Industry

YC Infrastructure Companies

303 Y Combinator infrastructure startups with verified founder contacts, batch info, and company data.

303

Companies

240

Active

Acquired

Public

YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
AgentPhone	X26	Phone Numbers for AI Agents	Active	San Francisco, CA, USA	2	Manav Modi, Meet Modi	Reveal
Expanse	X26	Unlock wasted GPU capacity.	Active	San Francisco, CA, USA	4	Ismaeel Bashir, Nikodem Bieniek, Yafet Melake, Eren Mendi	Reveal
Hub	X26	Real-world training data for frontier AI labs and robotics.	Active	San Francisco, CA, USA	10	Tim Sprecher, Armin Kiani	Reveal
Interfaze	X26	AI model built for high accuracy deterministic tasks	Active	San Francisco, CA, USA	5	Yoeven D Khemlani, Harsha Vardhan Khurdula, Harsha Vardhan Khurdula	Reveal
Inth	X26	Monitor and fix product privacy issues before they block growth	Active	London, England, United Kingdom	3	Christopher Burns	Reveal
KugelAudio	X26	Kugel is an on-prem Voice AI model supporting 30+ languages	Active	Berlin, Berlin, Germany	4	Viktor Presber, Kajo Kratzenstein	Reveal
Memory Store	X26	Company Brain.	Active	San Francisco, CA, USA	4	Diwank Tomer, Ishita Jindal, Diwank Singh Tomer	Reveal
Minicor	X26	Scalable windows desktop automations	Active	San Francisco, CA, USA	7	Faizaan Chishtie, Saheed Akinbile	Reveal
Miso Labs	X26	Emotive foundation voice models	Active	San Francisco, CA, USA	2	Aoden Teo, Cassidy Dalva	Reveal
ProjectX	X26	Agent native workspace for heavy parallel workflows on the web	Active	San Francisco, CA, USA	8	Rounak Adhikary, Bishal Karmakar, Sourya Majumder	Reveal
Sazabi	X26	The AI-native observability platform for fast-moving engineering teams	Active	San Francisco, CA, USA	10	Sherwood Callaway	Reveal
smol machines	X26	Ship software faster with portable, self contained virtual machines.	Active	San Francisco, CA, USA	1	BinBin He, BinBin H.	Reveal
Wato	X26	The control point for AI agents at work.	Active	San Francisco, CA, USA	2	Arihan Varanasi, Rahul Rejeev	Reveal
Zibra Labs	X26	Distributed runtime for AI workloads at scale	Active	San Francisco, CA, USA	2	Ibrahim Rabbani, Zac Policzer	Reveal
Autumn AI	W26	Stalk your prospects at scale.	Active	San Francisco, CA, USA	2	Shiv Kampani, Vishnu Sampathkumar	Reveal
Captain	W26	Self-tuning file search for AI agents	Active	San Francisco, CA, USA	2	Lewis Polansky, Edgar Babajanyan	Reveal
Cascade	W26	Distilling Proprietary Intelligence	Active	San Francisco, CA, USA	2	Adam AlSayyad, Haluk Cem Demirhan	Reveal
Chamber	W26	Autopiloting your AI infrastructure	Active	San Francisco, CA, USA	4	Charles Ding, Andreas Bloomquist, Jason Ong, Shaocheng Wang	Reveal
Chamber	W26	The AIOps Agent for ML Teams	Active	Seattle, WA, USA	4	Charles Ding, Andreas Bloomquist, Jason Ong, Shaocheng Wang	Reveal
Coevolved	W26	Agents for Mortgage Origination	Active	—	2	Alex Li, Athan Zhang	Reveal
Compresr	W26	LLM context compression for better accuracy	Active	San Francisco, CA, USA	4	Ivan Zakazov, Berke Argin, Kamel Charaf, Oussama Gabouj	Reveal
Cumulus Labs	W26	The Fastest Multimodal Inference OS	Active	San Francisco, CA, USA	2	Veer Shah, Suryaa Rajinikanth	Reveal
Didit	W26	Infrastructure for identity and fraud.	Active	San Francisco, CA, USA	16	Alberto Rosas, Alejandro Rosas, Alberto Rosás García	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
IncidentFox	W26	AI SRE agent that triages, coordinates, and fixes production incidents	Active	San Francisco, CA, USA	2	Jimmy Wei, Long Yi	Reveal
Klaus AI	W26	Fast and Safe OpenClaw on the cloud	Active	San Francisco, CA, USA	2	Robbie Thompson, Bailey Wickham	Reveal
