Industry

YC B2B Companies

3,278 Y Combinator b2b startups with verified founder contacts, batch info, and company data.

3,278

Companies

964

Active

Acquired

Public

YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
Luminal	S25	Making AI run fast on any hardware.	Active	San Francisco, CA, USA	7	Joe Fioti, Matthew Gunton, Jake Stevens	Reveal
Magnetic	S25	AI Tax Preparer for CPA firms	Active	—	2	Thomas Shelley, Patrick Fay	Reveal
Magnetic	S25	AI Tax Preparer for CPA firms	Active	San Francisco, CA, USA	10	Thomas Shelley, Patrick Fay	Reveal
MangoDesk	S25	RL environments for software engineering	Active	San Francisco, CA, USA	2	Ankith Subramanya, Ananth Subramanya	Reveal
Manufact	S25	Cloud infrastructure for MCP servers and Claude / ChatGPT apps.	Active	San Francisco, CA, USA	6	Pietro Zullo, Luigi Pederzani	Reveal
Metis	S25	Infrastructure to build reliable agents	Acquired	San Francisco, CA, USA; Remote	13	Aryan Shah, Aayush Sheth, Marcus Yearwood	Reveal
Mimos	S25	Helping companies rank in AI search	Active	—	2	Rohit Sirosh, Michael Korovkin	Reveal
Minimal AI	S25	AI Agents for E-commerce Customer Support	Active	Amsterdam, NH, Netherlands	3	Niek Hogenboom, Titus Ex	Reveal
Modelence	S25	Build production-ready apps with AI	Active	San Francisco, CA, USA; Remote	3	Aram Shatakhtsyan, Eduard Piliposyan	Reveal
Monarcha	S25	Turn maps into data	Active	San Francisco, CA, USA	2	James Spokes, Everett Lee	Reveal
Monte	S25	Continual Learning for Agents	Active	San Francisco, CA, USA	3	Henry Bae, Alex Fleury, Jamin Liu	Reveal
Motives	S25	Consumer focus groups run by AI	Active	London, England, United Kingdom	—	Sean Conley, Sam Stoll	Reveal
Nautilus	S25	AI platform to grow and to optimize car washes	Active	San Francisco, CA, USA	4	Amayr Babar, Ali Sareini	Reveal
Nixo	S25	Make every FDE on your team capable of moving any account forward.	Active	San Francisco, CA, USA	6	Priya Khandelwal, Priti Rangnekar	Reveal
Notte	S25	Reliable Web Agents for Enterprise	Active	San Francisco, CA, USA	5	Andrea Pinto, Lucas Giordano	Reveal
Notte	S25	Reliable Web Agents for Enterprise	Active	San Francisco, CA, USA	5	Andrea Pinto, Lucas Giordano	Reveal
Nozomio	S25	Context augmentation for agents	Active	—	1	Arlan Rakhmetzhanov	Reveal
Nuntius	S25	Making Models Follow Rules.	Inactive	San Francisco, CA, USA	2	Abhijay Rana	Reveal
Okibi	S25	Turns products into CLIs and agents into customers	Active	San Francisco, CA, USA	2	Mahyad Ghassemi, Saurav Mitra, Mahyad Ghassemibouyaghchi	Reveal
Omnara	S25	The Open-Source Alternative to Claude Managed Agents	Active	San Francisco, CA, USA	4	Ishaan Sehgal, Kartik Sarangmath	Reveal
OnDeck AI	S25	Analyze any footage, without training a model	Active	Vancouver, BC, Canada	7	Alexander Dungate, Sepand Dyanatkar	Reveal
OnDeck AI	S25	Analyze any footage, without training a model	Active	Vancouver, BC, Canada	5	Alexander Dungate, Sepand Dyanatkar	Reveal
Orange Slice	S25	Agentic sales enrichment spreadsheet	Active	San Francisco, CA, USA	2	Vihaar Nandigala, Kishan Sripada	Reveal
Outrove	S25	Ultra-realistic AI Recruiter	Active	San Francisco, CA, USA	2	Ahmed ElShireef, Saif Elhager	Reveal
Outrove	S25	Synthetic populations for decisions	Active	San Francisco, CA, USA	2	Ahmed ElShireef, Saif Elhager	Reveal
Palace	S25	Palace plans, coordinates, and executes daily ops for trucking fleets	Active	New York, NY, USA	2	Leeds Rising, Derek Ye	Reveal
