AlphaBot 2 vs Walker S1
Side-by-side comparison of AlphaBot 2 (AI² Robotics) and Walker S1 (UBTECH Robotics Corp Ltd.) — specs, pricing, Robo Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Home & Household buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- AlphaBot 2China
- Walker S1China
Year First Available
- AlphaBot 22025
- Walker S12024
Verified Deployments
- AlphaBot 20 Deployments
- Walker S10 Deployments
Layer 2: Operational
Price
- AlphaBot 2Contact for quote
- Walker S1$75,000 USD
Battery / Shift Runtime
- AlphaBot 26 hrs
- Walker S12 hrs
Availability Status
- AlphaBot 2ACTIVE
- Walker S1ACTIVE
Physical Form Factor
Weight
- AlphaBot 2—
- Walker S176 kg
Height
- AlphaBot 2—
- Walker S1130 mm
Mobility Type
- AlphaBot 2bipedal
- Walker S1bipedal
Humanoid Subtype
- AlphaBot 2full bipedal
- Walker S1full bipedal
Walking Speed
- AlphaBot 2—
- Walker S10.8 m/s
Running Capable
- AlphaBot 2static walk
- Walker S1—
Stair Climbing
- AlphaBot 2Yes
- Walker S1Yes
Terrain
- AlphaBot 2flat indoor, uneven outdoor
- Walker S1flat indoor, uneven outdoor, gravel, tile, thick carpet, lawn
Payload & Dexterity
Payload
- AlphaBot 2—
- Walker S110 kg
Total DOF
- AlphaBot 234
- Walker S141
Arm DOF
- AlphaBot 2—
- Walker S17
Hand DOF
- AlphaBot 2—
- Walker S16
Arm Reach
- AlphaBot 270 cm
- Walker S160 cm
Manipulation Repeatability
- AlphaBot 2±0.02 mm
- Walker S1—
Bimanual Coordination
- AlphaBot 2Yes
- Walker S1Yes
Tool Use
- AlphaBot 2production validated
- Walker S1—
Compute & AI
Onboard Compute
- AlphaBot 2Alpha Brain
- Walker S1Intel i7 8665U Frequency 1.9Ghz *2, NVIDIA GT1030 graphics card, 384 cores
Compute Platform
- AlphaBot 2ATMEGA328P-AU (8-bit AVR, 16 MHz)
- Walker S1—
VLM Capable
- AlphaBot 2No
- Walker S1No
Foundation Models
- AlphaBot 2Alpha Brain GOVLA
- Walker S1false
Imitation Learning
- AlphaBot 2No
- Walker S1No
Teleoperation
- AlphaBot 2none
- Walker S1—
Programming
- AlphaBot 2VLA (Vision-Language-Action)
- Walker S1ROS 2.0
Battery & Power
Runtime
- AlphaBot 26 hrs
- Walker S12 hrs
Charging Method
- AlphaBot 2manual swap
- Walker S1—
Battery Swap
- AlphaBot 2No
- Walker S1No
Safety
Force-Limited Arms
- AlphaBot 2Yes
- Walker S1—
Fall Recovery
- AlphaBot 2Yes
- Walker S1—
Human Detection Method
- AlphaBot 2multi modal
- Walker S1—
Safe Speed Near Humans
- AlphaBot 2none
- Walker S1—
Software
SDK Languages
- AlphaBot 2Python, ROS2
- Walker S1Python
ROS Support
- AlphaBot 2ros2 vendor
- Walker S1Yes
Open API
- AlphaBot 2open rest websocket
- Walker S1Yes
Air-Gap Capable
- AlphaBot 2Yes
- Walker S1—
Reliability
Deployment Maturity
- AlphaBot 2commercial
- Walker S1commercial
Commercial
Price (USD)
- AlphaBot 2Contact for quote
- Walker S1$75,000 USD
Price Tier
- AlphaBot 2150K+
- Walker S140-80K
Pricing Model
- AlphaBot 2capex, pilot_fee
- Walker S1purchase
Warranty
- AlphaBot 2—
- Walker S12 yrs
Production Pilots
- AlphaBot 2Huaxi Bio (华熙生物)
- Walker S1—
Applications
- AlphaBot 2assembly, inspection, warehouse_transport, hospitality
- Walker S1service, entertainment, education
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country | China | China |
| Year First Available (values differ) | 2025 | 2024 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price (values differ) | Contact for quote | $75,000 USD |
| Battery / Shift Runtime (priority for Home & Household buyers) (values differ) | 6 hrs | 2 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Weight (priority for Home & Household buyers) (values differ) | — | 76 kg |
| Height (values differ) | — | 130 mm |
