Eva vs Walker S1

Side-by-side comparison of Eva (Hanson Robotics) and Walker S1 (UBTECH Robotics Corp Ltd.) — specs, pricing, Robo Score, and verified deployments. Updated daily.

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Optimized for Cleaning & Facilities buyers. Priority specs lifted to the top and marked with a target.

Eva66.5

Walker S169.6

Layer 1: Identity & Trust

Manufacturer Country

EvaHong Kong
Walker S1China

Year First Available

Eva2014
Walker S12024

Verified Deployments

Eva0 Deployments
Walker S10 Deployments

Layer 2: Operational

Price

Eva$23,000 USD
Walker S1$75,000 USD

Battery / Shift Runtime

Eva8 hrs
Walker S12 hrs

Availability Status

EvaACTIVE
Walker S1ACTIVE

Physical Form Factor

Weight

Eva9.5 kg
Walker S176 kg

Height

Eva167 mm
Walker S1130 mm

Mobility Type

Evabipedal
Walker S1bipedal

Humanoid Subtype

Evafull bipedal
Walker S1full bipedal

Walking Speed

Eva1.5 m/s
Walker S10.8 m/s

Stair Climbing

Eva—
Walker S1Yes

Terrain

Evaboth
Walker S1flat indoor, uneven outdoor, gravel, tile, thick carpet, lawn

Payload & Dexterity

Payload

Eva0.6 kg
Walker S110 kg

Total DOF

Eva83
Walker S141

Arm DOF

Eva15
Walker S17

Hand DOF

Eva10
Walker S16

Arm Reach

Eva60 cm
Walker S160 cm

Bimanual Coordination

Evaindependent
Walker S1Yes

Compute & AI

Onboard Compute

EvaNVIDIA Jetson Xavier AGX
Walker S1Intel i7 8665U Frequency 1.9Ghz *2, NVIDIA GT1030 graphics card, 384 cores

Compute Platform

EvaIntel i7
Walker S1—

VLM Capable

Evacloud only
Walker S1No

Foundation Models

Eva—
Walker S1false

Imitation Learning

Eva—
Walker S1No

Programming

Evavisual_block, code_python
Walker S1ROS 2.0

Battery & Power

Runtime

Eva8 hrs
Walker S12 hrs

Battery Swap

Eva—
Walker S1No

Safety

Human Detection Method

Evavision human
Walker S1—

Software

SDK Languages

Evavisual_block, code_python
Walker S1Python

ROS Support

EvaYes
Walker S1Yes

Open API

EvaYes
Walker S1Yes

Air-Gap Capable

EvaNo
Walker S1—

Reliability

Deployment Maturity

Evaproduction pilot
Walker S1commercial

IP Rating

EvaIP20
Walker S1—

Commercial

Price (USD)

Eva$23,000 USD
Walker S1$75,000 USD

Price Tier

Eva40-80K
Walker S140-80K

Pricing Model

Evapre-order
Walker S1purchase

Warranty

Eva1 yrs
Walker S12 yrs

Applications

Evamachine_tending, inspection, quality_control_checks, research
Walker S1service, entertainment, education

	EvahumanoidHanson Robotics 66.5Robo Score	Walker S1humanoidUBTECH Robotics Corp Ltd. 69.6Robo Score
Layer 1: Identity & Trust
Manufacturer Country (values differ)	Hong Kong	China
Year First Available (values differ)	2014	2024
Verified Deployments	0 Deployments	0 Deployments
Layer 2: Operational
Price (values differ)	$23,000 USD	$75,000 USD
Battery / Shift Runtime (priority for Cleaning & Facilities buyers) (values differ)	8 hrs	2 hrs
Availability Status	ACTIVE	ACTIVE
Layer 3: Category Specific
Physical Form Factor
Weight (priority for Cleaning & Facilities buyers) (values differ)	9.5 kg	76 kg
Height (values differ)	167 mm	130 mm
Mobility Type	bipedal	bipedal
Humanoid Subtype	full bipedal	full bipedal
Walking Speed (values differ)	1.5 m/s	0.8 m/s
Stair Climbing (values differ)	—	Yes
Terrain (values differ)	both	flat indoor, uneven outdoor, gravel, tile, thick carpet, lawn
Payload & Dexterity
Payload (values differ)	0.6 kg	10 kg
Total DOF (values differ)	83	41
Arm DOF (values differ)	15	7
Hand DOF (values differ)	10	6
Arm Reach	60 cm	60 cm
Bimanual Coordination (values differ)	independent	Yes
Compute & AI
Onboard Compute (values differ)	NVIDIA Jetson Xavier AGX	Intel i7 8665U Frequency 1.9Ghz *2, NVIDIA GT1030 graphics card, 384 cores
Compute Platform (values differ)	Intel i7	—
VLM Capable (values differ)	cloud only	No
Foundation Models (values differ)	—	false
Imitation Learning (values differ)	—	No
Programming (values differ)	visual_block, code_python	ROS 2.0
Battery & Power
Runtime (values differ)	8 hrs	2 hrs
Battery Swap (values differ)	—	No
Safety
Human Detection Method (values differ)	vision human	—
Software
SDK Languages (values differ)	visual_block, code_python	Python
ROS Support	Yes	Yes
Open API	Yes	Yes
Air-Gap Capable (values differ)	No	—
Reliability
Deployment Maturity (values differ)	production pilot	commercial
IP Rating (values differ)	IP20	—
Commercial
Price (USD) (values differ)	$23,000 USD	$75,000 USD
Price Tier	40-80K	40-80K
Pricing Model (values differ)	pre-order	purchase
Warranty (values differ)	1 yrs	2 yrs
Applications (values differ)	machine_tending, inspection, quality_control_checks, 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, Teleoperation, Battery Capacity, Charging Time, Charging Method, Avg Power Consumption, Force-Limited Arms, Fall Recovery, Fall Detection Response, Emergency Stops, Safe Speed Near Humans, Simulation Platforms, MTBF, Task Success Rate, Noise Level, RaaS / Month, Developer Unit Price, Delivery Lead Time, 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.

Robots (fleet)

Hours / day

Labor $/hr (USD)

Days / year

Annual labor displaced (per robot): $50,000

Metric	Eva	Walker S1
Investment	$23,000	$75,000
Payback period	5.5 mo	18.0 mo
Net savings (5 yr)	$227,000	$175,000
ROI (5 yr)	+987%	+233%

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 Eva and Walker S1?

Eva is made by Hanson Robotics, based in HK. Walker S1 is made by UBTECH Robotics Corp Ltd., based in CN.

When were Eva and Walker S1 launched?

Eva launched in 2014. Walker S1 launched in 2024.

How much does Eva cost compared to Walker S1?

Eva is listed at $23,000. Walker S1 is listed at $75,000.

How do Eva and Walker S1 compare on the Robo Score?

Eva scores 66.5 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.

What is the payload difference between Eva and Walker S1?

Eva carries up to 1.25 kg. Walker S1 carries up to 10 kg.

Are Eva 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 Eva 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

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About this comparison

Eva 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.