What stage does Y Combinator invest at?

Y Combinator invests at the Pre-Seed, Seed, Series A stages.

What is Y Combinator's typical check size?

Y Combinator typically writes checks of $500K.

Where is Y Combinator located?

Y Combinator is headquartered in San Francisco, US.

Does Y Combinator lead rounds?

Y Combinator typically participates in rounds rather than leading them.

Y Combinator

Accelerator

San Francisco · Pre-Seed–Series A · 22 people tracked

Also known as Y COMBINATOR MANAGEMENT, LLC · YC

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✨ Fox Verdict

Investment thesis

Y Combinator funds early-stage startups, including companies with no revenue, product, or fully developed idea. Four times a year it selects a cohort of startups and invests $500k each, bringing founders to San Francisco for a three-month intensive program where the team works closely with them to prepare the company before presenting to investors on Demo Day. Support does not end at Demo Day; Y Combinator and its extensive alumni network continue helping founders throughout the life of their companies.

Invests inBiotech Climate Tech Deep Tech Robotics SaaS Sector Agnostic Space TechAfricaArgentinaAustraliaAustriaBelgiumBrazilCanadaChinaColombiaDenmarkEstoniaEuropeFinlandFranceGermanyHong KongIndiaMexicoMountain ViewSan FranciscoUnited States

Source: firm website, verified Aug 3, 2026.

Stage

Pre-Seed–Series A

San Francisco, CA, US

Leads rounds

Follows

Instruments

Equity

Founded

2005

Private fund assets

$22B

VC funds

Portfolio companies

6216

Standard deal

$500K total: $125K for 7% on a post-money SAFE + $375K on an uncapped SAFE with MFN. Invested on acceptance, not contingent on milestones; no program fee; pro rata rights. Companies must be incorporated in the US, Canada, Cayman Islands, or Singapore.

Source: the firm's published deal terms.

Team · 22 people

from the firm's website & curated

Andrew Miklas· General Partnerin

Co-founder and CTO of PagerDuty (NYSE:PD); University of Waterloo and Toronto graduate. YC batch S10 (PagerDuty).

Ankit Gupta· General Partnerin 𝕏

Co-founder and CTO of Reverie Labs (acquired by Ginkgo Bioworks) and a deep learning researcher. YC batch W18 (Reverie Labs).

Brad Flora· General Partner· San Franciscoin 𝕏

Co-founder and CEO of Perfect Audience (acquired by Marin Software) and an active angel investor. YC batch S11 (Perfect Audience).

b•••@ycombinator.comreveal

Chris Golda· General Partner

Co-founder and CEO of BackType (acquired by Twitter) and launched Twitter's Ad Center. YC batch S08 (BackType).

David Lieb· General Partner· Mountain View, Californiain 𝕏

Co-founder and CEO of Bump (acquired by Google) and co-founder of Google Photos. YC batch S09 (Bump).

Garry Tan· President & CEO· San Francisco, CAin 𝕏

Garry Tan wrote the first check to Coinbase and backed Instacart and Flexport as co-founder of Initialized Capital, after earlier co-founding Posterous and designing at Palantir. He became Y Combinator's president and CEO in January 2023, winding down the Continuity growth fund and refocusing the accelerator on early-stage AI companies. He ranked No. 6 on the 2023 Forbes Midas List, his last appearance before returning to YC.

g•••@ycombinator.comreveal

Grey Baker· General Partnerin 𝕏

Grey Baker is a General Partner at Y Combinator. He co-founded Pincites (acquired by Filevine) and Dependabot (a developer tool acquired by GitHub in 2019), and was previously an early product and engineering leader at GoCardless. He holds an MPhil in Economics from the University of Cambridge.

Gustaf Alströmer· General Partnerin 𝕏

General Partner at Y Combinator who previously spent 4.5 years at Airbnb as a Product Lead on the Growth team, which he helped start in 2012. He was earlier Head of Growth at Voxer and co-founder and CEO of Heysan, a YC W07 company.

g•••@ycombinator.comreveal

Harshita Arora· General Partnerin 𝕏

Harshita Arora is a General Partner at Y Combinator. She previously co-founded AtoB (YC S20), a Series C company providing financial infrastructure for the trucking industry, and earlier built Crypto Price Tracker, a portfolio management app that was acquired.

Jessica Livingston· Founder, Retired· England, UKin

Jessica Livingston co-founded Y Combinator in 2005 and shaped its culture, running operations and famously screening founders for determination and honesty during interviews. Her book Founders at Work, a collection of candid interviews with startup founders, became a classic of the genre. She also created YC's Startup School and co-hosts the Social Radars podcast with fellow YC partner Carolynn Levy.

Nicolas Dessaigne· General Partnerin 𝕏

General Partner at Y Combinator and co-founder of Algolia (YC W14), a search API firm he led as CEO to about 350 employees before bringing on a successor in 2020. He holds a PhD in Computer Science from the University of Nantes.

n•••@ycombinator.comreveal

Paul Graham· Founder, Retired· England, UKin 𝕏

Paul Graham co-founded Viaweb, one of the first web application companies, and sold it to Yahoo before starting Y Combinator in 2005 with Jessica Livingston, Robert Morris, and Trevor Blackwell. YC's batch model reshaped how early-stage startups are funded, producing companies like Airbnb, Stripe, and Dropbox. His essays on startups, programming, and ambition are among the most-read writing in the technology industry.

