Andreessen Horowitz

Investment Thesis

Andreessen Horowitz believes AI represents the most significant technology shift since the internet. Their thesis is explicitly multi-layer: they invest in frontier model companies (Mistral), infrastructure (Together AI, Replicate), and application-layer startups (Cursor, ElevenLabs). Marc Andreessen’s “AI will save the world” essay codified the firm’s aggressive pro-AI stance.

The firm runs a dedicated AI team led by Anjney Midha and Martin Casado, with separate AI-focused funds within their broader vehicle.

Notable AI Deals

a16z led Mistral’s Series B at a $2B valuation, making them the biggest Western backer of Europe’s leading AI lab. They also anchored Character.AI’s first institutional round, led Cursor’s breakout Series B, and have positions across dozens of AI-native companies. Their bio fund has also deployed heavily into AI-for-drug-discovery companies.

Portfolio Strategy

The firm takes a conviction-driven approach, writing large checks and actively supporting portfolio companies through their extensive operating team. Their “big ideas” framework explicitly targets AI companies that can reach $10B+ outcomes. They are comfortable investing in competitive spaces when they believe in the team.

Track Record

a16z’s AI bets have generated multiple breakout successes. Cursor went from $0 to $100M ARR in under two years. Mistral became Europe’s most valuable AI startup. Their portfolio companies collectively represent over $50B in combined valuation, cementing a16z as the most active institutional AI investor by deployment volume.