SaaS startups in San Francisco Bay Area

Pax

San Francisco

Pax is the first AI-powered duty drawback broker that automates and optimizes duty refunds, delivering 15% more refunds and a 99% reduction in processing time, founded by experts from Charter Brokerage, MIT, Google, Amazon, and Flexport.

Amari AI

San Francisco

The company provides AI-powered automation for customs clearance processes tailored to customs brokers, freeing them from repetitive work to focus on relationships and growth; it has helped brokers clear over $150 million in goods.

Klarity

San Francisco

Klarity Health provides high-quality, worry-free and low-cost telehealth services, ensuring comprehensive care is within reach. Whether you're seeking mental health support, weight management, or counseling and therapy, Klarity is your trusted marketplace for health and well-being. We have facilitated over 350,000 telehealth visits and are trusted by 80,000+ patients and 400+ medical specialists. Check out our 5-star ratings: https://www.reviews.io/company-reviews/store/helloklarity

Retell AI (YC W24)

Redwood City

Retell is a leading voice AI agent platform serving healthcare, insurance, financial services, and logistics; after a $4.7M seed round, it reached $5M annualized revenue in 10 months and is backed by Alt Capital, Y Combinator, and other inv

Thunder Compute

San Francisco

Thunder Compute, backed by Y Combinator, raised a $4.5 million seed round and aims to revolutionize GPU utilization, with over $500,000 in revenue in six months and rapid scaling.

Willow

San Francisco

Willow is building a voice operating system that enables computer control via voice, writes for you today, takes actions for you tomorrow, and anticipates needs before you ask. It has Uber adoption; backed by Y Combinator and Box Group.

Remy

San Francisco

Remy builds autonomous AI product teams, beginning with design agents, to provide a 24/7 visual exploration and brainstorming partner for software teams, with the aim of becoming an autonomous teammate that ideates, designs, and ships softw

Latent

San Francisco

Latent develops AI-driven medical intelligence software to optimize hospital and clinic workflows, speed medication access for patients, and boost provider revenues, collaborating with major healthcare systems to expand fast, affordable pro

Secureframe

San Francisco

Secureframe provides seamless cybersecurity compliance software for thousands of businesses, aiming to revolutionize the field; recognized as a trusted leader by Forbes, TechCrunch, and The Wall Street Journal, and backed by Kleiner Perkins

Slope

San Francisco

Slope partners with large companies to offer AI-enabled credit to businesses via strategic financing partnerships; it has raised $252M from notable investors including Sam Altman, JP Morgan Chase, Union Square Ventures, and Y Combinator to

Theta

San Francisco

Theta translates real-world workspaces into simulation environments and trains expert-level agents that deeply understand those environments.

Weave

San Francisco

Weave applies machine learning to engineering data, scanning every pull request to estimate its duration and evaluate review quality and work type, enabling teams to gain visibility and improve predictability in software delivery.

Ivo

San Francisco

Ivo develops generative AI products for legal teams and an AI-native platform that automates contract review and other legal work, helping teams reduce time, effort, and cost and accelerate time-to-close.

Fay Nutrition

San Francisco

Fay is a healthtech company using AI-powered preventative care to empower people and care teams to avert deterioration, with thousands achieving measurable improvements and $75 million raised from notable investors including General Catalys

11x

San Francisco

11x builds fully autonomous digital workers that automate specific jobs end-to-end, aiming to sell work, not software; a pioneer in digital workers with hundreds of customers including Brex, Otter AI, and Hasura, and millions in revenue in

Fieldguide

San Francisco

Fieldguide offers a vertical AI platform for assurance and advisory firms, founded by ex-Big Four practitioners and tech leaders; headquartered in San Francisco, remote-first, backed by notable investors, trusted by top CPA firms to improve

PostHog

San Francisco

PostHog offers a product analytics platform to help create successful products. It gained traction, including B2B Hacker News launch, 100k+ users, 97% word-of-mouth growth, and top 0.01% GitHub ranking, hosted in US or EU with SOC2, GDPR, a

MERGE

San Francisco

Merge is a leading provider of customer-facing integrations and agent tools for frontier LLMs, serving thousands of customers including Fortune 500s and B2B SaaS firms, with offices in San Francisco, New York, and Berlin.