Pete Koomen· General Partner· Reno, Nevadain 𝕏

Co-founder of Optimizely, which reached over $100M ARR before acquisition; holds a Master's in CS from UIUC. YC batch W10 (Optimizely).

p•••@ycombinator.comreveal

Robert Morris· Founder, Retiredin

A professor of computer science at MIT and member of the PDOS group. He has published extensively on wireless networks, distributed operating systems, and peer-to-peer systems. His 1988 discovery of buffer overflow vulnerabilities brought significant attention to internet security, and he holds degrees from Harvard.

Tom Blomfield· General Partner· Londonin 𝕏

Tom Blomfield is a software engineer and entrepreneur who founded GoCardless, writing much of the first version of the product alongside co-founders, before going on to found the digital bank Monzo. He is now closely involved with Y Combinator, referencing recent YC batches and the startups it funds. His current writing focuses on the rapid acceleration of AI, particularly AI coding tools, and the societal disruption he expects them to cause across knowledge work. He builds side projects using AI coding agents, including the recipe app RecipeNinja.ai and his own vibecoded personal blog.

t•••@ycombinator.comreveal

Trevor Blackwell· Founder, Retired· Mountain View, Californiain 𝕏

A roboticist who built the first dynamically balancing biped robot in 2007. He has published research on congestion control in high-speed networks and file system performance, and holds a BEng from Carleton and a PhD in Computer Science from Harvard.

Tyler Bosmeny· General Partnerin 𝕏

Co-founder and CEO of Clever, used by a majority of US students and acquired for $500M. YC batch S12 (Clever).

Aaron Epstein· General Partnerin 𝕏

Aaron Epstein is a Group Partner at YC and was co-founder and CEO of Creative Market (YC W10), a marketplace for graphic design assets acquired by Autodesk in 2014.

a•••@ycombinator.comreveal

Diana Hu· Managing Partnerin 𝕏

Diana Hu is a Managing Partner at Y Combinator. She previously co-founded and served as CTO of Escher Reality (YC S17), an augmented reality backend company acquired by Niantic, where she led the AR platform, and earlier led data science at OnCue TV. Originally from Chile, she holds BS and MS degrees in Electrical and Computer Engineering from Carnegie Mellon University.

d•••@ycombinator.comreveal

Harj Taggar· Visiting Group Partnerin 𝕏

Harj Taggar is cofounder and CEO of Triplebyte, a company that matches engineers with growing technology companies. He previously held a partnership position at Y Combinator.

h•••@ycombinator.comreveal

Jared Friedman· Managing Partnerin 𝕏

Jared Friedman is Managing Director for Software and a Group Partner at Y Combinator. He previously co-founded Scribd, a YC-funded company (2006) that grew into one of the top 100 websites.

j•••@ycombinator.comreveal

Jon Xu· General Partnerin 𝕏

General Partner at Y Combinator who previously co-founded and served as CTO of FutureAdvisor (YC S10), an early robo-advisor acquired by BlackRock in 2015, where he continued leading product and engineering. He holds a Computer Science degree from MIT.

What they invest in

from 6203 of 6216 portfolio companies

Enterprise Software ×3440AI & Machine Learning ×2873SaaS ×2211Developer Tools ×1174Fintech ×1055Consumer ×959Healthtech ×799Data & Infrastructure ×725

HQs:United States×4637United Kingdom×211India×201Canada×151Mexico×80France×67

Portfolio companies · showing 1200 of 6216

alumni founders can tell you what the program is really like

EquipmentShareequipmentshare.comin 𝕏NASDAQ: EQPT✓ verified

EquipmentShare provides construction equipment rentals and fleet management technology for builders and contractors.

Construction TechIoTPropTechSaaSColumbia, US

Brad Siegler(Founder)inJeff Lowe(Founder)inJabbok Schlacks(Founder)inWilliam Schlacks(Founder/President)in

Airbnbairbnb.comin 𝕏NASDAQ: ABNB

Airbnb is an online marketplace that enables people to book and list accommodations for short-term rentals, experiences, and services around the world.

ConsumerMarketplacesTravel & HospitalitySan Francisco, US

Brian Chesky(Founder/CEO)inNathan Blecharczyk(Founder/CTO)inJoe Gebbia(Founder/CPO)inAlfred Lin(Director)Belinda Johnson(Executive Officer)Laurence Tosi(Executive Officer)

Amplitudeamplitude.comin 𝕏NASDAQ: AMPL

Amplitude provides an AI analytics platform that helps companies understand customer behavior and make data-driven product decisions.

Data & InfrastructureDeveloper ToolsEnterprise SoftwareMarketing TechSaaSSan Francisco, US

Spenser Skates(Founder/CEO)inCurtis Liu(Founder/CTO)inJeffrey Wang(Co-Founder)Erica Schultz(Director)Ron Gill(Director)Somesh Dash(Board Observer)

Billion To Onebilliontoone.comin 𝕏NASDAQ: BLLN

BillionToOne is a precision diagnostics company that uses molecular counting technology to develop non-invasive prenatal screening and liquid biopsy tests for early disease detection.

BiotechDigital HealthHealthtechMedical DevicesSan Francisco, US

Oguzhan Atay, PhD(Co-Founder, CEO, and Board Chair)David Tsao, PhD(Co-Founder, CTO, and Board Member)Oguzhan Atay(Founder)inDavid Tsao(Founder/CTO)inSukrit Silas(Cofounder)

Coinbasecoinbase.comin 𝕏NASDAQ: COIN

Coinbase is a cryptocurrency exchange platform that offers trading, custody, and financial services for cryptocurrencies, stocks, derivatives, and prediction markets to consumers, institutions, and developers.

