All startups in San Francisco

Opal Security

San Francisco

Opal provides enterprise identity and access management solutions. It is based in New York City and San Francisco and backed by Greylock, Battery Ventures, and Silicon Valley CISO Investments, serving hypergrowth startups and Fortune 500 co

TrueClaim

San Francisco

TrueClaim provides an AI-enabled platform for health plans, focused on advancing health-plan technology and modern operations.

Rulebase

San Francisco

Rulebase delivers visibility and confidence to modern support teams, helping them understand and improve the customer experience in real time. Its technology stack includes Python, React, and Electron JS.

InspectMind AI

San Francisco

InspectMind AI delivers AI-powered documentation and reporting tools for construction and design professionals, simplifying paperwork and streamlining on-site workflows to help workers spend less time at a desk and more time building.

Uiflow

San Francisco

Y Combinator is a leading startup accelerator founded in 2005 by Jessica Livingston that runs programs to support startups, including the YC Program, Startup School, and Co-Founder Matching, and provides resources, deals, and ongoing guidan

Runway Financial

San Francisco

Runway is a collaborative business planning platform that replaces spreadsheets with a modern planning solution, democratizing planning across the organization. Its customers include AngelList, Superhuman, ConvertKit, Lambda Labs, and Sandb

Headquarters

San Francisco

The company provides best-in-class concussion care accessible to everyone, based in San Francisco, and is backed by world-class doctors and investors, including the founding teams of OpenAI and Facebook AI Research.

Sylvan Labs

San Francisco

Sylvan Labs specializes in post-sales enablement for enterprise software, aiming to become the category-defining platform and a billion-dollar business by product- and GTM-led growth, not headcount. It pursues expansion through private equi

Arini

San Francisco

Arini is a leading AI solution for patient communication in dental care, serving dentists in the United States and Canada, with over 10,000 daily calls handled and a mission to make generative AI accessible to those who need it most.

Prophecy Gov

San Francisco

GovTech startup building a nationwide data network and AI agents for US cities to enable AI-powered municipal solutions, targeting a $3 trillion annual city spend; 15+ cities in 10+ states with plans for 100+ by 2026, and $2M raised.

Helium

San Francisco

Helium automatically generates and tests paywalls to improve app conversion. Backed by Y Combinator, Google, and leaders from OpenAI and Uber, the company is positioned in the paywall automation space for apps.

Hadrius

San Francisco

Hadrius automates and consolidates securities compliance for investment firms, serving over 500 institutions and more than $5 trillion AUM. A YC W23 alum with over $10M ARR, it’s described as fastest-growing company in its space and an emer

Fig

San Francisco

Fig builds AI agents that power the backbone of the U.S. food manufacturing sector. Its platform connects domain-specific agents to automate manual workflows, backed by Innovation Endeavors and industry leaders, and collaborates with manufa

Luminade

San Francisco

Founded by Sriram (ex-Luminade) and Mikhail (ex-Google, four-time competitive skydiving world champion); the two-person team builds a conversational voice layer for work that delivers actions in-chat, with ownership over product direction a

Resonate AI

San Francisco

An AI-driven platform that helps healthcare practices capture new patients by converting missed calls into patient inquiries, led by a founder with 10+ years of AI experience and five patents who previously built 0-to-1 ventures at Microsof

LedgerUp

San Francisco

LedgerUp is an AI-driven operations teammate for billing and accounts receivable that automates contract-to-cash workflows, reducing busywork for teams and driving growth.

Sutro

San Francisco

The company builds large-scale AI inference infrastructure to empower organizations to deploy and benefit from AI at scale, increasing human leverage, productivity, and discovery by delivering scalable AI capabilities and enabling greater h

Nexus Intelligence

San Francisco

An a16z-backed software startup building AI-enabled industrial automation systems for Fortune 100 customers across automotive, food, energy, and other sectors, aiming to become the platform for developing and deploying modern industrial aut

Agora

San Francisco

Harmonic is a startup discovery engine that converts fragmented sources into structured knowledge about startups, investors, and people, mapping the ecosystem and helping the most promising founders get found and funded by the world's large

Cleanlab

San Francisco

Cleanlab democratizes safe, trustworthy generative AI and leads with cleanlab, an open-source ML data quality framework used by top companies. Its research in AI conferences and wide adoption establish Cleanlab as a leading provider of resp

Harmonic

San Francisco

Harmonic is a startup discovery engine that converts fragmented sources into structured knowledge about startups, investors, and people, mapping the ecosystem and helping the most promising founders get found and funded by the world's large

Trifetch (Stealth)

San Francisco

TriFetch automates scheduling, referrals, and insurance authorizations in live clinics in Northern California using AI voice and browser agents, founded by UCLA PhD researchers. An early-stage startup with real paying customers, $1.9M raise

Inductive Bio

San Francisco

Inductive Bio uses data, machine learning, software, and domain expertise to rapidly solve ADMET problems with speed and precision, streamlining ADMET workflows as a focused provider in the ADMET problem space.

