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Y Combinator
Contact Database

Name: Y Combinator Company Database
Creator: VCbacked
License: https://www.vcbacked.co/terms

Verified cofounder emails for 4,150+ YC companies across 5 batches. Get access before Demo Day.

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YC Company Directory

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Company	Batch	Description	Status	Location	Team	Site	Founders	Reveal
10x Science	W26	The AI-native platform for next-generation protein characterization.	Active	San Francisco, CA, USA	3		David Roberts, Andrew Reiter, Vishnu Tejus	Reveal
1code (21st.dev)	W26	Orchestration layer for coding agents	Active	San Francisco, CA, USA	3		Serafim Korablev, Sergey Bunas	Reveal
Arcline	W26	Startup legal work handled by elite lawyers & same-day turnaround	Active	—	5		Pamir Ehsas, Stefan Mandaric	Reveal
ARC Prize Foundation	W26	AI benchmarks that measure general intelligence and inspire new ideas	Active	—	4		Greg Kamradt	Reveal
Arzule	W26	AI for B2B Partnerships	Active	San Francisco, CA, USA	2		Jeffrey Lin, Nikhil Reddy	Reveal
Asimov	W26	Internet-scale marketplace for robot training data	Active	San Francisco, CA, USA	3		Lyem Ningthou	Reveal
Aurorin CAD	W26	We help hardware companies ship faster	Active	San Francisco, CA, USA	1		Michael Baron	Reveal
AutoSitu	W26	AI-native workspace for municipal development review	Active	—	2		Xuanshu Lin, George Zhai	Reveal
Autumn AI	W26	Stalk your prospects at scale.	Active	San Francisco, CA, USA	2		Shiv Kampani, Vishnu Sampathkumar	Reveal
Avoice	W26	The AI Workspace For Architects	Active	San Francisco, CA, USA	4		Chawin Asavasaetakul, Chawit Asavasaetakul	Reveal
AxionOrbital Space	W26	Foundation models for 24/7 Earth Observation	Active	San Francisco, CA, USA	2		Atharva Peshkar, Dhenenjay Yadav	Reveal
Beacon Health	W26	AI Agents for Primary Care	Active	New York, NY, USA	2		Obinna Akahara, Mark Pothen	Reveal
BeeSafe AI	W26	Stopping Scams Before They Reach Your Customers	Active	San Francisco, CA, USA	3		Ariana Mirian, Daniel Spokoyny, Nikolai Vogler	Reveal
Beyond Reach Labs	W26	Space solar arrays that grow to the size of a football field in orbit	Active	—	2		Pele Collins, Mitchell Fogelson	Reveal
Booko	W26	Dynamic pricing for businesses that sell time slots	Active	San Francisco, CA, USA	2		Will Hall, Arjun Saluja	Reveal
Bubble Lab	W26	Prompt once, automate forever.	Active	—	2		Selina Li, Zach Zhong	Reveal
Burt	W26	Easily fine tune and deploy specialized models	Active	San Francisco, CA, USA	2		Kurt Sharma, Bobby Zhong	Reveal
Button Computer	W26	Button is the wearable AI that can talk.	Active	San Francisco, CA, USA	2		Chris Nolet, Ryan Burgoyne	Reveal
Byteport	W26	Global upload acceleration for 1GB-100TB files.	Active	San Francisco, CA, USA	1		Jayram Palamadai	Reveal
Canary	W26	The first AI QA engineer that understands your codebase	Active	San Francisco, CA, USA	4		Viswesh N G	Reveal
Cardboard	W26	Agentic video editor	Active	San Francisco, CA, USA	2		Saksham Aggarwal, Ishan Sharma	Reveal
Caretta	W26	Realtime AI for Sales Calls	Active	San Francisco, CA, USA	4		Kayra Bahadir, Omar Elamin, Pavlos Markesinis	Reveal
Cascade	W26	Making Autonomous Intelligence Safe & Reliable	Active	San Francisco, CA, USA	2		Adam AlSayyad, Haluk Cem Demirhan	Reveal
CatchBack Cards	W26	a platform for maximizing the thrill of collecting trading cards	Active	San Francisco, CA, USA	2		Sophia Kim, Joseph Zhang	Reveal
CellType	W26	The agentic drug company. We simulate human biology.	Active	New York, NY, USA	2		David van Dijk, Ivan Vrkic	Reveal
Chamber	W26	Autopiloting your AI infrastructure	Active	San Francisco, CA, USA	4		Charles Ding, Andreas Bloomquist, Jason Ong, Shaocheng Wang	Reveal
Chasi	W26	AI Revenue Engine for the Equipment Industry	Active	New York, NY, USA	2		Akash Pavan, Sarman Aulakh	Reveal
Coevolved	W26	Agents for Mortgage Origination	Active	—	2		Alex Li, Athan Zhang	Reveal
Compresr	W26	LLM-native context compression	Active	San Francisco, CA, USA	4		Berke Argin, Kamel Charaf, Oussama Gabouj, Ivan Zakazov	Reveal
CO Condor Energy	W26	Energy system enabling reliable, cheap and sustainable electricity…	Active	—	3	—	Jean Costa de Beauregard, Clément Grivel, Florian Pérocheau	Reveal
Constellation Space	W26	AI for space mission assurance.	Active	Seattle, WA, USA	4		Laith Altarabishi, Raaid Kabir, Kamran Majid, Omeed Tehrani	Reveal
