Industry
YC B2B Companies
3,278 Y Combinator b2b startups with verified founder contacts, batch info, and company data.
3,278
Companies
964
Active
10
Acquired
0
Public
YC Company Directory
50 companies
Company | Batch | Description | Status | Location | Team | Site | Founders | Reveal |
|---|---|---|---|---|---|---|---|---|
RunRL | X25 | Reinforcement learning as a service | Active | San Francisco, CA, USA | 2 | Andrew Gritsevskiy | Reveal | |
sieve | X25 | AI + human review to solve data cleaning - accessible via API or Excel | Active | New York City, NY, USA | 2 | Nicole Lu | Reveal | |
Sim | X25 | The AI Workspace for Building and Managing AI Agents. | Active | San Francisco, CA, USA | 8 | Emir Karabeg, Waleed Latif | Reveal | |
Sixtyfour | X25 | Intelligence Infrastructure on People and Entities | Active | San Francisco, CA, USA | 12 | Saarth Shah, Christopher Price | Reveal | |
StarSling | X25 | Self-Driving CI: fast AI-native GitHub Actions runners | Active | San Francisco, CA, USA | 3 | Yonas Beshawred, Daniel Worku | Reveal | |
stratify | X25 | AI agents that help you understand your customers' needs | Active | San Francisco, CA, USA | 2 | Siddhartha Javvaji, Pratham Hombal | Reveal | |
Theorem | X25 | Program verification so even your systems engineers can vibecode | Active | San Francisco, CA, USA | 4 | Jason Gross, Rajashree Agrawal | Reveal | |
Theta | X25 | Specialized AI for Every Job | Active | San Francisco, CA, USA | 7 | Rayan Garg, Tanmay Sharma, Gurvir Singh | Reveal | |
throxy | X25 | Vertical AI agents running B2B outbound on autopilot, with human SDRs | Active | London, England, United Kingdom | 55 | Bergen Merey, Arnau Ayerbe Garcia, Pablo Jimenez de Parga Ramos, Arnau Ayerbe Garcia | Reveal | |
Ticket Wallet | X25 | AI-optimized ticket resale | Active | New York City, NY, USA | 20 | Truman Gelnovatch, Ryan Clare | Reveal | |
Tinfoil | X25 | Encrypted AI with verifiable privacy | Active | San Francisco, CA, USA | 5 | Tanya Verma, Jules Drean, Sacha Servan-Schreiber | Reveal | |
Vesence | X25 | Cursor for Lawyers. Agentic AI in MS Office. | Active | Stockholm, Stockholm County, Sweden | 2 | Henrik Hansson, Ludvig Swanstrom | Reveal | |
Vybe | X25 | Secure internal apps. Built by AI in seconds. Powered by your data. | Active | San Francisco, CA, USA | 8 | Quang Hoang, Fabien Devos | Reveal | |
14.ai | W24 | AI Customer Service Agency for Your B2C Business | Active | San Francisco, CA, USA | 3 | Marie Schneegans, Michael Fester | Reveal | |
Abel | W24 | Transforming document review for litigation teams | Inactive | San Francisco, CA, USA | 2 | Sean Safahi, Chenyu Li | Reveal | |
Abel | W24 | Transforming document review for litigation teams | Inactive | San Francisco, CA, USA | 2 | Sean Safahi, Chenyu Li | Reveal | |
Aedilic | W24 | Open-Source AI-generated image/deepfake detection | Active | San Francisco, CA, USA | 2 | Nicholas Waltz, Lukas Schneider | Reveal | |
Aether | W24 | AI sales platform for home services | Active | San Francisco, CA, USA | 8 | Zayne Sagar, Shelby Bons | Reveal | |
Aftercare | W24 | Conversational AI surveys with intelligent follow-up questions | Active | San Francisco, CA, USA | 3 | Aidan Lee, Justin May, Anand Nanduri | Reveal | |
Agentic Labs | W24 | AI system design tools for dev teams | Active | New York City, NY, USA | 2 | Maksim Ivanov | Reveal | |
Alai | W24 | Create high quality presentations quickly using AI | Active | — | 5 | Anmol Sood, Krishna Gupta | Reveal | |
Alex | W24 | Your AI recruiter for interviewing and identifying the best talent | Active | San Francisco, CA, USA | 30 | Aaron Wang, John Rytel | Reveal | |
Andon Labs | W24 | Autonomous organizations without humans in the loop | Active | San Francisco, CA, USA | 8 | Lukas Petersson | Reveal | |
Artisan | W24 | AI employees called Artisans, starting with an AI BDR | Active | San Francisco, CA, USA | 37 | Jaspar Carmichael-Jack | Reveal | |
Artisan | W24 | The AI BDR for enterprise revenue teams, plus a full AI sales team | Active | San Francisco, CA, USA | 50 | Jaspar Carmichael-Jack | Reveal | |
