REEM-C vs Walker S1
Side-by-side comparison of REEM-C (PAL Robotics) and Walker S1 (UBTECH Robotics Corp Ltd.) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Agriculture buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- REEM-CSpain
- Walker S1China
Year First Available
- REEM-C2013
- Walker S12012
Verified Deployments
- REEM-C0 Deployments
- Walker S10 Deployments
Layer 2: Operational
Price Range (USD)
- REEM-C$300,000
- Walker S1$75,000
Battery / Shift Runtime
- REEM-C3 hrs
- Walker S12 hrs
Availability Status
- REEM-CACTIVE
- Walker S1ACTIVE
Physical Form Factor
Height
- REEM-C165 mm
- Walker S1130 mm
Weight
- REEM-C80 kg
- Walker S176 kg
Mobility Type
- REEM-Cbipedal
- Walker S1bipedal
Humanoid Subtype
- REEM-Cfull bipedal
- Walker S1full bipedal
Walking Speed
- REEM-C0.7 m/s
- Walker S10.8 m/s
Stair Climbing
- REEM-CYes
- Walker S1Yes
Terrain
- REEM-Cflat indoor
- Walker S1flat indoor, uneven outdoor, gravel, tile, thick carpet, lawn
Payload & Dexterity
Payload
- REEM-C1 kg
- Walker S110 kg
Total DOF
- REEM-C44
- Walker S141
Arm DOF
- REEM-C7
- Walker S17
Hand DOF
- REEM-C19
- Walker S16
Arm Reach
- REEM-C—
- Walker S160 cm
Bimanual Coordination
- REEM-CNo
- Walker S1Yes
Compute & AI
Onboard Compute
- REEM-CDual i7 computers
- Walker S1Intel i7 8665U Frequency 1.9Ghz *2, NVIDIA GT1030 graphics card, 384 cores
VLM Capable
- REEM-CNo
- Walker S1No
Foundation Models
- REEM-Cfalse
- Walker S1false
Imitation Learning
- REEM-CNo
- Walker S1No
Programming
- REEM-CSDK
- Walker S1ROS 2.0
Battery & Power
Runtime
- REEM-C3 hrs
- Walker S12 hrs
Battery Swap
- REEM-CNo
- Walker S1No
Software
SDK Languages
- REEM-CC++, Python
- Walker S1Python
ROS Support
- REEM-CYes
- Walker S1Yes
Open API
- REEM-CYes
- Walker S1Yes
Reliability
Deployment Maturity
- REEM-Cresearch
- Walker S1commercial
Commercial
Price (USD)
- REEM-C$300,000
- Walker S1$75,000
Price Tier
- REEM-C150K+
- Walker S140-80K
Pricing Model
- REEM-Clease
- Walker S1purchase
Warranty
- REEM-C—
- Walker S12 yrs
Applications
- REEM-Cresearch
- Walker S1service, entertainment, education
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Spain | China |
| Year First Available (values differ) | 2013 | 2012 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $300,000 | $75,000 |
| Battery / Shift Runtime (priority for Agriculture buyers) (values differ) | 3 hrs | 2 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Height (values differ) | 165 mm | 130 mm |
| Weight (values differ) | 80 kg | 76 kg |
| Mobility Type | bipedal | bipedal |
| Humanoid Subtype | full bipedal | full bipedal |
| Walking Speed (values differ) | 0.7 m/s | 0.8 m/s |
| Stair Climbing | Yes | Yes |
| Terrain (values differ) | flat indoor | flat indoor, uneven outdoor, gravel, tile, thick carpet, lawn |
| Payload & Dexterity | ||
| Payload (values differ) | 1 kg | 10 kg |
| Total DOF (values differ) | 44 | 41 |
| Arm DOF | 7 | 7 |
| Hand DOF (values differ) | 19 | 6 |
| Arm Reach (values differ) | — | 60 cm |
| Bimanual Coordination (values differ) | No | Yes |
| Compute & AI | ||
| Onboard Compute (values differ) | Dual i7 computers | Intel i7 8665U Frequency 1.9Ghz *2, NVIDIA GT1030 graphics card, 384 cores |
| VLM Capable | No | No |
| Foundation Models | false | false |
| Imitation Learning | No | No |
| Programming (values differ) | SDK | ROS 2.0 |
| Battery & Power | ||
| Runtime (values differ) | 3 hrs | 2 hrs |
| Battery Swap | No | No |
| Software | ||
| SDK Languages (values differ) | C++, Python | Python |
| ROS Support | Yes | Yes |
| Open API | Yes | Yes |
| Reliability | ||
| Deployment Maturity (values differ) | research | commercial |
| Commercial | ||
| Price (USD) (values differ) | $300,000 | $75,000 |
| Price Tier (values differ) | 150K+ | 40-80K |
| Pricing Model (values differ) | lease | purchase |
| Warranty (values differ) | — | 2 yrs |
| Applications (values differ) | research | service, entertainment, education |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Running Capable, Payload (Peak), Grip Strength, Manipulation Repeatability, Tool Use, Compute Platform, Teleoperation, Battery Capacity, Charging Time, Charging Method, 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, IP Rating, Noise Level, RaaS / Month, Developer Unit Price, Delivery Lead Time, Production Pilots
best in categoryweakest in categoryvalues differ
Trade-offs at a glance
Frequently asked
Who makes REEM-C and Walker S1?
REEM-C is made by PAL Robotics, based in ES. Walker S1 is made by UBTECH Robotics Corp Ltd., based in CN.
When were REEM-C and Walker S1 launched?
REEM-C launched in 2013. Walker S1 launched in 2012.
How much does REEM-C cost compared to Walker S1?
REEM-C is listed at $300,000. Walker S1 is listed at $75,000.
How do REEM-C and Walker S1 compare on the Robolist Product Score?
REEM-C scores 69/100. Walker S1 scores 64/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
What is the payload difference between REEM-C and Walker S1?
REEM-C carries up to 1 kg. Walker S1 carries up to 10 kg.
Are REEM-C and Walker S1 in the same category?
Both robots are classified as Humanoid on Robolist. Filters and ranking treat them as direct alternatives.
What is the realistic total cost of ownership for Humanoid robots?
Hardware cost is one input. Humanoid TCO also includes integration, training, downtime, and end-of-life. Our breakdown: Humanoid TCO: Hardware, Cloud Subscriptions, and the Cost of Teleop Time.
What should a buyer ask vendors when choosing between REEM-C and Walker S1?
Spec sheets only show part of the story. Useful vendor questions cover support, lifecycle, integration cost, and references. We have a buyer-focused checklist: Vendor Selection for Humanoids: The 10 Questions You Must Ask.
Going deeper — picking the right robot
Humanoid TCO: Hardware, Cloud Subscriptions, and the Cost of Teleop Time
8 min readHumanoid Robots
Vendor Selection for Humanoids: The 10 Questions You Must Ask
10 min readHumanoid Robots
Running a Humanoid Pilot: Scope, Success Criteria, and Exit Options
9 min readHumanoid Robots
Build vs buy vs lease: which model fits a first deployment
8 min readChoosing Your First Robot
The hidden specs vendors hope you'll miss
10 min readReading the Spec Sheet
About this comparison
REEM-C vs 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 Product Score is calculated.