Corelayer	W26	AI on-call engineer that debugs using data	Active	San Francisco, CA, USA	2		Shipra Jha, Mitch Radhuber	Reveal
Corvera	W26	Fully autonomous operations for CPG brands	Active	San Francisco, CA, USA	4		Dirk Breeuwer, Matthew Collins, Christopher Kong	Reveal
Crosslayer Labs	W26	Protect, monitor and defend your Internet presence	Active	San Francisco, CA, USA	3		Henry Birge-Lee, Grace Cimaszewski, Prateek Mittal	Reveal
Crow	W26	Let users control your app through chat	Active	San Francisco, CA, USA	2		Jai Bhatia, Aryan Vij	Reveal
Cumulus Labs	W26	The Optimized GPU Cloud	Active	San Francisco, CA, USA	2		Suryaa Rajinikanth, Veer Shah	Reveal
DAIVIN!	W26	Tankless Dive Gear - Breath Autonomy at Sea, Land & Space	Active	San Francisco, CA, USA	1		Leo Kankkunen	Reveal
Didit	W26	All-in-one identity platform for fast human verification.	Active	San Francisco, CA, USA	12		Alberto Rosas, Alejandro Rosas	Reveal
Ditto Biosciences	W26	Evolutionary therapies for autoimmune disease	Active	San Francisco, CA, USA	3		Adair Borges, Dennis Sun, Emily Weiss	Reveal
DroneTector	W26	Technology to detect and track hostile drones	Active	—	3		Thomas Doherty, Jordina Frances de Mas, Matthew Moore	Reveal
EigenPal	W26	AI Document Workflows for Enterprises	Active	San Francisco, CA, USA	—		Jedrzej Blaszyk, Matej Novak	Reveal
Emdash	W26	Open-source Agentic Development Environment	Active	San Francisco, CA, USA	2		Arne Strickmann, Raban von Spiegel	Reveal
End Close	W26	AI powered reconciliation for high-volume payments companies	Active	San Francisco, CA, USA	2		Sean Bolton, David Newell	Reveal
Fed10	W26	AI agents that replace your policy consultants	Active	San Francisco, CA, USA	3		Armand Iorgulescu, Zayan Islam, Winston Wei	Reveal
Fenrock AI (YC W26)	W26	The most powerful AI agents for Financial Crime Compliance	Active	San Francisco, CA, USA	2		Charu Sharma	Reveal
Fort	W26	Strength Tracking Wearable	Active	—	3		Miranda Nover, Paul Schneider, Zac Valles	Reveal
Forum	W26	The first regulated exchange to trade on attention.	Active	San Francisco, CA, USA	2		Owen Botkin, Joseph Thomas	Reveal
FullSeam	W26	FullSeam is an AI employee for finance and accounting teams.	Active	—	3		Aaron Coppa, Thomas Dowling, Geoff Segal	Reveal
FullSeam	W26	FullSeam is an AI employee for finance and accounting teams.	Active	—	3		Aaron Coppa, Thomas Dowling, Geoff Segal	Reveal
Galactic Resource Utilization Space, Inc. (GRU Space)	W26	Building the First Hotel on the Moon	Active	San Francisco, CA, USA	2		Skyler Chan	Reveal
General Legal	W26	The AI native law firm for growth stage companies	Active	—	3		J.P. Mohler, Javed Qadruddin, Ryan Walker	Reveal
Grade	W26	Payroll for performance	Active	San Francisco, CA, USA	2		Lotanna Ezeike, James Heaney	Reveal
GrazeMate	W26	Robot Cowboys that Herd Cattle with AI Drones	Active	San Francisco, CA, USA	4		Sam Rogers	Reveal
Haladir	W26	AI-Enabled Mainframe Modernization and Code Translation.	Active	San Francisco, CA, USA	4		Jibran Hutchins, Quan Huynh, Preston Schmittou, Joseph Tso	Reveal
Hex Security	W26	Agentic Offensive Security at Scale	Active	San Francisco, CA, USA	3		Huzaifa Ahmad, Ahmad Khan, Prama Yudhistira	Reveal
Hlabs	W26	Making an industrial supply chain for building robots in the USA	Active	Austin, TX, USA	1		Paul Hetherington	Reveal
Human Archive	W26	Multimodal data provider for robotics learning	Active	San Francisco, CA, USA	4		Rushil Agarwal, Samay Maini, Raj Patel, Shloke Patel	Reveal
IncidentFox	W26	AI SRE agent that triages, coordinates, and fixes production incidents	Active	San Francisco, CA, USA	2		Jimmy Wei, Long Yi	Reveal
Inviscid AI	W26	Real-time Building Simulations to Optimize Energy and Operational…	Active	San Francisco, CA, USA	2		Kabir Jain, Ziming Qiu	Reveal
Ishiki Labs	W26	Building the Future of Multimodal AI	Active	—	2		Robert Xu, Amit Yadav	Reveal
Jinba	W26	Automate any enterprise workflow through chat	Active	San Francisco, CA, USA	4		Shoya Matsumori, Takuya Norisugi	Reveal
Kita	W26	Turn documents into signals for lenders	Active	San Francisco, CA, USA	2		Carmel Limcaoco, Rhea Malhotra	Reveal
Kyten Technologies	W26	Custom aerospace-grade battery pack factory	Active	Seattle, WA, USA	2		Lucas Maddox, Cooper McBride	Reveal
Lance	W26	Your Hotel's Best Employees	Active	San Francisco, CA, USA	3		Gavin Brennen, Caleb Chan, Gatik Trivedi	Reveal
Laurence	W26	RL for performance marketing	Active	—	2		Matthew Chen, Leo Gierhake	Reveal