Pally	S25	Your personal AI Assistant	Active	San Francisco, CA, USA	2	Haz Hubble, Wyatt Lansford	Reveal
Paloma	S25	Digital transformation for real economy businesses	Active	San Francisco, CA, USA	3	Nazli Danis, Alex Avnit	Reveal
Panels	S25	Audio Data for AI Labs	Active	San Francisco, CA, USA	1	Aaron Wenk	Reveal
Panels	S25	Audio Data for AI Labs	Active	San Francisco, CA, USA	2	Aaron Wenk, Jason Le	Reveal
Pangolin	S25	Identity-aware VPN and proxy for remote access to anything, anywhere.	Active	San Francisco, CA, USA	2	Milo Schwartz, Owen Schwartz	Reveal
Panoptive	S25	The continuous oversight engine for clinical trials	Active	San Francisco, CA, USA	2	Youssef Kallel	Reveal
Pleom	S25	Agentic Business Intelligence	Active	New York City, NY, USA	—	Royce Arockiasamy	Reveal
Pond	S25	Superhuman for text messages	Active	San Francisco, CA, USA	2	Aagam Dalal, Brian Williams	Reveal
ProcIndex	S25	AI-powered accounting automation for construction and manufacturing	Active	San Francisco, CA, USA	4	Neha Suresh, Akash Thakur	Reveal
Proliferate	S25	The autonomous engineering organization	Active	San Francisco, CA, USA	2	Pablo Hansen	Reveal
Qualify.bot	S25	AI phone agents for Commercial Lending	Active	San Francisco, CA, USA	2	Rohan Datta, Yash Goenka	Reveal
Quotain	S25	AI sales simulations using your real deals	Active	New York City, NY, USA	2	Alex Talamonti, Jason He	Reveal
Reacher	S25	We automate creator marketing for the world's largest brands	Active	San Francisco, CA, USA; Remote	10	Jerry Qian, Bora Mutluoglu	Reveal
Relling	S25	RL and Data Infrastructure for Robotics & World Models	Active	San Francisco, CA, USA	—	Jai Relan, Anya Singh	Reveal
Riverbank	S25	Infrastructure Cartography	Active	Boston, MA, USA	1	Carter Pry	Reveal
Riverbank	S25	AI-native Red Teaming and Offensive Security	Active	San Francisco, CA, USA	1	Carter Pry	Reveal
RowFlow	S25	Replacing forms with AI conversations	Active	New York City, NY, USA	2	Alec Olesky, Jack Bubes	Reveal
Sagekit	S25	AI workspace for research and writing	Active	San Francisco, CA, USA	2	Tom Greenwald, Anders Lie	Reveal
Serafis	S25	Narrative intelligence for investors	Active	San Francisco, CA, USA	4	Rohan Sharma	Reveal
SigmanticAI	S25	The Cursor for Chip Design - Delivering Silicon-Ready Chip Designs…	Active	Dublin, CA 94568, USA	2	Rohil Khare, Tamzid Razzaque	Reveal
SigmanticAI	S25	The Cursor for Chip Design - Delivering Silicon-Ready Chip Designs…	Active	San Francisco, CA, USA	2	Rohil Khare, Tamzid Razzaque	Reveal
Sira	S25	AI Native Rippling for Deskless Workers	Active	San Francisco, CA, USA	4	Nathan Belaye, Antonio Chan	Reveal
Skope	S25	Build a more profitable law firm with AI.	Active	San Francisco, CA, USA	2	Ben Smith, Connor Park	Reveal
Slashy	S25	Cursor for Email	Active	San Francisco, CA, USA	3	Pranjali Awasthi, Harsha Gaddipati, Dhruv Roongta	Reveal

Batch Distribution

XX2693 XX2574 WW26160 WW25132 WW24220 SS2637

Status Breakdown

Active964 Inactive26 Acquired10

Top Locations

San Francisco661 New York City71 London31 New York17 Paris13 Stockholm12

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.

Related Industries

Healthcare805 Fintech709 Consumer654 Engineering, Product and Design610 Industrials489 Infrastructure303 Productivity208 Real Estate and Construction184

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