Alpha 1S vs Kojiro

Side-by-side comparison of Alpha 1S (UBTECH Robotics Corp Ltd.) and Kojiro (Tokyo University) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.

View saved

Optimize comparison for buyer

Default Hospitality & F&B Warehousing & Logistics Manufacturing Healthcare & Hospitals Cleaning & Facilities Last-Mile Delivery Agriculture

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

Alpha 1S37.8

Kojiro22.3

Layer 1: Identity & Trust

Manufacturer Country

Alpha 1SChina
Kojiro—

Year First Available

Alpha 1S2013
Kojiro2007

Verified Deployments

Alpha 1S0 Deployments
Kojiro0 Deployments

Layer 2: Operational

Price Range (USD)

Alpha 1S$3,999
KojiroContact for quote

Battery / Shift Runtime

Alpha 1S1 hrs
Kojiro—

Availability Status

Alpha 1SACTIVE
KojiroACTIVE

Physical Form Factor

Weight

Alpha 1S4 kg
Kojiro45 kg

Height

Alpha 1S59 mm
Kojiro133 mm

Mobility Type

Alpha 1Sbipedal
Kojirobipedal

Humanoid Subtype

Alpha 1Sservice humanoid
Kojirofull bipedal

Stair Climbing

Alpha 1SNo
KojiroNo

Terrain

Alpha 1Sflat indoor
Kojirolaboratory

Payload & Dexterity

Total DOF

Alpha 1S20
Kojiro56

Arm DOF

Alpha 1S3
Kojiro5

Hand DOF

Alpha 1S—
Kojiro3

Bimanual Coordination

Alpha 1SNo
KojiroNo

Compute & AI

Onboard Compute

Alpha 1SRM 32位 Cortex-A7 CPU: 900MHz
Kojiro—

VLM Capable

Alpha 1SNo
KojiroNo

Foundation Models

Alpha 1Sfalse
Kojiro—

Imitation Learning

Alpha 1SNo
KojiroNo

Programming

Alpha 1Smodular programming
Kojiro—

Battery & Power

Runtime

Alpha 1S1 hrs
Kojiro—

Battery Swap

Alpha 1SNo
KojiroNo

Software

SDK Languages

Alpha 1SChinese
Kojiro—

ROS Support

Alpha 1SNo
KojiroNo

Open API

Alpha 1SNo
KojiroNo

Reliability

Deployment Maturity

Alpha 1Scommercial
Kojiroresearch

Commercial

Price (USD)

Alpha 1S$3,999
KojiroContact for quote

Price Tier

Alpha 1S40-80K
Kojiro—

Pricing Model

Alpha 1Spurchase
Kojiro—

Applications

Alpha 1S娱乐
Kojirolearning to mimic human walking, potential home service tasks

	Alpha 1ShumanoidUBTECH Robotics Corp Ltd. 37.8Product Score	KojirohumanoidTokyo University 22.3Product Score
Layer 1: Identity & Trust
Manufacturer Country (values differ)	China	—
Year First Available (values differ)	2013	2007
Verified Deployments	0 Deployments	0 Deployments
Layer 2: Operational
Price Range (USD) (values differ)	$3,999	Contact for quote
Battery / Shift Runtime (priority for Cleaning & Facilities buyers) (values differ)	1 hrs	—
Availability Status	ACTIVE	ACTIVE
Layer 3: Category Specific
Physical Form Factor
Weight (priority for Cleaning & Facilities buyers) (values differ)	4 kg	45 kg
Height (values differ)	59 mm	133 mm
Mobility Type	bipedal	bipedal
Humanoid Subtype (values differ)	service humanoid	full bipedal
Stair Climbing	No	No
Terrain (values differ)	flat indoor	laboratory
Payload & Dexterity
Total DOF (values differ)	20	56
Arm DOF (values differ)	3	5
Hand DOF (values differ)	—	3
Bimanual Coordination	No	No
Compute & AI
Onboard Compute (values differ)	RM 32位 Cortex-A7 CPU: 900MHz	—
VLM Capable	No	No
Foundation Models (values differ)	false	—
Imitation Learning	No	No
Programming (values differ)	modular programming	—
Battery & Power
Runtime (values differ)	1 hrs	—
Battery Swap	No	No
Software
SDK Languages (values differ)	Chinese	—
ROS Support	No	No
Open API	No	No
Reliability
Deployment Maturity (values differ)	commercial	research
Commercial
Price (USD) (values differ)	$3,999	Contact for quote
Price Tier (values differ)	40-80K	—
Pricing Model (values differ)	purchase	—
Applications (values differ)	娱乐	learning to mimic human walking, potential home service tasks

Insufficient data for full comparison

The following fields had no data for any of the selected robots: Walking Speed, Running Capable, Payload, 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

Trade-offs at a glance

Frequently asked

Who makes Alpha 1S and Kojiro?

Alpha 1S is made by UBTECH Robotics Corp Ltd., based in CN. Kojiro is made by Tokyo University.

When were Alpha 1S and Kojiro launched?

Alpha 1S launched in 2013. Kojiro launched in 2007.

How do Alpha 1S and Kojiro compare on the Robolist Product Score?

Alpha 1S scores 38/100. Kojiro scores 22/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.

Are Alpha 1S and Kojiro 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 Alpha 1S and Kojiro?

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

About this comparison

Alpha 1S vs Kojiro 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.