San Francisco — Cosign

Companies headquartered here

11xDigital workers for every motion of your go-to-market engine.Headquarters

AffirmPay over time with no late fees or hidden surprises.Headquarters

AirbyteConnect business data to analytics and AI agents while keeping control of where it lives.Headquarters

AKAControlled account access for humans and AI agents, without sharing passwords.Headquarters

Ambience HealthcareChart-aware AI for clinical documentation, coding, and care workflows.Headquarters

AnyRoadTurn every event into first-party data and lasting fans.Headquarters

ArcVoice AI that turns every drive-thru into a growth channel.Headquarters

AstranisDedicated satellite networks for the world's toughest connections.Headquarters

AutomatticMaking the web a better placeHeadquarters

BasetenTrain and serve AI models on one stack, with engineers who help you reach production.Headquarters

BenchlingThe AI-ready scientific record for experiments, data, and discovery.Headquarters

BounceDrop your bags, explore the world without the baggage.Headquarters

Braveheart BioDeveloping cardiac myosin inhibitors to improve heart function and simplify care for hypertrophic cardiomyopathy.Headquarters

CantosEarly capital for technical founders building abundance and industrial resilience.Headquarters

CensusYour warehouse data, finally put to work everywhere.Headquarters

ClerkComplete user management without building auth from scratch.Headquarters

CognitionDevin plans, writes, tests, and ships code so engineers work more like architects.Headquarters

Corgi InsuranceAI-native, full-stack insurance built for startups and modern businesses.Headquarters

D2iQEnterprise Kubernetes management before it became Nutanix Kubernetes.Headquarters

DBL PartnersVenture investing where financial returns and social and environmental progress reinforce each other.Headquarters

DialpadCalls, contact centers, and AI agents working as one.Headquarters

DoorDashLocal commerce that brings your neighborhood to your door and helps merchants grow.Headquarters

Earth AIAI-powered mineral exploration and drilling to find critical metals at lower cost.Headquarters

FactoryMake your software improve itself, with Droids that build, review, and maintain code.Headquarters

FerryAI Concierge Healthcare NavigationHeadquarters

FlexportGlobal trade, turned into AI-driven execution at scale.Headquarters

FoursquareTrusted location intelligence for how the real world moves.Headquarters

FutureHouseA nonprofit lab pairing scientists with AI to accelerate biological discovery.Headquarters

GoldenA self-constructing knowledge graph built for verified information.Headquarters

HappyRobotAI workers that run enterprise operations and learn from every task.Headquarters

HedraVisual AI models, agents, and inference built for production.Headquarters

HilbertGrowth infrastructure that turns B2C data into agentic action.Headquarters

HonorTechnology and care that help older adults age on their own terms.Headquarters

ImgurThe visual community where the internet decides what rises.Headquarters

Incredible HealthThe healthcare workforce, connected and ready for what's next.Headquarters

InfinitusHealthcare agents that know when human judgment matters most.Headquarters

KadabraAI-powered customer-support automation for repetitive workflows and reusable operational runbooks.Headquarters

KindredVerified home swapping that makes travel feel like belonging.Headquarters

KnowmiaKnowmia matched K–12 students with short video lessons suited to their learning needs and preferred teaching styles.Headquarters

LambdaAI supercomputers for training and inference, from on-demand GPUs to dedicated clusters.Headquarters

LarridinProof that enterprise AI is delivering real work, not just spend.Headquarters

LimeAffordable electric rides for a cleaner, more livable city.Headquarters

LyftRides, bikes, and scooters—built to keep cities moving.Headquarters

MatikMatik’s AI automates the creation of personalized presentations, documents, and reports directly from your data.Headquarters

MetatheoryGames and AI software for people who want more depth.Headquarters

MirendilAI systems built to accelerate AI research itself.Headquarters

NashLogistics that thinks, acts, and gets better with every delivery.Headquarters

Nova CreditNova Credit is a credit infrastructure and analytics company enabling businesses to grow responsibly through alternative credit data.Headquarters

OpenAIFrontier AI that helps a billion weekly users think, create, code, and get work done.Headquarters

OrderfulEDI infrastructure rebuilt around a canonical API and zero mapping.Headquarters

Parallel DomainReal-world capture becomes digital replicas and deterministic sensor simulations for testing autonomy.Headquarters

PaveCompensation decisions backed by real-time market intelligence.Headquarters

PerplexityLive web research and AI turning questions into cited answers and completed work.Headquarters