Crypto & Web3FintechLos Angeles, US

Brian Armstrong(Founder/CEO)in

DoorDashdoordash.comin 𝕏NASDAQ: DASH

DoorDash operates a restaurant delivery platform that connects customers with dining establishments across hundreds of cities in North America through a logistics network.

ConsumerE-commerceFoodTechMarketplacesSan Francisco, US

Tony Xu(Founder/CEO)inAndy Fang(Founder)inStanley Tang(Founder)in

Dropboxdropbox.comin 𝕏NASDAQ: DBX

Dropbox is a cloud storage and file synchronization platform that helps teams organize files, reduce busywork, and collaborate efficiently.

Cloud ComputingEnterprise SoftwareFuture of WorkSaaSSan Francisco, US

Drew Houston(Founder/CEO)inArash Ferdowsi(Founder)inAshraf Alkarmi(Co-CEO)

Ginkgo Bioworksginkgobioworks.comin 𝕏NYSE: DNA

Ginkgo Bioworks develops autonomous laboratory systems that automate manual benchwork in biotechnology R&D, enabling scientists to conduct experiments through natural language requests rather than manual lab work.

AI & Machine LearningBiotechDeep TechHealthtechBoston, US

Jason Kelly(Founder)inAustin Che(Founder)inTom Knight(Founder)inBarry Canton(Founder)inReshma Shetty(Founder)in

BoardReshma Sohoni

GitLabgitlab.comin 𝕏NASDAQ: GTLB

GitLab is an intelligent orchestration platform for DevSecOps that enables teams and AI agents to collaborate on the full software development lifecycle, from planning through deployment, with integrated security and compliance capabilities.

AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareSan Francisco, US

Sid Sijbrandij(Founder/CEO)inDmytro Zaporozhets(Founder/CTO)inPaul Machle(Executive Officer)Dmitriy Zaporozhets(Cofounder)

BoardBruce Armstrong(Director)

Growwgroww.inin 𝕏NSE: GROWW

Groww is an investment platform that allows users to buy and sell exchange-traded funds (ETFs) through an online portal.

FintechBengaluru, IN

Lalit Keshre(Founder/CEO)inIshan Bansal(Founder)inHarsh Jain(Founder/COO)inNeeraj Singh(Founder)inAnu Hariharan(Director)Ashish Agrawal(Nominee Director)

Instacartinstacart.comin 𝕏NASDAQ: CART

Instacart operates a marketplace connecting grocery retailers with customers who order food and household items for same-day delivery or in-store pickup, serving millions of households across North America through partnerships with over 350 retailers.

ConsumerE-commerceFoodTechSan Francisco, US

Apoorva Mehta(Founder/Chairman & Founding CEO)inBrandon Leonardo(Founder)inMax Mullen(Founder)in

Meeshomeesho.comin 𝕏NSE: MEESHO

Meesho operates an online marketplace that connects small businesses and individual entrepreneurs with customers across India, offering logistics, payments, and support services to help sellers manage their operations.

E-commerceEnterprise SoftwareBengaluru, IN

Vidit Aatrey(Founder/CEO)inSanjeev Barnwal(Founder/CTO)inSanjeev Kumar(Executive Officer, Director)Sumer Juneja(Director)Mohit Bhatnagar(Director)Ashutosh Sharma(Director)

Momentusmomentus.spacein 𝕏NASDAQ: MNTS

A space transportation and infrastructure services company providing launch capabilities and orbital logistics for satellites and cargo.

Advanced ManufacturingSpace TechSan Francisco, US

Mikhail Kokorich(Founder)inChris Hadfield(Director)John Rood(Executive Officer)Kimberly Reed(Director)Brian Kabot(Director)Vic Mercado(Director)

Oklooklo.comin 𝕏NYSE: OKLO

Oklo develops next-generation fast fission reactors for producing clean electricity at scale, with a focus on safety features and the ability to use recycled nuclear waste as fuel.

Advanced ManufacturingCleantechClimate TechDeep TechEnergySan Francisco, US

Jacob DeWitte(Founder/CEO)inCaroline Cochran(Founder)in

Pager Dutypagerduty.comin 𝕏NYSE: PD

PagerDuty provides a platform for incident response and operations management that enables teams across technical and business functions to respond to critical events in real time.

AI & Machine LearningCloud ComputingDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US

Alex Solomon(Founder/CTO)inJennifer Tejada(Executive Officer, Director)John O'Farrell(Director)Steven Gatoff(Executive Officer)Ethan Kurzweil(Director)Dan Alexandru Solomon(Director)

PartnerAndrew Miklas· led

Redditreddit.comin 𝕏NYSE: RDDT

A social platform where users post content and discussions that are ranked by community votes, reaching hundreds of millions of monthly visitors across web and mobile applications.

ConsumerMedia & EntertainmentSan Francisco, US

Steve Huffman(Founder)in

Rigetti Computingrigetti.comin 𝕏NASDAQ: RGTI

Rigetti develops quantum computing hardware and systems, leveraging superconducting quantum processing units cooled by dilution refrigerators to enable advanced quantum computation capabilities.

Advanced ManufacturingHardwareQuantum ComputingRoboticsSan Francisco, US

Chad Rigetti(Founder/CEO)in

Tinyandtiny.comin 𝕏OTC: TNYZF

Tiny builds an ERP platform that uses AI agents to handle routine manufacturing tasks for factories, targeting the large share of production facilities still dependent on spreadsheets and unstructured data systems.

Enterprise SoftwareSaaSSingapore, SG

Edward Zhang(Co-Founder and CTO)inTim McElvaine(Director)Chris Sparling(Executive Officer, Director)Carla Matheson(Director)Jordan Taub(Executive Officer)Alexander Conconi(Director)

Weavegetweave.comin 𝕏NYSE: WEAV

Weave offers team communication and collaboration tools for healthcare practices, including messaging, scheduling, and patient management features accessible from desktop and mobile apps.

