Y Combinator

Y Combinator

Seed-stage startup accelerator and investor

Overview

Y Combinator is a startup accelerator that funds early-stage companies through seed investments and a three-month, batch-based program. Founders receive mentorship, guidance on product and business strategy, and a Demo Day to present to invited investors. The program runs four times a year, creating a strong network effect among participants who can support one another and share experiences. The accelerator’s portfolio spans software, fintech, biotech, and consumer products, with notable alumni including Stripe, Airbnb, and Coinbase. Unlike many investors, Y Combinator combines a small equity stake with access to a vast alumni and investor network, monetizing returns from successful exits such as acquisitions or IPOs. Its goal is to identify high-potential ventures, help them grow, and generate meaningful financial returns for its stakeholders through exits.

About Y Combinator

Simplify's Rating
Why Y Combinator is rated
B
Rated A on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Venture Capital

Financial Services

Company Size

1,001-5,000

Company Stage

Pre-seed

Total Funding

$48.3B

Headquarters

San Francisco, California

Founded

2005

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Simplify's Take

What believers are saying

  • YC’s Spring 2026 batch opened stablecoin payouts, accelerating closings and signaling operational modernity.
  • YC’s Winter 2026 Demo Day reportedly produced 14 companies above $1 million ARR.
  • YC’s 2026 RFS targets stablecoins, capital raising, and agentic commerce, aligning startups with active demand.

What critics are saying

  • Harmony Oswald’s San Francisco lawsuit survived demurrers in April 2026, extending discovery and legal costs.
  • Palantir sued YC-backed Guardian AI in 2025, framing portfolio companies as trade-secret liabilities.
  • If founders view YC as idea-extractive, application quality drops and network effects weaken.

What makes Y Combinator unique

  • YC’s 2026 batches still command invite-only Demo Days with roughly 1,500 vetted investors.
  • The Startup Directory and Launch YC create a proprietary distribution channel for every portfolio company.
  • YC now funds startups in stablecoins, including a first all-USDC investment in Totalis.

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Funding

Total Funding

$48.3B

Above

Industry Average

Funded Over

0 Rounds

Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Health Savings Account/Flexible Spending Account

Unlimited Paid Time Off

Paid Holidays

401(k) Retirement Plan

401(k) Company Match

Parental Leave

Fertility Treatment Support

Commuter Benefits

Company News

Wamda
Sep 3rd, 2026
Saudi logistics startup Sirdab raises $10M Series A to expand across GCC

Saudi Arabia-based logistics startup Sirdab has raised $10 million in Series A funding, co-led by PIF-backed Elm and existing investor BECO Capital. Other backers include Y Combinator, COTU Ventures and D Global Ventures. Founded in 2022 by Naif Alzahri and Abdulrahman Alnamlah, Sirdab provides a technology platform enabling businesses to access and manage warehousing and transportation services through a single system. The company has grown revenue 20x since graduating from Y Combinator's Winter 2023 batch whilst reaching profitability. Sirdab serves over 850 businesses, including government entities and publicly listed companies, through a network spanning 120-plus warehouses and 60-plus transportation providers. The funding will support expansion across Saudi Arabia and the GCC, network growth and platform development, including AI capabilities for matching businesses with capacity.

Accent
Sep 3rd, 2026
Ziina raises $22M as UAE fintech defies global funding slump

Dubai-based fintech startup Ziina has secured $22 million in Series A funding led by Altos Ventures, with participation from Fintech Collective, Avenir Growth, Activant Capital, Y Combinator, FJ Labs, MEVP, and Jabbar Internet Group. The round comes as global fintech funding dropped from $144.2 billion in 2021 to $40.7 billion last year. Ziina serves the UAE's 560,000 small and medium-sized enterprises, which comprise 94% of all businesses and contribute 60% of GDP. The company received a Stored Value Facility license from the UAE Central Bank in 2023, allowing it to hold customer funds. The startup will use the funding to develop products including ZiiCard, a digital wallet-linked card with expense tracking and payment splitting features. Ziina plans to expand into Saudi Arabia and Jordan.

BBX
Sep 3rd, 2026
German AI data analytics startup Zeit AI raises $5.7M seed from Y Combinator and Sequoia scouts

German AI data analytics startup Zeit AI has completed a €5 million seed funding round. The round was backed by Y Combinator, Oxford University Seed Fund, Sequoia Capital Scout Fund, ACE Ventures, and HPVC under SAP co-founder Hasso Plattner. Individual investors include former German Finance Minister Christian Lindner, 2014 World Cup champion Mario Götze, and Meta board member Charlie Songhurst.

Tech Funding News
Sep 2nd, 2026
DataCamp founder bags $50M for Conveo to take AI into consumer research — TFN

DataCamp founder Dieter De Mesmaeker’s Conveo has raised $50M from DST Global and Balderton to scale AI-powered consumer video research.

Business Recorder
Sep 2nd, 2026
Airlift co-founder Usman Gul's AI startup Metal raises $4.5M seed

Metal, a Pakistan-based AI startup founded by former Airlift co-founder Usman Gul, has raised $4.5 million in seed funding led by a16z Speedrun and Y Combinator. The company operates an AI platform that provides intelligence and automation to help startups with fundraising and venture capital workflows. Other investors include Pioneer Fund, Rebel Fund, Gaingels, Indus Valley Capital, Team Ignite Ventures, and Phaze Ventures. According to Gul, Metal has achieved six consecutive quarters of 30-80% quarter-on-quarter growth and is tracking towards multi-million-dollar annual revenue by FY2026. The company aims to transform its software from a fundraising tool into broader infrastructure for the capital formation process. Metal also published a thesis outlining its vision for the evolution of private capital markets.

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