Skild Brain

Skild AI's general-purpose robot brain, with a single model able to control quadrupeds, humanoids, arms, and other embodiments.

Skild Brain is a robot foundation model that American robotics company Skild AI made public in July 2025; the company was founded in 2023 by Carnegie Mellon University's Deepak Pathak and Abhinav Gupta. Skild Brain's central idea is 'omni-bodied': a single model can control quadrupeds, humanoids, tabletop arms, and mobile manipulation robots, without needing a separate design for each robot type. Structurally it has two layers: a low-frequency, high-level policy handles manipulation and navigation decisions, while a high-frequency, low-level policy converts these into joint angles and motor torques. Training relies mainly on large-scale simulation and internet video, followed by targeted real-robot data for post-training. The company states it trained on roughly 100,000 different simulated robot morphologies, so the model cannot simply memorize a solution for one specific body; in demonstrations, when a robot's lower leg is broken, its knee joint is locked, or a wheel gets stuck, it adjusts its gait within a few seconds and keeps moving. In January 2026, Skild AI raised a $1.4 billion Series C (led by SoftBank, valuing the company at more than $14 billion); in March it announced a partnership with ABB Robotics and Universal Robots to deploy Skild Brain in industrial settings, and in April it acquired Zebra Technologies' robotics business.

ExampleWith one leg of a quadruped robot locked at the knee — effectively leaving it only three usable legs — Skild Brain shifts its center of mass within two or three seconds and continues walking with a new gait.

Also called

Omni-bodied Brain

Related

Skild AI · Cross-Embodiment · Embodiment-agnostic · Skild S1 · Hierarchical Architecture · Sim-to-Real Transfer

Sources

Building the general-purpose robotic brain (Skild AI blog, 2025-07)
The case for an omni-bodied robot brain (Skild AI blog)
Announcing Series C (Skild AI blog, 2026-01)

As of

2026-04