All startups in San Francisco Bay Area

Letter AI

San Francisco

Letter AI provides generative AI-powered sales enablement, unifying training, coaching, and content creation to improve win rates. Since launch, it has onboarded Lenovo and Redpanda as its first customers and secured funding from Y Combinat

WAYLINE

San Francisco

Wayline provides 24/7 support for property managers, serving as a dependable, around-the-clock partner in property management.

Helicone

San Francisco

Helicone is an open-source observability platform for LLM applications, delivering monitoring, optimization, and reliability tools to productionize AI systems. With ~4,000 GitHub stars, a thriving community, 20% MoM growth, and SOC 2 and GD

Stably AI

San Francisco

Stably AI focuses on AI-powered QA testing to help teams deliver software faster. Founded by experts who built testing infrastructure at Google and ML systems at Uber, it positions itself as a leader in AI-powered QA testing.

Toothy AI

San Francisco

Toothy AI automates back-office operations for dental clinics using large language models, led by founders with proven AI-enabled B2B track records (Chen’s SoftBank-backed $1M ARR AI email solution; Kerrigan’s pre-ChatGPT LLM campaign tool)

JustAI

San Francisco

JustAI is a marketing technology company that uses AI to enable 1-to-1 hyper-personalized messaging and continuous always-on testing, reducing operational overhead and accelerating rapid marketing experimentation by moving away from traditi

Origami

San Francisco

The company builds vertical AI agents to handle sales research and develops custom AI web agents. Co-founded by Finn Mallery and Kenson Chung, who previously served as CTO of an enterprise sales platform with $1B+ revenue clients; partnersh

Undermind

San Francisco

Undermind is an AI-powered research agent used by thousands of experts, including top pharma R&D firms and university libraries. Described as the most intelligent science search and synthesis engine, it aims to reinvent research by augmenti

Jiga

San Francisco

Jiga builds a digital, automated, data-driven platform that streamlines procurement of manufactured parts directly from vetted suppliers, connecting buyers with trusted manufacturers to transform traditional manufacturing sourcing.

Terradot

San Francisco

Terradot, a San Francisco Bay Area public-benefit MRV platform, uses ground truth sampling, remote sensing, and AI to measure soil carbon at scale for carbon removal, focusing on emerging economies; backed by $58.2M from investors and 300,0

Constant

San Francisco

Constant is a private credit investment platform focused on private credit investments.

Lapel

San Francisco

Lapel builds data infrastructure and tools that help customer-facing teams understand every customer and act on insight at scale, pursuing hospitality at scale by unifying context and coordinating action.

Faction

San Francisco

The company builds autonomous AI agents that automate $2T of industrial goods through the supply chain, processing orders, generating quotes, and making inventory decisions without human intervention; it operates without users or human-in-t

Patterns

San Francisco

Patterns aims to make data analysis accessible by using natural language processing and AI to analyze data, aiming to simplify analytics and transform business intelligence, with next-gen financial analysis and AI agents for reporting; tech

Operant AI

San Francisco

Operant AI is a cybersecurity leader securing AI and MCP across APIs, Kubernetes, LLMs, and agents. Gartner recognizes it in 2025 Market Guides for AI TRiSM and API Threat Protection, and it holds a Tech Ascension Award for Cloud Security.

Luthor

San Francisco

Luthor is the first AI-native compliance firm for RIAs and broker-dealers, delivering a full-stack program that automates SEC, FINRA, and FinCEN compliance by blending purpose-built LLMs with human expertise (including former SEC attorneys)

Sample Healthcare (YC W24)

San Francisco

Sample Healthcare is a profitable San Francisco-based healthcare AI company backed by notable investors including Kulveer Taggar, Zack Kanter, Homebrew Ventures, Y Combinator, and alumni from Retool, Stripe, Ambience Healthcare, and Watersh

Ckl10915@laoia.com

Mountain View

Google is a global technology leader focused on AI-powered products and services, developing AI solutions and scalable infrastructure to deliver tools and platforms that empower users, developers, and businesses worldwide.