Pierre ComputerGit infrastructure and interface components for machine work.Headquarters

PlanetScalePlanetScale offers the world’s fastest and most scalable cloud hosting for Vitess, Neki, and Postgres.Headquarters

PrimerTeacher-led neighborhood schools that personalize K–8 learning and expand access.Headquarters

Progression FundHeadquarters

QuinceFactory-direct essentials with production driven by customer demand.Headquarters

RapidapiAn API marketplace for finding, testing, and connecting services.Headquarters

Recursive VenturesHeadquarters

ReflektiveOne place for performance, engagement, and people analytics.Headquarters

RegrelloAI workflows for supply-chain and operations teams; acquired by Salesforce in 2025.Headquarters

ReplicateRun and deploy machine learning without the infrastructure.Headquarters

RetoolTurn AI-built apps into secure business software, linked to real data and controls.Headquarters

RoxAI agent swarms and a system of record for modern revenue teams.Headquarters

SalesforceCRM, shared customer data, and Agentforce AI agents for sales, service and marketing.Headquarters

Sandbox VRFull-body VR adventures made for getting out together.Headquarters

SeedFiBuild credit and savings together, one paycheck at a time.Headquarters

SnackpassRestaurant POS and AI marketing that turn visits into regulars.Headquarters

SourcegraphCode intelligence for the hardest codebases in the world.Headquarters

SpotOnThe restaurant operating system, from POS to payments.Headquarters

Striker Venture PartnersHeadquarters

SuperhumanSuperpowers for getting the most important work done.Headquarters

SwiftypePowerful site search without the enterprise learning curve.Headquarters

TeleportData-driven discovery for the best places to live and work.Headquarters

TinyCoCharacter-driven mobile games built around the worlds fans love.Headquarters

TomaAI coworkers that never miss a dealership call or lead.Headquarters

TreelineAI-powered IT and security that stays audit-ready as you scale.Headquarters

TypeSafe AIMachine-native intelligence for software automationHeadquarters

UnpopuHeadquarters

ValsIndependent AI benchmarks built for real work, not proxy scores.Headquarters

Venture UniversityHeadquarters

Very Good SecurityTokenized payment data for safe human and agent commerce.Headquarters

Wischoff VenturesHeadquarters

WXR FundHeadquarters

Z FellowsOne-week fellowship for very early technical buildersHeadquarters

AbridgeClinical AI that turns conversation into action for care teams.Headquarters

AirbaseAirbase brought corporate cards, bill pay, and expense management into one platform before Paylocity acquired it in 2024.Headquarters

AirGarageParking, run like the real estate asset it really is.Headquarters

AlchemyThe onchain engine powering the next generation of apps.Headquarters

AmplitudeAnalytics, feedback, and experiments that help product teams improve with AI.Headquarters

ApollographqlOne federated graph for every API your application relies on.Headquarters

ArenaTransparent AI evaluation for the models that matter.Headquarters

AuthyMobile two-factor authentication with encrypted backups and multi-device sync.Headquarters

BackflipEngineer-quality CAD from a 3D scan, powered by physical reasoning.Headquarters

BeaconsOne creator business hub for links, deals, storefronts, and AI.Headquarters

BentoMLOpen-source model serving and inference infrastructure for deploying AI across clouds with control over performance and cost.Headquarters

BraintrustProduction feedback loops for AI teams building reliable systems.Headquarters

Bright MachinesSoftware, robotics, and data for manufacturing AI infrastructure.Headquarters

CardiogramWearable data and DeepHeart AI for earlier health signals.Headquarters

Center for AI SafetyAI safety research, evaluation benchmarks, and researcher support to reduce societal-scale risks.Headquarters

CodiAn AI office assistant that makes every workplace just work.Headquarters

ComposioManaged authentication, tool discovery, and execution that let AI agents work across business apps.Headquarters

Crosstown Management GroupSan Francisco single-family office managing the Heising-Simons family's multi-strategy hedge fund portfolioHeadquarters

DatabricksUnify your data, analytics, and AI on a governed lakehouse to build apps and agents.Headquarters

Dedalus LabsPersistent computers for AI agentsHeadquarters

Divvy HomesRent your next home while you save toward owning it.Headquarters

DropboxKeep team content connected, searchable, and secure.Headquarters

EcoProgrammable stablecoin routing that settles atomically across chains.Headquarters

falGenerative media infrastructure that lets developers build, train, and deploy models.Headquarters

