3404 matching
Cognition
San Francisco
The company is an applied AI lab that builds end-to-end software agents and collaborative AI teammates, enabling engineers to focus on more interesting problems and empowering teams to pursue ambitious goals; it markets Devin as the first A
Thinking Machines Lab
San Francisco
Thinking Machines Lab is a San Francisco AI research startup founded in 2025 by former OpenAI CTO Mira Murati, building interpretable, collaborative AI systems for professional and enterprise use. Its first product, Tinker, helps developers fine-tune models without managing distributed infrastructure.
Sierra
San Francisco
San Francisco-based · ai & machine learning.
Poolside
San Francisco
Poolside is building the world's most capable AI for software development, focusing on distributed training and inference of large language models for source code generation, with a mission to unlock developers' potential through AI for sof
The Bot Company
San Francisco
The Bot Company builds household robots to give people back time, pursuing in-house AI, software and hardware. It plans to deploy millions at home before expanding, and has raised $300M, including a $150M Greenoaks-led round, valuing the co
Decagon
San Francisco
Decagon is a leading conversational AI platform delivering concierge customer experiences with AI agents across chat, email, and voice in any language. It serves brands like Hertz, Eventbrite, Duolingo, and Oura and is backed by Accel and A
Decart
San Francisco
Decart provides efficient systems-level AI infrastructure that dramatically accelerates training and inference of the largest generative models, enabling Decart to train its own foundational interactive models and offer real-time access to
Cursor
San Francisco
Anysphere develops Cursor to automate coding and build the premier tool for professional programmers, driven by research, design, and engineering from a San Francisco team backed by investors; its engineers and scientists have a track recor
Corgi
San Francisco
Corgi is an AI financial infrastructure company focused on building AI-enabled financial infrastructure, placing it at the intersection of artificial intelligence and finance.
LMArena
San Francisco
LMArena, created by UC Berkeley researchers, is an open platform for accessing and comparing leading AI models, where users rate responses and help build a public, real-world leaderboard to increase transparency in AI progress.
Assort Health
San Francisco
Assort Health offers what it calls the most comprehensive patient experience platform, handling 115M+ interactions since 2023 with 98%+ resolution, 99% scheduling accuracy, 4.4/5 patient satisfaction, and 15x revenue growth since Q4 2024, l
Factory
San Francisco
Factory is a platform for agent-driven software development. It serves customers such as MongoDB, Framer, Empower, Zapier, and Eightfold AI, and raised a $15 million Series A led by Sequoia Capital.
Cartesia
San Francisco
Cartesia builds the next generation of AI—ubiquitous, interactive intelligence that runs wherever you are. It maintains a Discord community (discord.com/invite/cartesia) and showcases its work at cartesia.ai.
Together AI
San Francisco
Together AI is a research-driven AI cloud infrastructure provider. Our purpose-built GPU cloud platform empowers AI engineers and researchers to train, fine-tune, and run frontier class AI models. Our customers include leading SaaS companies such as Salesforce, Zoom, and Zomato, as well as pioneering AI startups like ElevenLabs, Hedra, and Cartesia. We advocate for open source AI and believe that transparent AI systems will drive innovation and create the best outcomes for society.
Prime Intellect
San Francisco
Prime Intellect builds open-source decentralized AI training infrastructure that pools global compute so teams can train, fine-tune, and RL-train their own models and agents.
Inferact
San Francisco
Inferact is a startup founded by creators and core maintainers of vLLM, the most popular open-source LLM inference engine. Our mission is to grow vLLM as the world's AI inference engine and accelerate AI progress by making inference cheaper and faster.
Higgsfield
San Francisco
We're a video AI company dedicated to democratizing social media content creation to everyone
Serval
San Francisco
Serval is an AI platform for IT teams that replaces legacy systems with automation, freeing people to focus on meaningful work. It is trusted by Perplexity, Together AI, Writer, Mercor, and Verkada to automate over half of their IT tickets.
DepthFirst
San Francisco
depthfirst is an applied AI lab dedicated to securing the world's software, focusing on AI-native security as software underpins modern civilization and exploits are expected to rise with AI proliferation.
