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

Location

YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Founders	Reveal
Harper	W25	AI-native commercial insurance brokerage	Active	San Francisco, CA, USA	25	Dakotah Rice, Tushar Nair	Reveal
Harper	W25	AI-native commercial insurance brokerage	Active	San Francisco, CA, USA	25	Dakotah Rice, Tushar Nair	Reveal
hud	W25	Platform for building RL environments and evals	Active	San Francisco, CA, USA	15	Jay Ram, Lorenss Martinsons, Parth Patel	Reveal
hud	W25	Platform for building RL environments and evals	Active	San Francisco, CA, USA	5	Jay Ram, Lorenss Martinsons	Reveal
Infinite	W25	Global B2B Stablecoin Processor	Active	San Francisco, CA, USA	4	Nikhil Srinivasan, Raj Lad	Reveal
Inversion Semiconductor	W25	Manufacturing the most powerful chips, 15x faster	Active	San Francisco, CA, USA	5	Rohan Karthik, Daniel Vega	Reveal
Inversion Semiconductor	W25	Manufacturing the most powerful chips, 15x faster	Active	San Francisco, CA, USA	9	Rohan Karthik, Daniel Vega	Reveal
Leaping AI	W25	Voice AI agents to automate call centers (digital call center workers)	Active	San Francisco, CA, USA	8	Kevin Wu, Arkadiy Telegin	Reveal
Leaping AI	W25	AI voice and texting agents	Active	San Francisco, CA, USA	13	Kevin Wu, Arkadiy Telegin	Reveal
Lightbox	W25	Cursor for Content Creation	Active	San Francisco, CA, USA	2	Alexandru Turcanu, Dylan Player	Reveal
Lopus	W25	Headless Data Team	Active	San Francisco, CA, USA	2	Aamish Ahmad Beg, Danylo Borodchuk, Aamish Ahmad Beg	Reveal
Lucidic AI	W25	Reimagining how Machines Learn	Active	San Francisco, CA, USA	—	Abhinav Sinha, Andy Liang, Jeremy Tian	Reveal
Maive	W25	AI for Home Services	Active	San Francisco, CA, USA	2	David Tondreau, Will Cray	Reveal
Maritime Fusion	W25	Fusion reactors for ships	Active	San Francisco, CA, USA	6	Justin Cohen, Jason Kaufmann	Reveal
Mastra	W25	The Javascript framework for building AI agents, from the Gatsby devs	Active	San Francisco, CA, USA; Remote	30	Sam Bhagwat, Abhi Aiyer, Shane Thomas	Reveal
Mecha Health	W25	Foundation models to automate x-ray analysis for radiologists	Active	San Francisco, CA, USA	4	Ahmed Abdulaal, Hugo Fry, Ayodeji Ijishakin, Nina Montaña Brown	Reveal
Mecha Health	W25	Foundation models to automate x-ray analysis for radiologists	Active	San Francisco, CA, USA	4	Ahmed Abdulaal, Hugo Fry, Ayodeji Ijishakin, Nina Montaña Brown	Reveal
Mentra	W25	Building the open source smart glasses operating system.	Active	San Francisco, CA, USA	12	Cayden Pierce, Alexander Israelov, Conner Reinhardt	Reveal
Mesh	W25	Eliminating accrual spreadsheets for faster month-end	Active	San Francisco, CA, USA	3	Erin Kim, Nandini Ramakrishnan	Reveal
Mosaic	W25	Agentic video editing	Active	San Francisco, CA, USA	3	Adish Jain, Kyle Wade	Reveal
Nitrode	W25	Frontier AI research to advance game development	Active	San Francisco, CA, USA	10	Ben Kim, Sejoon Chang, Brian La	Reveal
Oki	W25	Personalized Updates on Company Progress	Active	San Francisco, CA, USA	2	Luofei Chen, Aayush Tyagi	Reveal
Olive	W25	Curated stories, every day	Active	San Francisco, CA, USA	2	Bardia Safari, Shrey Gupta	Reveal
Onlook	W25	Cursor for Designers	Active	San Francisco, CA, USA	4	Daniel Farrell	Reveal
