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

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YC Company Directory

50 companies

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Company	Batch	Description	Status	Location	Team	Site	Founders	Reveal
datafruit	S25	AI DevOps Engineer	Active	San Francisco, CA, USA	4		Venkat Arun, Abhiram Chennupati, Tom Jeong, Nick Papciak	Reveal
Dedalus Labs	S25	Connect any LLM to any MCP tools and create complex agents in minutes.	Active	San Francisco, CA, USA	9		Catherine Di, Windsor Nguyen	Reveal
DeepAware AI	S25	Help AI data centers unlock more compute and become more efficient	Active	San Francisco, CA, USA	2		Jerry Huang, Stela Tong	Reveal
Design Arena	S25	World's largest crowdsourced benchmark for AI-generated design	Active	San Francisco, CA, USA	3		Grace Li, Kamryn Ohly	Reveal
Doe	S25	The boring stuff, handled. Everything else, supercharged.	Active	San Francisco, CA, USA	4		Adrian Barbir, Richard Ou	Reveal
EffiGov	S25	The AI OS for Cities	Active	San Francisco, CA, USA	3		Aubteen Pour-Biazar, Aden Clemente	Reveal
Embedder	S25	Cursor for Firmware	Active	San Francisco, CA, USA	4		Ethan Gibbs, Bob Wei	Reveal
F4	S25	Automating compliance checks for engineering drawings	Active	San Francisco, CA, USA	5		Paul Shin, Aidan Cantu	Reveal
Fluidize	S25	Helping scientists and engineers run experiments with AI.	Active	San Francisco, CA, USA	3		Henry Bae, Alex Fleury, Jamin Liu	Reveal
Flywheel AI	S25	Waymo for excavators	Active	San Francisco, CA, USA	2		Jash Mota, Mahimana Bhatt	Reveal
Freya	S25	Voice AI for Enterprises	Active	San Francisco, CA, USA	5		Tunga Bayrak, Tomas Nepala	Reveal
Frizzle	S25	AI Grading for Teachers	Active	San Francisco, CA, USA	2		Abhay Gupta, Shyam Sai	Reveal
Golpo	S25	Most Powerful AI Video Gen Model for Explainer Videos From Documents	Active	San Francisco, CA, USA	4		Shraman Kar, Shreyas Kar	Reveal
GoRiff	S25	Cursor for music production	Active	San Francisco, CA, USA	2		Adith Reddi, Kenny Zhang	Reveal
Halluminate	S25	Data and RL environments to automate knowledge work	Active	San Francisco, CA, USA	2		Jerry Wu, Wyatt Marshall	Reveal
Humoniq	S25	AI-Native BPO for travel & transport	Active	San Francisco, CA, USA	6		Todd Sullivan, Will Weber	Reveal
Idler	S25	Reinforcement learning environments.	Active	San Francisco, CA, USA	14		Ivan Chub, Nalu Concepcion, Tony Goss	Reveal
Janet AI	S25	The AI-Native Jira	Active	San Francisco, CA, USA	2		Adhit Sankaran, William Barthell	Reveal
Kernel	S25	Crazy fast, open source infra for AI agents to use the Internet	Active	San Francisco, CA, USA	6		Catherine Jue, Rafael Garcia	Reveal
KE Kestroll	S25	—	Active	San Francisco, CA, USA	2	—	Benjamin Skinner, Tom Yang	Reveal
Knowlify	S25	Convert textual content into explainer videos in < 15s	Active	San Francisco, CA, USA	4		Ritam Rana, Jonathan Maynard, Arjun Talati, Ritvik Varada	Reveal
Lanesurf	S25	Voice AI for booking freight	Active	San Francisco, CA, USA	4		Pratham Bansal, Sarthak Singh Chauhan	Reveal
Lark	S25	The E2E testing layer for AI-driven development	Active	San Francisco, CA, USA	2		Vijit Dhingra, Jack Brown	Reveal
Lilac	S25	Spot GPUs that use idle GPUs from enterprises	Active	San Francisco, CA, USA	2		Ryan Ewing, Lucas Ewing	Reveal
