Insights

Gathering insights about Y Combinator…

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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 invests into Flagright Data Technologies Inc. $12.5M in Series A.
Flagright, the AI operating system for financial crime compliance, has raised a $12.5 million Series A funding round led by Infinity Ventures, with participation from Sella Bank and continued backing from existing investors including Frontline and Y Combinator.
Jun 17, 2026 | tech.eu
Y Combinator launched Paxel on Jun 5th '26.
Y Combinator launched Paxel on June 5, 2026, a free tool that reads a developer's Claude, Codex, and Cursor sessions and returns a profile of how they build with AI.
Jun 06, 2026 | noqta.tn
Y Combinator invested into Upstream $3M in Pre Seed on Mar 6th '26.
Paris-based startup Upstream today announced the general availability launch of its AI-native inbox platform, alongside a $3 million pre-seed funding round backed by Y Combinator, Connect Ventures, Roosh Ventures, and more than 30 founders and operators from companies including Framer, Algolia, Asana, Alan, and Webflow.
Jun 03, 2026 | tech.eu
Y Combinator invested into Human Archive $8.2M in funding on May 26th '26.
Building on this early traction, Human Archive announced Tuesday that it has secured $8.2 million in funding from Wing Venture Capital, NVP Capital, Y Combinator, and angel investors from OpenAI, Nvidia, Google, Mercor, AfterQuery, BAIR, SAIL, Brad Boa, and Meta.
May 26, 2026 | aifinderguru.com
Y Combinator invests into Leadbay $4.3M in Seed.
AI startup Leadbay has secured $4.3 million in seed funding from Y Combinator, Roosh Ventures, and other investors to scale its US business and further develop its AI platform for customer...
May 25, 2026 | inventure.com.ua
Y Combinator invested into Stilta $10.5M in funding on May 18th '26.
AI patent litigation startup Stilta this week announced $10.5 million in funding led by Andreessen Horowitz, with participation from Y Combinator and a group of founders and operators from leading AI companies including Sana, Legora, OpenAI, Lovable and Listen Labs.
May 20, 2026 | legaltechnology.com
Y Combinator invested into Invoke Labs, Inc. $2.2M in Pre Seed on May 19th '26.
Voker, an agent analytics platform for artificial intelligence product teams, today announced it has raised $2.2 million in pre-seed funding from Y Combinator and FundersClub.
May 19, 2026 | siliconangle.com

Y Combinator's Email Address Formats

Y Combinator uses at least 1 format(s):

Y Combinator Email Formats	Example	Percentage
First@ycombinator.com	John@ycombinator.com	83%
FLast@ycombinator.com	JDoe@ycombinator.com	7%
FL@ycombinator.com	JD@ycombinator.com	7%
Last@ycombinator.com	Doe@ycombinator.com	3%

Frequently Asked Questions

Where is Y Combinator's headquarters located?

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?

You can contact Y Combinator's main corporate office by phone at

+1-617-576-****

. 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?

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

What is Y Combinator's NAICS code?

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

How many employees does Y Combinator have currently?

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?

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

What technology does Y Combinator use?

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

What is Y Combinator's email format?

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?

Y Combinator was founded in 2005.

Y Combinator

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

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

Q: How many employees does Y Combinator have currently?

Y Combinator has approximately 7.9K employees.

Q: What technology does Y Combinator use?

Y Combinator's tech stack includes Raspberry Pi, CoSchedule, DoorDash, Help Scout, Snowflake.

Q: What is Y Combinator's NAICS code?

Y Combinator's NAICS code is 52391 (Miscellaneous Intermediation).

Venture Capital and Private Equity PrincipalsUnited States5001-10000 Employees

Y Combinator is the leading startup accelerator for entrepreneurs. Since 2005, YC has invested in over 5,400 companies, including Airbnb, Dropbox, Stripe, Reddit, Instacart, DoorDash, and Coinbase. Today, YC has built the most powerful startup community in the world alongside the products and programs to support founders for the life of their company.