World Labs
World Labs is a San Francisco AI company, founded in 2024 by Fei-Fei Li, Justin Johnson, Christoph Lassner and Ben Mildenhall, that builds spatial-intelligence world models: models that generate, reconstruct and simulate interactive 3D environments from text, images and video. Its products include Marble, a multimodal world model for creating persistent, editable 3D worlds, and the World API for developers; it also builds technology for robot learning and simulation.
Founded by Fei-Fei Li (Co-Founder & CEO), Justin Johnson (Co-Founder), Ben Mildenhall (Co-Founder), Christoph Lassner (Co-Founder)
| Round | Announced | Raised | Post-money |
|---|---|---|---|
| Series B | Feb 18, 2026 | $1B | $5B |
| Series A | Sep 13, 2024 | $230M | $1B |
| Series A | Apr 1, 2024 | $61.5M | $300M |
- AHAndreessen Horowitz
- NVNVIDIA
- RVRadical Ventures
- AKAndrej Karpathy
- AKAshton Kutcher
- CICisco Investments
- DVDatabricks Ventures
- ECEmerson Collective
- ESEric Schmidt
- FIFidelity
| Kind | Implied valuation | Price / share | Date |
|---|---|---|---|
| $2.6B | $123.67 | Sep 23, 2026 | |
| $2.5B | $119.94 | Sep 22, 2026 | |
| $2.5B | $119.33 | Sep 14, 2026 |
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Data as of Oct 17, 2026. Valuations are estimates blended from primary and secondary-market signals — not investment advice.
