Fourier GR-2 vs Shanghai Kepler Robotics Co., Ltd. Forerunner K2
Cite this page
humanoidrecord.com, "Fourier GR-2 vs Shanghai Kepler Robotics Co., Ltd. Forerunner K2", page snapshot 2026-11-03, https://humanoidrecord.com/compare/fourier-gr-2-vs-kepler-k2/
Dataset date: 2026-11-03
Height to scale. Width is schematic, derived from weight; not a measured body width.
- claimed → demonstrated
- demonstrated
- first delivery recorded
Evidence sheet
| Property | Fourier GR-2 | Shanghai Kepler Robotics Co., Ltd. Forerunner K2 | Difference |
|---|---|---|---|
| Height (cm) | 175 cm2Not reviewedThe cited source has not been reviewed for this specific claim. | 175 cm5Not reviewedThe cited source has not been reviewed for this specific claim. | 0 cm |
| Weight (kg) | 63 kg6Not reviewedThe cited source has not been reviewed for this specific claim. | 75 kg7Not reviewedThe cited source has not been reviewed for this specific claim. | +12 kg |
| Degrees of freedom | 538Needs reviewThe reviewed source does not provide enough evidence for this specific claim.
| 529Source unavailableThe cited source could not be accessed during review.
| -1 DoF |
| Walking speed (km/h) | no sourced value | no sourced value | no sourced value |
| Payload (kg) | 3 kg1Not reviewedThe cited source has not been reviewed for this specific claim. | 30 kg3Not reviewedThe cited source has not been reviewed for this specific claim. | +27 kg |
| Battery runtime (min) | no sourced value | 480 min4Not reviewedThe cited source has not been reviewed for this specific claim. | unknown on one side |
| Hands | 12 DoF per hand, tactile sensors10Not reviewedThe cited source has not been reviewed for this specific claim. | no sourced value | unknown on one side |
| Actuator torque (Nm) | 380 Nm11Source unavailableThe cited source could not be accessed during review.
| no sourced value | unknown on one side |
| Battery (Wh) | no sourced value | no sourced value | no sourced value |
| Battery swappable | yes12Not reviewedThe cited source has not been reviewed for this specific claim. | no sourced value | unknown on one side |
| Locomotion | no sourced value | bipedal13Not reviewedThe cited source has not been reviewed for this specific claim. | unknown on one side |
| SDK / ROS | no sourced value | no sourced value | no sourced value |
| Simulation | 2 simulation artifacts confirmed.
Official · URDF · GR-2 v3.0.1
Artifact evidence
Evidence review: supportedThe cited source was reviewed and supports this specific claim. This does not establish independent truth.
No simulator compatibility claim recorded. Official · MJCF · GR-2 v3_8_7
Artifact evidence
Evidence review: supportedThe cited source was reviewed and supports this specific claim. This does not establish independent truth.
No simulator compatibility claim recorded. | No simulation artifact confirmed in targeted searchThis records a searched-but-not-confirmed result. It does not mean simulation support is unavailable.
| — |
| Actuator architecture | No actuator architecture confirmed in targeted searchThis records a searched-but-not-confirmed result. It does not mean a particular architecture is absent.
| No actuator architecture confirmed in targeted searchThis records a searched-but-not-confirmed result. It does not mean a particular architecture is absent.
| — |
| Warranty (shortest–longest) | no sourced value | no sourced value | no sourced value |
| Order type | no sourced value | preorder14Not reviewedThe cited source has not been reviewed for this specific claim. | unknown on one side |
| Latest price | no sourced value | 248,00015Not reviewedThe cited source has not been reviewed for this specific claim. | unknown on one side |
| Announced | 2024-09-3016Not reviewedThe cited source has not been reviewed for this specific claim. | 2024-10-2117Not reviewedThe cited source has not been reviewed for this specific claim. | +1 mo |
| Recorded first customer delivery | no sourced value | no sourced value | no sourced value |
| Recorded delivery status | Recorded claimed | Recorded demonstrated | — |
Capabilities
| Capability | Fourier GR-2 | Shanghai Kepler Robotics Co., Ltd. Forerunner K2 |
|---|---|---|
| Continuous operation (1h+) | — | ?18Source unavailableThe cited source could not be accessed during review.
|
Notes
- single-arm load capacity of 3 kg (6.6 lb.) (accessed 2026-09-20) — source
- 175 cm (68.9 in.) (accessed 2026-09-20) — source
- 30 kg (66 lbs) (accessed 2026-09-20) — source
- 1-hour charge, 8-hour operation (accessed 2026-09-20) — source
- 175 cm (5 ft 9 in) (accessed 2026-09-20) — source
- 63 kg (139 lb.) (accessed 2026-09-20) — source
- 75 kg (165 lbs) (accessed 2026-09-20) — source
- 53 degrees of freedom (accessed 2026-09-27) — source
- 52 total; hands feature up to 11 DOF per hand (active and passive) (accessed 2026-09-20) — source
- 12-DoF dexterous hands—double the dexterity of previous models (accessed 2026-09-20) — source
- With peak torques exceeding 380 N.m (280.3 ft.-lb.), the FSA 2.0 actuators boost GR-2's agility and dynamic capabilities. (accessed 2026-09-21) — source
- Since the battery is now swappable, users will be able to swap batteries quickly and return GR-2 to work. (accessed 2026-09-21) — source
- improved gait planning and control algorithms have enhanced K2's stability against external disturbances and its walking speed (accessed 2026-09-21) — source
- World's first commercially available planetary roller screw-driven humanoid robot (accessed 2026-09-21) — source
- Pre-sales launched with three configurations starting at ¥248,000 (accessed 2026-09-20) — source
- Standing at 175 cm and weighing 63 kg (accessed 2026-09-20) — source
- The Forerunner K2 represents the Gen 5.0 robot model, showcasing a seamless integration of the humanoid robot's cerebral, cerebellar, and high-load body functions. (accessed 2026-09-20) — source
- 1-hour charge, 8-hour operation (accessed 2026-09-20) — source
Cite this comparison: https://humanoidrecord.com/compare/fourier-gr-2-vs-kepler-k2/ (data snapshot 2026-11-03)
Correct this comparison or email corrections@humanoidrecord.com.