Roforco

San Francisco

Roforco builds viral AI consumer apps and games, with seven titles reaching over 100 million users and 10.2 million peak MAU. It maintains a community (100k+ TikTok followers, 64k+ Discord) and is founded by two ex-YC founders with Meta/Sna

ZeroEntropy

San Francisco

ZeroEntropy is a B2B software and services infrastructure company focused on AI-driven information retrieval over complex unstructured data. With a two-person founding team and Y Combinator Winter 2025 participation, it combines mathematics

Embedder

San Francisco

Embedder develops a coding agent for firmware development in embedded systems, enabling writing and testing firmware on real hardware with connections to physical tools. It indexes hardware documentation to provide hardware-specific context

AI Insurance

San Francisco

AI Insurance offers a platform for SMB insurers to run all business processes, aiming to do for SMB insurance what Salesforce did for SMB sales, targeting 10,000+ firms and $238B in admin waste, to digitize and automate claims and underwrit

Ello

San Francisco

Ello is an AI-powered education company aiming to improve literacy and learning outcomes for children and close educational gaps; backed by investors after YC W20 and a Series A, it pursues building the world’s first complete AI teacher for

Workplay Ventures

San Francisco

Mark Pincus Family Office, the investment vehicle of Zynga founder Mark Pincus, pursues diversified asset-class investments with emphasis on AI/ML, gaming, social networks/platforms, and web3, backed by a lean team (one analyst, a controlle

Emergent

San Francisco

Emergent enables anyone to build production software by describing requirements in natural language. Founded by Mukund Jha and Madhav Jha, it attracted 700,000 users and $10M ARR in two months, among fastest-growing AI companies, serving en

Synth

San Francisco

Synth helps agent developers maintain and improve their AI software by identifying problems and fixing them with changes to scaffolding code, prompts, and models. It builds Research Engineering Agents and focuses on advancing AI agent devel

Graphite

San Francisco

Graphite is a Vertical AI Growth Agency that drives sustainable revenue growth through SEO, content, and AEO, serving clients such as Webflow, Notion, MasterClass, and Captions.

Woz

San Francisco

Woz helps non-technical founders turn ideas into scalable software by combining expert engineering, business tools, and go-to-market support, bridging AI-generated code with real-world growth and accelerating the path from concept to market

Relling

San Francisco

Relling develops data and infrastructure for world models, building advanced datasets to power world-models for humanoid robots and AR systems.

Stratus Aviation

San Francisco

Stratus Aviation, a YC-backed aviation tech startup, is building an intelligence layer for airport operations by converting live ATC radio, ADS-B, and sensor data into real-time situational awareness, and it participated in Y Combinator bat

PAX Markets

Redwood City

PAX Markets is a Redwood City-based exchange and co-located trading facility that co-designs hardware and software to run the matching engine on-chip, enabling ultra-fast crypto-to-Wall Street trading; it currently uses AWS FPGA F2 and aims

JustPaid

Mountain View

JustPaid offers B2B billing automation from Mountain View, CA, with about 20 employees. Led by CEO/cofounder Daniel Kivatinos and cofounders Anelya Grant and Vinay Datta Pinnaka; Daniel co-founded DrChrono (acquired 2021) and Vinay ran DrCh

Bunkerhill Health

San Francisco

Bunkerhill Health translates AI algorithms from leading research institutions (Stanford, Harvard, Johns Hopkins) into clinical use, bridging academic innovation and patient care. It markets a scalable AI healthcare solution and invites cust

Benchify

San Francisco

Benchify builds a reliability layer for AI-generated code, ensuring dynamic builds and self-healing pipelines so AI-powered software runs reliably and securely without human babysitting. Founded by Juan Castaño and Max von Hippel.

Fizz

San Francisco

Fizz is a fintech and #1 money app for young adults, helping users build credit and manage money. Backed by Kleiner Perkins, SV Angel, Y Combinator, and the founders of eight Unicorns, it serves students at 300+ universities from NYC.

