Kirobo Mini vs Walker S2
Side-by-side comparison of Kirobo Mini (Toyota) and Walker S2 (UBTECH Robotics Corp Ltd.) — specs, pricing, Robo Index, and verified deployments. Updated daily.
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Optimized for Agriculture buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- Kirobo MiniJapan
- Walker S2China
Year First Available
- Kirobo Mini2016
- Walker S22012
Verified Deployments
- Kirobo Mini0 Deployments
- Walker S20 Deployments
Layer 2: Operational
Price
- Kirobo Mini$474 USD
- Walker S2$99,995–$314,286 USD
Battery / Shift Runtime
- Kirobo Mini2.5 hrs
- Walker S22 hrs
Availability Status
- Kirobo MiniACTIVE
- Walker S2ACTIVE
Physical Form Factor
Height
- Kirobo Mini10 cm
- Walker S2176 mm
Weight
- Kirobo Mini0.2 kg
- Walker S295 kg
Mobility Type
- Kirobo Ministatic
- Walker S2bipedal
Humanoid Subtype
- Kirobo Minifull bipedal
- Walker S2full bipedal
Walking Speed
- Kirobo Mini—
- Walker S22 m/s
Stair Climbing
- Kirobo MiniNo
- Walker S2Yes
Terrain
- Kirobo Miniflat indoor
- Walker S2flat indoor, stairs
Payload & Dexterity
Payload
- Kirobo Mini—
- Walker S252 kg
Total DOF
- Kirobo Mini—
- Walker S252
Arm DOF
- Kirobo Mini—
- Walker S27
Hand DOF
- Kirobo Mini—
- Walker S27
Bimanual Coordination
- Kirobo MiniNo
- Walker S2Yes
Compute & AI
Onboard Compute
- Kirobo Mini—
- Walker S2X86 + NVIDIA Jetson Orin
VLM Capable
- Kirobo MiniNo
- Walker S2No
Foundation Models
- Kirobo Mini—
- Walker S2false
Imitation Learning
- Kirobo MiniNo
- Walker S2No
Programming
- Kirobo Minidedicated app
- Walker S2code_ros
Battery & Power
Runtime
- Kirobo Mini2.5 hrs
- Walker S22 hrs
Battery Swap
- Kirobo MiniNo
- Walker S2Yes
Software
SDK Languages
- Kirobo MiniJapanese
- Walker S2Python
ROS Support
- Kirobo MiniNo
- Walker S2Yes
Open API
- Kirobo MiniNo
- Walker S2Yes
Reliability
Deployment Maturity
- Kirobo Minicommercial
- Walker S2commercial
Commercial
Price (USD)
- Kirobo Mini$474 USD
- Walker S2$99,995–$314,286 USD
Price Tier
- Kirobo Miniunder_50k
- Walker S280-150K
Pricing Model
- Kirobo Minioutright purchase
- Walker S2purchase
Applications
- Kirobo Minieldercare_assistance, hospitality
- Walker S2industrial automation, 24/7 manufacturing
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Japan | China |
| Year First Available (values differ) | 2016 | 2012 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | $474 USD | $99,995–$314,286 USD |
| Battery / Shift Runtime (priority for Agriculture buyers) (values differ) | 2.5 hrs | 2 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Height (values differ) | 10 cm | 176 mm |
| Weight (values differ) | 0.2 kg | 95 kg |
| Mobility Type (values differ) | static | bipedal |
| Humanoid Subtype | full bipedal | full bipedal |
| Walking Speed (values differ) | — | 2 m/s |
| Stair Climbing (values differ) | No | Yes |
| Terrain (values differ) | flat indoor | flat indoor, stairs |
| Payload & Dexterity | ||
| Payload (values differ) | — | 52 kg |
| Total DOF (values differ) | — | 52 |
| Arm DOF (values differ) | — | 7 |
| Hand DOF (values differ) | — | 7 |
| Bimanual Coordination (values differ) | No | Yes |
| Compute & AI | ||
| Onboard Compute (values differ) | — | X86 + NVIDIA Jetson Orin |
| VLM Capable | No | No |
| Foundation Models (values differ) | — | false |
| Imitation Learning | No | No |
| Programming (values differ) | dedicated app | code_ros |
| Battery & Power | ||
| Runtime (values differ) | 2.5 hrs | 2 hrs |
| Battery Swap (values differ) | No | Yes |
| Software | ||
| SDK Languages (values differ) | Japanese | Python |
| ROS Support (values differ) | No | Yes |
| Open API (values differ) | No | Yes |
| Reliability | ||
| Deployment Maturity | commercial | commercial |
| Commercial | ||
| Price (USD) (values differ) | $474 USD | $99,995–$314,286 USD |
| Price Tier (values differ) | under_50k | 80-150K |
| Pricing Model (values differ) | outright purchase | purchase |
| Applications (values differ) | eldercare_assistance, hospitality | industrial automation, 24/7 manufacturing |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Running Capable, Payload (Peak), Arm Reach, 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, Warranty, 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 | Kirobo Mini | Walker S2 |
|---|---|---|
| Investment | $474 | $207,140 |
| Payback period | < 1 mo | 49.7 mo |
| Net savings (5 yr) | $249,526 | $42,860 |
| ROI (5 yr) | +52643% | +21% |
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 Kirobo Mini and Walker S2?
Kirobo Mini is made by Toyota, based in JP. Walker S2 is made by UBTECH Robotics Corp Ltd., based in CN.
When were Kirobo Mini and Walker S2 launched?
Kirobo Mini launched in 2016. Walker S2 launched in 2012.
How do Kirobo Mini and Walker S2 compare on the Robo Index?
Kirobo Mini grades AA 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.
Are Kirobo Mini 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 Kirobo Mini 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
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About this comparison
Kirobo Mini 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.