Zenithon, a London-based AI lab working on world models for extreme physics, has raised a $10m round from Backed, Lunar, Seraphim, MMC and SOSV.

The funding will support the development of advanced simulation capabilities, including nuclear weapon simulations, as part of broader efforts to build AI systems capable of modeling complex physical phenomena.

Zenithon's approach focuses on creating foundational models that can understand and predict behaviors in high-energy and extreme physics domains, potentially accelerating scientific discovery.

The startup is part of a growing trend of AI companies targeting national security and defense applications, raising questions about the implications of advanced simulation technologies.