Artificial Analysis

San Francisco

Artificial Analysis is an AI benchmarking and insights firm that helps labs and enterprises understand AI capabilities and shape strategies, serving as go-to authority for labs, enterprises, media, and policymakers; benchmarks are trusted b

ThirdLayer

San Francisco

ThirdLayer, behind Dex, reimagines the browser as an intelligent workspace with Dex, the AI Browser Copilot. Backed by seven-figure funding from top-tier investors, it has a small, fast-moving team and aims to solve how humans and computers

Agtonomy

San Francisco

Agtonomy is an AI and software services company specializing in intelligent automation for agriculture, turf, and beyond, with partnerships with leading equipment manufacturers; its platform is embedded into industrial machinery to enable a

Rinse

San Francisco

Rinse is an early, well-funded startup building the One Medical for dental to redesign the dental industry from the ground up, backed by investors such as Y Combinator, Optum Ventures, PJC, Global Founders Capital, and Liquid 2, among other

Composite

San Francisco

Composite, formerly PostEvent, is a cybersecurity company building autonomous systems to mitigate cyber adversaries and automate security alert responses, led by Yang Fan Yun and Charlie Deane, aiming to become the action layer for security

Taskade

San Francisco

Taskade provides a real-time collaboration platform for remote teams, offering task lists, notes, mind maps, and integrated team chat in a single tool, positioning itself as the unified workspace for remote workers and distributed teams.

Cargo

San Francisco

Cargo redefines go-to-market execution by making teams leaner, faster, and engineer-driven, replacing SDR-heavy models with a hybrid manual-automation approach that enables full-cycle AEs. Its platform builds and scales AI-powered workforce

Conductor

San Francisco

Conductor, based in San Francisco, has a three-person in-person team including Omid and is building the first AI orchestrator; backed by Silicon Valley investors to sustain operations through rough patches.

RunRL

San Francisco

RunRL (X25) is a San Francisco–based reinforcement learning as a service provider delivering on-demand RL capabilities to B2B software and services infrastructure companies, operated by a three-person team led by founders Andrew Gritsevskiy

OneText

San Francisco

OneText, founded by former PayPal Checkout leaders, is a payments, AI, and marketing platform enabling payment via a phone number. Backed by Y Combinator, Coatue, Citi Ventures, Khosla Ventures, and founders of Warby Parker, Allbirds, Harry

Zensors

San Francisco

Zensors is a fast-growing tech startup recruiting a Sales and Biz Ops Lead to streamline go-to-market operations and deliver consistently excellent customer experiences for a growing business.

Kontigo

San Francisco

Kontigo is a USDC-based neobank for Latinos building a globally accessible, stable currency platform. By combining neobank services with USDC technology, it aims to provide stable, accessible financial infrastructure for its Latino communit

Apten

San Francisco

Apten is an omni-channel AI agent that automates sales and marketing conversations across SMS, voice, and email, personalizing follow-ups and leveraging CRMs; profitable with 30%+ MoM growth, serving healthcare, education, and home services

CreativeMode

San Francisco

CreativeMode enables players to create no-code Minecraft mods, expanding into a new category of gaming tools; in its first three months it built the most powerful no-code Minecraft modding platform and accounted for a double-digit share of

FlexDesk

San Francisco

FlexDesk helps corporate occupiers manage office and coworking portfolios, aiming to maximize workplace effectiveness and optimize real estate spend. It enables digital transformation in corporate real estate operations through data-driven

SuperTokens

San Francisco

SuperTokens develops open source authentication software for developers and organizations, aiming to offer an open-core, secure, flexible, and easy-to-use solution. It runs on premises for free, with a hosted tier, and is used by hundreds o

Openmart

Foster City

Openmart builds the world’s largest live directory of local businesses, a local data‑intelligence platform for querying millions of unstructured data from websites, catalogs, reviews, and social media. Founders Richard and Kathryn bring tec

Spaceium

San Francisco

Spaceium Inc, a YC S24 startup, is building space stations to refuel and repair spacecraft. It has multi-million-dollar contracts, plans a soon-to-fly demo mission, and secured one of the largest seed rounds in YC S24, signaling strong earl

Tortoise

Mountain View

Tortoise is a travel tech startup that reimagines how people explore the world by offering an intelligent platform that enhances travel discovery and engagement.