Luel	W26	Turning everyday words and actions into usable training data.	Active	San Francisco, CA, USA	12	William Namgyal, Inigo Lenderking	Reveal
Mantis	W26	Digital Twins of humans	Active	New York City, NY, USA	3	Georgia Witchel	Reveal
Maven	W26	Payments Infrastructure for Voice Agents	Active	San Francisco, CA, USA	2	Brandon Boehme, Wasi Ahmed	Reveal
Orthogonal	W26	Agentic Payments for APIs	Active	San Francisco, CA, USA	2	Christian Pickett, Bera Sogut	Reveal
Ossus	W26	Intelligence for cultural institutions	Active	San Francisco, CA, USA	3	Jonathan Görtz, Carl-Hugo Jacobsson, Kaan Sirin	Reveal
Oximy	W26	Take command of the AI your company already runs on.	Active	San Francisco, CA, USA	8	Naman Ambavi	Reveal
Piris Labs	W26	The Networking Layer of AI	Active	San Francisco, CA, USA	8	Ali Khalatpour, Keyvan Moghadam	Reveal
RunAnywhere	W26	The default way of running On-Device AI at Scale	Active	—	2	Shubham Malhotra, Sanchit Monga	Reveal
RunAnywhere	W26	The default way of running on-device AI at Scale	Active	San Francisco, CA, USA	5	Sanchit Monga, Shubham Malhotra	Reveal
Salus	W26	Guardrails to validate your agent's actions before they execute	Active	San Francisco, CA, USA	2	Vedant Singh, Kevin Pan	Reveal
Salus	W26	Guardrails to validate your agent's actions before they execute	Active	San Francisco, CA, USA	2	Kevin Pan, Vedant Singh	Reveal
Shofo	W26	The World's Largest Video Library	Active	San Francisco, CA, USA	4	Braiden Dishman, Andre Braga, Alexzendor Misra	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
The Token Company	W26	Compression middleware that improves LLM outputs	Active	San Francisco, CA, USA	2	Otso Veisterä	Reveal
Wayco	W26	AI operator for medlegal cases	Active	New York City, NY, USA	5	Iqbol Temirkhojaev	Reveal
AfterQuery	W25	Applied research lab curating data solutions for foundation model…	Active	San Francisco, CA, USA	30	Carlos Georgescu, Spencer Mateega	Reveal
assistant-ui	W25	Open Source React.js Library for AI Chat	Active	San Francisco, CA, USA	3	Simon Farshid	Reveal
Archal	S26	API sandboxes, built for AI agents	Active	San Francisco, CA, USA	2	Noah Song, Aidan Tiruvan	Reveal
Caution	S26	Hosting platform for software you don't want to have hacked	Active	George Town, George Town, Cayman Islands	5	Anton Livaja, Ksenia Lesko, Lance Vick	Reveal
Induction Labs	S26	Building intellectually curious AI	Active	San Francisco, CA, USA	2	Jonathan Li, David Li, Jeffrey Li	Reveal
Inkbox	S26	The identity and communication layer for AI agents	Active	San Francisco, CA, USA	3	Ray Liao, Dima Vremenko, Alex Wilcox	Reveal
machine0	S26	Cloud computers for AI agents	Active	Paris, Île-de-France, France	1	Barnaby Malet	Reveal
OneTriangle	S26	The cheapest, fastest lightweight inference.	Active	San Francisco, CA, USA	4	Hannah Chung, Medha Venkatapathy	Reveal

Batch Distribution

XX2614 XX256 WW2628 WW259 WW2414 WW2316

Status Breakdown

Active240 Acquired37 Inactive26

Top Locations

San Francisco176 New York City20 London6 New York5 Seattle4 Paris4

About YC Infrastructure Companies

Y Combinator has funded 303 infrastructure 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 infrastructure innovation globally.

240 of these companies are currently active. 37 have been acquired. VCBacked tracks verified founder contact information, team sizes, and company status for every YC infrastructure startup.

Related Industries

B2B3278 Healthcare805 Fintech709 Consumer654 Engineering, Product and Design610 Industrials489 Productivity208 Real Estate and Construction184

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