足立レイ (Adachi Rei) vs AlphaBot 2

Q: Who makes 足立レイ (Adachi Rei) and AlphaBot 2?

足立レイ (Adachi Rei) is made by Mechanical Girl, based in JP. AlphaBot 2 is made by AI² Robotics, based in CN.

Q: When were 足立レイ (Adachi Rei) and AlphaBot 2 launched?

足立レイ (Adachi Rei) launched in 2022. AlphaBot 2 launched in 2025.

Q: How do 足立レイ (Adachi Rei) and AlphaBot 2 compare on the Robo Index?

足立レイ (Adachi Rei) grades BBB on the Robo Index. AlphaBot 2 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.

Q: Are 足立レイ (Adachi Rei) and AlphaBot 2 in the same category?

Both robots are classified as Humanoid on Robolist. Filters and ranking treat them as direct alternatives.

Q: 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.

Q: What should a buyer ask vendors when choosing between 足立レイ (Adachi Rei) and AlphaBot 2?

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.

Side-by-side comparison of 足立レイ (Adachi Rei) (Mechanical Girl) and AlphaBot 2 (AI² Robotics) — specs, pricing, Robo Index, and verified deployments. Updated daily.

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足立レイ (Adachi Rei)BBB

AlphaBot 2AA

Layer 1: Identity & Trust

Manufacturer Country

足立レイ (Adachi Rei)Japan
AlphaBot 2China

Year First Available

足立レイ (Adachi Rei)2022
AlphaBot 22025

Verified Deployments

足立レイ (Adachi Rei)0 Deployments
AlphaBot 20 Deployments

Layer 2: Operational

Price

足立レイ (Adachi Rei)$1,000 USD
AlphaBot 2Contact for quote

Battery / Shift Runtime

足立レイ (Adachi Rei)—
AlphaBot 26 hrs

Availability Status

足立レイ (Adachi Rei)ACTIVE
AlphaBot 2ACTIVE

Physical Form Factor

Height

足立レイ (Adachi Rei)168 mm
AlphaBot 2—

Weight

足立レイ (Adachi Rei)20 kg
AlphaBot 2—

Mobility Type

足立レイ (Adachi Rei)—
AlphaBot 2bipedal

Humanoid Subtype

足立レイ (Adachi Rei)digital avatar
AlphaBot 2full bipedal

Running Capable

足立レイ (Adachi Rei)—
AlphaBot 2static walk

Stair Climbing

足立レイ (Adachi Rei)—
AlphaBot 2Yes

Terrain

足立レイ (Adachi Rei)both
AlphaBot 2flat indoor, uneven outdoor

Payload & Dexterity

Total DOF

足立レイ (Adachi Rei)—
AlphaBot 234

Arm Reach

足立レイ (Adachi Rei)—
AlphaBot 270 cm

Manipulation Repeatability

足立レイ (Adachi Rei)—
AlphaBot 2±0.02 mm

Bimanual Coordination

足立レイ (Adachi Rei)—
AlphaBot 2Yes

Tool Use

足立レイ (Adachi Rei)—
AlphaBot 2production validated

Compute & AI

Onboard Compute

足立レイ (Adachi Rei)Intel i7-7567U @ 3.5GHz
AlphaBot 2Alpha Brain

Compute Platform

足立レイ (Adachi Rei)—
AlphaBot 2ATMEGA328P-AU (8-bit AVR, 16 MHz)

VLM Capable

足立レイ (Adachi Rei)—
AlphaBot 2No

Foundation Models

足立レイ (Adachi Rei)—
AlphaBot 2Alpha Brain GOVLA

Imitation Learning

足立レイ (Adachi Rei)—
AlphaBot 2No

Teleoperation

足立レイ (Adachi Rei)—
AlphaBot 2none

Programming

足立レイ (Adachi Rei)code_python, no_code_gui
AlphaBot 2VLA (Vision-Language-Action)

Battery & Power

Runtime

足立レイ (Adachi Rei)—
AlphaBot 26 hrs

Charging Method

足立レイ (Adachi Rei)—
AlphaBot 2manual swap

Battery Swap

足立レイ (Adachi Rei)—
AlphaBot 2No

Safety

Force-Limited Arms

足立レイ (Adachi Rei)—
AlphaBot 2Yes

Fall Recovery

足立レイ (Adachi Rei)—
AlphaBot 2Yes

Human Detection Method

足立レイ (Adachi Rei)—
AlphaBot 2multi modal

Safe Speed Near Humans

足立レイ (Adachi Rei)—
AlphaBot 2none

Software

SDK Languages

足立レイ (Adachi Rei)code_python, no_code_gui
AlphaBot 2Python, ROS2

ROS Support

足立レイ (Adachi Rei)—
AlphaBot 2ros2 vendor

Open API

足立レイ (Adachi Rei)—
AlphaBot 2open rest websocket

Air-Gap Capable

足立レイ (Adachi Rei)—
AlphaBot 2Yes

Reliability

Deployment Maturity

足立レイ (Adachi Rei)commercial
AlphaBot 2commercial

Commercial

Price (USD)

