Robonaut 2 vs UBTECH Walker S1
Side-by-side comparison of Robonaut 2 (NASA) and UBTECH Walker S1 (UBTECH Robotics Corp Ltd.) — specs, pricing, Robolist Trust Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Cleaning & Facilities buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
Robonaut 2—
UBTECH Walker S1CN
Year First Available
- Robonaut 22011
- UBTECH Walker S1—
Verified Deployments
- Robonaut 20 Deployments
- UBTECH Walker S10 Deployments
Layer 2: Operational
Price Range (USD)
- Robonaut 2$2,500,000
- UBTECH Walker S1$75,000
Battery / Shift Runtime
- Robonaut 220 hrs
- UBTECH Walker S12 hrs
Availability Status
- Robonaut 2ACTIVE
- UBTECH Walker S1ACTIVE
Physical Form Factor
Weight
- Robonaut 2150 kg
- UBTECH Walker S176 kg
Height
- Robonaut 21000 mm
- UBTECH Walker S1172 mm
Mobility Type
- Robonaut 2bipedal
- UBTECH Walker S1bipedal
Humanoid Subtype
- Robonaut 2full bipedal
- UBTECH Walker S1full bipedal
Walking Speed
- Robonaut 2—
- UBTECH Walker S10.8 m/s
Running Capable
- Robonaut 2—
- UBTECH Walker S1dynamic walk
Terrain
- Robonaut 2indoor
- UBTECH Walker S1flat_indoor
Payload & Dexterity
Payload
- Robonaut 2100 kg
- UBTECH Walker S115 kg
Total DOF
- Robonaut 214
- UBTECH Walker S141
Arm DOF
- Robonaut 27
- UBTECH Walker S1—
Hand DOF
- Robonaut 212
- UBTECH Walker S1—
Bimanual Coordination
- Robonaut 2—
- UBTECH Walker S1full bimanual
Tool Use
- Robonaut 2—
- UBTECH Walker S1production validated
Compute & AI
Onboard Compute
- Robonaut 2NASA developed process
- UBTECH Walker S1—
VLM Capable
- Robonaut 2—
- UBTECH Walker S1onboard small
Foundation Models
- Robonaut 2—
- UBTECH Walker S1RT-X
Imitation Learning
- Robonaut 2—
- UBTECH Walker S1multi task
Programming
- Robonaut 2code_ros, teleoperation
- UBTECH Walker S1ROS 2.0
Battery & Power
Runtime
- Robonaut 220 hrs
- UBTECH Walker S12 hrs
Safety
Force-Limited Arms
- Robonaut 2—
- UBTECH Walker S1Yes
Fall Recovery
- Robonaut 2—
- UBTECH Walker S1Yes
Human Detection Method
- Robonaut 2—
- UBTECH Walker S1multi modal
Safe Speed Near Humans
- Robonaut 2—
- UBTECH Walker S1ssm_equivalent
Software
SDK Languages
- Robonaut 2code_ros, teleoperation
- UBTECH Walker S1Python, C++
ROS Support
- Robonaut 2—
- UBTECH Walker S1ros2 vendor
Simulation Platforms
- Robonaut 2—
- UBTECH Walker S1NVIDIA Isaac Sim
Open API
- Robonaut 2—
- UBTECH Walker S1open rest
Air-Gap Capable
- Robonaut 2—
- UBTECH Walker S1Yes
Reliability
Deployment Maturity
- Robonaut 2production pilot
- UBTECH Walker S1production pilot
IP Rating
- Robonaut 2IP65
- UBTECH Walker S1—
Commercial
Price (USD)
- Robonaut 2$2,500,000
- UBTECH Walker S1$75,000
Price Tier
- Robonaut 2150K+
- UBTECH Walker S140-80K
Pricing Model
- Robonaut 2purchase
- UBTECH Walker S1purchase
Delivery Lead Time
- Robonaut 2—
- UBTECH Walker S12 mo
Production Pilots
- Robonaut 2—
- UBTECH Walker S1BMW Spartanburg, Mercedes-Benz
Applications
- Robonaut 2teleoperation, research
- UBTECH Walker S1service, entertainment, education
| Robonaut 2humanoidNASA 55.8Trust Score | UBTECH Walker S1humanoidUBTECH Robotics Corp Ltd. 54.9Trust Score | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | — | CN |
| Year First Available (values differ) | 2011 | — |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $2,500,000 | $75,000 |
| Battery / Shift Runtime (priority for Cleaning & Facilities buyers) (values differ) | 20 hrs | 2 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Weight (priority for Cleaning & Facilities buyers) (values differ) | 150 kg | 76 kg |
| Height (values differ) | 1000 mm | 172 mm |
| Mobility Type | bipedal | bipedal |
| Humanoid Subtype | full bipedal | full bipedal |
| Walking Speed (values differ) | — | 0.8 m/s |
| Running Capable (values differ) | — | dynamic walk |
| Terrain (values differ) | indoor | flat_indoor |
| Payload & Dexterity | ||
| Payload (values differ) | 100 kg | 15 kg |
| Total DOF (values differ) | 14 | 41 |
| Arm DOF (values differ) | 7 | — |
| Hand DOF (values differ) | 12 | — |
| Bimanual Coordination (values differ) | — | full bimanual |
| Tool Use (values differ) | — | production validated |
| Compute & AI | ||
| Onboard Compute (values differ) | NASA developed process | — |
| VLM Capable (values differ) | — | onboard small |
| Foundation Models (values differ) | — | RT-X |
| Imitation Learning (values differ) | — | multi task |
| Programming (values differ) | code_ros, teleoperation | ROS 2.0 |
| Battery & Power | ||
| Runtime (values differ) | 20 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_ros, teleoperation | Python, C++ |
| ROS Support (values differ) | — | ros2 vendor |
| Simulation Platforms (values differ) | — | NVIDIA Isaac Sim |
| Open API (values differ) | — | open rest |
| Air-Gap Capable (values differ) | — | Yes |
| Reliability | ||
| Deployment Maturity | production pilot | production pilot |
| IP Rating (values differ) | IP65 | — |
| Commercial | ||
| Price (USD) (values differ) | $2,500,000 | $75,000 |
| Price Tier (values differ) | 150K+ | 40-80K |
| Pricing Model | purchase | purchase |
| Delivery Lead Time (values differ) | — | 2 mo |
| Production Pilots (values differ) | — | BMW Spartanburg, Mercedes-Benz |
| Applications (values differ) | teleoperation, research | 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, Warranty
About this comparison
Robonaut 2 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.