LegalOS	W26	The AI-powered law firm for complex work visas	Active	San Francisco, CA, USA	3		Matthew Asir, Rachel Asir, Claire Jutabha	Reveal
Lexius	W26	AI Crime Detection	Active	San Francisco, CA, USA	3		David Elskamp, Liam Webster	Reveal
Librar Labs	W26	The first and only AI-librarian.	Active	—	4		Jonathan Görtz, Carl-Hugo Jacobsson, Kaan Sirin	Reveal
Lucent	W26	AI that automatically watches your session replays to detect bugs.	Active	San Francisco, CA, USA	2		Alisa Rae	Reveal
Luel	W26	Turning everyday words and actions into usable training data.	Active	San Francisco, CA, USA	2		Inigo Lenderking, William Namgyal	Reveal
Mantis Biotechnology	W26	The Infrastructure Powering Human-In-Computer Models	Active	New York, NY, USA	3		Georgia Witchel	Reveal
Martini	W26	Collaborative AI-native filmmaking for professionals	Active	San Francisco, CA, USA	2		Long Hoang, Koh Terai	Reveal
Maven	W26	Payments for Voice AI Agents	Active	San Francisco, CA, USA	2		Wasi Ahmed, Brandon Boehme	Reveal
Maywood	W26	AI for M&A	Active	New York, NY, USA	5		Drake Goodman, Kent Goodman, Esteban Vizcaino	Reveal
Mendral	W26	AI DevOps Engineer	Active	San Francisco, CA, USA	2		Sam Alba, Andrea Luzzardi	Reveal
Moda	W26	Sentry for AI.	Active	San Francisco, CA, USA	2		Mohammed Al-Rasheed, Pranav Bedi	Reveal
MouseCat	W26	The AI Toolkit for Risk Teams	Active	New York, NY, USA	2		Nicholas Aldridge, Joseph McAllister	Reveal
o11	W26	The Most Integrated M365 AI Suite	Active	San Francisco, CA, USA	4		Aryah Oztanir, Ajay Misra	Reveal
OctaPulse	W26	Robotics and computer vision to automate fish farming from hatchery…	Active	—	2		Paul Grech, Rohan Singh	Reveal
Opalite Health	W26	Solving language barriers in healthcare	Active	Palo Alto, CA, USA	3		Cathleen Kuo, Alex Mehregan	Reveal
Origami Robotics	W26	Manipulate Anything Robot	Active	Millbrae, CA, USA	5		Ryan Xie, Quanting(Daniel) xie	Reveal
Orthogonal	W26	Agentic Payments for APIs	Active	San Francisco, CA, USA	2		Christian Pickett, Bera Sogut	Reveal
Overshoot	W26	Enable developers to build and run AI vision applications	Active	San Francisco, CA, USA	2		Younes El hjouji, Zakaria El hjouji	Reveal
Oximy	W26	The system of record for enterprise AI usage.	Active	San Francisco, CA, USA	5		Naman Ambavi	Reveal
Oxus	W26	AI-powered automation for internal audit workflows	Active	San Francisco, CA, USA	3		Janet Liu, Melinda Liu, Christine Watts	Reveal
Panta	W26	Commercial insurance brokerage run by AI agents. Scales like software.	Active	San Francisco, CA, USA	4		Vincent Chen, Frank Wang	Reveal
Patientdesk.ai	W26	AI voice agent for patient calls & admin workflows	Active	—	3		Emre Kaplaner, Fikri San Koktas, Oncel Ozgul	Reveal
Pax Historia	W26	The first AI-powered grand strategy platform	Active	San Francisco, CA, USA	3		Eli Bullock-Papa, Ryan Zhang	Reveal
Perfectly	W26	The AI-native Recruiting Operating System	Active	San Francisco, CA, USA	3		Victor Luo, Zhuang (Gary) Luo	Reveal
Piris Labs	W26	Inference at Light Speed	Active	San Francisco, CA, USA	2		Ali Khalatpour, Keyvan Moghadam	Reveal
Pocket	W26	The world's best AI note-taking device and app	Active	—	6		Gabriel Dymowski, Akshay Narisetti	Reveal
Pollen	W26	AI Agents for Customer Success	Active	San Francisco, CA, USA	3		Aldrin Ong, Noah Yin, Jeffrey Yum	Reveal
Pollinate	W26	AI Agents for the supply chain.	Active	San Francisco, CA, USA	2		Corey Berther, Adeep Mitra	Reveal
Polymath	W26	Long-horizon RL	Active	San Francisco, CA, USA	2		Dylan Ma, Naren Yenuganti	Reveal
Polymorph	W26	AI that catches intent & churn live, then acts faster than a human can	Active	—	3		David Nie, Manas Purohit, Andrew Sy	Reveal
Prana	W26	An AI primary care doctor in your pocket	Active	San Francisco, CA, USA	4		Sanjit Menon, Meer Patel, Vishvam Rawal	Reveal
Protent	W26	Protent turns passive surveillance into proactive intelligence.	Active	San Francisco, CA, USA	2		Srihan Balaji, Abhisheik Sharma	Reveal
Proximitty	W26	Autonomous loan servicing and collections	Active	San Francisco, CA, USA	2		Wye Yew Ho, Zi Zhang	Reveal
Q2Q	W26	We help private equity teams find acquisition targets faster	Active	San Francisco, CA, USA	2		Brianna Lin, Claire Wu	Reveal
RamAIn	W26	Super fast computer-use agents to automate complex workflows.	Active	San Francisco, CA, USA	2		Shourya Vir Jain, Vansh Ramani	Reveal
Reframe	W26	AI agents to automate hardware procurement	Active	San Francisco, CA, USA	2		Eric Wiener, Bryan Zin	Reveal
Remy AI	W26	Automating dexterous tasks in warehouses	Active	San Francisco, CA, USA	2		Oscar Brisset, Ben Kaye	Reveal
