San Francisco

YC Companies in San Francisco

2,672 Y Combinator startups based in San Francisco with verified founder contacts and company data.

2,672

Companies

San Francisco

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YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
Adentris	X25	Real-time AI Compliance & Revenue Integrity for Medical Providers	Active	San Francisco, CA, USA	5	Dmitry Karpov, Alex Odin, Sergey Yudovskiy	Reveal
Aegis	X25	AI Agents to win denied health insurance claims.	Active	San Francisco, CA, USA	3	Krishang Todi, Aarav Bajaj, Dhanya Shah	Reveal
Airweave	X25	The open-source context retrieval layer for agents	Active	San Francisco, CA, USA	7	Lennert Jansen, Rauf Akdemir	Reveal
Aravolta	X25	Software to monitor, control, and optimize data centers.	Active	San Francisco, CA, USA	4	Margarita Groisman, Jack Sutton	Reveal
Attune	X25	Faster builds, zero effort.	Active	San Francisco, CA, USA	3	Xin Ding	Reveal
Atum Works	X25	Gigascale Nanomanufacturing	Active	San Francisco, CA, USA	3	Lucas Pabarcius, Matteo Kimura, Malcolm Tisdale	Reveal
Aviro	X25	Environments for Long Horizon Tool Use	Active	San Francisco, CA, USA	2	Aarush Kukreja, Ayush Karupakula	Reveal
Beluga	X25	Creator marketing that scales like paid ads	Active	San Francisco, CA, USA	3	Fernando Young, Jack Swisher	Reveal
Besimple AI	X25	Voice data for AI	Active	San Francisco, CA, USA	6	Yi Zhong, Bill Wang	Reveal
Better Auth	X25	The authentication framework for TypeScript	Active	San Francisco, CA, USA	4	Bereket Engida	Reveal
BitBoard	X25	Let your agent build dashboards and reporting.	Active	San Francisco, CA, USA	2	Connor Jones, Ambar Choudhury	Reveal
Blaxel	X25	The perpetual sandbox platform	Active	San Francisco, CA, USA	8	Paul Sinaï, Thomas Crochet, Charles Drappier, Mathis Joffre, Nicolas Lecomte, Christophe Ploujoux	Reveal
Bluejay	X25	Test, monitor, and improve your voice and chat AI agents	Active	San Francisco, CA, USA	10	Rohan Vasishth, Faraz Siddiqi	Reveal
Bond	X25	Your AI Chief of Staff	Active	San Francisco, CA, USA	3	Chloe Samaha	Reveal
Cactus	X25	All-In-One AI Growth Partner. Built for Trades.	Active	San Francisco, CA, USA	2	Ajith Govind, Avinash Joshi	Reveal
Capacitive	X25	The data gateway for agents.	Active	San Francisco, CA, USA	2	Kevin Treehan, Rohan Radhakeesoon	Reveal
Cartpole	X25	Building reinforcement learning environments	Active	San Francisco, CA, USA	2	Mateo Perez	Reveal
Cascade Space	X25	Commercial alternative to the Deep Space Network	Active	San Francisco, CA, USA	7	Jacob Portukalian, Arlen Abraham	Reveal
Chestnut	X25	The first AI mortgage lender	Active	San Francisco, CA, USA	2	Spencer Brown	Reveal
Clidey	X25	Turn scattered data into one platform for decision-making	Active	San Francisco, CA, USA; Remote	5	Hemang Kandwal, Anguel Hristozov	Reveal
Code Four	X25	Modernizing the police workflow.	Active	San Francisco, CA, USA	3	George Cheng, Dylan Nguyen	Reveal
Cotool	X25	AI Agents for Security Operations Teams	Active	San Francisco, CA, USA	4	Logan Carmody, Eddie Conk, Max Pollard	Reveal
Remedy	F25	AI Agents for Pharmacies	Active	San Francisco, CA, USA	3	Nikhil Devaraj, Sai Mandhan, Vishnu Sreenivasan	Reveal
Rivet	F25	Visual editor to design in production code	Active	San Francisco, CA, USA	—	Sam Gorman	Reveal
Rovr	F25	AI FDE Engine that runs your engineering workflows	Inactive	San Francisco, CA, USA	3	Arnav Jain, Yash Jain, Nithik Yekollu	Reveal