AI & Machine LearningEnterprise SoftwareFuture of WorkHealthtechSaaSLehi, US

Brandon Rodman(Founder/CEO)inJared Rodman(Founder/CCO)inClint Berry(Founder/CTO)in

10 By 1010by10.ioin 𝕏✓ verified

10by10 operates a platform that connects companies with software engineers across recruitment agencies.

AI & Machine LearningEnterprise SoftwareHR TechMarketplacesSaaSSan Francisco, US

April Chang(Founder/CEO)inRobert Bartruff(Founder)inThomas Kollar

10x10xdental.comin 𝕏✓ verified

10x provides an AI-powered back-office service that automates dental practice operations including hygiene recall outreach, treatment follow-up coordination, and missed-call answering.

AI & Machine LearningHealthtechSaaSSan Francisco, US

Max Bohun(Founder)in

19101910.aiin 𝕏✓ verified

1910 develops an AI platform that integrates multimodal data, frontier AI models, and high-throughput lab automation to accelerate drug discovery and development for pharmaceutical companies.

AI & Machine LearningBiotechDeep TechHealthtechBoston, US

Jen Asher(Founder & CEO)in

1910 Genetics1910genetics.comin 𝕏✓ verified

1910 Genetics develops genetic engineering and biotechnology solutions, leveraging computational and biological approaches.

AI & Machine LearningBiotechDeep TechCambridge, US

Samir Kumar(Director)Marc Foster(Director)Jennifer O. Nwankwo(Executive Officer, Director)Jory Bell(Director)

83 Sciences83sciences.aiin 𝕏✓ verified

83 Sciences converts unpublished experimental research data into academic papers, patents, and commercialization opportunities for research organizations.

Advanced ManufacturingAI & Machine LearningBiotechDeep TechSan Francisco, US

Ian Naccarella(Founder)inEric Riesel(Founder)inYankang Yang(Founder)in

9 Mothers9mothers.comin 𝕏✓ verified

9 Mothers builds counter-drone defense systems that enable rapid deployment of point defense at infantry-mobile scale.

Advanced ManufacturingAI & Machine LearningDefense TechHardwareIoTAustin, US

Russell Smith(Founder / CEO)inRoman Khomenko(Founder)inBogdan Pyzh(Co-Founder, COO)in

Abatableabatable.comin 𝕏✓ verified

Abatable provides a platform to help organizations navigate environmental markets for forest protection, clean energy, and community development projects.

Advanced ManufacturingB2B MarketplacesClimate TechData & InfrastructureEnterprise SoftwareFintechSaaSLondon, GB

Maria Eugenia Filmanovic(Founder)inValerio Magliulo(Founder)in

AbInitio Bioabinitio-bio.comin 𝕏✓ verified

AbInitio uses AI models to predict molecular properties, optimize bioprocess conditions, and recommend cell line and media selections for biopharmaceutical development.

AI & Machine LearningBiotechHealthtechBoston, US

Daniel Mukasa(Founder & CEO)inNisha Gopal(Founder)in

Actipulse Neuroscienceactipulseneuroscience.comin 𝕏✓ verified

Actipulse Neuroscience develops non-invasive brain stimulation technologies using high-frequency magnetic pulses to treat central nervous system disorders, including major depressive disorder and neurodegenerative diseases.

BiotechDigital HealthHealthtechMedical DevicesBoston, US

Adrien Châtillon(Founder)inGabriel Villafuerte(Founder)in

Aegisaegishealth.usin 𝕏✓ verified

Aegis provides a platform to healthcare providers and hospitals that automates insurance denial appeals and resubmissions to recover lost revenue.

Enterprise SoftwareHealthtechSaaSSan Francisco, US

Krishang Todi(CEO & Co-Founder)inAarav Bajaj(Founder)inDhanya Shah(Founder)in

Agnost AIagnost.aiin 𝕏✓ verified

Agnost AI provides observability and failure detection for AI agents in production environments.

AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US

Parth Ajmera(Founder)inShubham Palriwala(Founder)in

Airfordableairfordable.comin 𝕏✓ verified

Airfordable offers flexible payment plans for flight and hotel bookings, allowing customers to pay over time without requiring upfront costs or credit checks.

B2B MarketplacesFintechTravel & HospitalityChicago, US

Ama Marfo(CoFounder/CEO)inEmmanuel Buah(Founder/CTO)in

Airweaveairweave.aiin 𝕏✓ verified

Airweave is a context retrieval layer that connects AI agents and RAG systems to apps, tools, and databases, enabling them to retrieve accurate, real-time information through a unified search interface.

AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US

Lennert Jansen(Founder)inRauf Akdemir(Founder)in

AiSDRaisdr.comin 𝕏✓ verified

AiSDR is an AI sales agent that automates outbound sales emails and books meetings for B2B companies.

AI & Machine LearningEnterprise SoftwareSaaSSales TechSan Francisco, US

Yuriy Zaremba(Founder/CEO)inOleg Zaremba(Founder)in

Akiflowakiflow.comin 𝕏✓ verified

Akiflow is a unified time blocking platform that integrates calendar and task management to help professionals organize work without switching between multiple tools.

AI & Machine LearningEnterprise SoftwareFuture of WorkSaaSCT, ES

Nunzio Martinello(Founder & CEO)inSebastiano Favaro(Founder)in

Alaanalaan.comin 𝕏✓ verified

Alaan is an all-in-one expense management platform for finance teams that combines corporate cards, AI-driven expense tracking, accounting automation, and real-time dashboards.

