Andreessen Horowitz raises $15 billion across five funds for tech startups in its largest fundraise ever to fuel AI boom

Andreessen Horowitz just pulled off the biggest fundraise in its history, locking in more than $15 billion across five new venture funds, Reuters reported. The move comes as investor interest in tech startups hits a new high, driven by the explosive adoption of artificial intelligence across nearly every industry.

The Silicon Valley heavyweight, widely known as a16z, said the fresh capital includes $6.75 billion earmarked for scaling late-stage startups, $1.7 billion for an AI infrastructure fund, and $1.12 billion focused on national priorities such as defense, housing, and supply chains. The firm shared the details in a blog post on Friday, framing the raise as a direct response to growing global competition in tech.

Andreessen Horowitz Raises $15B, Claims Nearly 20% of All U.S. VC in 2025

This single fundraising effort accounted for more than 18% of all U.S. venture capital deployed in 2025, according to the firm. That figure alone shows how aggressively capital is concentrating around top-tier funds as AI reshapes markets and redraws competitive lines.

Ben Horowitz, a16z’s co-founder and general partner, didn’t mince words about what’s at stake.

“The technology landscape that we will be investing into is… intensely competitive with China,” he said. “At this moment of profound technological opportunity, it is fundamentally important for humanity that America wins.”

The raise builds on earlier reports about the firm’s ambitions. Reuters revealed last April that a16z was seeking roughly $20 billion for a growth-stage AI megafund. In October, the Financial Times reported the firm was targeting $10 billion for a new wave of tech investments. This latest haul shows those plans weren’t just talk.

Andreessen Horowitz has long been a kingmaker in Silicon Valley, backing companies that went on to define entire categories, including Facebook, Instagram, Coinbase, and Lyft. Its influence stretches across crypto, enterprise software, consumer apps, and now deep into AI infrastructure.

The firm’s last major fundraising round in April 2024 brought in $7.2 billion across five funds. Today, it manages more than $90 billion in assets, placing it among the most powerful venture capital firms globally, according to Reuters.

The timing isn’t accidental. As the U.S. races to hold its edge in artificial intelligence, capital is flooding into data centers, model training platforms, defense tech, and next-generation software. a16z is positioning itself at the center of that shift, betting that the next wave of tech giants will be built on AI-first foundations.

For founders, the message is clear. The checks are getting bigger. The competition is getting tougher. And the firms shaping tomorrow’s tech stack are raising war chests to match the scale of their ambition.