Resonate	W26	The first AI-native messaging platform.	Active	—	0		Sam Kaplan	Reveal
Ressl AI	W26	AI Transformation for the Trades	Active	San Francisco, CA, USA	4		Abhishek E, Arushi Gandhi	Reveal
Return Signals	W26	AI luxury concierge for E-commerce brands	Active	San Francisco, CA, USA	2		Ilya Valmianski, Alejandro Zaniolo	Reveal
REV1	W26	Shortening hardware design cycles by automating post-CAD work	Active	San Francisco, CA, USA	2		Louis Liu, Alex Rivero	Reveal
Ritivel	W26	AI-native platform for regulatory document submission	Active	San Francisco, CA, USA	3		Nirmit Arora, Gunin Gupta, Pavan Kalyan (a.k.a PK) Tankala	Reveal
Robby	W26	Agentic revenue growth for home service businesses.	Active	San Francisco, CA, USA	3		Feroze Mohideen, Joseph Schwarzmann	Reveal
RoboDock	W26	Robots that run autonomous depots for autonomous fleets.	Active	San Francisco, CA, USA	2		Celine Wang, Zinny Weli	Reveal
Ruma Care	W26	We help clinics get patients on biologics faster	Active	San Francisco, CA, USA	2		Christina Huang, Meng Fei Shen	Reveal
RunAnywhere	W26	The default way of running On-Device AI at Scale	Active	—	2		Shubham Malhotra, Sanchit Monga	Reveal
Salus	W26	Guardrails to validate your agent's actions before they execute	Active	San Francisco, CA, USA	2		Kevin Pan, Vedant Singh	Reveal
Samora AI	W26	Multilingual voice agents with safe human escalation when needed	Active	San Francisco, CA, USA	8		Vineeth Kumar, Kartik Sawhney, Shakul Raj Sonker	Reveal
Scout Out	W26	AI generated proposals for residential construction projects	Active	San Francisco, CA, USA	1		Nolan Rossi	Reveal
Seeing Systems	W26	AI Drone Systems for Defence	Active	—	2		Alexander Le Maitre, Matthew Le Maitre	Reveal
Sentrial	W26	Production Monitoring for AI Products	Active	San Francisco, CA, USA	2		Neel Sharma, Anay Shukla	Reveal
Sequence Markets	W26	Smarter and faster trade execution for digital assets	Active	New York, NY, USA	5		Muhammad Awan, Peter Bai	Reveal
Servo7	W26	Simple and rapidly deployed robots for industry work	Active	Amsterdam, Netherlands	—		Pieter Becking, Jasper van Leuven	Reveal
Shofo	W26	Common Crawl for Video	Active	San Francisco, CA, USA	4		Bryan Hong, Andre Braga, Braiden Dishman, Alexzendor Misra	Reveal
SideKit	W26	One package to take your mobile app to production.	Active	San Francisco, CA, USA	2		Ethan Pronev, Ashish Selvaraj	Reveal
sitefire	W26	Marketing suite for the agentic web	Active	San Francisco, CA, USA	2		Vincent Jeltsch, Jochen Madler	Reveal
Skillsync	W26	Find anyone in open source	Active	San Francisco, CA, USA	2		Narayana Aaditya Ganeshkumar, Nishant Joshi	Reveal
Sonarly	W26	AI engineer to triage and fix your production alerts	Active	San Francisco, CA, USA	2		Dimittri Choudhury, Alexandre Klobb	Reveal
SpotPay	W26	Cross-border Personal Finance on Stablecoins	Active	San Francisco, CA, USA	2		Thomas Cesare-Herriau, Zsika Phillip	Reveal
Squid	W26	AI-powered grid planning in your browser 🦑 (squid.energy)	Active	San Francisco, CA, USA	2		Conor Jones, George Kolokotronis	Reveal
Stilta	W26	Cursor for patent attorneys	Active	San Francisco, CA, USA	4		Oscar Adamsson, Oskar Block, Tobias Estreen, Petrus Werner	Reveal
Strand AI	W26	Curated multimodal datasets for biology AI	Active	San Francisco, CA, USA	2		Yue Dai, Oded Falik	Reveal
Synthetic Sciences	W26	AI co-scientists that run research end-to-end	Active	—	2		Aayam Bansal, Ishaan Gangwani	Reveal
Tensol	W26	AI Employees for your Business, Powered by OpenClaw	Active	San Francisco, CA, USA	2		Oliviero Pinotti, Pratik Satija	Reveal
Terminal Use	W26	Vercel for background agents	Active	San Francisco, CA, USA	4		Filip Balucha, Stavros Filosidis, Vivek Raja	Reveal
Traverse	W26	Data research company building RL envs for non-deterministic work	Active	San Francisco, CA, USA	2		Lance Yan, Zachary Yu	Reveal
Travo	W26	We use AI to collect and analyze real estate data	Active	San Francisco, CA, USA	4		Clarence Chen, Alexander Calafiura, Michael Dalva, Ashwin Sriram	Reveal
Unifold	W26	Multi-chain deposit and payment infrastructure	Active	New York, NY, USA	3		Hau Chu, Timothy Chung, Quang Huynh	Reveal
Unisson	W26	The AI product specialist for customer-facing teams	Active	San Francisco, CA, USA	2		Varun Mathur, Tom Achache	Reveal
Valgo	W26	Algorithmic safety validation tools for autonomy.	Active	San Mateo, CA, USA	2		Robert Moss, Sydney Katz	Reveal