| Mobility Type | bipedal | bipedal |
| Humanoid Subtype | full bipedal | full bipedal |
| Walking Speed (values differ) | — | 0.8 m/s |
| Running Capable (values differ) | static walk | — |
| Stair Climbing | Yes | Yes |
| Terrain (values differ) | flat indoor, uneven outdoor | flat indoor, uneven outdoor, gravel, tile, thick carpet, lawn |
| Payload & Dexterity | ||
| Payload (values differ) | — | 10 kg |
| Total DOF (values differ) | 34 | 41 |
| Arm DOF (values differ) | — | 7 |
| Hand DOF (values differ) | — | 6 |
| Arm Reach (values differ) | 70 cm | 60 cm |
| Manipulation Repeatability (values differ) | ±0.02 mm | — |
| Bimanual Coordination | Yes | Yes |
| Tool Use (values differ) | production validated | — |
| Compute & AI | ||
| Onboard Compute (values differ) | Alpha Brain | Intel i7 8665U Frequency 1.9Ghz *2, NVIDIA GT1030 graphics card, 384 cores |
| Compute Platform (values differ) | ATMEGA328P-AU (8-bit AVR, 16 MHz) | — |
| VLM Capable | No | No |
| Foundation Models (values differ) | Alpha Brain GOVLA | false |
| Imitation Learning | No | No |
| Teleoperation (values differ) | none | — |
| Programming (values differ) | VLA (Vision-Language-Action) | ROS 2.0 |
| Battery & Power | ||
| Runtime (values differ) | 6 hrs | 2 hrs |
| Charging Method (values differ) | manual swap | — |
| Battery Swap | No | No |
| 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) | none | — |
| Software | ||
| SDK Languages (values differ) | Python, ROS2 | Python |
| ROS Support (values differ) | ros2 vendor | Yes |
| Open API (values differ) | open rest websocket | Yes |
| Air-Gap Capable (values differ) | Yes | — |
| Reliability | ||
| Deployment Maturity | commercial | commercial |
| Commercial | ||
| Price (USD) (values differ) | Contact for quote | $75,000 USD |
| Price Tier (values differ) | 150K+ | 40-80K |
| Pricing Model (values differ) | capex, pilot_fee | purchase |
| Warranty (values differ) | — | 2 yrs |
| Production Pilots (values differ) | Huaxi Bio (华熙生物) | — |
| Applications (values differ) | assembly, inspection, warehouse_transport, hospitality | service, entertainment, education |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Payload (Peak), Grip Strength, Battery Capacity, Charging Time, Avg Power Consumption, Fall Detection Response, Emergency Stops, Simulation Platforms, MTBF, Task Success Rate, IP Rating, Noise Level, RaaS / Month, Developer Unit Price, Delivery Lead Time
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 | AlphaBot 2 | Walker S1 |
|---|---|---|
| Investment | No price | $75,000 |
| Payback period | — | 18.0 mo |
| Net savings (5 yr) | — | $175,000 |
| ROI (5 yr) | — | +233% |
AlphaBot 2 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 AlphaBot 2 and Walker S1?
AlphaBot 2 is made by AI² Robotics, based in CN. Walker S1 is made by UBTECH Robotics Corp Ltd., based in CN.
When were AlphaBot 2 and Walker S1 launched?
AlphaBot 2 launched in 2025. Walker S1 launched in 2024.
How do AlphaBot 2 and Walker S1 compare on the Robo Score?
AlphaBot 2 scores 61.3 on the Robo Score. Walker S1 scores 69.6. The Robo Score is a 0–100 credibility figure blending commercial maturity, verified deployments, company standing, and independent coverage — see methodology for the full breakdown.
Are AlphaBot 2 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 AlphaBot 2 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
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About this comparison
AlphaBot 2 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 Robo Score is calculated.