TypeSafe AI
Developer infrastructure that turns unstructured inputs into typed decisions and probability scores for automated software workflows.
$870MSeries A
LeadAH
Andreessen Horowitz (a16z)
Activity from announced rounds
Activity in this selectionOct 17, 2026 · Sep 18, 2026
Andreessen Horowitz invests in technology companies from seed through growth, with specialist teams in AI, enterprise software, infrastructure, fintech, crypto, healthcare and consumer technology.
The firm pairs investors with an operating platform spanning recruiting, marketing, legal matters and public policy. This structure gives a founder access to specialists for building a management team, reaching customers and navigating regulated markets alongside the investment relationship.
Its American Dynamism practice extends the mandate into areas such as defence and industrial technology. Founders should identify the relevant investing practice: a16z operates across several markets with different technical and commercial requirements.
Sources
- Rounds participated in
- 15
- Confirmed lead rounds
- 8 All roles disclosed
- New companies
- 14 First participation on record · 1 follow-on
- Funding in participating rounds
- $2.9B 15 disclosed · full round size, not this investor’s share
By stage
1 more
Undisclosed1
By primary sector
2 more
Cybersecurity1
Developer tools1
By country
Rounds
15 in this selectionArena
Arena evaluates AI models through comparisons and observations of how people use them in real tasks.
$200MSeries B
ParticipantVesta
A mortgage loan-origination system with AI agents that work on applications, underwriting and closing documents.
$30MSeries B
ParticipantPreference Model
Reinforcement-learning environments that help AI labs train models to solve tasks without exploiting flaws in the grading system.
$16MSeed
LeadStuut
AI software for finance teams that follows up on invoices, resolves payment disputes and matches incoming payments to receivables.
$52.5MSeries B
ParticipantGeneral Medicine
An online healthcare store where people compare care options and upfront prices, book visits and order medications or lab tests.
$120MSeries B
LeadValon
Mortgage-servicing software that combines loan records, accounting, operational workflows and AI agents in one platform.
$150MSeries D
ParticipantDevoted Health
Devoted Health brings Medicare Advantage coverage together with medical care, virtual visits, in-home services and Member Service Guides for older adults.
$555MSeries G
ParticipantArmadin
Armadin develops AI agents that test attack paths across enterprise systems and show defenders how connected weaknesses could be exploited.
$255.5MSeries B
Leaddoxx.net
doxx.net provides private networking for people and AI agents, including direct file transfers, calls and messaging.
$38MSeries A
LeadJeeves
Jeeves provides a financial platform for global businesses, combining corporate cards, cross-border payments, expense controls and treasury tools.
$110MSeries C-1
ParticipantEliseAI
Agentic AI software for housing operators and healthcare providers that automates customer conversations and operational workflows.
$350MGrowth financing
LeadVela Energy
AI agents coordinate procurement and permitting work for large energy and data-center projects.
$1.3MPre-Seed
LeadBigHat Biosciences
An AI and synthetic-biology platform that designs and engineers antibody therapeutics.
$75MSeries C
ParticipantVals AI
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.
$40MSeries A
Lead