San Francisco

YC Companies in San Francisco

1,500 Y Combinator startups based in San Francisco with verified founder contacts and company data.

1,500

Companies

San Francisco

Location

YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
Pax	S24	AI Broker for Tariff Refunds	Active	San Francisco, CA, USA	6	Penny Chen, Chris Le	Reveal
Pharos	S24	Helping hospitals identify and prevent avoidable harm using AI	Active	San Francisco, CA, USA	5	Felix Brann, Matthew Jones	Reveal
Pinnacle	S24	API & SDK for RCS (the next-generation of texting)	Active	San Francisco, CA, USA	2	Sean Roades, Ivan Zhang	Reveal
Pipeshift	S24	Modular Orchestration Platform for Open Source AI	Active	San Francisco, CA, USA	10	Arko C, Enrique Ferrao, Pranav Reddy	Reveal
Planbase	S24	AI workforce management for healthcare	Active	San Francisco, CA, USA	4	Jack Light, Joe Shearman	Reveal
Poka Labs	S24	The modern operating system for chemical manufacturing.	Active	San Francisco, CA, USA	3	Andrew Bass, Malay Shah	Reveal
ProhostAI	S24	AI Property Manager for Airbnb & Short-Term Rental Hosts	Active	San Francisco, CA, USA	5	Bill Ulammandakh, Andrew Lawson	Reveal
Propaya	S24	AI commercial lease abstractions and review	Active	San Francisco, CA, USA	2	Reader Wang, Jake Golas	Reveal
Rastro	S24	The fastest way for retailers to launch product catalogs.	Active	San Francisco, CA, USA	3	Baptiste Cumin, Augustin Baudoin, Papa Sougou Wele	Reveal
ReactWise	S24	AI Co-Pilot for Chemical Process Optimization	Active	San Francisco, CA, USA	2	Alexander Pomberger, Daniel Wigh	Reveal
Redouble AI	S24	Scale human-in-the-loop for AI workflows in regulated industries	Active	San Francisco, CA, USA	3	Martin Bittner, Haotian Li, Andrey Santrosyan	Reveal
Refactor	S24	Deploying secure and reliable AI agents across healthcare, retail,…	Active	San Francisco, CA, USA	3	Arnav Joshi, Daniel Zamoshchin	Reveal
Remade	S24	AI-native canvas for creative workflows.	Acquired	San Francisco, CA, USA	4	Alex Matthews, Christos Antonopoulos, Blendi Bylygbashi, Rehan Sheikh	Reveal
RentFlow	S24	The first 'Buy Now Pay Later' solution for Commercial Rent	Active	San Francisco, CA, USA	3	Joseph Thalinjan, Alix Maurin	Reveal
RetroFix	S24	Automate any workflow using plain english	Active	San Francisco, CA, USA	2	Isaac Toscano, Daniel Portela	Reveal
RiskAngle	S24	AI medical summaries in minutes	Inactive	San Francisco, CA, USA	2	Bill Chen, William Hu	Reveal
RowBoat Labs	S24	Open-source AI-assisted agent builder	Active	San Francisco, CA, USA	3	Arjun Maheswaran, Ramnique Singh	Reveal
Sage	S24	Automating home care agency operations with AI	Active	San Francisco, CA, USA	4	Jon Levinson, Ian Gillis	Reveal
Saldor	S24	Hands-free email	Active	San Francisco, CA, USA	2	Jacob Bland, Jack Cameron	Reveal
Saphira AI	S24	Vanta for Hardware	Active	San Francisco, CA, USA	6	Akshay Chalana, Oscar Avatare	Reveal
Scape	S24	AI-native CRM that captures all your conversations	Active	San Francisco, CA, USA	2	Melvin Hagberg	Reveal
Seals AI	S24	AI Employees for Wholesalers & Distributors	Active	San Francisco, CA, USA	4	Luis Mario Garcia, Heber Garza, Javier Gonzalez, Fernando Huerta	Reveal
Sensei	S24	Robotic Training Data at Scale	Active	San Francisco, CA, USA	2	Anubhav Guha, John Piotti	Reveal
