Insights

Growing Funding Presence Y Combinator has recently invested in multiple early-stage AI startups across various sectors, indicating an active interest in emerging AI technologies and a strong potential for partnership or technology integration opportunities.

Expanding AI Portfolio The company’s recent investments in AI-focused firms like Flagright, Upstream, Human Archive, Leadbay, Stilta, and Invoke Labs highlight an emphasis on innovative AI solutions, opening opportunities for sales of AI development tools, data management platforms, or compliance services.

Large Enterprise Engagement With a sizable employee base of up to 10,000 and revenue estimates between one and ten billion dollars, Y Combinator demonstrates significant market influence, suggesting potential for enterprise-level collaborations and large-scale licensing deals.

Tech Stack and Innovation The company’s investment in startups utilizing advanced AI, blockchain technologies, and innovative data tools points to a fertile environment for selling complementary software, cloud services, or AI-powered analytics solutions tailored to their portfolio companies.

Market Leadership As a leader with a track record of over 5,400 investments and fostering the most influential startup community worldwide, Y Combinator’s engagement presents a strategic opportunity to establish partnerships, strategic alliances, or service offerings aimed at high-growth startups and rising tech innovators.

Y Combinator Tech Stack

Y Combinator uses 8 technology products and services including Ethereum, CMake, Google Docs, and more. Explore Y Combinator's tech stack below.

  • Ethereum
    Blockchain
  • CMake
    Build Automation
  • Google Docs
    Documentation Tools
  • Deliveroo
    Food Ordering And Delivery
  • Qualtrics
    Online Form Builders
  • Java
    Programming Languages
  • Google Search Console
    Web Analytics
  • Facebook
    Widgets

Media & News

Y Combinator's Email Address Formats

Y Combinator uses at least 1 format(s):
Y Combinator Email FormatsExamplePercentage
First@ycombinator.comJohn@ycombinator.com
83%
FLast@ycombinator.comJDoe@ycombinator.com
7%
FL@ycombinator.comJD@ycombinator.com
7%
Last@ycombinator.comDoe@ycombinator.com
3%

Frequently Asked Questions

Where is Y Combinator's headquarters located?

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Y Combinator's main headquarters is located at United States. The company has employees across 6 continents, including North AmericaAsiaEurope.

What is Y Combinator's phone number?

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You can contact Y Combinator's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Y Combinator's official website and social media links?

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Y Combinator's official website is ycombinator.com and has social profiles on LinkedIn.

What is Y Combinator's NAICS code?

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Y Combinator's NAICS code is 52391 - Miscellaneous Intermediation.

How many employees does Y Combinator have currently?

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As of May 2026, Y Combinator has approximately 7.9K employees across 6 continents, including North AmericaAsiaEurope. Key team members include CEO: C. S.Ceo: L. M.Chief Executive Officer: T. P.. Explore Y Combinator's employee directory with LeadIQ.

What industry does Y Combinator belong to?

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Y Combinator operates in the Venture Capital and Private Equity Principals industry.

What technology does Y Combinator use?

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Y Combinator's tech stack includes EthereumCMakeGoogle DocsDeliverooQualtricsJavaGoogle Search ConsoleFacebook.

What is Y Combinator's email format?

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Y Combinator's email format typically follows the pattern of First@ycombinator.com. Find more Y Combinator email formats with LeadIQ.

When was Y Combinator founded?

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Y Combinator was founded in 2005.

Y Combinator

Venture Capital and Private Equity PrincipalsUnited States5001-10000 Employees

Y Combinator is a United States-based startup accelerator and venture capital organization operating in the venture capital and private equity sector. Since its founding in 2005, YC has invested in over 5,400 companies, including Airbnb, Dropbox, Stripe, Reddit, Instacart, DoorDash, and Coinbase. The firm describes itself as building a large startup community and offering products and programs to support founders throughout their company's life. The organization employs between 5,001 and 10,000 people and is headquartered in the United States. In 2026, YC engaged in several portfolio activities, including investments in companies such as Flagright Data Technologies and Leadbay, and announced product initiatives like Paxel.

Section iconCompany Overview

Headquarters
United States
Phone number
NAICS Code
52391 - Miscellaneous Intermediation
Founded
2005
Employees
5001-10000

Section iconFunding & Financials

  • $1B$10B

    Y Combinator's revenue is estimated to be in the range of $1B$10B

Section iconFunding & Financials

  • $1B$10B

    Y Combinator's revenue is estimated to be in the range of $1B$10B

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