FigmaA shared canvas where teams and AI agents turn ideas into products, from WIP to ship.Headquarters

Foresight InstituteAdvancing frontier science through funding and collaborationHeadquarters

FreedAI documentation and front-desk tools built around independent clinics and clinician happiness.Headquarters

GitbutlerVersion control that lets developers and agents work in parallel.Headquarters

GreprKeep the data, lose the telemetry noise and observability cost.Headquarters

HarveyLegal AI for high-stakes work, trusted by 2,400+ law firms and in-house legal teams.Headquarters

HeliconeOpen-source LLM observability and model routing, with tracing and prompt management; maintained following acquisition by Mintlify.Headquarters

HipcampThe best nights outside start with a place to land.Headquarters

IEQ CapitalIndependent multi-family office and wealth manager for UHNW familiesHeadquarters

ImplyReal-time analytics that makes live event data worth exploring.Headquarters

InferactOpen inference infrastructure from the people behind vLLM.Headquarters

InstacartGroceries, personalized by real-time data and local inventory.Headquarters

Kaedim3DTurn 2D ideas into production-ready 3D assets, faster.Headquarters

KinterAI accountants working directly inside your NetSuite close.Headquarters

KongOne platform to connect, govern, and secure your AI traffic.Headquarters

LangChainOpen frameworks and an engineering platform to build, improve, and own AI agents.Headquarters

LegendMobile DeFi for trading, borrowing, and earning; product sunset announced for July 12, 2026.Headquarters

LlamaIndex 🦙Turn complex documents into reliable context and workflows for AI agents.Headquarters

MastraBuild and operate TypeScript agents with an open-source framework, shared development tools, and managed deployment.Headquarters

Memora HealthIntelligent navigation for care journeys that never feel simple.Headquarters

MeterFull-stack enterprise networks across internet, wired, Wi-Fi, cellular, hardware, software, and support.Headquarters

MixpanelAlways-on product intelligence that tells teams what to do next.Headquarters

NetlifyWhere developers and agents build, ship, and scale together.Headquarters

OktaIdentity for humans, machines, and the AI agents between.Headquarters

OpenAI FoundationUsing AI and philanthropy to advance broad public benefitHeadquarters

OtterOtter matches parents who need care with trusted sitters in their community, on-demand.Headquarters

Partnership on AITools, recommendations, and collaboration for responsible AIHeadquarters

Pax VenturesEarly-stage capital for founders rebuilding defense, energy, and industrial capacity.Headquarters

Phenomenal VenturesHeadquarters

PinterestDiscover, save, and shop visual ideas that turn inspiration into plans for real life.Headquarters

PoeticEnterprise AI that learns procedures and reliably runs complex business workflows.Headquarters

PrismsvrMake math and science tangible through spatial learning.Headquarters

PromptFooOpen-source AI testing that makes red-teaming a routine.Headquarters

QuiverEditable vector graphics, generated and animated with AI.Headquarters

RasaReliable AI agents with business logic and behavior you control.Headquarters

RedditCommunities sharing knowledge, stories, and opinions at the heart of the internet.Headquarters

ReforgeSharper thinking and better product work, every day.Headquarters

RelaceModels and infrastructure built specifically for coding agents.Headquarters

ResendEmail for developers and agents that reaches real humans.Headquarters

RewatchEvery meeting, turned into work your whole team can use.Headquarters

RyeAgentic commerce infrastructure for native in-app commerce.Headquarters

SalientCompliance-first AI agents for the hardest lending workflows.Headquarters

SardineAgentic risk intelligence for fraud, AML, and real-time trust.Headquarters

SentiLinkIdentity fraud detection that keeps good customers moving.Headquarters

Social StartsHeadquarters

SpeakThe language learning app for real conversational practice without a live tutor.Headquarters

SprigEnterprise research agents that turn questions into insight.Headquarters

StripeEconomic infrastructure for internet businesses, powering $1.9T in payments in 2025.Headquarters

SupermoveThe moving industry's autonomous operating system.Headquarters

SynapseBanking infrastructure for fintech companies (2014–2024).Headquarters

ThatchFlexible health benefits that let employees choose coverage and spend on their care.Headquarters

Todd & Rahul's Angel FundHeadquarters

TownThe personal AI assistant that learns your work—and asks before acting.Headquarters