Sepal AI	S24	Data Development for Advanced AI	Acquired	San Francisco, CA, USA	15	Robi Lin, Kat Hu	Reveal
SimCare	S24	AI avatars to scale healthcare training.	Active	San Francisco, CA, USA	7	Vrishank Saini, Tiko Bdoyan	Reveal
Simple AI	S24	AI voice that sells	Active	San Francisco, CA, USA	11	Catheryn Li, Zach Kamran	Reveal
Simplex	S24	Production-grade web agents.	Active	San Francisco, CA, USA	2	Shreya Karpoor, Marco Nocito	Reveal
Soff	S24	AI Agents for Distributors	Active	San Francisco, CA, USA	6	Berni Hausleitner	Reveal
Sorcerer	S24	Building a nervous system for the atmosphere	Active	San Francisco, CA, USA	4	Austin Tindle, Maxmillion McLaughlin, Alessandro Vecchi	Reveal
Spur	S24	Spur is your AI QA Engineer. Test your websites with natural language.	Active	San Francisco, CA, USA	8	Sneha Sivakumar, Anushka Nijhawan	Reveal
Stardrift	S24	AI travel search for frequent flyers	Active	San Francisco, CA, USA	2	Leila Clark	Reveal
Sterling Labs, Inc	S24	Currently in stealth - previously FocusBuddy	Active	San Francisco, CA, USA	2	Adnan Sherif, Yash Ramchandani	Reveal
Superunit	S24	Faster, more profitable background checks with AI	Active	San Francisco, CA, USA	2	Peter Marler, Zach Yellin-Flaherty	Reveal
Syntra	S24	AI chart review for speciality medical clinics.	Active	San Francisco, CA, USA	9	Ayush Jain, Aniketh Kolla	Reveal
TaxGPT	S24	AI tax assistant for professionals and businesses	Active	San Francisco, CA, USA	28	Kashif Ali, Isabella Maceda-Ali	Reveal
TaxGPT	S24	AI tax assistant for professionals and businesses	Active	San Francisco, CA, USA	28	Kashif Ali, Isabella Maceda-Ali	Reveal
The Synthesis Company	S24	100x faster scientific evidence synthesis	Active	San Francisco, CA, USA	3	Cyrus Nouroozi, Amir Mehr	Reveal
Thunder Compute	S24	The world's cheapest GPU cloud	Active	San Francisco, CA, USA	4	Carl Peterson, Brian Model	Reveal
Thyme	S24	The OS for financial advisors	Acquired	San Francisco, CA, USA	2	Daniel Lantz, Fernando San Martin	Reveal
Typa	S24	The content engine that wins attention and drives growth.	Active	San Francisco, CA, USA	2	Andrew Chung, Junyoung Park	Reveal
Unbound	S24	Use AI tools without fear of data leakage	Active	San Francisco, CA, USA	7	Rajaram Srinivasan, Vignesh Subbiah	Reveal
Undermind	S24	An AI agent for scientific research	Active	San Francisco, CA, USA	—	Joshua Ramette, Tom Hartke	Reveal
Unsloth AI	S24	Open-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.	Active	San Francisco, CA, USA	8	Daniel Han, Michael Han	Reveal
Usul	S24	AI Platform for Winning Defense & Government Contracts	Active	San Francisco, CA, USA	11	Jarren Reid, Oliver Gomez, Joonghyun Lee	Reveal
Vendra	S24	Custom Parts, Manufactured in America 🇺🇸	Active	San Francisco, CA, USA	5	Shan Mohta, Anish Bhardwaj	Reveal
Vera Health	S24	AI-powered clinical decision support for healthcare providers	Active	San Francisco, CA, USA	6	Taieb Bennani, Maxime Allouch	Reveal
Vibe	S24	Making everyone a software engineer	Active	San Francisco, CA, USA	2	Ray Morgan, Katia Bazzi	Reveal
Void	S24	The open source Cursor alternative	Active	San Francisco, CA, USA	2	Andrew Pareles, Mathew Pareles	Reveal
Wordware	S24	AI agents you can rely on	Active	San Francisco, CA, USA	15	Filip Kozera, Robert Chandler	Reveal
Zettascale	S24	Energy efficient chips for AI	Active	San Francisco, CA, USA	4	Elias Almqvist, Prithvi Raj	Reveal