sizeless (YC S23) — The spatial AI to plan, build and maintain the world's infrast…
sizeless is the spatial AI to plan, build, and maintain the world's infrastructure by automating the 3D documentation and planning of the world’s underground infrastructure. Construction crews capture a short smartphone video of a construction site and get an automated, millimeter-precise digital twin with automatic part identification.
sizeless is a Y Combinator company in the Summer 2023 batch. Its directory entry describes it as: The spatial AI to plan, build and maintain the world's infrastructure. The founders listed are Roger de Belsunce (Founder), Cornelius von Einem (Founder) (Y Combinator directory entry, August 4, 2023).
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sizeless is the spatial AI to plan, build, and maintain the world's infrastructure by automating the 3D documentation and planning of the world’s underground infrastructure. Construction crews capture a short smartphone video of a construction site and get an automated, millimeter-precise digital twin with automatic part identification. We compress weeks of manual surveying and back-office planning work into hours. Our documentation and planning platform is currently in production: we have signed 7 paid pilots in 3 months with a potential ACV of $1.4M.
sizeless (https://sizeless.co) spun out of research in robotics and spatial AI: co-founders Cornelius von Einem (PhD, ETH Zürich) and Roger de Belsunce (Physics & AI postdoc at MIT) lead the technology, while Julius Schilling (insurance, Aon) leads the commercial side. sizeless is building the proprietary training-data layer that all construction robots will run on.
Roger de Belsunce
Founder
Cornelius von Einem
Founder
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
One of 28 companies held here in Real Estate and Construction.
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sizeless (YC S23) — The spatial AI to plan, build and maintain the world's infrastructure. MentionFox, 2026-10-27. https://mentionfox.com/funding/yc-sizeless