Social Radar

San Francisco

Social Radar is a San Francisco-based B2B software and services company with a three-person team, founded by Rohan Arora and Venkat Krishnan. It bills itself as the best way to search for posts, people, and comments across channels.

Candid Health

San Francisco

Candid Health uses data science and machine learning to automate medical billing and reduce costs in the US healthcare system. A Y Combinator W20 alum with strong investor backing and rising demand from potential customers.

Polymath Robotics

San Francisco

Polymath Robotics develops software to safely control all industrial vehicles and quickly bring autonomous vehicles to various industries. With about 20 employees, its engineering is based in SF Mission office three days a week as part of a

CodeAnt AI

San Francisco

CodeAnt AI, a Y Combinator-backed startup in code quality and security, uses AI-driven and deterministic fixes to improve code quality and safety, earning trust from unicorns and public companies and support from top Silicon Valley investor

DeepAware AI

San Francisco

DeepAware AI is a YC-backed startup delivering AI-powered infrastructure management and autonomous robotics for data centers, aiming to improve security, uptime, and energy efficiency by up to 30% for operators and AI infrastructure provide

Event Horizon Labs

San Francisco

Event Horizon Labs is building the Post-Human Trader, an autonomous system that turns raw compute and data into alpha, designed to trade without the friction or bias of human emotion.

AIVideo.com

San Francisco

AIVideo.com is a vertically integrated studio that brings creators together every 10 weeks to produce content in a mansion, using viral feedback to productize ideas. It grew to $1.3M ARR in 12 months and seeks 10x growth, inviting talent.

Proven Group

San Francisco

PROVEN is a technology-first skincare company that uses data and machine learning to tailor skincare decisions for individuals, anchored by the Beauty Genome Project, which analyzes 8 million reviews, more than 100,000 products, 20,000 ingr

Godela

San Francisco

Godela, a San Francisco-based, three-person B2B software startup founded by Abhijit Pranav Pamarty and Cinnamon Sipper, builds AI models for engineers and scientists, including first Physics Foundation Model that learns from simulation, exp

Dialtone

Mountain View

Dialtone builds the platform layer for enterprise-grade agentic AI, enabling enterprises to turn cross-functional work into intelligent, self-running workflows with Dialtone Agents used by leaders across technology, sports & entertainment,

Weave Robotics

San Francisco

Weave Robotics develops personal robots for home use and positions itself as the maker of the first home-built personal robots, with plans to ship its home-based robots in 2025.

Contextual AI

Mountain View

Contextual AI is a leader in retrieval-augmented generation (RAG) whose platform lets enterprises build specialized RAG agents for expert knowledge work, boosting productivity for thousands of subject-matter experts; Fortune 500 clients inc

WoodsideAI

Palo Alto

No company description available.

Mentum

San Francisco

Mentum builds an LLM-powered, AI-native workflow tool for supply chains, helping procurement find and buy goods globally. Backed by Gradient Ventures and Y Combinator, it targets a $300B/year market and partners with manufacturers across re

Arnata

San Francisco

Arnata develops AI Workers, autonomous agents for logistics teams designed to operate within their workflows.