Reducto
San Francisco
Reducto offers an API-style platform that converts complex documents into inputs for large language models, serving hundreds of customers from startups to Fortune 10 and processing tens of millions of pages monthly from its San Francisco he
Bland
San Francisco
The company provides AI-powered phone call capabilities for enterprise customers, positioning itself as an enterprise-first provider and aiming to lead AI-driven telephony for large organizations.
Campfire
San Francisco
Campfire is an AI-native ERP for mid-size and enterprise companies to close fast and scale faster. Based in San Francisco, it is backed by Accel, Foundation Capital, Y Combinator and Capital49(Airwallex), serving 50 to 5,000-employee firms
Listen Labs
San Francisco
Listen is an autonomous market researcher that uses AI to design interviews, recruit participants, and analyze responses, delivering insights in hours rather than weeks, 24/7. Trusted by Google, Microsoft, SKIMS, Nestlé, and hundreds of ent
Bretton AI
San Francisco
Bretton AI (formerly Greenlite AI) builds AI agents for financial crime compliance, helping banks and fintechs automate AML and KYC work.
CodeRabbit
San Francisco
CodeRabbit is an innovative, AI-driven platform that transforms the way code reviews are done. It delivers context-aware, human-like reviews, improving code quality, reducing the time and effort required for thorough manual code reviews, and enabling teams to ship software faster. Trusted by over a thousand organizations, including The Economist, Life360, ConsumerAffairs, Hasura, and many more, to improve their code review workflow. CodeRabbit is SOC 2 Type 2, GDPR certified, and doesn't train on customer's proprietary code.
David AI
San Francisco
David AI builds audio datasets through R&D; founded in 2024 by former Scale AI engineers, it counts FAANGs and AI labs among customers and raised a $50M Series B from Meritech, NVIDIA and others, achieving seven-figure revenue in six months
Edison Scientific
San Francisco
Edison Scientific, spun out from FutureHouse in 2025, accelerates scientific discovery by building and commercializing AI agents for science, pursuing an AI Scientist to scale autonomous research and tackle challenges such as drug developme
Runware
San Francisco
Runware delivers AI-as-a-Service at 5–10x lower cost and with higher speed than competitors. Built for scale, the service has already powered 4 billion+ creations for +100K developers and +250M end-users worldwide. Founded in 2023 and headquartered in San Francisco, Runware is backed by Insight Partners and a16z.
Stand Insurance
San Francisco
The company protects and insures homes against wildfire and hurricane risks by applying physics and AI to model true property risk, enabling more homes to be insurable.
Salient
San Francisco
Salient is an AI-driven workflow automation platform for lenders, starting with auto loan servicing. Since launching in 2023, it has surpassed $10M ARR, achieved cash-flow positivity, partnered with major U.S. lenders, and identified 35k+ C
Giga
San Francisco
Giga provides enterprise customer support by deploying AI agents, handling over 1 million tickets monthly, and counting industry leaders like Postman and Zepto among its clients, with rapid scaling backed by investors including Garry Tan and Nexus Venture Partners.
Zip
San Francisco
Zip, founded in 2020, pioneered procurement orchestration and leads $50B+ TAM, serving enterprises such as Instacart, Sephora, Reddit, Lyft, and brands like Airbnb, Facebook, Google. Valued at $2.2B with $370M in funding from Y Combinator,
Ambience Healthcare
San Francisco
Ambience Healthcare is a San Francisco-based AI platform for documentation, coding, and clinical workflows that reduces administrative burden and protects revenue at the point of care. Founded 2020 by Mike Ng and Nikhil Buduma; backed by Oa
Habitat Health
San Francisco
Habitat Health was founded in 2023 to deliver fully integrated health and social care to older adults on Medicare or Medicaid who wish to remain living independently in their homes and communities. Habitat Health provides care through the Program of All-Inclusive Care for the Elderly ("PACE") in collaboration with local community partners. The company is supported by Kaiser Permanente, Town Hall Ventures, and New Enterprise Associates.