Operand	W25	AI to run Business Strategy	Active	San Francisco, CA, USA	5	Ram Gorthi, Akhil Iyengar, Arjun Sahney	Reveal
Operand	W25	—	Active	San Francisco, CA, USA	8	Ram Gorthi, Akhil Iyengar, Arjun Sahney	Reveal
Optifye.ai	W25	AI performance monitoring for factory workers	Active	San Francisco, CA, USA	8	Vivaan Baid, Kushal Mohta	Reveal
Optifye.ai	W25	AI performance monitoring for factory workers	Active	San Francisco, CA, USA	3	Vivaan Baid, Kushal Mohta	Reveal
Osmosis	W25	Reinforcement Learning (RL) for AI Agents	Active	San Francisco, CA, USA	6	Kasey Zhang, Andy Lyu	Reveal
Outlit	W25	Retain and Grow Every Customer	Active	San Francisco, CA, USA	3	Josh Earle, Leo Paz	Reveal
Outship	W25	Hire amazing engineers by seeing how they use AI	Active	San Francisco, CA, USA	3	Saner Cakir, Kayla Lee	Reveal
Pave Robotics	W25	Robots that repair roads	Active	San Francisco, CA, USA	3	Josh Kelly, Mason Landon Smith	Reveal
PAX Markets	W25	More 𝛼, less latency: exchange and HFT on one chip.	Active	San Francisco, CA, USA	6	Pete Stevenson, Benjamin Kilimnik	Reveal
Pickle	W25	Where your life context becomes understanding.	Active	San Francisco, CA, USA	15	Daniel Park, Sanio Jung, Emmett Kim, Hojin Yu, Brian McMahon	Reveal
Pickle	W25	Where your life context becomes understanding.	Active	San Francisco, CA, USA	15	Daniel Park, Sanio Jung, Emmett Kim, Ho Jin Yu	Reveal
Praxim	W25	The agentic AI Word editor	Active	San Francisco, CA, USA	2	Richie Hsiung, Frank Li	Reveal
Praxim	W25	The agentic AI Word editor	Active	San Francisco, CA, USA	2	Richie Hsiung, Frank Li	Reveal
Proception Inc	W25	Making humanoids dexterous enough to thread a needle	Active	San Francisco, CA, USA	10	Jay Li, Jack Xu	Reveal
Promptless	W25	An AI teammate that automatically updates your customer-facing docs	Active	San Francisco, CA, USA	5	Prithvi Ramakrishnan, Frances Liu	Reveal
Quantstruct	W25	AI documentation engineer – test & autoimprove stale product docs	Active	San Francisco, CA, USA	2	Sarthak Srinivas, Newman Hu	Reveal
Rebolt	W25	AI-Powered Company OS	Active	San Francisco, CA, USA	3	Celia Manzano, Javier Sanchez	Reveal
Riviera	W25	AI Employees for Hotels	Active	San Francisco, CA, USA	2	Shaun Lane, Daniel Tyshler	Reveal
Riviera	W25	AI Employees for Hotels	Active	San Francisco, CA, USA	2	Shaun Lane, Daniel Tyshler	Reveal
Roark	W25	Test, monitor, and improve your voice agents	Active	San Francisco, CA, USA	3	James Zammit, Daniel Gauci	Reveal
Rocketable	W25	The AI Maximalist Software Holding Company	Active	San Francisco, CA, USA; Remote	2	Alan Wells	Reveal
SalesPatriot	W25	We help defense firms win more contracts with the Pentagon	Active	San Francisco, CA, USA	13	Nelson Ray, Ben Rhodes-Kropf, Maciej Szymczyk	Reveal
SalesPatriot	W25	AI powered operating system for distributors and OEMs	Active	San Francisco, CA, USA	15	Nelson Ray, Ben Rhodes-Kropf, Maciej Szymczyk, Benjamin Rhodes-Kropf	Reveal
Sennu AI	W25	We turn traditional companies into AI companies	Active	San Francisco, CA, USA	2	Sriman Gaddam, Sukhjit Singh	Reveal
Sennu AI	W25	AI Code Review for Salesforce Development	Active	San Francisco, CA, USA	2	Sriman Gaddam, Sukhjit Singh	Reveal
Solidroad	W25	AI agents for CX teams, starting with training and QA.	Active	San Francisco, CA, USA	6	Mark Hughes, Patrick Finlay	Reveal