Andreessen Horowitz (a16z)

Developer infrastructure that turns unstructured inputs into typed decisions and probability scores for automated software workflows.

Arena evaluates AI models through comparisons and observations of how people use them in real tasks.

A mortgage loan-origination system with AI agents that work on applications, underwriting and closing documents.

Reinforcement-learning environments that help AI labs train models to solve tasks without exploiting flaws in the grading system.

AI software for finance teams that follows up on invoices, resolves payment disputes and matches incoming payments to receivables.

An online healthcare store where people compare care options and upfront prices, book visits and order medications or lab tests.

Mortgage-servicing software that combines loan records, accounting, operational workflows and AI agents in one platform.

Devoted Health brings Medicare Advantage coverage together with medical care, virtual visits, in-home services and Member Service Guides for older adults.

Armadin develops AI agents that test attack paths across enterprise systems and show defenders how connected weaknesses could be exploited.

doxx.net provides private networking for people and AI agents, including direct file transfers, calls and messaging.

Jeeves provides a financial platform for global businesses, combining corporate cards, cross-border payments, expense controls and treasury tools.

Agentic AI software for housing operators and healthcare providers that automates customer conversations and operational workflows.

AI agents coordinate procurement and permitting work for large energy and data-center projects.

An AI and synthetic-biology platform that designs and engineers antibody therapeutics.

Vals AI evaluates AI models on multi-step, economically valuable work across fields such as legal analysis, financial modeling and software engineering. Its private task-specific benchmarks, expert review and developer integrations help companies measure real-world capability and production risks.

An AI project-accounting platform that helps construction companies keep job costs, billing, payables and forecasts current using field and financial data.

A health-benefits platform that lets employers set healthcare budgets while employees choose insurance and eligible care to fit their needs.

Ferry is an AI healthcare-navigation assistant that helps patients find suitable in-network providers and schedule care. It handles the back-and-forth by checking specialty and location fit, contacting provider offices by phone and completing appointment booking by text; it reaches patients through partnerships with health systems and insurers.

Temporal provides an open-source durable execution platform for long-running applications and AI agents.

Cognition develops Devin, an autonomous software-engineering system, and the Windsurf AI code editor.

A wholesale marketplace helping brands sell surplus inventory to business buyers.

A go-to-market platform that combines customer and prospect data with AI research and automation tools for revenue teams.

Lightfield is an AI-native CRM that builds a shared, continuously updated record of a company's customers for employees and agents.

The Boring Company builds tunnel-boring machines and underground Loop passenger systems for cities and transport partners.

Provides a cloud inference platform and compiler that distribute AI workloads across different processor types.

An AI fundraising workspace that helps founders identify investors, research firms and manage venture rounds.

Town is a personal AI assistant that works across email, calendars, documents and messaging to handle tasks in a user’s connected tools.

A remittance service that lets Latino migrants in the United States send money to family in Latin America through a WhatsApp conversation.

Mara develops Spike, an autonomous counter-drone system designed to detect, track and stop hostile FPV drones.

Builds low-cost, mass-producible hypersonic strike missiles for defense