Vela	W26	The AI Scheduling Assistant that truly knows you.	Active	San Francisco, CA, USA	4		Gobhanu Sasankar Korisepati, Saatvik Suryajit Korisepati	Reveal
Velum Labs	W26	Firewall that controls access to information across AI and humans	Active	San Francisco, CA, USA	2		Benjamin Muñoz-Cerro, Alen Rubilar-Muñoz	Reveal
Verdex	W26	Asset Intelligence for Farmland	Active	San Francisco, CA, USA	2		Jad Bousselham, Evan Rankin	Reveal
Veriad	W26	AI compliance officers	Active	San Francisco, CA, USA	2		Rohan Mahendraker, Anton Muratov	Reveal
Visibl Semiconductors	W26	AI agents for chip design.	Active	San Francisco, CA, USA	2		Jordon Kashanchi, Bryce Neil	Reveal
Voltair	W26	Self Charging Drones	Active	San Francisco, CA, USA	5		Hayden Gosch, Avi Gotskind, Ronan Nopp, Warren Weissbluth	Reveal
Voxel Energy	W26	Energy independent data centers with solar and repurposed batteries.	Active	—	3		Max Pfeiffer, Evan Schmidt, Casey Spencer	Reveal
VOYGR	W26	Real-world place intelligence for AI apps and agents	Active	—	—		Vlad Baskakov, Yarik Markov	Reveal
Wayco	W26	AI operator for legal case referrals	Active	—	1		Iqbol Temirkhojaev	Reveal
Wideframe	W26	AI agent for video creative agencies	Active	San Francisco, CA, USA	2		Daniel Pearson, Zachary Kim	Reveal
Zatanna	W26	Adaptive Healthcare Admin Agents	Active	San Francisco, CA, USA	3		Alex Blackwell, Rithvik Vanga, Tarun Vedula	Reveal
ZeroSettle	W26	Bypass the App Store tax and enable web-based purchases	Active	—	2		Ryan Elliott, Gabe Roeloffs	Reveal
Zymbly	W26	Automates admin for aircraft technicians	Active	—	3		Robbie Bourke, Azmat Habibullah, Ben Jacob	Reveal
a0.dev	W25	We make mobile apps using AI.	Active	San Francisco, CA, USA	3		Seth Setse, Ayomide Omolewa	Reveal
A1Base	W25	Twilio for AI Agents	Active	San Francisco, CA, USA	2		Pennie Huang	Reveal
Adam	W25	AI Powered CAD	Active	San Francisco, CA, USA	4		Zach Dive, Aaron Li	Reveal
AfterQuery	W25	Research lab investigating the boundaries of AI capabilities.	Active	San Francisco, CA, USA	20		Danny Tang, Carlos Georgescu, Spencer Mateega	Reveal
Agentin AI	W25	AI Agents that automate enterprise software processes	Active	San Francisco, CA, USA	2		Sankeerth Rao Karingula	Reveal
Alice.tech	W25	AI-driven exam prep	Active	Copenhagen, Denmark	5		Kim Rants	Reveal
Altrina	W25	The SOP Automation Platform	Active	Menlo Park, CA, USA	4		Mo Nasir, Harvey Hu	Reveal
Amby Health	W25	AI Copilot for Ambulance Agencies (EMS)	Active	San Francisco, CA, USA	2		Yos Wagenmans, Timmy Dang	Reveal
Archon	W25	We help software companies sell to government.	Active	San Francisco, CA, USA	3		George Parks	Reveal
Artificial Societies	W25	We use AI to simulate entire human societies	Active	San Francisco, CA, USA	3		James He, Patrick Sharpe	Reveal
assistant-ui	W25	Open Source React.js Library for AI Chat	Active	San Francisco, CA, USA	3		Simon Farshid	Reveal
Asteroid	W25	AI Browser Agents for the Back-Office	Active	San Francisco, CA, USA	4		David Mlcoch, Joe Hewett	Reveal
Astro	W25	The world’s first AI energy developer	Active	—	1		Alex Fuster	Reveal
AthenaHQ	W25	Get Your Brand Discovered on AI Search.	Active	San Francisco, CA, USA	12		Andrew Yan, Alan Yao	Reveal
awen	W25	We are rebuilding photoshop with an AI-voice interface.	Active	—	3		Thibault Henriet	Reveal
Axal	W25	Automate Data Entry From Inbox to ERP	Active	San Francisco, CA, USA	2		Samai Patel, Nand Vinchhi	Reveal
Axiom	W25	Trade memecoins, perpetuals, and earn yield.	Active	—	2		Henry Zhang, Preston Ellis	Reveal
Bezel	W25	Digital AI humans that model clothes for e-commerce brands.	Active	New York, NY, USA	1		Kashyap Achar	Reveal
Bild AI	W25	AI that understands construction blueprints	Active	San Francisco, CA, USA	5		Roop Pal, Puneet Sukhija	Reveal
Bindwell	W25	Discovering new pesticides with AI	Active	San Francisco, CA, USA	4		Tyler Rose, Navvye Anand	Reveal
BlindPay	W25	Stablecoin API for global payments	Active	—	4		Bernardo Simonassi, Joao Borges, Gabriel Lyra, Gustavo Marinho	Reveal
Bluebook	W25	AI for accounting	Active	San Francisco, CA, USA	4		Philip Andersson, Filip Stål	Reveal
Browser Use	W25	Leading open-source web agent project with 50k stars in 3 months	Active	San Francisco, CA, USA	7		Magnus Müller, Gregor Zunic	Reveal
Butter	W25	Muscle Memory Cache for Agents	Active	—	2		Erik Dunteman	Reveal
Bystreet	W25	Find your next hospitality deal.	Active	San Francisco, CA, USA	4		Charlie Maki, Corey Anderson, Cameron Hake	Reveal
Calltree	W25	Enterprise-grade AI support reps for call centers	Active	San Francisco, CA, USA	6		Kun Qian, Robertson Taylor	Reveal
