Worldbuild

Worldbuild is a thesis-driven venture capital firm based in New York that partners with creative technologists at pre-seed and seed. Its debut fund, Worldbuild I, closed at $30 million in May 2026, with a top 20 university endowment and multi-stage VC firms among its LPs. It backs founders in two categories: Model Economy Infrastructure, spanning the compute, data, energy, and security that AI models need to improve, and Post-Skeuomorphic Applications, workflows that become possible only because of AI. Investments include SF Compute, Browserbase, Truffle, Aetherflux, Interfere, Cowboy Space Corp, Fractal Power, Spinor, Flower Computer, Armory Medical, Actual Computer, and Athanor. Worldbuild is led by a solo general partner and former a16z partner who turns published theses on tech trends into early investments, backing technical founders before products reach market.