you are, what you’...
17.04.2024Meet YC’s newest Visiting Group PartnersI am excited to announce we have three new Visiting Group Partners joining us for the S24 YC batch: Andrew Miklas, Ooshma Garg, and Jon Xu. Visiting Group Partners help advise founders during the batch by sharing their own experiences and l...
15.04.2024YC in the UKWe’re excited to announce we’ll be visiting London and three universities in the UK – Cambridge, Imperial, and Oxford. If you’re interested in starting a startup, or are in the early stages of building one, we hope to see you there. Paul Gr...
11.04.2024Hard Tech Companies, Then and NowLast month, Boom became the first independent company to develop a supersonic jet. Here’s Boom’s XB-1 jet taking its maiden flight: It was a historic moment for humanity. It was also an emotional moment for us at YC because we’ve been hopin...
03.04.2024Meet the YC Winter 2024 BatchToday we’re kicking off Y Combinator’s 38th Demo Day, celebrating the incredible batch that is W24. This batch marks the completion of my first year as President of YC — and what an amazing year it’s been. During the last batch we moved Y C...
28.03.2024Building AI Models is faster and cheaper than you probably thinkIf you read articles about companies like OpenAI and Anthropic training foundation models, the press tends to focus on the huge amount of money and computation involved. It would be natural to assume that if you don’t have a billion dollars...
27.03.2024Want to start a startup? Meet all the YC partners in Boston - Apr 20thJoin us in Boston for Startup School East on April 20!STARTUP SCHOOL EAST: On April 20, we’re hosting Startup School East, a one-day event where you’ll hear stories and advice from founders and YC partners. Hear how some of the most success...
21.03.2024Build for customers, not VCsIt’s easy to analyze your way out of taking the first step. It’s something we see a lot, particularly when founders try to choose what to build based on what they think VCs will like. These founders will find a great problem that they could...
21.03.2024The RedditsI met the Reddits before we even started Y Combinator. In fact they were one of the reasons we started it. YC grew out of a talk I gave to the Harvard Computer Society (the undergrad computer club) about how to start a startup. Everyone els...
15.03.2024Michael Seibel on his next ten years at YCWe typically don’t make changes to our internal org structure public unless significant – and Michael Seibel’s impact as a leader at YC has been significant. Earlier today Michael shared an update with the YC community, outlining a shift to...
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Mentions in press and media 5261

DateTitleDescription
18.09.2026Angle Health Secures $600M at $2.7B Valuation to Scale AI-Native Small Business Health PlansWhat You Should Know Angle Health, an AI-native healthcare benefits platform designed for small and midsize businesses (SMBs), announced a $600M equity financing transaction at a $2.7 billion valuation. The financing was led by global growt...
17.09.2026Kastle Raises $24M Series A Financing SAN FRANCISCO, CA, Kastle, the AI workforce platform transforming consumer lending, today announced it has raised $24 million in Series A funding. >> Click here for more funding data on Kastle >> To export Kastle funding data t...
17.09.2026Peak XV sells Groww shares worth Rs 1,756 crore, cuts stake to about 14.2%Peak XV Partners has sold shares worth about Rs 1,756 crore in Bengaluru-based Billionbrains Garage Ventures, the parent company of investment platform Groww, as the venture capital firm continues to reduce its holding. Advertisment Peak XV...
10.09.2026AI Compliance Leader Blee Secures $20M to Govern Content DelugeBlee, a New York startup, announced a $20 million Series A funding round. This investment fuels its AI-powered marketing compliance solution. Generative AI has unleashed a content deluge. Traditional manual review processes cannot cope. Thi...
10.09.2026Venture Capital Redefines Future: Billions Flow to Strategic Control, Embedded AI, and Deep Tech FrontiersVenture capital's focus has sharpened. Investors now target control: scarce physical capacity, regulated workflows, and hard-to-replicate networks. Billions flow into companies mastering these bottlenecks. Reusable rockets, autonomous aircr...
10.09.2026Stoke Space Secures $1 Billion for Fully Reusable Rocket DevelopmentStoke Space secured $1 billion in Series E funding. Total capital now reaches $2.3 billion. The company aims to develop fully reusable rockets. Nova Pathfinder nears its first orbital flight. Nova Block 2, a larger vehicle, is in accelerate...
10.09.2026Y Combinator Alum Launches Atli, an AI-Powered Travel eSIM Built Into WhatsAppRazer-backed travel tech company XForge Mobile turns WhatsApp into a travel connectivity platform for international travel - helping travelers find, buy and activate eSIM data across 200+ countries through a conversation. SAN FRANCISCO and ...
08.09.2026Stoke Space Raises $1 Billion To Build & Scale Fully Reusable RocketsGetting stuff to orbit costs a lot. Even SpaceX’s Falcon 9 only reuses the bottom part of the rocket, and the top part still burns up. Stoke Space raises $1B to change that and build a rocket that flies back to Earth in one piece.Stoke Spac...
08.09.2026Blee Scoops Up $20M Series A Round NEW YORK, NY, Blee, an AI-first marketing compliance platform, today announced a $20 million Series A to give legal, compliance, and brand teams the ability to govern the growing amount of AI-generated content. >> Click here for more...
08.09.2026Venture Capital & Startup Funding Roundup, September 8, 2026: Accel, Atomico, Bessemer, General Catalyst, Thrive Capital, Y Combinator & MoreVenture capital’s clearest signal today isn’t AI by itself. It is capital moving toward systems that control scarce physical capacity, regulated workflows, or hard-to-replicate operating networks. In just the past 12 hours, investors poured...
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Reviews 1

21.12.2023
Participated in Y Combinator a few years ago, it's an incredible Silicon Valley accelerator. Think Harvard for startups. Big names like Airbnb, Stripe, Dropbox started there. Our journey? Challenging but transformative. Initial rejection, but reapplied with a clearer vision and got in. YC's not your typical program, it’s intense, focused work, not just lectures. Mentors are blunt, no fluff, pushing you to think big. Our outcome? $120K investment, 7% equity, rapid $2M funding after Demo Day. YC's network is invaluable, it's like having Harvard on your resume. Highly recommend for startups aiming big!

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