Merge API

San Francisco

Merge is a leading provider of customer-facing integrations and agent tools for frontier LLMs, serving thousands of customers including Fortune 500s and B2B SaaS firms, with offices in San Francisco, New York, and Berlin.

Supergood

San Francisco

Supergood combines observability data with human-in-the-loop code generation to create new integrations and fix existing ones.

DeepTrust

San Francisco

DeepTrust builds the trust layer of the internet by securing live voice and video calls across platforms and automating social-engineering detection and response, providing just-in-time assistance to boost productivity, security, and compli

ScopeAI

San Francisco

Scope develops AI-enabled software to accelerate industrial inspection workflows, from reporting to asset integrity, and works with leading TIC players to shorten field reporting to 12 minutes and onboard clients seven times faster.

Centralize

San Francisco

Centralize is an AI-powered relationship intelligence platform for enterprise sales teams. Its founding team launched Facebook Shops, Slack Huddles, and Modern Treasury Reconciliation, and it is backed by Y Combinator, Salesforce Ventures,

Fazeshift

San Francisco

Fazeshift offers an AI-driven accounts receivable platform that automates AR processes, reduces manual work, and accelerates revenue cycles for large enterprises. Backed by Y Combinator, Gradient (Google’s AI venture arm), and founded by Ha

Loma

San Francisco

Loma is a click-to-deploy commerce platform for online communities and creators, enabling them to own commerce. Founded by engineers from Instagram, Nextdoor, Wayfair, and Zillow, it has a pre-seed led by Lerer Hippeau and seed round driven

Nooks

San Francisco

Nooks is a platform that transforms sales reps from manual laborers to scientists by equipping teams with analytics. It grew from $0 to $5M ARR in two years, expanded 4x in 2023, led by Forbes 30 Under 30 founders.

Noto

San Francisco

Noto provides AI-native vertical software for after-school businesses—tutoring centers, music and art schools—to reduce administrative tasks like registration, rescheduling, and payments, letting owners focus on teaching. Led by CEO AJ Ding

Burnt

San Francisco

Burnt is building an AI brain for global supply chains, starting with the food sector; it already automates over $10M in monthly orders without humans, has raised $3.8M, and plans enterprise deployments across freight, manufacturing, and di

Recall.ai

San Francisco

Recall.ai provides infrastructure for processing meeting data and metadata, enabling enterprises to analyze and derive insights from meetings. Founded in 2020 and headquartered in San Francisco, it serves over 1,000 customers.

Paraform

San Francisco

Paraform is a recruiting marketplace that connects companies with a network of specialized recruiters to fill roles faster and more accurately. Backed by prominent investors and partners like Palantir and Decagon, it aims to be the first en

Tavus

San Francisco

Tavus is a human computing research lab and pioneer in human computing, building AI Humans to bridge the gap between people and machines and teach machines to be human. Founders Hassaan Raza and Quinn Favret lead Tavus, which is growing.

Unusual

San Francisco

Unusual defines Brand Engineering, a research field that measures how LLMs perceive brands and benchmarks brand performance against peers. Through applied interpretability and narrative-control experiments, it aims to let people shape their

Medra

San Francisco

Medra uses AI, robotics, and biology to accelerate life science research and eradicate disease, building a Scientific Physical AI platform to scale lab work and generate orders of magnitude more data for faster drug development and biology

AirOps

San Francisco

AirOps is the first end-to-end content engineering platform for marketing teams, helping brands get found and stay found in the AI era. With hubs in San Francisco, New York, and Montevideo, it serves marketers and is backed by prominent inv

Firebender

San Francisco

Firebender is an AI software company that develops AI coding assistance tools. Founded in 2024, it has raised $3.5 million in funding and currently has a team of three.

Argos

San Francisco

Argos builds the AI operating system for in-house legal teams, is based in San Francisco, California, and has $3.5M pre-seed funding as it enters an early stage with pilots launching soon.

Synch

San Francisco

Synch, based in New York City, is the first AI-powered Salesforce system of engagement, backed by Y Combinator and executives from Retool, Ramp, and Superhuman. It enables enterprises to manage their Salesforce environment using natural-lan

HappyRobot

San Francisco

HappyRobot offers an AI-native operating system for real economy, starting with supply chains. It has raised $62M, including a $44M Series B in Sept 2025, from YC, Andreessen Horowitz, and Base10, led by Pablo and Javier Palafox and Luis Pa