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
Million	W24	Tools for agent verification	Active	San Francisco, CA, USA	5	Aiden Bai, Nisarg Patel	Reveal
Momentic	W24	The agentic quality platform for web and mobile	Active	San Francisco, CA, USA	15	Wei-Wei Wu, Jeff An	Reveal
Navier AI	W24	Agent-Driven Engineering	Active	San Francisco, CA, USA	7	Cameron Flannery, Evan Kay	Reveal
Newton	W24	AI-powered phone platform for dentists	Active	San Francisco, CA, USA	4	Rohit Chaparala, Sam Detjen	Reveal
Nuanced	W24	Nuanced makes AI coding agents and tools smarter with static analysis.	Active	San Francisco, CA, USA	2	Ayman Nadeem	Reveal
Nuanced	W24	the AI coding app for thinking.	Active	San Francisco, CA, USA; Remote	2	Ayman Nadeem	Reveal
Octolane AI	W24	Revenue Superintelligence	Active	San Francisco, CA, USA	5	One Chowdhury, Md Abdul Halim Rafi, Md Abdul Halim Rafi	Reveal
Octolane AI	W24	Self-Driving AI CRM	Active	San Francisco, CA, USA	5	One Chowdhury, Md Abdul Halim Rafi	Reveal
Ocular AI	W24	Applied AI Data Research Lab Encoding Human Expertise into Machines…	Active	San Francisco, CA, USA	8	Michael Moyo, Louis Murerwa	Reveal
OmniAI	W24	AI Agents for Commercial Lending	Active	San Francisco, CA, USA	5	Tyler Maran, Anna Pojawis	Reveal
Onyx	W24	Open Source AI Chat	Active	San Francisco, CA, USA	20	Yuhong Sun, Chris Weaver	Reveal
Onyx	W24	Open Source AI Chat	Active	San Francisco, CA, USA	20	Yuhong Sun, Chris Weaver	Reveal
Open	W24	Enterprise AI customer support	Active	San Francisco, CA, USA	21	Mohammad Gharbat, Mohammad Algharabat	Reveal
OpenFoundry	W24	The fastest developer experience for building on open source AI.	Active	San Francisco, CA, USA	2	Tyler Lehman	Reveal
OpenFoundry	W24	The fastest developer experience for building on open source AI.	Active	San Francisco, CA, USA	2	Tyler Lehman, Arthur Chi	Reveal
Paradigm	W24	A reimagined workspace with AI at its core	Active	San Francisco, CA, USA	8	Anna Monaco	Reveal
ParcelBio	W24	Elevated mRNA for transformative medicines.	Active	San Francisco, CA, USA	6	David Weinberg, Chris Carlson, Christopher Carlson	Reveal
PartnerHQ	W24	A marketplace for B2B businesses to buy warm intros.	Active	San Francisco, CA, USA	4	Kat Wang, Stan Liu	Reveal
Patchwork	W24	Your team’s AI powered communication tool	Inactive	San Francisco, CA, USA	2	Dhruhin Kurli, Nikki Shah	Reveal
Penciled	W24	AI front office assistant for physical therapy	Active	San Francisco, CA, USA	2	Shawn Shivdat	Reveal
phospho	W24	Give brains to robots	Active	San Francisco, CA, USA	2	Pierre-Louis Biojout	Reveal
Pivot Robotics	W24	AI for Robot Arms in Factories	Active	San Francisco, CA, USA	7	Siddharth Girdhar, Vignesh Rajmohan	Reveal
Polar	W24	The smarter way to manage USD earnings globally	Active	San Francisco, CA, USA	2	Grant Ackerman, Andrew Wang	Reveal
Polished	W24	Generate ads. Iterate till perfect.	Active	San Francisco, CA, USA	—	JJ Maxwell, Mark Wai	Reveal
Powder	W24	AI Agents for precise document analysis	Active	San Francisco, CA, USA	6	Kanishk Parashar, Soo Yung Cho, David Goerz, Dominic Tully	Reveal