Rox Data
San Francisco
Rox helps businesses secure and grow revenue.
Lindy
San Francisco
Lindy is an AI assistant that manages tasks and acts as an executive assistant for busy professionals. Its agents integrate with tools and use personalized context to automate tasks, aiming to automate knowledge work by enabling workflow au
Artisan
San Francisco
Artisan builds AI employees called Artisans and aims to replace the SaaS stack with a single integrated platform, starting with outbound sales; it consolidates every sales SaaS into one platform, framing it as next Industrial Revolution and
Harper
San Francisco
Harper is a commercial E&S insurance brokerage with an AI-native platform and proprietary AI stack that handles prospecting through binding and service. Founded in August 2024, it has grown ARR from $400k to near $5M, aiming for $10M by Q1.
Nirvana Insurance
San Francisco
Nirvana is on a mission to harness the power of data to revolutionize commercial insurance and enable a safer world. We are bringing much-needed innovation into the legacy, trillion-dollar commercial insurance industry. We have developed cutting-edge predictive models that use real-time IoT data from billions of connected devices, allowing us to better understand and price risk. Our AI-driven platform fundamentally changes the way an insurance company operates with personalized risk scoring, faster underwriting, modernized claims, and proactive, data-driven insights to help customers prevent accidents. We’ve already proven the scale—reaching well over $100 million in premiums and more than doubling year over year. Our data moat is growing exponentially with more than 20 billion miles of telematics data, leading to more predictive models and new insights into how we can better understand and reduce risk. Altogether, our loss ratio, efficiency, and customer experience are redefining what can be done in the industry. With $170+ million raised, including an industry-leading Series C round in January 2025, we’re only accelerating our growth, with strong support from top-tier VCs including Lightspeed, General Catalyst, and Valor. Nirvana’s leadership team has previously helped scale multi-billion-dollar companies from scratch, including Samsara, Rubrik, and Flexport, and includes industry veterans from Hiscox, The Hartford, and RLI.
Guild.ai
San Francisco
Introducing Guild.ai. Our mission is simple: make building with AI as open and collaborative as open source. We’re creating tools for the next generation of intelligent systems, designed for builders who see craft, reliability, scale, and community as essential. By making AI development open, transparent, and collaborative, we’re enabling builders to move faster, ship with confidence, and learn from one another as they shape what comes next.
Noon
San Francisco
Noon (formerly Weaver) is an AI-native product design tool that links design and code so product teams can go from idea to shipped interface.
Netic
San Francisco
We help essential service industries grow on autopilot. Essential services power the real economy. Every one of us interacts with these industries repeatedly throughout our lives. But these large businesses face real-world constraints—human labor, external volatility, compliance, logistics, and physical infrastructure. Their operations are complex and often rely on outdated systems and manual workflows, and they can’t access the frontier technologies that drive digital-first businesses. In a world where startups mostly build for startups, we serve the large enterprises in real industries and end users that keep America running. We're a small team of relentless builders, ex-founders, and immigrants from top CS schools and tech companies who thrive on solving hard problems and making a tangible impact. We are backed by the best investors and founders of our generation.
Superpower
San Francisco
Superpower runs a membership-based health program centered on biomarker insights, with transparent pricing and no hidden fees. It offers 24/7 support and resources, plus HSA/FSA-eligible plans, delivering flexible, proactive health manageme
Lotus Health AI
San Francisco
Your AI doctor, powered by real doctors & leading medical evidence. Get free primary care and unprecedented health insights.
