Andreessen Horowitz Raises $1.1 Billion for Physical AI Infrastructure

Andreessen Horowitz, one of Silicon Valley's most influential venture capital firms, announced a new $1.1 billion fund on August 28, 2026. The Machine Age Fund will finance companies building the physical infrastructure that powers artificial intelligence, from chips to robots.

What the fund covers

The Machine Age Fund plans to invest across the entire hardware stack needed to run AI systems. That includes chips, memory, networking and data storage, but also complete systems: data centers, robotics platforms and AI devices built for home use. It's a scope that goes well beyond a16z's traditional portfolio, which since its founding in 2009 has focused mainly on software and internet business models.

We've raised $1.1 billion for a16z's newest fund: the Machine Age Fund. Time to open the throttle and accelerate the physical buildout of AI. - Ben Horowitz, Martin Casado, Raghu Raghuram, David Ulevitch, partners at Andreessen Horowitz

Why now

The fund's rationale rests on the claim that AI hardware infrastructure is literally failing to keep up with demand. The firm's partners note that as models move from chat to reasoning to writing code autonomously, both the volume of work being performed and the number of tokens needed to do it are growing by orders of magnitude.

The specific figures a16z cites in support of this thesis are striking. Compute density in a single server rack has grown 28-fold in the transition from the H100 generation to the Rubin generation. Power demand for a single rack has jumped from 5-10 kilowatts to 100-250 kilowatts, and the firm projects it could reach as much as 1 megawatt within three years. Data centers themselves are scaling from tens of megawatts to gigawatt-scale campuses.

A pivot toward hardware

a16z describes the new fund as formally making hardware investing an official focus of the firm, rather than an occasional addition to its portfolio. According to the figures cited, hardware startups already account for more than 20 percent of the firm's total deal flow, up from a marginal share just a few years ago. The fund is set to draw on the experience of a team whose members previously held leadership roles in Intel's data center division and spent decades building infrastructure systems and making earlier investments in silicon and networking.

a16z's move fits into a broader trend in the venture capital market, where capital is increasingly flowing not to app and model builders, but to companies building the physical foundations underneath those models: chipmakers, memory suppliers, data center operators, and energy companies serving the growing demand for electricity.

Why it matters

For readers in Poland tracking the AI market, this is a signal that pressure on hardware infrastructure, which has been driving up prices for DRAM memory, copper and energy for months, isn't easing. If anything, the industry's leading investors are betting the problem will deepen for years to come. Venture capital firms rarely commit capital at this scale without conviction that demand for infrastructure will hold up over the long term.

The Machine Age Fund has not yet disclosed specific portfolio companies or a timeline for its first investments. a16z has only said the fund will begin actively backing companies building everything from chips to home robots, calling it a key growth area for the firm in the years ahead.