Candid	W25	The hiring platform for exceptional talent	Active	—	2		Rami Ghanem	Reveal
Candor	W25	We help companies win government funding with AI	Active	San Francisco, CA, USA	2		Marcus Zimmerman, Ethne Laude	Reveal
Cardamon	W25	AI compliance co-pilot for regulated financial businesses	Active	San Francisco, CA, USA	2		Areg Nzsdejan, Dmytro Astakhov	Reveal
careCycle	W25	Voice AI teams for medicare agencies.	Active	San Mateo, CA, USA	4		Alex Doonanco, Evan Roubekas	Reveal
Caseflood.ai	W25	the AI inbound sales team for law firms	Active	San Francisco, CA, USA	3		Ethan Hilton, Tolen Schreid	Reveal
Cedar	W25	The open source copilot for any app	Active	—	2		Jesse Li, Isabelle Ilyia	Reveal
Cenote	W25	AI agents that convert and retain patients for digital clinics	Active	San Francisco, CA, USA	3		Kofi Ansong, Kristy Gao	Reveal
Cifrato	W25	AI Accountant for Accounting Firms	Active	Bogotá, Bogota, Colombia	13		Juan Pisco	Reveal
Closure	W25	We help law enforcement solve crime	Active	New York, NY, USA	4		Aaron Zelinger, Gilad Levy	Reveal
Confident AI	W25	The Leading LLM Eval and Observability Platform for AI Quality	Active	San Francisco, CA, USA	7		Jeffrey Ip, Kritin Vongthongsri	Reveal
Conntour	W25	AI to monitor thousands of security cameras.	Active	—	6		Matan Goldner, Tomer Kulla	Reveal
Contrario	W25	Fill critical roles faster with AI-empowered recruiters	Active	San Francisco, CA, USA	10		Arya Marwaha, Aditya Sood	Reveal
CopyCat	W25	AI-Powered Automation to Transform Your Back Office	Active	San Francisco, CA, USA	2		Graham Sabin, Abhi Balijepalli	Reveal
Corsair	W25	The TypeScript Integration ORM	Active	New York, NY, USA	2		Dev Jain	Reveal
Cuckoo Labs	W25	Real-time AI translator for global sales and marketing	Active	—	2		Yong Hee Lee, Gunwoo Kim	Reveal
Dalus	W25	AI-Powered Hardware System Design Software	Active	—	3		Sebastian Völkl, Eliot Khachi	Reveal
Dartboard Energy	W25	AI Analyst for Electricity Markets	Active	San Francisco, CA, USA	2		Rohun Ati	Reveal
Delineate	W25	Agents for Accelerated Clinical Trial Design	Active	Boston, MA, USA	20		Emily Nieves, Jawad Iqbal	Reveal
Dollyglot	W25	Character.AI with real time video avatars	Active	San Francisco, CA, USA	2		Thomas Minassian, Paul-Henri Biojout	Reveal
Edexia	W25	AI Teacher Assistant for Grading Essays	Active	San Francisco, CA, USA	4		Daniel Gibbon, Nathan Wang	Reveal
Egress Health	W25	Automated revenue cycle management, starting with dentists	Acquired	—	2		Alex Pedersen	Reveal
Enhanced Radar	W25	AI for air traffic control	Active	San Francisco, CA, USA	2		Eric Button, Kristian Gaylord	Reveal
Ergo	W25	AI Agents for Revenue Teams	Active	San Francisco, CA, USA	0		Yash Dulla, Ishan Sheth	Reveal
Excellence Learning	W25	AI tutor starting with maths and science	Active	Stanford, CA, USA	4		Sovann Linden, Alexis Bonnafont, Mattia Mauro	Reveal
Exin Therapeutics	W25	AI drug discovery platform for neurotherapeutics	Active	San Francisco, CA, USA	3		Gabriel Ocana Santero, Ivan Lazarte, Marko Tvrdic	Reveal
Exla	W25	An SDK to run transformer models anywhere	Active	—	0		Pranav Nair, Viraat Das	Reveal
finbar	W25	The AI investment analyst	Active	—	4		Edward Huang, Robin Gan	Reveal
Fira	W25	Financial research platform for investment firms	Active	—	4		Alex Tkachenko, Alexey Taktarov	Reveal
Flowtel	W25	The AI Voice agents for hotels	Active	San Francisco, CA, USA	5		Eylon Miz	Reveal
FuseAI	W25	The only outbound sales software you will ever need.	Active	—	8		Saurav Bubber, Imogen Low	Reveal
Gale	W25	Fast and Data-Driven Immigration Platform	Active	San Francisco, CA, USA	3		Rahul Gudise, Haokun Qin, Rishabh Sambare	Reveal
General Trajectory	W25	AI for the physical world	Active	San Francisco, CA, USA	1		Joshua Belofsky	Reveal
G LNK	W25	Simplifying Collaboration for Healthcare Organizations & Professionals	Active	New York, NY, USA	2		Rayan Ghandour, Raouf Abujaber	Reveal
GradeWiz	W25	AI Grading for Teachers	Active	San Francisco, CA, USA	2		Max Bohun	Reveal
Haleum	W25	Human Risk Intelligence for the AI-era	Active	San Francisco, CA, USA	3		Adarsh Ambati, Ansh Gupta, Aditya Iyengar	Reveal
Harbera	W25	AI Healthcare Provider Credentialing Software	Active	San Francisco, CA, USA	2		Sophia Clark, Veronica Nutting	Reveal
Harper	W25	AI-native commercial insurance brokerage	Active	San Francisco, CA, USA	25		Dakotah Rice, Tushar Nair	Reveal
