Twendy One vs Walker S2
Side-by-side comparison of Twendy One (Waseda University) and Walker S2 (UBTECH Robotics Corp Ltd.) — specs, pricing, Robo Index, and verified deployments. Updated daily.
Prices in
View savedOptimize comparison for buyer
Optimized for Healthcare & Hospitals buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- Twendy OneJapan
- Walker S2China
Year First Available
- Twendy One2007
- Walker S22012
Verified Deployments
- Twendy One0 Deployments
- Walker S20 Deployments
Layer 2: Operational
Price
- Twendy OneContact for quote
- Walker S2$99,995–$314,286 USD
Battery / Shift Runtime
- Twendy One0.5 hrs
- Walker S22 hrs
Availability Status
- Twendy OneACTIVE
- Walker S2ACTIVE
Physical Form Factor
Height
- Twendy One146 mm
- Walker S2176 mm
Weight
- Twendy One111 kg
- Walker S295 kg
Mobility Type
- Twendy Onebipedal
- Walker S2bipedal
Humanoid Subtype
- Twendy Onefull bipedal
- Walker S2full bipedal
Walking Speed
- Twendy One0.8 m/s
- Walker S22 m/s
Running Capable
- Twendy Onestatic walk
- Walker S2—
Stair Climbing
- Twendy OneNo
- Walker S2Yes
Terrain
- Twendy Oneflat indoor
- Walker S2flat indoor, stairs
Payload & Dexterity
Payload
- Twendy One5 kg
- Walker S252 kg
Payload (Peak)
- Twendy One10 kg
- Walker S2—
Total DOF
- Twendy One47
- Walker S252
Arm DOF
- Twendy One7
- Walker S27
Hand DOF
- Twendy One13
- Walker S27
Arm Reach
- Twendy One60 cm
- Walker S2—
Grip Strength
- Twendy One10 N
- Walker S2—
Manipulation Repeatability
- Twendy One±2 mm
- Walker S2—
Bimanual Coordination
- Twendy OneNo
- Walker S2Yes
Tool Use
- Twendy Onenone
- Walker S2—
Compute & AI
Onboard Compute
- Twendy One—
- Walker S2X86 + NVIDIA Jetson Orin
VLM Capable
- Twendy OneNo
- Walker S2No
Foundation Models
- Twendy Onefalse
- Walker S2false
Imitation Learning
- Twendy OneNo
- Walker S2No
Teleoperation
- Twendy Onenone
- Walker S2—
Programming
- Twendy One—
- Walker S2code_ros
Battery & Power
Runtime
- Twendy One—
- Walker S22 hrs
Charging Method
- Twendy Onetethered
- Walker S2—
Battery Swap
- Twendy OneNo
- Walker S2Yes
Safety
Force-Limited Arms
- Twendy OneYes
- Walker S2—
Fall Recovery
- Twendy OneYes
- Walker S2—
Emergency Stops
- Twendy One1
- Walker S2—
Human Detection Method
- Twendy Onevision human
- Walker S2—
Safe Speed Near Humans
- Twendy Onenone
- Walker S2—
Software
SDK Languages
- Twendy OnePython, C++
- Walker S2Python
ROS Support
- Twendy Onenone
- Walker S2Yes
Simulation Platforms
- Twendy OneNVIDIA Isaac Sim, MuJoCo
- Walker S2—
Open API
- Twendy Oneclosed
- Walker S2Yes
Air-Gap Capable
- Twendy OneNo
- Walker S2—
Reliability
Task Success Rate
- Twendy One95 %
- Walker S2—
Deployment Maturity
- Twendy Oneprototype
- Walker S2commercial
Noise Level
- Twendy One60 dB
- Walker S2—
Commercial
Price (USD)
- Twendy OneContact for quote
- Walker S2$99,995–$314,286 USD
Price Tier
- Twendy Oneunder_50k
- Walker S280-150K
Pricing Model
- Twendy Onecapex
- Walker S2purchase
Delivery Lead Time
- Twendy One3 mo
- Walker S2—
Warranty
- Twendy One1 yrs
- Walker S2—
Applications
- Twendy Oneresearch
- Walker S2industrial automation, 24/7 manufacturing
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Japan | China |
| Year First Available (values differ) | 2007 | 2012 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | Contact for quote | $99,995–$314,286 USD |
| Battery / Shift Runtime (values differ) | 0.5 hrs | 2 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Height (values differ) | 146 mm | 176 mm |
| Weight (values differ) | 111 kg | 95 kg |
| Mobility Type | bipedal | bipedal |
| Humanoid Subtype | full bipedal | full bipedal |
| Walking Speed (values differ) | 0.8 m/s | 2 m/s |
| Running Capable (values differ) | static walk | — |
| Stair Climbing (values differ) | No | Yes |
| Terrain (values differ) | flat indoor | flat indoor, stairs |
| Payload & Dexterity | ||
| Payload (values differ) | 5 kg | 52 kg |
| Payload (Peak) (values differ) | 10 kg | — |
