
Why home robots struggle to scale and how real-world data is becoming the defining factor.

Skild AI, founded by two Carnegie Mellon robotics professors, is building a universal foundation model called the Skild Brain designed to power diverse robot bodies across industries without per-robot reprogramming. The article covers its architecture, training approach, and rapid rise toward a potential $4 billion valuation.

Apptronik, founded out of NASA collaboration at UT Austin, developed Apollo — a 5'8" general-purpose humanoid robot targeting industrial environments. The company's February 2025 $403 million Series A, backed by Google DeepMind, Mercedes-Benz, and NVIDIA, positions it for commercial deployment in warehouses and manufacturing facilities.

Humanoid robots are the most practical form factor for general-purpose AI because human civilization has built its entire infrastructure, tools, and environments around the human body. The article presents nine concrete reasons — from data abundance to telepresence — for why this form factor is uniquely suited for widespread deployment.