s2.dev	F25	API for unlimited, durable, real-time streams	Active	San Francisco, CA, USA	5	Shikhar Bhushan, Stephen Balogh, Dwarak Govind Parthiban, Dwarak Parthiban	Reveal
Sciloop	F25	Expert STEM reasoning data for frontier AI labs.	Active	San Francisco, CA, USA	6	Bilal Asmatullah, Osman Siddique	Reveal
Scoop	F25	Automating regulatory submissions for life sciences	Active	San Francisco, CA, USA	2	Vincent Park, Jay Kwon	Reveal
Selfin	F25	Building the first AI Bank	Active	San Francisco, CA, USA	2	Paula Gutierrez, Joel Tomas Pimentel, Joel Tomas Pimentel	Reveal
SellRaze	F25	The fastest way to sell online.	Active	San Francisco, CA, USA	6	Jeff Mao, Tyler Ma	Reveal
Semble AI	F25	The all-in-one software for integrators.	Active	San Francisco, CA, USA	14	Jonathan Tyshler, Ethan Boyers	Reveal
Semble AI	F25	Autonomous building-system design for construction companies.	Active	San Francisco, CA, USA	2	Jonathan Tyshler, Ethan Boyers	Reveal
Semiotic	F25	Studio-Grade Design at Scale	Active	San Francisco, CA, USA	3	Michael Roberson, Bryan Grisales, Brandon Yao	Reveal
Sorce	F25	Tinder for jobs	Active	San Francisco, CA, USA	6	Oluwapelumi Dada, Daniel Ajayi, David Alade	Reveal
Soren	F25	The AI workforce for business operations.	Active	San Francisco, CA, USA	—	Kevin Xie	Reveal
Sourcebot	F25	Helping humans and AI agents understand massive codebases	Active	San Francisco, CA, USA	2	Michael Sukkarieh, Brendan Kellam	Reveal
Sylvian	F25	Specialized AI Agents.	Inactive	San Francisco, CA, USA	2	William Huang, Niall Kehoe	Reveal
Terrain	F25	AI native GTM platform for the physical economy	Active	San Francisco, CA, USA	2	Tejas Agarwal, Pankaj Mishra	Reveal
The Context Company	F25	Monitor AI agents and understand user behavior	Active	San Francisco, CA, USA	2	Arman Kumaraswamy, Rohil Agarwal	Reveal
The Context Company	F25	Monitor AI agents and understand user behavior	Active	San Francisco, CA, USA	2	Arman Kumaraswamy, Rohil Agarwal	Reveal
The Hog	F25	Real-time web intelligence API for AI agents and GTM teams	Active	San Francisco, CA, USA	2	Hudson Liao, Paulo Nascimento	Reveal
Thesis	F25	Autonomous AI research	Active	San Francisco, CA, USA	3	Sergio Charles, Luigi Charles	Reveal
Trelium	F25	The Agent to Build Your Agents	Active	San Francisco, CA, USA; Remote	6	Abhimanyu Yadav, Ritanshu Dokania	Reveal
Unsiloed AI	F25	API for parsing multimodal unstructured data	Active	San Francisco, CA, USA	2	Aman Mishra, Adnan Abbas	Reveal
Unsiloed AI	F25	API for parsing multimodal unstructured data	Active	San Francisco, CA, USA	2	Aman Mishra, Adnan Abbas	Reveal
Uplane	F25	Replace marketing agencies with AI	Active	San Francisco, CA, USA	22	Julius Körfgen, Marvin Abdel-Massih, Lukas Vollmer, Julius Korfgen	Reveal
Velvet	F25	Data for world models	Active	San Francisco, CA, USA	2	Lucas Mantovani, Lucas Tucker	Reveal
Veria Labs	F25	Continuous AI pentesting that finds and fixes vulnerabilities	Active	San Francisco, CA, USA	3	Cayden Liao, Jayden Sarveshkumar, Stephen Xu	Reveal
Zarna	F25	AI Associates for Middle-Market Private Equity	Active	San Francisco, CA, USA	4	Rishabh Dhariwal, Vivan Agrawal, Hrishi Joshi, Rakesh Mehta	Reveal
Zarna	F25	AI Associates for Private Capital	Active	San Francisco, CA, USA	4	Rishabh Dhariwal, Vivan Agrawal, Hrishi Joshi, Rakesh Mehta	Reveal