Vilya

South San Francisco

Vilya is a computational biotechnology company creating a novel class of medicines by exploring uncharted chemical space within cyclic peptides and designing new structures with advanced computing; co-founded by IPD scientists led by David

Pangolin

San Francisco

Pangolin is an open-source proxy and network/ingress orchestration platform that securely exposes applications with identity-aware access control. It has a vibrant community around fosrl/pangolin on GitHub with 15k+ stars, 315k+ deployments

Anglera

San Francisco

Anglera, a Y Combinator S24 company, uses AI agents to transform messy product data into structured, AI-ready listings and automate catalog management, positioning itself as infrastructure for intelligent commerce; led by Amay Aggarwal and

OneStopKitchen

Palo Alto

Overjet is a U.S.-based dental artificial intelligence company. A Series C startup that recently closed a $53.2 million round, with total funding around $133 million and a roughly $550 million valuation, underscoring its prominence in the d

Vorticity

Redwood City

Vorticity is developing a radically new silicon chip architecture and end-to-end system to dramatically accelerate scientific computing problems, innovating from silicon design to memory, power delivery, cooling, algorithms, and system arch

Surface Labs

San Francisco

Surface Labs builds an AI-powered marketing operations platform for B2B clients, generating tens of thousands of leads monthly for dozens of customers. Backed by investors and a remote team, founders include CEO Saharsh Agrawal and Arjun Sa

Apero Health

San Francisco

Apero is a San Francisco-based Y Combinator-backed startup simplifying medical billing with greater transparency; it has raised about $240 million from notable investors and serves 30+ practices, some with 50+ providers, while actively hiri

Vooma

San Francisco

Vooma builds an AI agent and automation platform for logistics, leveraging AI research and autonomous-vehicle expertise. Founded by Jesse Buckingham and Mike Carter, it has seed funding from Tier 1 investors and enterprise contracts with le

CropX

San Francisco

CropX is one of the world’s fastest-growing AgTech providers, deploying solutions in over 50 countries across arable continents with an all-in-one, easy-to-use platform, expanded via acquisitions to scale tech globally, and backed by leadin

COVU

Redwood City

COVU provides technology, real-time service, and sales support to insurance agencies to help them thrive, delivering a holistic, customer-focused experience and helping agencies compete amid industry disruption.

InterPayments

San Francisco

InterPayments is an independent Managed Surcharge Recovery Service helping Fortune 1000s compliantly recover credit card surcharges in the US and Canada, managing compliance and indemnifying clients against non-compliance, positioning itsel

Rulebricks

Palo Alto

Prefix, a Palo Alto-based startup with a small team led by founder Sid, backs early investors and angels. It automates desktop tasks for fast-moving customer support and product teams that cloud integrations cannot reach and is open to remo

Meridian Industries

San Francisco

Index is a modern BI platform for dashboards and metrics, prioritizing consistency, simplicity and familiarity to feel timeless and powerful. Backed by Google, Slack, Kleiner Perkins and founders of Eventbrite, Box and Okta, it targets a la

Text.ai

San Francisco

Text.ai is a consumer-first, AI-native company building first AI-native group chat platform where every conversation is intelligent, collaborative, and effortless. Backed by Y-Combinator, it aims to make multiple humans happy through true g

Wafer

San Francisco

Wafer provides a GPU optimization platform for AI model training and inference, plus infrastructure for inference and GPU optimization, focused on optimized AI inference tailored to each stack.

OfOne

San Francisco

OfOne uses voice AI to transform drive-thru experiences for top-50 restaurant chains, automating tens of thousands of orders weekly during an active rollout. Backed by Gaia Ventures, SignalFire, Correlation Ventures, and Y Combinator, it is

BrowserOS

San Francisco

BrowserOS develops an open-source agentic browser to host a generalist AI agent that performs tasks in the browser. It invites collaboration on building browser agents and training Large Action Models, positioning itself as a developer of b

GoodFin

San Francisco

GoodFin is a seed-stage startup unlocking private wealth and markets with AI-native, human-driven platforms for hyperpersonalized, automated investments in alternative assets, targeting the next generation amid the largest intergenerational

QualGent

San Francisco

QualGent is an AI-powered QA tester for mobile apps, helping teams catch bugs before production and ship faster without extra QA hires; it was founded by Google veterans and is a YC X25 participant.

