Robonaut 1A vs UBTECH Walker S1
Side-by-side comparison of Robonaut 1A (NASA and DARPA) and UBTECH Walker S1 (UBTECH Robotics Corp Ltd.) — specs, pricing, Robolist Trust Score, and verified deployments. Updated daily.
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Optimized for Last-Mile Delivery buyers. Priority specs lifted to the top and marked with a target.
 Robonaut 1AhumanoidNASA and DARPA55.8Trust Score |  UBTECH Walker S1humanoidUBTECH Robotics Corp Ltd.54.9Trust Score | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | US | CN |
| Year First Available (values differ) | 2011 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $150,000 | $75,000 |
| Battery / Shift Runtime (priority for Last-Mile Delivery buyers) (values differ) | 8 hrs | 2 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Height (values differ) | 1880 mm | 172 mm |
| Weight (values differ) | 60 kg | 76 kg |
| Mobility Type (values differ) | — | bipedal |
| Humanoid Subtype (values differ) | — | full bipedal |
| Walking Speed (values differ) | 1.2 m/s | 0.8 m/s |
| Running Capable (values differ) | — | dynamic walk |
| Terrain (values differ) | indoor | flat_indoor |
| Payload & Dexterity | ||
| Payload (values differ) | 9.1 kg | 15 kg |
| Total DOF (values differ) | 14 | 41 |
| Arm DOF (values differ) | 7 | — |
| Hand DOF (values differ) | 5 | — |
| Bimanual Coordination (values differ) | — | full bimanual |
| Tool Use (values differ) | — | production validated |
| Compute & AI | ||
| Onboard Compute (values differ) | NVIDIA Jetson Xavier | — |
| VLM Capable (values differ) | — | onboard small |
| Foundation Models (values differ) | — | RT-X |
| Imitation Learning (values differ) | — | multi task |
| Programming (values differ) | code_python, code_ros, visual_block | ROS 2.0 |
| Battery & Power | ||
| Runtime (values differ) | 8 hrs | 2 hrs |
| Safety | ||
| Force-Limited Arms (values differ) | — | Yes |
| Fall Recovery (values differ) | — | Yes |
| Human Detection Method (values differ) | — | multi modal |
| Safe Speed Near Humans (values differ) | — | ssm_equivalent |
| Software | ||
| SDK Languages (values differ) | code_python, code_ros, visual_block | Python, C++ |
| ROS Support (values differ) | Yes | ros2 vendor |
| Simulation Platforms (values differ) | — | NVIDIA Isaac Sim |
| Open API (values differ) | Yes | open rest |
| Air-Gap Capable (values differ) | — | Yes |
| Reliability | ||
| IP Rating (priority for Last-Mile Delivery buyers) (values differ) | IP54 | — |
| Deployment Maturity (values differ) | — | production pilot |
| Commercial | ||
| Price (USD) (values differ) | $150,000 | $75,000 |
| Price Tier (values differ) | 150K+ | 40-80K |
| Pricing Model | purchase | purchase |
| Delivery Lead Time (values differ) | — | 2 mo |
| Warranty (values differ) | 1 yrs | — |
| Production Pilots (values differ) | — | BMW Spartanburg, Mercedes-Benz |
| Applications (values differ) | research, hazardous_env | service, entertainment, education |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Stair Climbing, Payload (Peak), Arm Reach, Grip Strength, Manipulation Repeatability, Compute Platform, Teleoperation, Battery Capacity, Charging Time, Charging Method, Battery Swap, Avg Power Consumption, Fall Detection Response, Emergency Stops, MTBF, Task Success Rate, Noise Level, RaaS / Month, Developer Unit Price
About this comparison
Robonaut 1A vs UBTECH Walker S1 compares two robots in the humanoid category. All data is sourced from manufacturer spec sheets, verified deployments, and third-party filings; see our methodology for how the Robolist Trust Score is calculated.