Imbue
San Francisco
This company aims to rekindle the dream of personal computing by making reliable software creation accessible to all, empowering humans in an AI era with powerful computing tools and researching verification of LLM-generated code to ensure
Counsel Health
San Francisco
Counsel is building an AI-driven healthcare practice to scale care delivery and provide rapid, personalized medical advice, leveraging partnerships with leading healthcare organizations and collaborative clinician–AI models; founded 2023, r
Parafin
San Francisco
Parafin provides fintech infrastructure for marketplaces, vertical SaaS, and payment platforms, using real-time performance data to tailor financial services for platforms serving small-business sellers. Its platform-focused, data-driven ap
Delve
San Francisco
Delve is an AI-native compliance company helping 700+ fast-growing firms achieve SOC 2, HIPAA, ISO, GDPR, and other standards in days, not months; trusted by Lovable, Bland, and Wispr Flow, and building an AI-native platform to automate com
E2B
San Francisco
E2B is a Series A startup building the next hyperscaler for AI agents. It has seven figure revenue and has raised over $32M from investors including Insight Partners, serving Perplexity, Hugging Face, Manus, and Groq in San Francisco and Pr
Casca
San Francisco
Casca is building AGI for banking, replacing legacy systems with AI-native tech that automates 90% of manual work. It emphasizes responsible AI with human-in-the-loop monitoring and is backed by Y Combinator, Peterson Ventures, The Sarah Sm
Alembic
San Francisco
Alembic provides causation analytics on proprietary data at scale, answering questions generic AI cannot. It serves Fortune 500 clients including Nvidia, Delta Air Lines, Mars; it operates one of the world's fastest private supercomputers a
General Medicine
San Francisco
General Medicine is a healthcare store focused on transforming outpatient care access by providing fast, price-transparent guidance on the next best clinical steps for all patients, regardless of insurance, aiming to speed care and empower
Wordware
San Francisco
Wordware offers a web-hosted IDE that lets non-technical domain experts collaborate with AI engineers to build task-specific AI agents, treating prompting as a programming language for natural language programming and agent orchestration.
Slash Financial
San Francisco
Slash is a fintech company building industry-specific business banking, backed by YC, NEA, Stanford University, and others; it powers over three billion dollars a year in business purchasing and is among the fastest growing fintechs.
Slash
San Francisco
Slash is a fintech company building industry-specific business banking, backed by YC, NEA, Stanford University, and others; it powers over three billion dollars a year in business purchasing and is among the fastest growing fintechs.
LangChain
San Francisco
LangChain provides the agent engineering platform and open source frameworks developers need to ship reliable agents fast. LangSmith offers observability, evaluation, and deployment for rapid iteration. Our open source frameworks, LangGraph, LangChain, and Deep Agents, help developers build agents with speed and granular control. LangSmith is trusted by leading AI teams at Zip, Vanta, Klarna, Workday, Linkedin, Cloudflare, and more.
AfterQuery
San Francisco
AfterQuery builds datasets and experimentation to advance frontier LLM and AI-agent workflows, constructing complex data-infrastructure for agentic and hard-reasoning tasks. It partners with five AI labs and is YC's infrastructure partner, led by teams from top banks and quant firms.
Further
San Francisco
FurtherAI is a domain-specific AI company for the insurance industry, helping insurers, reinsurers, MGAs, and brokers drive better decisions at scale. Backed by a16z, Y Combinator, Nexus, and Converge, it supports customers writing over $15
Judgment Labs
San Francisco
Judgment Labs provides infrastructure for Agent Behavior Monitoring (ABM) to observe post-deployment autonomous-agent behavior at scale, serving hundreds of teams. It has raised over $30 million from notable investors and positioned as a le
FurtherAI
San Francisco
FurtherAI is a domain-specific AI company for the insurance industry, helping insurers, reinsurers, MGAs, and brokers drive better decisions at scale. Backed by a16z, Y Combinator, Nexus, and Converge, it supports customers writing over $15
Unify
San Francisco
Unify is an AI-first go-to-market platform that treats growth as a science, powering pipeline for leading teams such as Airwallex, Cursor, Perplexity, Together AI, and Guru. Founded Jan 17, 2023 by Austin Hughes and Connor Heggie, with a Li
Collective
San Francisco
Collective is the first all-in-one financial platform designed to give self-employed entrepreneurs the technology and team they need so they can focus on their passion, not their paperwork. Collective handles LLC and S Corp formation, payroll, taxes, monthly bookkeeping, compliance and more all in one place, exclusively for solopreneurs.