AI & Machine LearningEnterprise SoftwareFintechSaaSDubai, AE

Parthi Duraisamy(Founder)inKarun Kurien(Founder)in

Alba Orbitalalbaorbital.comin 𝕏✓ verified

Alba Orbital manufactures PocketQube satellites and operates as a launch broker, providing small satellite deployment services.

Advanced ManufacturingDeep TechHardwareSpace TechGlasgow, GB

Tom Walkinshaw(Founder)in

Alga Biosciencesalga.bioin 𝕏✓ verified

Alga Biosciences develops feed additives that reduce methane emissions from cattle — cutting cow burps to combat climate change.

Advanced ManufacturingAgTechBiotechClimate TechSan Francisco, US

Alex Brown(Co-founder and CEO)Daria Balatsky(Founder)inCaroline McKeon(Founder)in

Allowanceuseallowance.comin 𝕏✓ verified

Allowance provides AI agents with controlled, limited spending power through temporary payment credentials rather than direct access to real credit cards.

AI & Machine LearningFintechSaaSSan Francisco, US

Dasmer Singh(Founder)in

Alpha Vantagealphavantage.coin 𝕏✓ verified

Alpha Vantage provides realtime and historical financial market data APIs covering stocks, ETFs, forex, commodities, and economic indicators for investors, researchers, and developers.

AI & Machine LearningData & InfrastructureDeveloper ToolsFintechSaaSNew York City, US

Olivier Porte(Founder)inSteve Zheng(Founder)

Alteralterauth.comin 𝕏✓ verified

Alter provides an authentication layer and vault for AI agents to securely access third-party APIs and SaaS platforms.

AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareNew York City, US

Srikar Dandamuraju(Co-Founder & CEO)inKevan Dodhia(Co-Founder & CTO)in

Amborasamboras.comin 𝕏✓ verified

Amboras builds autonomous AI systems for modern e-commerce platforms.

AI & Machine LearningE-commerceEnterprise SoftwareSaaSSan Francisco, US

Imad Mokadem(Founder)inAmin Mokadem(Founder)in

Amuletamulet.soin 𝕏✓ verified

Amulet builds shared storage infrastructure for AI agents to save, retrieve, and collaborate on files.

AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US

Nithik Bala(Founder)inVarun Puru(Founder)in

Ananagetanana.comin 𝕏✓ verified

Anana builds a workspace platform that consolidates revenue, sales, marketing, and operations data for hotel groups, using AI to extract insights from guest conversations and help hospitality teams focus on guest service rather than administrative work.

AI & Machine LearningEnterprise SoftwareSaaSNew York City, US

Ricardo Pantaleon(Co-Founder & CEO)inAlexandros Zisimidis(co-founder)in

Ancanaancana.coin 𝕏✓ verified

Ancana operates a fractional co-ownership marketplace for vacation homes in Mexico and the United States, allowing multiple owners to share luxury properties.

B2B MarketplacesConsumerMarketplacesPropTechTravel & HospitalityMérida, MX

Andres Barrios(Founder)inRyan Black(Founder)in

Anchorgetanchor.coin 𝕏✓ verified

Anchor builds compliance and security solutions for financial services, providing guardrails and protective measures to help customers maintain regulatory compliance.

CybersecurityFintechLagos, NG

Segun Adeyemi(Founder)inGBEKELOLUWA OLUFOTEBI(Founder)inOlamide Sobowale(Founder)in

Andiandiai.comin 𝕏✓ verified

Andi AI is an AI-powered search engine that uses proprietary indexing technology to deliver search results with fact-verified answers.

AI & Machine LearningConsumerMedia & EntertainmentSaaSSan Francisco, US

Angela Hoover(Founder)inJed White(Founder)in

Angleraanglera.comin 𝕏✓ verified

Anglera transforms unstructured product data into complete, AI-ready catalogs for ecommerce and B2B platforms.

AI & Machine LearningData & InfrastructureE-commerceEnterprise SoftwareSaaSSan Francisco, US

Amay Aggarwal(Founder)inRay Iyer(Founder)in

Anja Healthanjahealth.comin 𝕏✓ verified

Anja Health provides cord blood banking and stem cell storage services from umbilical cords and placentas for families.

BiotechFemTechHealthtechMedical DevicesWellness & FitnessNew York City, US

Kathryn Cross(Founder)in

AntWalkantwalk.comin 𝕏✓ verified

AntWalk provides a data-driven platform that evaluates and measures human capabilities within organizations, helping them leverage workforce potential for competitive advantage.

AI & Machine LearningEdTechEnterprise SoftwareHR TechBengaluru, IN

Joybroto Ganguly(Founder)in

AOA Dxaoadx.comin 𝕏✓ verified

AOA Dx develops a blood-based liquid biopsy platform using mass spectrometry and machine learning to detect ovarian cancer at early stages through tumor-associated biomarkers in serum.

AI & Machine LearningBiotechDigital HealthHealthtechMedical DevicesDenver, US

Oriana Papin-Zoghbi(Founder)inAlex Fisher(Founder/COO)inAnna Jeter(Founder)inAbigail Mcelhinny(Executive Officer)Oriana Zoghbi-Harb(Executive Officer, Director)

BoardSurbhi Sarna(Director)

AquaShieldaquashieldai.comin 𝕏✓ verified

AquaShield provides non-invasive water leak detection sensors that install on existing building pipes to monitor flow patterns in real-time and identify leaks before they cause damage.

