Some of the most valuable data in the world can never leave the building. Defense contractors, banks, hospitals, and nuclear plants can’t simply send it to a cloud AI API.
That creates an opportunity to bring frontier AI inside those walls: on-prem models, deployment tooling, security accreditation, and hardware for the parts of the economy the cloud can’t reach.
Apply for the Winter 2027 batch at ycombinator.com/apply.