Hey Telo	W25	Voice AI for Home Services	Active	—	2		Christopher Grittner, Daniel Grittner	Reveal
hud	W25	Platform for building RL environments and evals	Active	San Francisco, CA, USA	5		Jay Ram, Lorenss Martinsons	Reveal
Infinite	W25	Global B2B Stablecoin Processor	Active	San Francisco, CA, USA	4		Nikhil Srinivasan, Raj Lad	Reveal
Instinct	W25	Building lunar landers	Active	—	4		Alex Pinel Neparidze, Joaquim Dickson, Ashwin Iyer	Reveal
Inversion Semiconductor	W25	Manufacturing the most powerful chips, 15x faster	Active	San Francisco, CA, USA	5		Rohan Karthik, Daniel Vega	Reveal
Invo	W25	AI-Powered Collections Platform for Food Distributors	Active	—	2		Patrick Foster	Reveal
Karoo	W25	Canadian neobank focused on lending	Active	Toronto, ON, Canada	3		Hugo Markland, Jeanot Dawson, Oliver Lambson	Reveal
Karsa	W25	Stablecoin neobank for emerging markets	Active	New York, NY, USA	2		Shahryar Hasnani, Dale Wilson	Reveal
Leaping AI	W25	Voice AI agents to automate call centers (digital call center workers)	Active	San Francisco, CA, USA	8		Kevin Wu, Arkadiy Telegin	Reveal
Lightbox	W25	Cursor for Content Creation	Active	San Francisco, CA, USA	2		Alexandru Turcanu, Dylan Player	Reveal
Lopus AI	W25	Data Unification for GTM Analytics	Active	San Francisco, CA, USA	2		Aamish Ahmad Beg, Danylo Borodchuk	Reveal
Lucid	W25	interactive video models	Active	—	3		Rami Seid	Reveal
Lucidic AI	W25	AI Agent Training via Simulations	Active	San Francisco, CA, USA	4		Abhinav Sinha, Andy Liang, Jeremy Tian	Reveal
Macadamia	W25	AI Agents for Complex Engineering Projects	Active	—	2		Abel Van Steenweghen, Brecht Pierreux	Reveal
Maive	W25	AI for Home Services	Active	San Francisco, CA, USA	2		David Tondreau, Will Cray	Reveal
Maritime Fusion	W25	Fusion reactors for ships	Active	—	6		Justin Cohen, Jason Kaufmann	Reveal
Mastra	W25	The Javascript framework for building AI agents, from the Gatsby devs	Active	—	8		Sam Bhagwat, Abhi Aiyer, Shane Thomas	Reveal
Mecha Health	W25	Foundation models to automate x-ray analysis for radiologists	Active	San Francisco, CA, USA	4		Ahmed Abdulaal, Hugo Fry, Ayodeji Ijishakin, Nina Montaña Brown	Reveal
Mentra	W25	Building the open source smart glasses operating system.	Active	San Francisco, CA, USA	12		Cayden Pierce, Alexander Israelov	Reveal
Mercura	W25	AI Quote and Order Automation for Distributors & Manufacturers	Active	—	14		Lukas Bock, Stefan Zheng	Reveal
Misprint	W25	Misprint is building Robinhood for Pokemon cards	Active	New York, NY, USA	5		Eva Herget	Reveal
Miyagi Labs	W25	AI tutors for exam prep	Active	—	2		Tyrone Davis III, Guang Cui	Reveal
Mosaic	W25	Agentic video editing	Active	San Francisco, CA, USA	3		Adish Jain, Kyle Wade	Reveal
Mundo AI	W25	High Quality Multilingual Training Data for AI Models	Active	San Francisco, CA, USA	4		Jason Liao, Naijide Anwaer, Garreth Lee, Kenneth Wu	Reveal
Nitrode	W25	AI game development engine & platform	Active	—	4		Ben Kim, Sejoon Chang, Brian La	Reveal
Oki	W25	Personalized Updates on Company Progress	Active	San Francisco, CA, USA	2		Luofei Chen, Aayush Tyagi	Reveal
Olive	W25	The context layer for your team	Active	San Francisco, CA, USA	2		Bardia Safari, Shrey Gupta	Reveal
Onlook	W25	Cursor for Designers	Active	San Francisco, CA, USA	2		Daniel Farrell	Reveal
OpenIntake	W25	The AI Front Door For Law Firms	Active	New York, NY, USA	2		Yash Sahota, Grayson Pike	Reveal
Operand	W25	AI to run Business Strategy	Active	San Francisco, CA, USA	5		Ram Gorthi, Akhil Iyengar, Arjun Sahney	Reveal
Optifye.ai	W25	AI performance monitoring for factory workers	Active	San Francisco, CA, USA	3		Vivaan Baid, Kushal Mohta	Reveal
Orbital Operations	W25	High Thrust Space Vehicles for Satellite Defense	Active	—	2		Ben Schleuniger, Ross Doherty	Reveal
Orchids	W25	AI App Builder	Active	—	6		Kevin Lu, Bach Tran	Reveal
Osmosis	W25	Reinforcement Learning for AI Agents	Active	—	6		Kasey Zhang, Andy Lyu	Reveal
Outlit	W25	Account-level Customer Journey	Active	San Francisco, CA, USA	2		Josh Earle, Leo Paz	Reveal
Overstand Labs	W25	We help companies find and leverage the needles in their data haystack	Active	—	4		Mihir Patil, Derrick Cheng	Reveal
Ovlo	W25	AI agents for supply chain workflow automation	Active	San Francisco, CA, USA	2		Andrew Malouf, Amer Eid	Reveal
Paratus Health	W25	Medical Voice Agents for Patient Management	Active	Menlo Park, CA, USA	6		Pablo Bermudez-Canete, Tannen Hall	Reveal
Pave Robotics	W25	Robots that repair roads	Active	—	3		Josh Kelly, Mason Landon Smith	Reveal

