Quick Verdict
GR-1 leads in higher payload, while Forerunner K2 leads in more DOF, longer runtime. Overall, Forerunner K2 has an edge in 2 out of 3 compared categories.
GR-1
Fourier Intelligence
Forerunner K2
Kepler Robotics
DNA Fingerprint Overlay
GR-1 Forerunner K2
Specifications
~$150,000–$170,000Price$20,000
165 cmHeight178 cm
55 kgWeight85 kg
40DOF52
50 kgPayload15 kg
1hRuntime8h
1.39 m/sSpeed—
YesStairsYes
NoLiDARNo
NVIDIA Isaac Lab ecosystemCompute100 TOPS
Ecosystem Openness
65
GR-1
/100
—
Forerunner K2
ROS + Isaac Lab + MuJoCo. Growing research community.
Last updated: 2025