Fourier GR-2 vs Poppy Humanoid
Generated from the registry · revision 2026-09-26 · openness out of 100
Fourier GR-2 is 91 cm taller (175 vs 84 cm) and 59.5 kg heavier (63 vs 3.5 kg) than Poppy Humanoid. Fourier GR-2 has 28 more degrees of freedom (53 vs 25) than Poppy Humanoid. Openness score: Fourier GR-2 30, Poppy Humanoid 90 (of 100); only Poppy Humanoid publishes CAD, BOM and FW. Availability: Fourier GR-2 buy, Poppy Humanoid kit.
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Side by side
■ rows differ| Field | Fourier (Fourier Intelligence)Fourier GR-2 | Poppy Project (Inria Flowers)Poppy Humanoid | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Fourier (Fourier Intelligence) | Poppy Project (Inria Flowers) | |
| Class | Humanoid | Humanoid | |
| Status (differs) | Active | Orphaned | |
| Availability (differs) | Buy | Kit | |
| Country (differs) | China | France | |
| Year | 2024 | —unsourced | |
| Specifications | |||
| Height (differs) | 175cm | 84cm | +91 cm (+108%) |
| Mass (differs) | 63kg | 3.5kg | +59.5 kg (+1700%) |
| Degrees of freedom (differs) | 53 | 25 | +28 (+112%) |
| Payload | 3kg | —unsourced | |
| Top speed | —unsourced | —unsourced | |
| Runtime | 120min | —unsourced | |
| Battery capacity | —unsourced | —unsourced | |
| Price | —unsourced | —unsourced | |
| Actuators (differs) | Fourier FSA 2.0 actuators (>380 N·m peak) | Dynamixel: 19 MX-28AT, 4 MX-64AT, 2 AX-12A | |
| Compute | —unsourced | Raspberry Pi (current kit version) | |
| Sensors | —unsourced | —unsourced | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 30/ 100 | 90/ 100 | −60 |
| 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) | not public | not public | |
| Verification level | L1 | L1 | |
| Sources (differs) | 2 | 6 | |
| 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, Poppy Humanoid.
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