Fourier GR-2 vs Sanctuary Phoenix
Generated from the registry · revision 2026-09-26 · openness out of 100
Fourier GR-2 is 5 cm taller (175 vs 170 cm) and 7 kg lighter (63 vs 70 kg) than Phoenix. Fourier GR-2 has 22 kg less rated payload (3 vs 25 kg) than Phoenix. Openness score: Fourier GR-2 30, Phoenix 0 (of 100); only Fourier GR-2 publishes SIM and SW. Availability: Fourier GR-2 buy, Phoenix not for sale.
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Side by side
■ rows differ| Field | Fourier (Fourier Intelligence)Fourier GR-2 | Sanctuary AISanctuary Phoenix | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Fourier (Fourier Intelligence) | Sanctuary AI | |
| Class | Humanoid | Humanoid | |
| Status (differs) | Active | Research | |
| Availability (differs) | Buy | Not for sale | |
| Country (differs) | China | Canada | |
| Year (differs) | 2024 | 2023 | |
| Specifications | |||
| Height (differs) | 175cm | 170cm | +5 cm (+3%) |
| Mass (differs) | 63kg | 70kg | −7 kg (-10%) |
| Degrees of freedom | 53 | —unsourced | |
| Payload (differs) | 3kg | 25kg | −22 kg (-88%) |
| Top speed | —unsourced | 1.3m/s | |
| Runtime | 120min | —unsourced | |
| Battery capacity | —unsourced | —unsourced | |
| Price | —unsourced | Not for sale | |
| Actuators (differs) | Fourier FSA 2.0 actuators (>380 N·m peak) | Hydraulic hands (20 DOF total across both hands) | |
| Compute | —unsourced | Carbon AI control system | |
| Sensors | —unsourced | Haptic sensing in hands | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 30/ 100 | 0/ 100 | +30 |
| CAD (25) | not public | not public | |
| Bill of materials (20) | not public | not public | |
| Sim model (URDF/MJCF) (20) (differs) | public | not public | |
| Firmware (15) | not public | not public | |
| Software (10) (differs) | public | not public | |
| Trained policies (10) | not public | not public | |
| Verification level (differs) | L1 | L0 | |
| Sources | 2 | 2 | |
| Last checked | 2026-09-24 | 2026-09-24 | |
A dash is an unsourced figure, not zero. Sources for each robot are listed on its spec sheet: Fourier GR-2, Phoenix.
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