| Total DOF (values differ) | 47 | 52 |
| Arm DOF | 7 | 7 |
| Hand DOF (values differ) | 13 | 7 |
| Arm Reach (values differ) | 60 cm | — |
| Grip Strength (values differ) | 10 N | — |
| Manipulation Repeatability (values differ) | ±2 mm | — |
| Bimanual Coordination (values differ) | No | Yes |
| Tool Use (values differ) | none | — |
| Compute & AI | ||
| Onboard Compute (values differ) | — | X86 + NVIDIA Jetson Orin |
| VLM Capable | No | No |
| Foundation Models | false | false |
| Imitation Learning | No | No |
| Teleoperation (values differ) | none | — |
| Programming (values differ) | — | code_ros |
| Battery & Power | ||
| Runtime (values differ) | — | 2 hrs |
| Charging Method (values differ) | tethered | — |
| Battery Swap (values differ) | No | Yes |
| Safety | ||
| Force-Limited Arms (values differ) | Yes | — |
| Fall Recovery (values differ) | Yes | — |
| Emergency Stops (values differ) | 1 | — |
| Human Detection Method (values differ) | vision human | — |
| Safe Speed Near Humans (values differ) | none | — |
| Software | ||
| SDK Languages (values differ) | Python, C++ | Python |
| ROS Support (values differ) | none | Yes |
| Simulation Platforms (values differ) | NVIDIA Isaac Sim, MuJoCo | — |
| Open API (values differ) | closed | Yes |
| Air-Gap Capable (values differ) | No | — |
| Reliability | ||
| Task Success Rate (values differ) | 95 % | — |
| Deployment Maturity (values differ) | prototype | commercial |
| Noise Level (values differ) | 60 dB | — |
| Commercial | ||
| Price (USD) (values differ) | Contact for quote | $99,995–$314,286 USD |
| Price Tier (values differ) | under_50k | 80-150K |
| Pricing Model (values differ) | capex | purchase |
| Delivery Lead Time (values differ) | 3 mo | — |
| Warranty (values differ) | 1 yrs | — |
| Applications (values differ) | research | industrial automation, 24/7 manufacturing |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Compute Platform, Battery Capacity, Charging Time, Avg Power Consumption, Fall Detection Response, MTBF, IP Rating, RaaS / Month, Developer Unit Price, Production Pilots
best in categoryweakest in categoryvalues differ
ROI Comparison
Same operating assumptions across every robot — the only difference is price. Set your numbers once to see which pays back fastest.
Annual labor displaced (per robot): $50,000
| Metric | Twendy One | Walker S2 |
|---|---|---|
| Investment | No price | $207,140 |
| Payback period | — | 49.7 mo |
| Net savings (5 yr) | — | $42,860 |
| ROI (5 yr) | — | +21% |
Twendy One has no listed price, so payback can't be computed. Contact the manufacturer for a quote.
Estimates labor-cost displacement only — not a full total cost of ownership. Actual ROI depends on integration, maintenance, training, downtime, and task fit. Converted currencies are indicative; USD is the price of record.
Trade-offs at a glance
Frequently asked
Who makes Twendy One and Walker S2?
Twendy One is made by Waseda University, based in JP. Walker S2 is made by UBTECH Robotics Corp Ltd., based in CN.
When were Twendy One and Walker S2 launched?
Twendy One launched in 2007. Walker S2 launched in 2012.
How do Twendy One and Walker S2 compare on the Robo Index?
Twendy One grades BB on the Robo Index. Walker S2 grades AA. The Robo Index is a credibility grade (AAA … C) that blends commercial maturity, verified deployments, company standing, and independent coverage — see methodology for the full breakdown.
What is the payload difference between Twendy One and Walker S2?
Twendy One carries up to 5 kg. Walker S2 carries up to 15 kg.
Are Twendy One and Walker S2 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 Twendy One and Walker S2?
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
Want to be notified when specs or pricing change for these robots? Drop your email.
About this comparison
Twendy One vs 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 Robo Index is calculated.