Andreessen Horowitz

Andreessen Horowitz, known as a16z, is a Silicon Valley venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. The firm manages over $42 billion across venture, growth, crypto, and infrastructure funds. a16z has become the most active VC in AI, with investments spanning foundation models (Mistral AI, xAI), enterprise AI, robotics (Figure AI), and developer tools (Replit). The firm differentiates through its massive operational team providing portfolio companies with recruiting, marketing, and go-to-market support. a16z also runs one of the most influential tech media operations through its blog and podcast network.