IoTPropTechSan Francisco, US

Paul Beckers(Co-Founder)inMarguerite Benoist(Co-Founder)in

Archerarchermoney.comin 𝕏✓ verified

Archer provides financial infrastructure for data marketplaces and AI labor platforms, enabling instant payments to global contributors using stablecoins and yield on idle balances.

AI & Machine LearningCrypto & Web3FintechSan Francisco, US

Benjamin Nguyen(Founder)inVivek Yanamadula(Co-Founder)inBen

Arcimusarcimus.comin 𝕏✓ verified

Arcimus sources and filters engineering candidates for technical hiring, using technical founder judgment instead of resume keywords or automated filters.

AI & Machine LearningDeveloper ToolsEnterprise SoftwareHR TechNew York City, US

Hussein Syed(Founder)in

Arintraarintra.comin 𝕏✓ verified

Arintra provides an AI-native autonomous coding platform for healthcare systems that automatically generates medical codes from patient charts to improve revenue capture and reduce denials.

AI & Machine LearningEnterprise SoftwareHealthtechSaaSSan Francisco, US

Nitesh Shroff, PhD(Founder)inPreeti Bhargava, PhD(Founder)in

Artisanartisan.coin 𝕏✓ verified

Artisan builds an AI-powered platform that consolidates fragmented work software tools and automates repetitive workflows through AI collaborators.

AI & Machine LearningEnterprise SoftwareFuture of WorkSaaSSan Francisco, US

Jaspar Carmichael-Jack(Founder)inSam Stallingsin

Artosartosai.comin 𝕏✓ verified

Artos provides AI-powered software tools for Chemistry, Manufacturing, and Controls (CMC) teams in the pharmaceutical industry to draft, manage, and quality-check regulatory documentation.

AI & Machine LearningBiotechEnterprise SoftwareMedical DevicesSan Francisco, US

Josh Kim(Founder)inVarun Patel(Founder)in

Arva AIarva.aiin 𝕏✓ verified

Arva provides financial crime compliance software for compliance teams in financial services, helping them work more efficiently on detection and monitoring tasks.

AI & Machine LearningEnterprise SoftwareFintechNew York City, US

Rhim Shah(Founder/CEO)inOli Wales(Founder/CTO)in

Aryllaarylla.comin 𝕏✓ verified

Arylla produces invisible ink tags using nanotechnology that can be applied to fashion products and read via smartphone to enable authentication, traceability, and personalized customer experiences.

Advanced ManufacturingDirect to ConsumerIoTNew MaterialsRoboticsKitchener, CA

Perry Everett(Founder/Business Development)inBenjamin Rasera(Founder)inGraham Thomas(Founder)in

Arzanaarzana.comin 𝕏✓ verified

Arzana provides ERP and automation tools designed specifically for manufacturers and distributors to streamline administrative and office operations.

Advanced ManufacturingAI & Machine LearningEnterprise SoftwareSaaSSan Francisco, US

William Alexander(Founder)inMarshall Kools(Founder)in

Ascenascen.comin 𝕏✓ verified

Ascen provides working capital and credit management solutions for staffing and payroll agencies, offering real-time credit vetting, embedded funding lines, and automated invoice-to-payment reconciliation integrated into payroll operations.

