Palantir Technologies Inc ($PLTR) and Nebius Group ($NBIS) have announced a strategic AI infrastructure partnership, with Palantir naming Nebius its preferred sovereign AI infrastructure partner. The collaboration integrates Nebius compute and inference endpoints directly inside Palantir's enterprise perimeter, allowing commercial customers to run open AI models while maintaining data control. Both companies will also work together to bring new AI compute capacity online faster through modular data-center deployments.