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B2B641 Engineering, Product and Design139 Industrials89 Consumer80 Healthcare78 Fintech65 Infrastructure64 Productivity38 Manufacturing and Robotics30 Operations26 Healthcare IT24 Supply Chain and Logistics24 Finance and Accounting24 Sales24 Real Estate and Construction23

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YC Outreach Guides

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Frequently Asked Questions

How many Y Combinator companies are in this database?

We track 4,150+ Y Combinator-backed companies across all batches, from the earliest YC cohorts to the most recent. Updated monthly.

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The most recent batch in our database is W26. New batches are added shortly after Demo Day, typically within a few days.

How many companies has YC funded?

Y Combinator has funded over 4,150 companies since 2005 across 5 batches. This includes 908 currently active companies, 41 acquired companies, and 0 publicly traded companies.

What industries does YC invest in?

YC invests across a wide range of industries. The top sectors include B2B, Engineering, Product and Design, Industrials, Consumer, Healthcare, and more. Browse our industry pages for complete breakdowns.

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What is the YC acceptance rate?

Y Combinator accepts roughly 1-2% of applicants each batch, making it one of the most selective startup accelerators in the world. Each batch typically includes 200-300 companies selected from over 20,000 applications.

How much does YC invest per company?

Y Combinator invests $500,000 in every company it funds: a $125,000 investment for 7% equity, plus a $375,000 investment on an uncapped SAFE. Companies also get access to mentorship, the YC alumni network, and Demo Day exposure to top investors.

What are the most successful YC companies?

Some of the most successful YC companies include Stripe, Airbnb, DoorDash, Coinbase, Instacart, Reddit, Dropbox, and Twitch. View our top companies page for a complete ranking by team growth and status.

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Y CombinatorContact Database