Agility Cassie vs Fourier N1
Generated from the registry · revision 2026-09-26 · openness out of 100
Cassie has 13 fewer degrees of freedom (10 vs 23) than Fourier N1. Openness score: Cassie 20, Fourier N1 85 (of 100); only Fourier N1 publishes CAD, BOM, SW and POL. Availability: Cassie research only, Fourier N1 buy.
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Side by side
■ rows differ| Field | Agility RoboticsAgility Cassie | Fourier (Fourier Intelligence)Fourier N1 | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Agility Robotics | Fourier (Fourier Intelligence) | |
| Class (differs) | Biped | Humanoid | |
| Status (differs) | Discontinued | Active | |
| Availability (differs) | Research only | Buy | |
| Country (differs) | United States | China | |
| Year (differs) | 2017 | 2025 | |
| Specifications | |||
| Height | —unsourced | 130cm | |
| Mass | —unsourced | 38kg | |
| Degrees of freedom (differs) | 10 | 23 | −13 (-57%) |
| Payload | —unsourced | —unsourced | |
| Top speed | —unsourced | 3.5m/s | |
| Runtime | —unsourced | 120min | |
| Battery capacity | —unsourced | —unsourced | |
| Price | Not for sale | —unsourced | |
| Actuators | —unsourced | Fourier FSA actuators; URDF effort limits 95 N·m x4, 54 N·m x7, 30 N·m x12 | |
| Compute | —unsourced | —unsourced | |
| Sensors | —unsourced | —unsourced | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 20/ 100 | 85/ 100 | −65 |
| CAD (25) (differs) | not public | public | |
| Bill of materials (20) (differs) | not public | public | |
| Sim model (URDF/MJCF) (20) | public | public | |
| Firmware (15) | not public | not public | |
| Software (10) (differs) | not public | public | |
| Trained policies (10) (differs) | not public | public | |
| Verification level | L2 | L2 | |
| Sources (differs) | 3 | 8 | |
| 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: Cassie, Fourier N1.
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