a16z Raises $1.1B for the Machine Age Fund, Targeting AI's Physical Infrastructure

Andreessen Horowitz disclosed on August 28, 2026 that it has raised $1.1 billion for a new Machine Age Fund, investing across chips, memory, networking, and storage as well as data centers, robotics, and home AI appliances.

a16z funding AI-infrastructure semiconductors robotics

Andreessen Horowitz (a16z) disclosed on August 28, 2026 that it has raised $1.1 billion for a new fund, the Machine Age Fund¹.

The fund will invest across the computer infrastructure AI runs on — chips, memory, networking, and storage — as well as full systems for running AI, from data centers to robotics to home AI appliances¹
The post is credited jointly to Ben Horowitz and four colleagues, framing it as time to accelerate the physical buildout of AI¹
The page gives no investment period, limited partners, or per-company check size¹

a16z argues that what these layers have in common is that they are all hitting the wall of today’s supply chain capability and the limits of physics and computer science, citing as examples of the shift that compute density per rack has increased 28x from an H100 rack to a Rubin rack, and that rack power has moved from roughly 5-10 kW to 100-250 kW and will reach 1MW over the next three years — all the firm’s own characterizations¹. On the funding-flow side, GPU cloud provider Lambda announced the closing of a $926 million term loan B the day before.

Sources

The Machine Age Fund - Andreessen Horowitz official announcement (August 28, 2026)