TrunkKeep CI green by eliminating flaky tests and merge gridlock.Headquarters

UlyssesAutonomous ocean systems for safer seas and resilient ecosystems.Headquarters

UsepylonAgentic support that moves every B2B customer signal forward.Headquarters

ValueAct CapitalSan Francisco activist investment firm managing $10BHeadquarters

VercelGlobal infrastructure for developers and agents to build, deploy, and run software.Headquarters

VMG PartnersHeadquarters

WonderschoolAI tools helping child-care providers grow and stay focused.Headquarters

XBuildThe AI-powered estimating platform built for contractor sales teams.Headquarters

ZendeskAI and human teams working toward better resolutions.Headquarters

AirbnbStays, experiences, and services that help people feel at home across the world.Headquarters

AirtableTurn shared business data into custom apps and AI agents, without writing any code.Headquarters

Alchemy HealthIn-house pharmacy infrastructure for the clinics patients need.Headquarters

Anchorage DigitalProven infrastructure powering modern financial markets.Headquarters

Applied ComputeTrain, serve, and continuously improve AI models you own.Headquarters

AsanaOne plan for humans and AI agents to run critical work.Headquarters

AutodeskSoftware to design and make across disciplines.Headquarters

BackstoryTurn sales activity into the answers that move deals forward.Headquarters

Bedrock RoboticsAutonomous heavy equipment for construction crews.Headquarters

BitskiWallet experiences that feel native, not like crypto infrastructure.Headquarters

Branch InternationalMobile money for the people and places traditional finance missed.Headquarters

Buckley VenturesConcentrated investments in transformative technology companies.Headquarters

CartaThe operating system for every private-capital decision.Headquarters

Center for Humane TechnologyAligning technology with human well-beingHeadquarters

Coefficient GivingResearch-driven philanthropy helping donors find and fund high-impact opportunities.Headquarters

ConvexThe reactive backend where TypeScript and agents just work.Headquarters

CursorThe coding agent for ambitious software, with agent fleets working for hours or days.Headquarters

Daylight ComputerPaper-like computers for focused reading, writing, and a calmer digital experience.Headquarters

DeelHire, pay, and manage global teams in 150+ countries, with infrastructure Deel owns.Headquarters

Dolby Family VenturesSan Francisco family office and seed-stage venture investor backing science and engineering breakthroughs, honoring Ray Dolby's legacy.Headquarters

E2BIsolated cloud computers for AI agents, with code execution, desktop control, and deployment in your own infrastructure.Headquarters

EnvoyThe workplace operating system for people, spaces, and safety.Headquarters

FeiFei Protocol built a decentralized stablecoin for DeFi before its governing DAO wound down the protocol.Headquarters

FinHuman and AI customer service in one system.Headquarters

FormationInterview prep for experienced software engineers.Headquarters

FurtherAIAI insurance workers for submissions, policies, and claims.Headquarters

GitHubHome for developers and AI agents to build, collaborate, and ship software safely.Headquarters

GreptileAI code review and runtime testing grounded in your codebase.Headquarters

HashiCorpInfrastructure and security managed as code.Headquarters

HexGoverned data exploration that people can inspect and trust.Headquarters

Hippocratic AISafety-focused clinical voice agents built to extend care.Headquarters

IFTTTThe no-code glue for 1,000+ apps, devices, and AI assistants.Headquarters

Impulse LabsBattery-powered appliances and power platforms that avoid costly electrical upgrades.Headquarters

Infinite AthleteSports data, live video, and biomechanics in one performance layer.Headquarters

Iron FishShielded digital money, with open-source tools for private payments.Headquarters

KapwingAI-powered video creation and editing platform for creative teams.Headquarters

Kits AIAI audio tools for music creators.Headquarters

KreaA real-time AI canvas where creators direct the visuals.Headquarters

LangfuseOpen-source tracing, evaluations, and prompt management for improving AI applications with control over your data.Headquarters

LightupData quality, continuously monitored at the speed of production.Headquarters

LoomVideo messages that move work forward, without more meetings.Headquarters

MaterialWorkspace security for the AI era, from email to risky apps.Headquarters

MercuryBanking, payments, cards, and accounting in one finance platform built for startups.Headquarters

MintlifyKnowledge infrastructure for humans and the agents they build.Headquarters

MuxVideo infrastructure and insights, so developers can just ship.Headquarters

NotionDocs, knowledge, and projects in an AI workspace where teams and agents collaborate.Headquarters