Enterprise SoftwareFintechHR TechSaaSBoston, US

Francis Larson(Founder)in

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Frigade FundersClub Gazehawk Gem GEn1E Lifesciences General Proximity GetCrux Gigwell Globe GovEagle Gym Class Gym Class VR Hadrius Haplotype Labs Harbera hardware intelligence Haven Hellometer Helonic Hemut HireArt HOAi HOKALI Holy Grail Hona Hubuc Humaans Human Archive Hutsy Hyper Online Hyperbound Hypercubic Imgix Imprezia Infinia InstaAgent Insurf Integrated Reasoning Inth Inversion Space IRBC Isabl Isabl Jestor Jitx Jupiter Karate Labs Karumi Kashikoi Kimpton AI Kinect Kita Knowlify Known Medicine Kodo Labdoor Lago Langfuse Lantern Lark Last Accounting Company Lawn Love Leadbay Levers Lezzoo Libra Robotics Lighthouz AI Lilia Linum Lio (formerly askLio)LiteLLM Localyze Locke Lokal Loops Luable Lumari Lume Lumetric Luminate Macadamia Magic Hour MagicBell Mailmodo Mailwarm Manufact Marathon Education Mastra matagora Medcrypt Medcrypt Medmonk Memoir Mendral Menten AI Mercura Miden Million MindPortal Minimal AI Miso MixerBox mlop Mod AI Momento Mono Mono Monte Monterey AI Moonshine 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Scoutzie Scritch Seaflight Technologies Shape Shofo Shortwave SID Sila SimplyInsured Sivo Skymerse Skyscrape Skyvern Solugen SOTERI SKIN SPATE Specific Spenny Spire Law Spott Squid Standard Signal StarSling Statiq.StayQrious Stilta Storia AI Strive Math Struct Structured Labs Suger Superagent Swadesh Synder Synnax Sytex Tailor Taskade tday.com teaBOT TectoAI Tegore Telmai Tenet Industries Terra API Text.ai The Forecasting Company The Human Utility The Juggernaut Theseus Topo Tough Commerce Traceloop Transfez Trellis Trestle Biotherapeutics trii Triomics Trope Truebill Tumult Turing College Turing Labs Inc.Tweeks.io TwentyTwo Twine Typedream Ubicloud Unlayer Upcall Usul Vantel Vector Vector Legal Veles Velum Labs Vendr Venta AI Verata Veria Labs Versori Vespper Vest Vestris Virtualmin Voicepanel Voosh Voquill Wafer Wavelength Waydev Wedge WhiteLab Genomics Wildcard Wildfire Wingback Wondercraft Workpay x1 Yemaachi Biotechnology yhangry Zavo Zeit AI ZiffyHomes Zip Zoa Research Zoios.Algolia /dev/fast &AI 1000Memories 100x 10x Science 1849 bio 1stCollab 20n 21st 222 280 North 3dot 42 42Floors 500 Friends 54Gene 64x Bio 6thSense 7cups 80,000 Hours 99 Minutos 99dresses 9gag A Thinking Ape a0.dev A1Zap by A1Base Aalo Abacum Abacus Abalone Bio Abbot Abel Abel Police Abhi Able Able Health Abstra Absurd Abundance Labs Abundant Accend Accept.inc (formerly BoardRE)AccessOwl AccioJob Accord Acely ACLU Acolite Acrely Actiondesk Activeloop Activepieces Acunote ACX Adam Adapted Adaptional Adaptyv Aden Adentris AdGrok Adialante Adla Adni Adravision Adri AI AdThrow Advanced Metal Research Advano Advantage Club Adventris Pharmaceuticals Adventurous Co adyn Aecore Aedilic Aella Aemon Aer Aerofs Aerones Aerotime AesculaTech Aesthetic Affil.ai Affinity Affogato AI Afriex Afrostream Aftercare Afternoon.co AfterQuery Agapé Agave Agency Agency Tool Company AgendaPro Agent FM Agentcard AgentCollect Agentic Fabriq Agentic Labs Agentin AI AgentMail Agentnoon AgentPhone AgileMD Aglide Ahazou AI Insurance AI Tech Packs AI.Fashion AICE Aidy AIOS AiPrise Airbyte Airbyte (W20)AirCaps Airgoods Airhart Aeronautics Airhelp Airmada AirMyne Airo Health Airpair Airshared Airthium Airtrain AI Airware Airwork Aisle50 AiSupervision AIVideo.com Aizon Ajaib Akido Labs Akkari Aklimate Aktoria Robotics Akudo Akute Health Alai Alana Alara Albacore Inc.Albedo Albiware Inc.Alchemize Alchemy Aldara Alem Health Aleph Aleph Lab Aleph Labs, Inc.Aleph Solutions (Alephee)Alex Alex Alfie Algen Biotechnologies Algofi Algoriz AlgoSurg Inc AlgoTest AlgoUniversity AlgoViral Alguna Alice.tech Alima Alinea Alixia Alkali Alkera AI All Screen Allo Alloovium Allotrope Medical Alloy AllSome Fulfillment Alltruists Allure Systems Allus AI Alma Almanac Almond Almond Alokai Alpaca Alpas Alpha Research AlphaFlow Alphawatch AI ALT TEX Alt-X Altay Therapeutics Alterya Altrina Altro Altur Alude Aluna Amal Invest AmberBox Gunshot Detection Ambient.ai Ambition Ambral Amby Health Amenli Amera Amiato Amika amiloz AminoAnalytica Amorphic Labs AmpUp Amulyte Anakin Ananya Health Anara Anasen Anchor Health Anchorhead And Comfort Andco Andon Labs Andromeda Surgical Andson Biotech Andustry Andy AI Anfin Angle Health Ångström AI Anima Anima App Anjuna Ankr Ankr Health AnnieCannons ANORIA Ansa Biotechnologies Answerly AnswerThis Anthrogen Antigen Anto Biosciences AnyList Anyteam AnythingLLM Anyvite Anywhere.FM AON3D Apartio Apero Health Apolink Apollo Apollo Apollo Apollo Atomics, Inc.Apollo Health Apollo.io ApolloShield Apoxy Apozy Appcanary Appcubator AppHarbor Appjet Applied Electrodynamics, Inc.Apply Design Apportable Apprentice Health Approxima Apptimize AppX AptDeco Apten Aptible Apto Payments Apurata Aqua Aqua Voice Aquarium Learning Ara Aragorn AI Aravolta Arbital Arc Arc ARC Prize Foundation Arcane Archal Archbee ArchForm Archil ArchiLabs Archive Archive Archon Archon Arctic Health Arcus Arden Ardent Ardis AI Arengu Ares Industries Arga Labs Argil Argo Argon AI, Inc.Argovox args Argument Computer Corporation Ariglad Arini Arist Ark Arketa Arlo Industries Armature Armilla AI Armory Arnata Arpari Arpeggio Bio Arpio ARQ Array Labs Arrofinance Arrow Arroyo Artemis Search Arthena Artie Artifact Artifact Artificial Societies Artillery Aseon Labs Ashby Asher Bio aSim Asimov Askdata AskMyClass, now Soundkins Aspect Aspect Aspire Aspora AssembleAssembledAssembly Assembly Assembly HOA AssemblyAI Asseta assistant-ui Assorted Bits Astek Diagnostics Aster Asteroid Astor Astranis Astro Astro Mechanica AstroForge Async Athelas AthenaHQ Atla Atlas Atlas Atlas Atlas Atlas Discovery AtlasGrid Atlia Atlog Atmana Atmo Atmos AtoB Atomarine Atomic Atomic Alchemy Atomic Industries Atomized atopile Atrato Atrium Attain attimet Attune Attunement Atum Works Auctomatic Auctor Audiobeta AudioFocus Audm Audobox Aurelian Auro Robotics AuroraQ Aurorin CAD autarc Authologic Authy Authzed AutoComputer Autodial prev Qwest AutoFi AutoHub Automat Automate Ads Automatic Automax.ai Automorphic Autone Autonomous Technologies Group AutoPallet Robotics Autosana AutoSitu Autostep Autotab Autumn Autumn AI Autumn Labs Auxos AvairSense Avalanche Avallon AI Avametric Avea Robotics Avent Avenue AveryIQ Avina Avion Avion School Aviron Interactive Avo Avoca Avoca Systems Avocademy Avocado Avoice Avora Avro Life Science Awari Awesometalk axal Axal AXDRAFT Axel Travel Axelrod Axial Axiom Axiom.ai AxionOrbital Space Axis Axis Axle Axle Health Axolo Axoni Axross Pte Ltd Azalea Robotics Corporation Backer BackerKit Backpack BackType Bagaveev Corporation Bakool Balance Balance Balanced Ballerine Balto Bamboo Banabo Bandit ML Bankjoy Banner Bannerman Baraka Barndoor BarSense Basalt Basedash BaseFrame Baseline AI Basement Basepilot Baserun Basilica Baubap Baud Bayes Bayes Impact Bayesline BBy Beacon Health Beacons Beam Beanstalk Bear Flag Robotics BeatDeck Beau BeeBettor Beek Beep Beeper BeeSafe AI Beetailer Beglaubigt.de BeGo Bellabeat Beluga Belvedir Belvo Bemlo Ben Benchify Benchling Benchmark Benepass Bensen Benson Bento Bentocart Berbix Berry Better Auth Better Opinions Betterhalf beU delivery BeWell Digital Beyond Aero Beyond Reach Labs Bezel Bharat X BHRD Bicycle AI Bidflow Bifrost BiggerPicture BIK Bikanta Bikry Bilanc Bild AI Billow AI Labs Bimaplan Binks Biobot Analytics Biocartesian Biocogniv Biodock Biographicon BIOS Health BioStack Platforms Birch Biosciences Bird Birdie Bistrobot Bitaccess Bitboard BiteSight Bitmovin Bitnami BitPatrol Bitplay bitrig Bitrise Bits Bits to AtomsBitSampleBitstack Bizmark Bizzy Bizzy AI BlackOakTV Blair Blaise Bland AI Blank Bio Blaxel Blaze Blaze Blee BlindPay Blink Blink Blissway Blitz Blitz Esports BlitzIQ Blitzllama Blixo Blockscope Blockspring Blockstamp Blok Bloom Bloom Bloom Bloom Institute of Technology BloomAPI BloomThat Bloomy Blue Blue Frog Gaming Blue Onion Blueberry Pediatrics Bluebirds Bluebook BlueCargo Bluecrew bluedoor Bluedot Bluejay Bluelight Bluesmart Bluma Blume Benefits Bluumbio Boardcave Bobidi Bodyport boitas.com BoldVoice Bolna AI Bolster Bolto Bond Bonfire Bonsai Booko BookSolid Booktrope Boom Boom AIBoom SupersonicBoost Biomes Boostable Boosted Boostly Booth AI BootLoop Bop.fm borong Bot MD BotBuilt BotCity Botin Boton Bottomless Bouncer Boundary Boundo Bountiful Bountii boxouse Boya Brace Bracket Brain Key Brainbase Labs Brainboard BrainHi BrainTripping Bramante Branch AI Branch8