Liva AI	S25	Audio & Video Data	Active	San Francisco, CA, USA	2		Ashley Mo, Aoi Otani	Reveal
Lotas	S25	AI for Data Science and 3D	Active	San Francisco, CA, USA	2		Jorge Guerra, William Nickols	Reveal
Louiza Labs	S25	Hebbia for Pharmaceutical Evidence	Active	San Francisco, CA, USA	2		Larissa Tyagi	Reveal
MangoDesk	S25	RL environments for software engineering	Active	San Francisco, CA, USA	2		Ankith Subramanya, Ananth Subramanya	Reveal
Metis	S25	Infrastructure to build reliable agents	Active	San Francisco, CA, USA	13		Aryan Shah, Aayush Sheth, Marcus Yearwood	Reveal
Modelence	S25	The full-stack platform for agentic development	Active	San Francisco, CA, USA	3		Aram Shatakhtsyan, Eduard Piliposyan	Reveal
Monarcha	S25	An expert for your spatial data	Active	San Francisco, CA, USA	2		James Spokes, Everett Lee	Reveal
Nexa Labs	S25	Implantable microchips and AI for cattle monitoring	Active	San Francisco, CA, USA	5		Zarif Azher, Kenneth Chan, Samuel Xie, Alvin Zhang	Reveal
Normal	S25	Deploying and integrating useful robots	Active	San Francisco, CA, USA	2		Anson Yu, Hudhayfa Nazoordeen	Reveal
Notte	S25	Reliable Web Agents for Enterprise	Active	San Francisco, CA, USA	5		Andrea Pinto, Lucas Giordano	Reveal
Novaflow	S25	The AI data analyst for biology labs	Active	San Francisco, CA, USA	2		Aman Agarwal, Amulya Balakrishnan	Reveal
Okibi	S25	Build AI coworkers using natural language, it's Lovable for agents	Active	San Francisco, CA, USA	2		Mahyad Ghassemi, Saurav Mitra	Reveal
Omnara	S25	Mobile & Web Interface for Claude Code & Codex	Active	San Francisco, CA, USA	3		Ishaan Sehgal, Kartik Sarangmath	Reveal
Opennote	S25	The notebook that thinks with you.	Active	San Francisco, CA, USA	3		Rishi Srihari, Abhi Arya, Vedant Vyas	Reveal
Outrove	S25	Ultra-realistic AI Recruiter	Active	San Francisco, CA, USA	2		Ahmed ElShireef, Saif Elhager	Reveal
Pally	S25	Intelligent Unified Inbox + Personal CRM	Active	San Francisco, CA, USA	3		Haz Hubble, Wyatt Lansford	Reveal
Paloma	S25	AI-native CRM for putting post-sales operations on autopilot	Active	San Francisco, CA, USA	3		Nazli Danis, Alex Avnit, Kaiwen Song	Reveal
Panels	S25	Audio Data for AI Labs	Active	San Francisco, CA, USA	2		Aaron Wenk, Jason Le	Reveal
Pangolin	S25	Identity-aware VPN and proxy for remote access to anything, anywhere.	Active	San Francisco, CA, USA	2		Milo Schwartz, Owen Schwartz	Reveal
PARES AI	S25	Helping commercial real estate brokers find and close more deals.	Active	San Francisco, CA, USA	3		Zihao Wang	Reveal
Phases	S25	Automating clinical trials, starting with patient recruitment.	Active	San Francisco, CA, USA	3		James Wall, Anton Zaliznyi, Jonathan van Wersch	Reveal
Playgent	S25	Sandboxes for AI agents	Active	San Francisco, CA, USA	2		Aniruddh Sriram, Neer Jain	Reveal
Pond	S25	Superhuman for text messages	Active	San Francisco, CA, USA	2		Aagam Dalal, Brian Williams	Reveal
Proliferate	S25	The autonomous engineering organization	Active	San Francisco, CA, USA	2		Pablo Hansen	Reveal
Qualify.bot	S25	AI phone agents for Commercial Lending	Active	San Francisco, CA, USA	2		Rohan Datta, Yash Goenka	Reveal
Reacher	S25	We automate creator marketing for the world's largest brands	Active	San Francisco, CA, USA	15		Jerry Qian, Bora Mutluoglu	Reveal