Fourier GR-2 vs K-Scale K-Bot
Generated from the registry · revision 2026-09-26 · openness out of 100
Fourier GR-2 is 35 cm taller (175 vs 140 cm) and 29 kg heavier (63 vs 34 kg) than K-Bot. Fourier GR-2 has 33 more degrees of freedom (53 vs 20) and 7 kg less rated payload (3 vs 10 kg) than K-Bot. Openness score: Fourier GR-2 30, K-Bot 100 (of 100); only K-Bot publishes CAD, BOM, FW and POL. Availability: Fourier GR-2 buy, K-Bot diy build.
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Side by side
■ rows differ| Field | Fourier (Fourier Intelligence)Fourier GR-2 | K-Scale LabsK-Scale K-Bot | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Fourier (Fourier Intelligence) | K-Scale Labs | |
| Class | Humanoid | Humanoid | |
| Status (differs) | Active | Discontinued | |
| Availability (differs) | Buy | DIY build | |
| Country (differs) | China | United States | |
| Year (differs) | 2024 | 2025 | |
| Specifications | |||
| Height (differs) | 175cm | 140cm | +35 cm (+25%) |
| Mass (differs) | 63kg | 34kg | +29 kg (+85%) |
| Degrees of freedom (differs) | 53 | 20 | +33 (+165%) |
| Payload (differs) | 3kg | 10kg | −7 kg (-70%) |
| Top speed | —unsourced | —unsourced | |
| Runtime (differs) | 120min | 240min | −120 min (-50%) |
| Battery capacity | —unsourced | —unsourced | |
| Price | —unsourced | 8,999USD | |
| Actuators (differs) | Fourier FSA 2.0 actuators (>380 N·m peak) | RobStride RS00 x2, RS02 x6, RS03 x8, RS04 x4 | |
| Compute | —unsourced | Raspberry Pi 5 | |
| Sensors | —unsourced | cameras, microphones, head sensor array | |
| 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 | L1 | L1 | |
| Sources (differs) | 2 | 7 | |
| 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, K-Bot.
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