Compare humanoids
Pick two to four robots. Every pair also has its own permanent page, 1,326 in total, generated from the same records.
01
Pick robots
52 humanoidsToddlerBot has 13.52 kg less rated payload (1.48 vs 15 kg) than UBTech Walker S (S1 / S2). Openness score: ToddlerBot 100, UBTech Walker S (S1 / S2) 0 (of 100); only ToddlerBot publishes CAD, BOM, SIM, FW, SW and POL. Availability: ToddlerBot diy build, UBTech Walker S (S1 / S2) buy.
| Field | Stanford UniversityStanford ToddlerBot | UBTech RoboticsUBTech Walker S (S1 / S2) | Δ first − second |
|---|---|---|---|
| Identity | |||
| Maker (differs) | Stanford University | UBTech Robotics | |
| Class | Humanoid | Humanoid | |
| Status (differs) | Research | Active | |
| Availability (differs) | DIY build | Buy | |
| Country (differs) | United States | China | |
| Year (differs) | 2025 | 2023 | |
| Specifications | |||
| Height | 56cm | —unsourced | |
| Mass | 3.4kg | —unsourced | |
| Degrees of freedom | 30 | —unsourced | |
| Payload (differs) | 1.48kg | 15kg | −13.52 kg (-90%) |
| Top speed | —unsourced | —unsourced | |
| Runtime | —unsourced | —unsourced | |
| Battery capacity | —unsourced | —unsourced | |
| Price | —unsourced | —unsourced | |
| Actuators (differs) | servo actuators; 7 DOF/arm, 6 DOF/leg, 2 neck, 2 waist | Servo joints with force feedback | |
| Compute (differs) | NVIDIA Jetson Orin NX 16GB | BrainNet 2.0 + Co-Agent (UBTech software) | |
| Sensors | —unsourced | RGB binocular stereo vision (S2) | |
| Openness and provenance | |||
| Openness bar | |||
| Openness score (differs) | 100/ 100 | 0/ 100 | +100 |
| CAD (25) (differs) | public | not public | |
| Bill of materials (20) (differs) | public | not public | |
| Sim model (URDF/MJCF) (20) (differs) | public | not public | |
| Firmware (15) (differs) | public | not public | |
| Software (10) (differs) | public | not public | |
| Trained policies (10) (differs) | public | not public | |
| Verification level (differs) | L2 | L0 | |
| Sources | 3 | 3 | |
| Last checked (differs) | 2026-09-25 | 2026-09-24 | |
03
Best-documented pairs
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