Artos | W24 | Authoring documents for life sciences in minutes, not months. | Active | — | 7 | Josh Kim, Varun Patel | Reveal | |
Artos | W24 | Authoring documents for life sciences in minutes, not months. | Active | San Francisco, CA, USA | 7 | Josh Kim, Varun Patel | Reveal | |
atopile | W24 | We make tools to design electronics circuit boards with code | Active | San Francisco, CA, USA | 5 | Narayan Powderly, Matthew Wildoer | Reveal | |
Basepilot | W24 | AI coworkers to automate browser work, in minutes. | Active | San Francisco, CA, USA | 2 | Ken Hendricks, Pascal Wieler | Reveal | |
Basepilot | W24 | AI agents for insurance claims | Active | San Francisco, CA, USA | 2 | Ken Hendricks, Pascal Wieler | Reveal | |
BetterBasket | W24 | Smart grocery pricing with AI | Active | San Francisco, CA, USA | 5 | Leon Zhang, Vagelis Viskadouros | Reveal | |
Bilanc | W24 | AI-Powered Engineering Productivity | Active | — | 3 | Samuel Akinwunmi | Reveal | |
Bilanc | W24 | AI-Powered Engineering Productivity | Active | San Francisco, CA, USA | 3 | Samuel Akinwunmi | Reveal | |
Blacksmith | W24 | The fastest way to run your GitHub Actions | Active | — | 3 | Aditya (JP) Jayaprakash, Aditya Maru, Aayush Shah | Reveal | |
Brainbase Labs | W24 | The AI Labor Company | Active | San Francisco, CA, USA | 4 | Gokhan Egri | Reveal | |
Buster | W24 | AI platform for analytics engineering | Active | Salt Lake City, UT, USA | 4 | Blake Rouse, Dallin Bentley | Reveal | |
camelAI | W24 | Unlimited inference at $5 per stream | Active | San Francisco, CA, USA | 3 | Illiana Reed, Isabella Reed, Miguel Salinas | Reveal | |
Carma | W24 | The AI Operating System For Modern Fleets. | Active | San Francisco, CA, USA | 15 | Muhammad Alasgarli, Suleyman Alasgarli | Reveal | |
Carma | W24 | The AI Operating System For Modern Fleets. | Active | San Francisco, CA, USA | 15 | Muhammad Alasgarli, Suleyman Alasgarli | Reveal | |
Carousel Technologies | W24 | AI Assistant for Excel | Active | 205 W 76th St, New York, NY 10023, USA | 4 | Daniel Wolf, Jude Rizzo | Reveal | |
Celest | W24 | The Vercel of Flutter | Inactive | San Francisco, CA, USA | 1 | Dillon Nys | Reveal | |
Centauri AI | W24 | Helps teams work effectively with AI coding agents. | Active | San Francisco, CA, USA | 5 | He Lu, Milan Shen, James Wu | Reveal | |
Centralize | W24 | The relationship intelligence platform for enterprise revenue | Active | San Francisco, CA, USA | 9 | Rachit Kataria, Will Wang | Reveal | |
Centralize | W24 | The AI-powered deal collaboration platform for high ACV revenue teams | Active | San Francisco, CA, USA | 6 | Rachit Kataria, Will Wang | Reveal | |
Chunkr | W24 | Open source API service to parse complex documents | Active | — | 3 | Mehul Chadda, Ishaan Kapoor, Akhilesh Sharma | Reveal | |
Circleback | W24 | AI-powered meeting notes and automations | Active | San Francisco, CA, USA | 8 | Ali Haghani, Kevin Jacyna | Reveal | |
Clarum | W24 | AI agents for private market diligence, monitoring, and reporting | Active | San Francisco, CA, USA | 2 | Anton Otaner | Reveal | |
CloudCruise | W24 | The developer platform for fast and reliable browser agents | Active | San Francisco, CA, USA | 7 | Adrian Ziegler, Felix Martin Eckert | Reveal | |
CodeAnt AI | W24 | Autonomous offensive and defensive cybersecurity platform | Active | San Francisco, CA, USA | 25 | Amartya Jha, Chinmay Bharti | Reveal | |
CommodityAI | W24 | The AI operating system for commodity operations | Active | San Francisco, CA, USA | 6 | Philip Koenig, Daniel Cervoni, Kyle Franz | Reveal |
Status Breakdown
About YC B2B Companies
Y Combinator has funded 3,278 b2b companies since its founding in 2005. These startups span from early-stage pre-launch to publicly traded companies, making YC one of the most prolific backers of b2b innovation globally.
964 of these companies are currently active. 10 have been acquired. VCBacked tracks verified founder contact information, team sizes, and company status for every YC b2b startup.
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