Fourier Intelligence

Open-source humanoids with rehabilitation roots — GR-2 at 53 DOF, GR-3 at 55

China Founded 2015 2 robots reviewed

Best Score

56.9

Fourier Intelligence GR-2

Average

About Fourier Intelligence

Fourier Intelligence was founded in 2015 in Shanghai, China, and built its reputation on exoskeleton rehabilitation devices before pivoting to general-purpose humanoid robots. This medical background gives Fourier a unique advantage in biomechanically accurate joint design and force/torque sensing. The GR-2 research humanoid features 53 total degrees of freedom — including 12 DOF per hand — among the most of any open-source research humanoid, while the later GR-3 Care-bot steps up to 55 DOF on a quote-only, care-focused chassis. The OpenLoong open-source software stack, contributed to by Shanghai's AI industry consortium, gives Fourier one of the strongest developer ecosystems among Chinese humanoids. With Intel RealSense depth cameras, 6-axis force/torque sensors, and full ROS2 support, GR-2 is positioned as one of the most research-friendly premium humanoids, available through enterprise programs at around $150,000.

Key Strengths

GR-2 53 DOF / GR-3 55 DOF, 12 per hand
OpenLoong open-source stack
Rehabilitation robotics heritage
Intel RealSense + 6-axis F/T sensors