Y Combinator logo

Y Combinator

North America, California, United States, Mountain View

Description

Y Combinator, headquartered in Mountain View, California, stands as one of the world's most influential and prestigious startup accelerators. Founded in 2005, it pioneered the seed-stage accelerator model, providing early-stage companies with capital, mentorship, and a robust network designed to accelerate their growth. YC's rigorous program, conducted in two batches annually (Winter and Summer), culminates in a Demo Day where founders present their progress to a curated audience of investors.

The accelerator's standard investment terms are a significant draw for aspiring founders. Y Combinator typically invests $500,000 into each company accepted into its program. This investment is structured as $125,000 for 7% equity on a post-money SAFE (Simple Agreement for Future Equity), alongside an additional $375,000 on an uncapped Most Favored Nation (MFN) SAFE. This standardized approach simplifies the initial funding process, allowing founders to focus on product development and market fit rather than protracted fundraising.

Y Combinator's impact on the global startup ecosystem is profound. As of early 2024, it has funded over 4,000 companies across a diverse range of sectors, including software, hardware, biotech, and consumer goods. The combined valuation of YC alumni companies exceeds $600 billion, featuring household names such as Airbnb, Dropbox, Stripe, Coinbase, Reddit, and DoorDash. Its extensive alumni network and ongoing support resources provide a competitive advantage for its portfolio companies, solidifying its position as a critical launchpad for high-growth ventures.

Investor Profile

Y Combinator has backed more than 5,163 startups, with 740 new investments in the last 12 months alone. The firm has led 1,876 rounds, about 36% of its total and boasts 572 exits across its portfolio.

Investment Focus Highlights

  • Concentrates on Seed, Pre Seed, Series A rounds (top funding stages).
  • Majority of deals are located in United States, India, Canada.
  • Strong thematic focus on Software, Artificial Intelligence (AI), Information Technology.
  • Led 466 rounds in the past year.
  • Typical check size: $500K.

Stage Focus

  • Seed (45%)
  • Pre Seed (36%)
  • Series A (8%)
  • Series Unknown (4%)
  • Series B (3%)
  • Series C (1%)
  • Angel (1%)

Country Focus

  • United States (75%)
  • India (4%)
  • Canada (3%)
  • United Kingdom (3%)
  • Mexico (1%)
  • Singapore (1%)
  • France (1%)
  • Germany (1%)
  • Nigeria (1%)
  • Indonesia (1%)

Industry Focus

  • Software
  • Artificial Intelligence (Ai)
  • Information Technology
  • Fintech
  • Saas
  • Financial Services
  • Health Care
  • E-commerce
  • Internet
  • B2b
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FAQ

Frequently Asked Questions

Learn who this investor regularly partners with—both firms and angels—and explore their latest activity.

Who does Y Combinator frequently co-invest with?

Soma Capital
North America, California, United States, San Francisco
Co-Investments: 278
FundersClub
North America, California, United States, San Francisco
Co-Investments: 249
Liquid 2 Ventures
North America, California, United States, San Francisco
Co-Investments: 271
SV Angel
North America, California, United States, San Francisco
Co-Investments: 250
Pioneer Fund
North America, California, United States, San Francisco
Co-Investments: 367
Andreessen Horowitz
North America, California, United States, Menlo Park
Co-Investments: 102
Initialized Capital
North America, California, United States, San Francisco
Co-Investments: 116
Rebel Fund
North America, California, United States, Calabasas
Co-Investments: 128
Goodwater Capital
North America, California, United States, Burlingame
Co-Investments: 236
Khosla Ventures
North America, California, United States, Menlo Park
Co-Investments: 109

Which angels does Y Combinator often collaborate with?

WG
North America, California, United States, San Francisco
Shared Deals: 44
JM
North America, United States
Shared Deals: 37
EL
North America, Florida, United States, Miami Beach
Shared Deals: 56
LB
North America, California, United States, San Francisco
Shared Deals: 42
PB
North America, California, United States, Mountain View
Shared Deals: 98
AF
North America, California, United States, San Francisco
Shared Deals: 35
AO
North America, California, United States, San Francisco
Shared Deals: 59
BF
North America, California, United States, San Francisco
Shared Deals: 34
KT
North America, California, United States, San Francisco
Shared Deals: 29
IA
North America, California, United States, San Francisco
Shared Deals: 31

What are some of recent deals done by Y Combinator?

Supernova.io

Prague, Hlavni mesto Praha, Czech Republic

Supernova connects your design and engineering data in a single design system tool to accelerate and scale your product development.

Developer ToolsGraphic DesignInformation Technology
Series ASep 30, 2025
Amount Raised: $9,200,000
Mohi

San Francisco, California, United States

Mohi provides a platform that analyzes and clarifies complex AI agent workflows to help optimize and troubleshoot autonomous processes.

Artificial Intelligence (AI)Developer ToolsInformation TechnologySaaSSoftware
Pre SeedSep 29, 2025
Amount Raised: $500,000
AT

Seoul, Seoul-t'ukpyolsi, South Korea

AT is an innovative collaboration tool company that provides AI meeting note-taker.

Pre SeedSep 29, 2025
Amount Raised: $536
Alex AI

San Francisco, California, United States

Alex AI is an autonomous recruiter that automates candidate screening and interviewing processes.

Artificial Intelligence (AI)B2BGenerative AIHuman ResourcesRecruiting
Series ASep 29, 2025
Amount Raised: $17,000,000
Alguna

San Francisco, California, United States

Alguna is a modern pricing, quoting and billing platform.

B2BBillingSaaSSoftware
SeedSep 25, 2025
Amount Raised: $4,000,000
Burnt

San Francisco, California, United States

Burnt is a provider of a restaurant application platform that automates workflows stuck in legacy ERP systems.

Artificial Intelligence (AI)Food and BeverageInformation TechnologyRestaurants
SeedSep 25, 2025
Amount Raised: $3,800,000
BotCity

São Paulo, Sao Paulo, Brazil

BotCity is a governance and orchestration platform for Python scripts created by AI or humans.

Data GovernanceDeveloper PlatformDeveloper ToolsEnterprise SoftwareGenerative AISoftware
Series ASep 25, 2025
Amount Raised: $12,191,920
Selfin

London, England, United Kingdom

First AI-powered bank

Artificial Intelligence (AI)Financial ServicesFinTech
Pre SeedSep 24, 2025
Amount Raised: $500,000
Mainflow

San Francisco, California, United States

Mainflow is building a primitive fintech platform, designed for manual use.

FinTech
Pre SeedSep 24, 2025
Gullak.Money

Bengaluru, Karnataka, India

Gullak.Money aims to create an all-inclusive ecosystem of saving which is accessible to all.

FinTech
Series ASep 24, 2025
Amount Raised: $7,500,000