Omada HealthBetween-visit care that helps healthy habits actually stick.Headquarters

OpenGovGovernment software that gets every department working together.Headquarters

PagerDutyAI-first operations that move from alert to resolution.Headquarters

PatchClearer climate action, from strategy through credits.Headquarters

PaywhereProgrammable banking infrastructure for banks and credit unions.Headquarters

Physical IntelligenceRobot foundation models learning across machines to bring AI into the physical world.Headquarters

PlaidThe data network behind healthier financial lives everywhere.Headquarters

PostHogMake your product self-driving with analytics, tools, and context for coding agents.Headquarters

ProductHuntWhere makers launch and the community decides what matters next.Headquarters

Propel Venture PartnersEarly capital and direct partnership with the investors who make the decision.Headquarters

Rain AICompute-in-memory technology and IP for energy-efficient local AI.Headquarters

Recast CapitalHeadquarters

ReductoTurn the messiest documents into AI-ready data you can trust.Headquarters

Regie.aiAI agents that research prospects, prepare outreach, and keep sales follow-through moving.Headquarters

RenderDeploy and scale any app or agent from your first user to your billionth.Headquarters

ResourcelyCloud guardrails that let developers ship without getting blocked.Headquarters

Rezo TherapeuticsMapping biological networks for new medicines.Headquarters

Safe AI ForumInternational collaboration and policy work to reduce extreme AI risksHeadquarters

SamsaraPhysical operations, made safer and smarter with AI.Headquarters

SciFoundersFellowshipHeadquarters

SlackWhere work gets done, with all your people and tools.Headquarters

SocketStop malicious packages before they reach your codebase.Headquarters

SphereGlobal tax compliance that runs as a continuous workflow.Headquarters

Sprinter HealthPreventive care that meets people right where they live.Headquarters

SubstackIndependent voices, supported directly by their readers.Headquarters

SvixWebhooks that handle the hard parts, so developers don't.Headquarters

Tacit LabsApplied research at the intersection of AI and the life sciences.Headquarters

The Production BoardHeadquarters

Together AIThe AI-native cloud for inference, model training, and compute.Headquarters

TransluceInfrastructure for understanding AI behavior.Headquarters

twilioBuild connected conversations across customer channels.Headquarters

Uma VenturesPrivate investments spanning education, AI infrastructure, and frontier technology.Headquarters

ValoraA self-custody crypto wallet that feels like sending a text.Headquarters

venBio PartnersHeadquarters

Verity VentureHeadquarters

wabiCreate and remix personal AI mini-apps with your friends.Headquarters

World LabsWorld models for AI that sees, reasons, and acts in 3D.Headquarters

YosemiteHeadquarters

People from here

Sam AltmanBuilding OpenAI and the intelligence ageFrom here

Arjun SethiCo-CEO of Kraken and co-founder of Tribe CapitalFrom here

Brent LiangCo-founder and CEO of MTSFrom here

Oren ZeevGeneral Partner and technology practice leader at Apax PartnersFrom here

Connor HeggieCo-founder & CTO at UnifyFrom here

Jeff WeinerFounding Partner, Next Play Ventures | Founding LP, Westbound Equity Partners | Co-Founder, The Compassion ProjectFrom here

Sam EckholmFounder of SE Media and host of Access Granted, telling aerospace and defense storiesFrom here

Thomas VadoraCofounder & CTO of SplightFrom here

Jesse ZhangCo-founder and CEO of DecagonFrom here

Anjney MidhaFounder and CEO of AMPFrom here

Mike VernalGeneral Partner at ConvictionFrom here

Aydin SenkutFounder and Managing Partner at Felicis VenturesFrom here

Dana StalderGeneral Partner at Matrix PartnersFrom here

Max RimpelPartner at General CatalystFrom here

Samuel GibsonFounder & CEO of Hadron EnergyFrom here

Wesley ChanCo-Founder & Managing Partner at FPV VenturesFrom here

Isa FulfordPost-training researcher at OpenAIFrom here

Nikolaos BonatsosFounder and Managing Director at Verdict CapitalFrom here

Brian SingermanCo-founder of GPx and investor; Partner Emeritus at Founders FundFrom here

Giovanni VignoneFounder and CEO of OctaneFrom here

Olaf Carlson-WeeFounder and CIO at Polychain CapitalFrom here

Sven StrohbandPartner and Managing Director at Khosla VenturesFrom here