PromptArmor	W24	LLM Security and Compliance	Active	San Francisco, CA, USA	—	Shankar Krishnan, Vikram Jayanthi	Reveal
RadMate AI	W24	Copilot for radiologists	Inactive	San Francisco, CA, USA	2	Mohamed Khalifa, Adam Skrocki	Reveal
RadMate AI	W24	Copilot for radiologists	Inactive	San Francisco, CA, USA	2	Mohamed Khalifa, Adam Skrocki	Reveal
Raindrop	W24	Sentry for AI Agents	Active	San Francisco, CA, USA	9	Zubin Koticha, Alexis Gauba, Ben Hylak	Reveal
Raindrop	W24	Sentry for AI Agents	Active	San Francisco, CA, USA	6	Zubin Koticha, Alexis Gauba, Ben Hylak	Reveal
Reducto	W24	The complete agentic document platform	Active	San Francisco, CA, USA	30	Adit Abraham, Raunak Chowdhuri	Reveal
Reform	W24	Workflow automation. Built for logistics.	Active	San Francisco, CA, USA	13	Omar Abuhashish, Pradhit Gosula	Reveal
Reform	W24	Workflow automation. Built for logistics.	Active	San Francisco, CA, USA	11	Omar Abuhashish, Pradhit Gosula	Reveal
Relari	W24	Building dexterous robots that learn from human biomechanics	Active	San Francisco, CA, USA	2	Yi Zhang, Pasquale Antonante	Reveal
Relari	W24	AI Agent Builder for Software 3.0	Active	San Francisco, CA, USA	2	Yi Zhang, Pasquale Antonante	Reveal
Reprompt	W24	AI Agents for Location	Active	San Francisco, CA, USA	3	Lukas Martinelli, Rob Balian	Reveal
Resonance	W24	Self-improving content bank for marketing	Acquired	San Francisco, CA, USA	2	Jonathan Ou	Reveal
Resonance	W24	Self-improving content bank for marketing	Active	San Francisco, CA, USA	2	Jonathan Ou	Reveal
Respan	W24	Self-driving observability, evals, and gateway for AI agents	Active	San Francisco, CA, USA	23	Andy Li, Raymond Huang	Reveal
RetailReady	W24	An AI-powered supply chain compliance engine	Active	San Francisco, CA, USA	12	Elle Smyth, Sarah Hamer	Reveal
Retell AI	W24	Supercharge Your Contact Center Operations with AI Phone Agents	Active	San Francisco, CA, USA	50	Bing Wu, Todd Li, Evie Wang, Weijia Yu, Zexia Zhang	Reveal
Risotto	W24	Risotto auto-solves IT support requests using AI	Active	San Francisco, CA, USA; Remote	3	Aron Solberg, Alex Confer, Chris Paul	Reveal
ROE	W24	AI for risk and compliance	Active	San Francisco, CA, USA	9	Richard Meng	Reveal
Same	W24	Build products without coding	Active	San Francisco, CA, USA	5	Aiden Bai, Nisarg Patel	Reveal
Sample	W24	Flexible systems for clinical reasoning.	Active	San Francisco, CA, USA	5	Ankit Ranjan, Aash Jain	Reveal
Scout	W24	AI insights for consumer products	Active	San Francisco, CA, USA	3	Sasha Zhang	Reveal
Scritch	W24	AI operating system for veterinary care	Active	San Francisco, CA, USA	—	Claire Lee, Rachel Lee	Reveal
Scritch	W24	AI operating system for veterinary care	Active	San Francisco, CA, USA	5	Claire Lee, Rachel Lee	Reveal
Selera Medical	W24	One-time, device-based treatment for heart failure	Inactive	San Francisco, CA, USA	2	Stacie Arechavala, Kevin Bui	Reveal
Shiboleth	W24	Shiboleth automates lending compliance for financial institutions…	Active	San Francisco, CA, USA	5	Esty Scheiner, Bivu Dhungana	Reveal