Interview

Fei-Fei Li on World Labs' Marble: the first public 3D world generation model and the spatial intelligence frontier

Nov 12, 2025 with Fei-Fei Li

Key Points

  • World Labs releases Marble, claiming the first publicly available 3D world generation model that lets users interact with and edit interactive environments in real time.
  • World Labs has raised over $240 million but co-founder Fei-Fei Li describes the company as capital constrained, signaling further fundraising ahead.
  • Li frames Marble as an early commercial anchor rather than a mature product, positioning World Labs as still in early stages of building spatial intelligence infrastructure.
Fei-Fei Li on World Labs' Marble: the first public 3D world generation model and the spatial intelligence frontier

Summary

Fei-Fei Li's World Labs has released what it claims is the world's first publicly available 3D world generation model, branded Marble. The model goes beyond static generation, allowing users to interact with, create, and edit 3D environments in real time, positioning it as a foundational tool for spatial intelligence applications.

World Labs has raised more than $240 million in publicly disclosed funding. Li describes the company as still capital constrained, signaling further fundraising is likely. Her framing of being 'just getting started' suggests the Marble release is an early commercial anchor rather than a mature product.