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?

Munify provides stablecoin-powered cross-border payments and AI-driven workflow tools for financial services.

Artificial Intelligence (AI)BlockchainFinancial ServicesFinTechPayments
SeedAug 29, 2025
Amount Raised: $3,000,000
Momento

Mexico City, Distrito Federal, Mexico

Momento is trying to make life easier for underserved car driver in LatAm

Auto InsuranceFinTechInsuranceInsurTech
Series AAug 28, 2025
Amount Raised: $10,250,000
Central

San Francisco, California, United States

Central simplifies payroll, hiring, benefits, and compliance for startups, automating back-office tasks to save time and reduce risks.

Artificial Intelligence (AI)B2BBookkeeping and PayrollFinTechSoftware
SeedAug 27, 2025
Amount Raised: $8,600,000
Bluejay AI

San Francisco, California, United States

Bluejay uses agent and customer data to build simulations.

SoftwareWeb Development
SeedAug 27, 2025
Amount Raised: $4,000,000
Atomic

San Francisco, California, United States

Atomic is a platform that provides embedded investing and savings products for financial institutions and fintechs.

B2CFinancial ServicesFinTechPersonal Finance
Series UnknownAug 27, 2025
Amount Raised: $30,000,000
Aurelian

Houston, Texas, United States

Aurelian is an AI platform designed to automate routes, triage, and resolve non-emergency police calls.

Artificial Intelligence (AI)Call CenterSoftware
Series AAug 27, 2025
Amount Raised: $14,000,000
Kapital

Mexico City, Distrito Federal, Mexico

Kapital is a financial institution offering bank accounts, investments, and credit products for individuals.

Financial ServicesFinTechProductivity ToolsSmall and Medium BusinessesWealth Management
Series CAug 25, 2025
Amount Raised: $100,000,000
Oway

San Francisco, California, United States

Oway is an AI-driven marketplace pioneering new protocols using empty truck space to upgrade how freight shipping works in America.

Artificial Intelligence (AI)LogisticsMachine LearningMarketplaceRide SharingShippingSoftware
SeedAug 22, 2025
Amount Raised: $4,000,000
Pylon

San Francisco, California, United States

Pylon is building the first customer support platform built for B2B companies.

B2BCRMCustomer ServiceSoftwareTechnical Support
Series BAug 20, 2025
Amount Raised: $31,000,000
SRE.ai

San Francisco, California, United States

AI powered DevOps automation for enterprise teams, starting with Salesforce Clouds.

Artificial Intelligence (AI)Developer ToolsSoftware
SeedAug 20, 2025
Amount Raised: $7,200,000