Frequently asked questions

What stage does Y Combinator invest at?: Y Combinator invests at the Pre-Seed, Seed, Series A stages.
What is Y Combinator's typical check size?: Y Combinator typically writes checks of $500K.
What sectors does Y Combinator focus on?: Y Combinator focuses on Biotech, Climate Tech, Deep Tech, Robotics, SaaS, Sector Agnostic, Space Tech.
Where is Y Combinator located?: Y Combinator is headquartered in San Francisco, US.
Does Y Combinator lead rounds?: Y Combinator typically participates in rounds rather than leading them.

From the blog

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Y Combinator announced three senior partner appointments: Christopher Golda and Grey Baker as General Partners, Diana Hu as Managing Partner, and Harshita Arora as General Partner, expanding its leadership team with experienced founders and operators. AI summary

Christopher Golda and Grey Baker Join YC as General PartnersJun 2026Christopher Golda and Grey Baker were promoted to General Partners at Y Combinator after serving as Visiting Partners, bringing experience from founding BackType and Dependabot.Diana Hu Is YC's Newest Managing PartnerJun 2026Diana Hu was promoted to Managing Partner at Y Combinator after four years as a Group Partner, having worked with nearly 230 companies across 18 batches.Harshita Arora Joins YC as General PartnerApr 2026Harshita Arora joined Y Combinator as General Partner, bringing fintech and infrastructure expertise from co-founding AtoB, a financial services company for the trucking industry.

Media · Podcasts & interviews

featuring the team

Paul Graham on Why Sam Altman Took over as President of Y Combinator in 2014 - YouTube

This Week in Startups Clips · Paul Graham

Y Combinator's Paul Graham sits down with Jason at LAUNCH Festival 2014 - YouTube

This Week in Startups · Paul Graham

The social radar: Y Combinator’s secret weapon | Jessica Livingston (co-founder of YC, author) - YouTube

Lenny's Podcast · Jessica Livingston

Lessons from working with 600+ YC startups | Gustaf Alströmer (Y Combinator, Airbnb) - YouTube

Lenny's Podcast · Gustaf Alströmer

The New Physics of Business — Garry Tan, Y Combinator - YouTube

AI Engineer · Garry Tan

Paul Graham, Founder of Y Combinator, Live from Stockholm - YouTube

Y Combinator · Paul Graham

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