Greptile

San Francisco

Greptile, a San Francisco AI tooling startup with a six-person team, builds an AI expert on codebases accessible via an API, serving 1,000 software teams; raised $5.3M from Y Combinator, Initialized Capital, SV Angel, and Paul Graham, with

Stainless

San Francisco

✱ Stainless provides robust & polished SDKs for your REST API.They're idiomatic, type-safe, and engineered to feel like handwritten code.API-first companies like OpenAI, Anthropic, Meta, Cloudflare, and Scale use Stainless to generate SDKs

Conversion

San Francisco

Conversion is a modern marketing automation platform for high-growth teams, making B2B marketing faster, smarter, and more personal. Trusted by over 5,000 businesses, it serves customers like Abacum, Clay, Hockeystack, and 11x, helping team

LlamaIndex

San Francisco

LlamaIndex offers an open-source framework that lets developers build agents to parse, extract insights, and act on enterprise documents, reasoning over data and scaling for production. It has 4M+ monthly downloads and 200M+ documents proce

Column Tax

San Francisco

Column Tax democratizes access to financial help by delivering game-changing tax solutions for everyday people, highlighting gaps in financial guidance and the need for affordable tax support (over 100 million Americans can’t cover a $1,000

Verse

San Francisco

Organizations today are under growing pressure to navigate the transition to clean energy — not just to meet sustainability goals, but to manage risk, control costs, and build long-term resilience. Yet the complexity of energy markets and a lack of accessible tools have made it difficult for most companies to take meaningful action. Verse was created to change that. Our mission is to make the case for clean energy irrefutable. Through our AI-powered platform, Aria, we help organizations plan, procure, and operate clean energy to achieve their financial and sustainability goals. Verse transforms clean energy ambition into action — giving businesses the clarity and confidence to lead in a rapidly evolving energy landscape.

Bun

San Francisco

Bun is an incredibly fast JavaScript runtime, bundler, transpiler, and package manager.

HockeyStack (YC S23)

San Francisco

The company offers a dedicated operating system for inbound B2B revenue, delivering a specialized platform for businesses in B2B markets.

Speakeasy

San Francisco

Speakeasy is a developer platform for building and deploying agent tools as hosted MCPs, serving startups to Fortune 500s including LaunchDarkly, Fivetran, and Verizon; it emphasizes open development, a GitHub presence, and rapid team growt

Thunder

San Francisco

Get Salesforce and Amazon Connect right. Now, and forever. Thunder is a trusted Salesforce and Amazon Connect partner. Get GSI-level talent at a boutique consulting partner. We are an all-remote team of seasoned Salesforce and Amazon Connect consultants, based from Hawaii to Brooklyn, NY - and everywhere in-between.

Composio

San Francisco

Composio builds infrastructure allowing agents to connect with GitHub, Gmail, Notion, and Salesforce, bridging agents and tools. It raised a $25M Series A from Lightspeed, grew ARR 3x by 2026, and counts Wabi, Glean, and Zoom as customers.

Cynch AI

San Francisco

Most financial decisions are made without expertise, analysis, or data. Meanwhile, the most successful people and companies have access to expensive consultants with deep financial expertise. Our vision is to level the playing field. We’re combining reasoning, machine learning, and generative AI to capture financial expertise and make it available to everyone. We’re initially focused on small businesses, helping them to achieve better outcomes for their owners, their employees, and their communities. How do you combine reasoning, machine learning, and generative AI? For us, this is the most interesting and challenging problem in AI today. Accounting is a “goldilocks” domain for tackling these problems — it’s sufficiently constrained to be tractable but sufficiently complex to require something new. Accountants will tell you that accounting is all about rules, judgement, and understanding your client — reasoning, learning, and generative AI. We are a seasoned team that is excited to take on a big technical challenge with a big impact. We care about the ethical implications of our work and are excited to work with others that do too.

Clarity Pediatrics

San Francisco

Clarity Pediatrics is reimagining pediatric chronic care, starting with ADHD. Over 11% of American children are diagnosed with ADHD, and for parents it can feel impossible to get the right care. We are building a virtual pediatric ADHD clinic that delivers trusted care to all families. Our new clinical model is tech-enabled, backed by the best science, and has the potential to deliver exceptional health outcomes to transform a child’s trajectory.

LiteLLM

San Francisco

LiteLLM develops open-source developer tooling for the AI software space, enabling access to multiple LLM APIs. It has raised $1.6M in seed funding from Y Combinator, Gravity Fund, and Pioneer Fund, and reports $7M+ ARR while remaining mean

Escape Technologies

San Francisco

Escape is the only DAST that works with your modern stack and tests business logic instead of missing headers. It fits right into your modern stack, supporting modern web frameworks, APIs, CI/CD, and Wiz without hassle. With Escape, you can: 1. Document all your APIs & Web Apps in minutes and enrich your inventory with seamless integrations. 2. Discover vulnerabilities even at a business logic level with our proprietary AI-powered algorithm. 3. Remediate issues efficiently with code snippets tailored to each framework

Delightree

San Francisco

Delightree is an all-in-one franchising tech platform for emerging franchise businesses seeking to scale while preserving brand promise, offering integrated tools to streamline launch and day-to-day operations and maintain consistency acros

Spherecast (YC S24)

San Francisco

Spherecast develops an AI-driven platform for planning and execution across supply chains, making physical flows programmable like code. It is backed by Y Combinator, has worked with AG1, and employs seven experts in operations research, co