Linea Energy
San Francisco
Linea Energy is a newly-formed Independent Power Producer aiming to change the status quo of how clean energy is developed and financed to rapidly increase the speed of deployment. Linea has hit the ground running with an experienced and driven team. We're scaling quickly to become a transformational leader in the development and ownership of clean energy infrastructure. By leveraging best-in-class development capabilities and active risk management, we aim to consistently create better results for partners and communities. Backed by EnCap’s Energy Transition team, Linea Energy has the strategic and capital backing to build, own, operate and trade products from our portfolio of renewable and energy storage assets.
Moonlake
San Francisco
The company builds multimodal reasoning models, developing AI systems that can reason across multiple modalities and integrate diverse data types. This focus positions it in a technically advanced area of AI development.
Fulcrum Tech
San Francisco
The company develops an AI platform that automates administrative tasks for insurance brokerages, with strong penetration in enterprise brokerages. It recently raised a Series A and aims to expand in the $1.5 trillion insurance market.
Indent
San Francisco
Indent is a platform for large engineering teams, used for incident response, code review, and data analysis with minimal setup. It provides a cloud AI software engineer that handles the entire job, including real-world tasks like analyzing
Mem0
San Francisco
Mem0 provides a universal, self-improving memory layer for LLM applications, enabling personalised AI experiences while reducing costs and boosting user delight. It markets itself as "The memory layer for Personalized AI."
Juicebox
San Francisco
Juicebox is an AI-powered recruitment company founded by Ishan Gupta and David Paffenholz, aiming to disrupt recruiting with AI that can reason and take actions. It serves 2,500+ clients, seven-figure revenue, is cashflow positive, and has
TwelveLabs
San Francisco
The world's most powerful video intelligence platform for enterprises.
Waymark
San Francisco
Waymark is a public benefit company dedicated to improving access and quality of care for people receiving Medicaid. We partner with health plans and primary care providers to create more equitable and accessible pathways to better health. Our local teams of community health workers, pharmacists, therapists and care coordinators use proprietary data science technologies to deliver evidence-based interventions to hard-to-reach patient populations. We are hiring. We are partnering. We are building with our communities. Join us.
Vultron
San Francisco
Vultron helps federal contractors win contracts by delivering compliant proposal drafts and compressing weeks of work into days. It is trusted by 400+ federal contractors and has enabled $2.2B in contract wins, using proprietary models trai
Sauron
San Francisco
Sauron provides residential security via autonomous robots and cars, led by alumni of Zipline, Tesla, Apple, and Google. Incubated by Kevin Hartz and Atomic, it has raised rounds totaling at least $40M from investors including A*, 8VC, and
Butter
San Francisco
Butter is building modular, template-free tools for video editing and motion design, making video creation fast and playful. It empowers creativity without templates or single-use AI outputs, offering a flexible, modern solution for creator
Apella
San Francisco
Apella is a technology company for better surgery. We use artificial intelligence, computer vision, and modern communications to improve the most critical aspect of healthcare.
Encord
San Francisco
Encord offers a multimodal data labeling, curation and evaluation platform for AI, built by quants, physicists and computer scientists; backed by CRV and YC, it is SOC 2, HIPAA and GDPR compliant and serves customers including Synthesia and
Watney
San Francisco
Watney is building a robot workforce to automate dexterous tasks in datacenters for hyperscalers and neoclouds, aiming to become a supplier of all manual labor; it closed a $21M seed round from Conviction, A*, and Abstract.
Gigs
San Francisco
Gigs is building the operating system for mobile services, enabling tech companies to embed connectivity and automate phone-plan provisioning for fintechs and HRIS platforms. Backed by nearly $100 million from Ribbit Capital, Google, and Y
Koah
San Francisco
Koah Labs is building an ad network to power AI-native products, focusing on monetization methods that capture value from free users without detracting from the user experience.