AgentHub

San Francisco

AgentHub is an early seed-stage startup building a simulation and evaluation engine for AI agents, providing the infrastructure layer for agent-driven products. Its team includes the former Apple Foundation Model Evaluation lead and CMU/MIT

Rebolt

San Francisco

Rebolt is building a no-code platform that lets companies create and deploy custom full-stack applications in minutes, enabling both technical and non-technical teams to replace spreadsheets and generic SaaS with their own internal tools.

Ultra

San Francisco

Ultra is a life-planning platform that helps students navigate college admissions and life decisions. Founded by Oliver Zou, it serves the US and China and is backed by Y Combinator and General Catalyst, with Uber and Lyft angel investors.

Because

Redwood City

Because Market operates in consumer health and personal care, serving over 1,000,000 customers; its products are widely available at Walmart, CVS, Amazon, and Target.com, positioning it as a leading, accessible brand in its category.

Box

Redwood City

Box is an online file sharing and cloud content management service offering unlimited storage, custom branding, and administrative controls.

LuxVue Technology

Santa Clara

Santa Clara-based · computers and electronics manufacturing.

Aclima

San Francisco

Aclima is pioneering an entirely new way to diagnose the health of our air and track climate-changing pollution. Powered by our network of roving and stationary sensors, Aclima measures air pollution, greenhouse gases, and toxics at unprecedented scales -- block-by-block and with source-level resolution. Our professional analytics software translates billions of scientific measurements into environmental intelligence for governments, companies, and communities. Aclima is a purpose-driven technology company catalyzing bold climate action that protects public health, reduces emissions, and delivers clean air for all. We're backed by top-tier investors, including Plum Alley, Radicle Impact, Microsoft Climate Innovation Fund and Bosch.

MoEngage

San Francisco

MoEngage is an insights-led customer engagement platform for the customer-obsessed marketers and product owners. We help you delight your customers and retain them for longer. With MoEngage you can analyze customer behavior and engage them with personalized communication across the web, mobile, and email. MoEngage is a full-stack solution consisting of powerful customer analytics, AI-powered customer journey orchestration, and personalization - in one dashboard From Fortune 500 enterprises such as Deutsche Telekom, Samsung, and Ally to mobile-first brands such as Flipkart, OLA, and bigbasket - MoEngage has helped amplify customer engagement for all. Product managers and growth marketers can use MoEngage to provide a personalized experience throughout the customer lifecycle stages – from onboarding to retention to growth. What makes MoEngage different, is a full-stack solution consisting of powerful customer analytics, AI-powered customer journey orchestration and personalization capabilities - in one dashboard.

Zynga

San Francisco

Zynga was founded in 2007 with the vision that play would become one of the core activities on the Internet. We pioneered social games with the belief that if we could make games simple, accessible and social the world would start playing. We are excited that games have grown to become the second most popular activity by time spent, even surpassing email. But we have a lot of hard work, innovation and growth ahead of us to create a future where social gaming is a daily habit for everyone. Zynga is a global leader in interactive entertainment with a mission to connect the world through games and a wholly-owned label of Take-Two Interactive Software, Inc. With a massive global reach in more than 175 countries and regions, the combined diverse portfolio of popular game franchises has been downloaded more than 5 billion times on mobile, including CSR Racing™, Dragon City™, Empires & Puzzles™, FarmVille™, Golf Rival™, Hair Challenge™, Harry Potter: Puzzles & Spells™, High Heels!™, Merge Dragons!™, Merge Magic!™, Monster Legends™, Toon Blast™, Top Eleven™, Toy Blast™, Two Dots™, Words With Friends™ and Zynga Poker™.

Ask.com

Oakland

Ask Media Group is a collection of websites that help curious people find the information they need.

Cardiokinetix

Menlo Park

Menlo Park-based · medical equipment manufacturing.

Axiad

San Jose

San Jose-based · computer and network security.