Fourier GR-2 vs Hyperspawn Dropbear
Generated from the registry · revision 2026-09-26 · openness out of 100
Fourier GR-2 is 5 cm shorter (175 vs 180 cm) and 18 kg heavier (63 vs 45 kg) than Dropbear. Fourier GR-2 has 21 more degrees of freedom (53 vs 32) and 2 kg less rated payload (3 vs 5 kg) than Dropbear. Openness score: Fourier GR-2 30, Dropbear 100 (of 100); only Dropbear publishes CAD, BOM, FW and POL. Availability: Fourier GR-2 buy, Dropbear preorder.
01
Side by side
■ rows differ| Field | Fourier (Fourier Intelligence)Fourier GR-2 | Hyperspawn RoboticsHyperspawn Dropbear | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Fourier (Fourier Intelligence) | Hyperspawn Robotics | |
| Class | Humanoid | Humanoid | |
| Status | Active | Active | |
| Availability (differs) | Buy | Preorder | |
| Country (differs) | China | India | |
| Year (differs) | 2024 | 2023 | |
| Specifications | |||
| Height (differs) | 175cm | 180cm | −5 cm (-3%) |
| Mass (differs) | 63kg | 45kg | +18 kg (+40%) |
| Degrees of freedom (differs) | 53 | 32 | +21 (+66%) |
| Payload (differs) | 3kg | 5kg | −2 kg (-40%) |
| Top speed | —unsourced | —unsourced | |
| Runtime | 120min | 120min | = |
| Battery capacity | —unsourced | 960Wh | |
| Price | —unsourced | 9,999USD | |
| Actuators (differs) | Fourier FSA 2.0 actuators (>380 N·m peak) | MyActuator RMD-X10, RMD-X8, RMD-X6 and CEM-60 over 1 Mbit/s CAN (18 per the 2026 BOM; myactuator-can lists 12 RMD-X8 Pro, 4 RMD-X10 V3, 6 CEM-60); 6 NEMA 17 lead-screw steppers in the Stewart-platform neck. hyperspawn.ai: servo + QDD. | |
| Compute | —unsourced | NVIDIA Jetson AGX Orin 64GB (BOM; Orin NX 16GB alternative) plus one ESP32-DevKitC-V4 CAN node per limb. Kit: Raspberry Pi 5 base, Jetson Orin advanced. | |
| Sensors | —unsourced | Intel RealSense D455f depth camera, IMU (center-IMU controller role), foot load cells (4x HX711 per foot, dropbear-feet), actuator encoders; five AS5600 magnetic angle sensors per leg controller (observation-safe firmware) | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 30/ 100 | 100/ 100 | −70 |
| CAD (25) (differs) | not public | public | |
| Bill of materials (20) (differs) | not public | public | |
| Sim model (URDF/MJCF) (20) | public | public | |
| Firmware (15) (differs) | not public | public | |
| Software (10) | public | public | |
| Trained policies (10) (differs) | not public | public | |
| Verification level (differs) | L1 | L2 | |
| Sources (differs) | 2 | 16 | |
| Last checked (differs) | 2026-09-24 | 2026-09-25 | |
A dash is an unsourced figure, not zero. Sources for each robot are listed on its spec sheet: Fourier GR-2, Dropbear.
02