Robonaut 1A vs UBTECH Walker S2
Side-by-side comparison of Robonaut 1A (NASA and DARPA) and UBTECH Walker S2 (UBTECH Robotics Corp Ltd.) — specs, pricing, Robolist Trust Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Last-Mile Delivery buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
Robonaut 1AUS
UBTECH Walker S2CN
Year First Available
- Robonaut 1A2011
- UBTECH Walker S22025
Verified Deployments
- Robonaut 1A0 Deployments
- UBTECH Walker S20 Deployments
Layer 2: Operational
Price Range (USD)
- Robonaut 1A$150,000
- UBTECH Walker S2$179,994
Battery / Shift Runtime
- Robonaut 1A8 hrs
- UBTECH Walker S22.5 hrs
Availability Status
- Robonaut 1AACTIVE
- UBTECH Walker S2ACTIVE
Physical Form Factor
Height
- Robonaut 1A1880 mm
- UBTECH Walker S21760 mm
Weight
- Robonaut 1A60 kg
- UBTECH Walker S243 kg
Walking Speed
- Robonaut 1A1.2 m/s
- UBTECH Walker S22 m/s
Terrain
- Robonaut 1Aindoor
- UBTECH Walker S2both
Payload & Dexterity
Payload
- Robonaut 1A9.1 kg
- UBTECH Walker S215 kg
Total DOF
- Robonaut 1A14
- UBTECH Walker S252
Arm DOF
- Robonaut 1A7
- UBTECH Walker S226
Hand DOF
- Robonaut 1A5
- UBTECH Walker S211
Compute & AI
Onboard Compute
- Robonaut 1ANVIDIA Jetson Xavier
- UBTECH Walker S2BrainNet 2.0
Programming
- Robonaut 1Acode_python, code_ros, visual_block
- UBTECH Walker S2code_python
Battery & Power
Runtime
- Robonaut 1A8 hrs
- UBTECH Walker S22.5 hrs
Software
SDK Languages
- Robonaut 1Acode_python, code_ros, visual_block
- UBTECH Walker S2code_python
ROS Support
- Robonaut 1AYes
- UBTECH Walker S2—
Open API
- Robonaut 1AYes
- UBTECH Walker S2—
Reliability
IP Rating
- Robonaut 1AIP54
- UBTECH Walker S2—
Commercial
Price (USD)
- Robonaut 1A$150,000
- UBTECH Walker S2$179,994
Price Tier
- Robonaut 1A150K+
- UBTECH Walker S2150K+
Pricing Model
- Robonaut 1Apurchase
- UBTECH Walker S2purchase
Warranty
- Robonaut 1A1 yrs
- UBTECH Walker S2—
Applications
- Robonaut 1Aresearch, hazardous_env
- UBTECH Walker S2automotive, warehousing, logistics
| Robonaut 1AhumanoidNASA and DARPA 55.8Trust Score | UBTECH Walker S2humanoidUBTECH Robotics Corp Ltd. 63.5Trust Score | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | US | CN |
| Year First Available (values differ) | 2011 | 2025 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $150,000 | $179,994 |
| Battery / Shift Runtime (priority for Last-Mile Delivery buyers) (values differ) | 8 hrs | 2.5 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Height (values differ) | 1880 mm | 1760 mm |
| Weight (values differ) | 60 kg | 43 kg |
| Walking Speed (values differ) | 1.2 m/s | 2 m/s |
| Terrain (values differ) | indoor | both |
| Payload & Dexterity | ||
| Payload (values differ) | 9.1 kg | 15 kg |
| Total DOF (values differ) | 14 | 52 |
| Arm DOF (values differ) | 7 | 26 |
| Hand DOF (values differ) | 5 | 11 |
| Compute & AI | ||
| Onboard Compute (values differ) | NVIDIA Jetson Xavier | BrainNet 2.0 |
| Programming (values differ) | code_python, code_ros, visual_block | code_python |
| Battery & Power | ||
| Runtime (values differ) | 8 hrs | 2.5 hrs |
| Software | ||
| SDK Languages (values differ) | code_python, code_ros, visual_block | code_python |
| ROS Support (values differ) | Yes | — |
| Open API (values differ) | Yes | — |
| Reliability | ||
| IP Rating (priority for Last-Mile Delivery buyers) (values differ) | IP54 | — |
| Commercial | ||
| Price (USD) (values differ) | $150,000 | $179,994 |
| Price Tier | 150K+ | 150K+ |
| Pricing Model | purchase | purchase |
| Warranty (values differ) | 1 yrs | — |
| Applications (values differ) | research, hazardous_env | automotive, warehousing, logistics |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Mobility Type, Humanoid Subtype, Running Capable, Stair Climbing, Payload (Peak), Arm Reach, Grip Strength, Manipulation Repeatability, Bimanual Coordination, Tool Use, Compute Platform, VLM Capable, Foundation Models, Imitation Learning, Teleoperation, Battery Capacity, Charging Time, Charging Method, Battery Swap, Avg Power Consumption, Force-Limited Arms, Fall Recovery, Fall Detection Response, Emergency Stops, Human Detection Method, Safe Speed Near Humans, Simulation Platforms, Air-Gap Capable, MTBF, Task Success Rate, Deployment Maturity, Noise Level, RaaS / Month, Developer Unit Price, Delivery Lead Time, Production Pilots
About this comparison
Robonaut 1A vs UBTECH Walker S2 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.