Andreessen Horowitz

Funds high-growth technology teams through Andreessen Horowitz venture partnerships with equity backing and operating support across sectors.

Andreessen Horowitz, or a16z, is a U.S. venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. It manages more than $100 billion across multiple funds, and its platform model pairs investors with operators in marketing, talent, legal, and policy.

The firm backs seed-to-growth-stage technology companies across AI, bio and healthcare, consumer, crypto, enterprise, fintech, games, infrastructure, and American Dynamism. Its core instrument is equity through pooled investment vehicles, not grants, although the record also captures the a16z Open Source AI Grant program launched in 2023 as grant funding rather than an investment or SAFE note. The listed American Dynamism route carries a $100 million maximum award value.

That mix makes a16z relevant for founders seeking venture capital, especially where the company sits in one of its stated sectors and can benefit from the firm's operating support. The open source grant program appears to have been a narrow, time-bound exception, while the main relationship remains an equity investment process.