足立レイ (Adachi Rei)$1,000 USD
AlphaBot 2Contact for quote

Price Tier

足立レイ (Adachi Rei)<10K
AlphaBot 2150K+

Pricing Model

足立レイ (Adachi Rei)outright purchase
AlphaBot 2capex, pilot_fee

Production Pilots

足立レイ (Adachi Rei)—
AlphaBot 2Huaxi Bio (华熙生物)

Applications

足立レイ (Adachi Rei)teleoperation
AlphaBot 2assembly, inspection, warehouse_transport, hospitality

	足立レイ (Adachi Rei)humanoidMechanical Girl BBBRobo Index	AlphaBot 2humanoidAI² Robotics AARobo Index
Layer 1: Identity & Trust
Manufacturer Country (values differ)	Japan	China
Year First Available (values differ)	2022	2025
Verified Deployments	0 Deployments	0 Deployments
Layer 2: Operational
Price (values differ)	$1,000 USD	Contact for quote
Battery / Shift Runtime (values differ)	—	6 hrs
Availability Status	ACTIVE	ACTIVE
Layer 3: Category Specific
Physical Form Factor
Height (values differ)	168 mm	—
Weight (values differ)	20 kg	—
Mobility Type (values differ)	—	bipedal
Humanoid Subtype (values differ)	digital avatar	full bipedal
Running Capable (values differ)	—	static walk
Stair Climbing (values differ)	—	Yes
Terrain (values differ)	both	flat indoor, uneven outdoor
Payload & Dexterity
Total DOF (values differ)	—	34
Arm Reach (values differ)	—	70 cm
Manipulation Repeatability (values differ)	—	±0.02 mm
Bimanual Coordination (values differ)	—	Yes
Tool Use (values differ)	—	production validated
Compute & AI
Onboard Compute (values differ)	Intel i7-7567U @ 3.5GHz	Alpha Brain
Compute Platform (values differ)	—	ATMEGA328P-AU (8-bit AVR, 16 MHz)
VLM Capable (values differ)	—	No
Foundation Models (values differ)	—	Alpha Brain GOVLA
Imitation Learning (values differ)	—	No
Teleoperation (values differ)	—	none
Programming (values differ)	code_python, no_code_gui	VLA (Vision-Language-Action)
Battery & Power
Runtime (values differ)	—	6 hrs
Charging Method (values differ)	—	manual swap
Battery Swap (values differ)	—	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)	code_python, no_code_gui	Python, ROS2
ROS Support (values differ)	—	ros2 vendor
Open API (values differ)	—	open rest websocket
Air-Gap Capable (values differ)	—	Yes
Reliability
Deployment Maturity	commercial	commercial
Commercial
Price (USD) (values differ)	$1,000 USD	Contact for quote
Price Tier (values differ)	<10K	150K+
Pricing Model (values differ)	outright purchase	capex, pilot_fee
Production Pilots (values differ)	—	Huaxi Bio (华熙生物)
Applications (values differ)	teleoperation	assembly, inspection, warehouse_transport, hospitality

Insufficient data for full comparison

The following fields had no data for any of the selected robots: Walking Speed, Payload, Payload (Peak), Arm DOF, Hand DOF, 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, Warranty

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	足立レイ (Adachi Rei)	AlphaBot 2
Investment	$1,000	No price
Payback period	< 1 mo	—
Net savings (5 yr)	$249,000	—
ROI (5 yr)	+24900%	—

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 足立レイ (Adachi Rei) and AlphaBot 2?

足立レイ (Adachi Rei) is made by Mechanical Girl, based in JP. AlphaBot 2 is made by AI² Robotics, based in CN.

When were 足立レイ (Adachi Rei) and AlphaBot 2 launched?

足立レイ (Adachi Rei) launched in 2022. AlphaBot 2 launched in 2025.

How do 足立レイ (Adachi Rei) and AlphaBot 2 compare on the Robo Index?

足立レイ (Adachi Rei) grades BBB on the Robo Index. AlphaBot 2 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 足立レイ (Adachi Rei) and AlphaBot 2 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 足立レイ (Adachi Rei) and AlphaBot 2?

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

足立レイ (Adachi Rei) vs AlphaBot 2 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.