DayDream
San Francisco
Daydream is a SaaS platform that automates the entire programmatic SEO workflow, aiming to streamline programmatic SEO engines. Despite being pre-launch, it has reported rapid ARR growth month over month and plans a GA product, with LLMs in
Alex (formerly Apriora)
San Francisco
Alex AI builds the future of hiring with an autonomous recruiter that conducts real-time video interviews, asking employer-selected or job-based questions and personalized follow-ups to speed hires and improve signals; it supports thousands
Automat
San Francisco
Automat is a generative AI platform that creates and scales end-to-end automations, redefining Enterprise AI Agents, RPA, and Intelligent Document Processing; it serves some of the world's largest companies and claims 10x speed and lower co
Momentic
San Francisco
**The AI-native automated testing platform** Momentic is the modern alternative to Selenium, Cypress, and Playwright. We help software companies ship faster with reliable end-to-end tests that write themselves. World-class engineering team
NationGraph
San Francisco
NationGraph aims to make public sector sales transparent and efficient by consolidating purchasing data into a single source of truth for procurement; it is backed by venture capital and angels, including XYZ Venture Capital, Reach Capital,
Archil
San Francisco
Archil connects AI applications to data resources, including model training, agents, and sandboxes, enabling data access for AI development and experimentation. It positions itself as the connector between AI tools and the data they require
Browser Use
San Francisco
The company specializes in animating web agents, bringing them to life as living entities on the web.
Toma
San Francisco
Toma provides an AI and software suite for automotive dealers, backed by top investors including Andreessen Horowitz and Y Combinator, and partnered with Lithia Motors and Cox Automotive; it has 100+ U.S. dealers and seven-figure ARR within
FleetWorks
San Francisco
FleetWorks builds voice agents to modernize freight booking, creating a more efficient marketplace for brokers and forwarders. With Series A funding, it is led by Paul Singer and Quang Tran and based in SOMA.
Aeolus
San Francisco
harmonizing chaos
ComfyUI
San Francisco
ComfyUI is a San Francisco-based, open-source, node-based engine for generating visual AI content, billed as the world’s leading visual AI platform with a modular system and a community of millions of users, 60k GitHub stars, and thousands
Phonely
San Francisco
Phonely develops voice AI technology to improve customer support and enable doctors to see more patients, while reducing hold times. It positions itself as a leader in intelligent, scalable customer communication and aims to redefine how bu
Ubicloud
San Francisco
Open source alternative to AWS
Artie
San Francisco
Artie enables real-time data streaming and database replication between databases and data warehouses, launched about a year ago and now processing over 10 billion rows per month, backed by Pathlight and General Catalyst.
Eigen
San Francisco
Eigen is building a consumer social company focused on peer-like connections rather than an assistant, aiming to redefine social experience with intuitive product design and human-centered interactions.
Artificial Intelligence Underwriting Company (AIUC)
San Francisco
The company underwrites superintelligence and evaluates, certifies, and insures agents, focusing on assessing and supporting agents within the realm of advanced intelligence.
Hark
San Francisco
Hark builds an end-to-end AI automation system—from workflow ingestion to production monitoring—plus services that accelerate deployment 10x; founded by Obaid Khan and Tim Lee, bringing operator credibility from Motive, Miso Media, and Code
Yutori
San Francisco
A startup building AI agents that reliably perform everyday web tasks, pursuing an agent-first stack from model training to generative interfaces; emerged from stealth in March and raised a $15M seed led by Radical Ventures, with Fei-Fei Li
Quanta
San Francisco
Quanta is the accounting service for software businesses who want to get their finances right, without delay. We’re the only service that can provide critical business metrics up to date daily, and will close your books as fast as the data
Simple AI
San Francisco
Simple AI builds enterprise-grade voice AI agents to automate customer conversations at scale, handling millions of calls for brands like Doordash, xAI, and Omaha Steaks. Backed by Y Combinator and notable investors, the lean startup aims t
Unto Labs
San Francisco
Unto Labs builds scalable distributed systems at the physical limits, applying high-performance computing principles to achieve unprecedented scale in global, decentralized networks. Its team hails from industry-leading blockchain firms.
Tamarind Bio
San Francisco
Tamarind provides access to AI-powered drug discovery for scientists, used by thousands from pharma, biotech, and academia, serving a broad, cross-industry research community.