AlphaBot 2 vs Justin
Side-by-side comparison of AlphaBot 2 (AI² Robotics) and Justin (German Aerospace Center (DLR)) — specs, pricing, Robo Index, and verified deployments. Updated daily.
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Layer 1: Identity & Trust
Manufacturer Country
- AlphaBot 2China
- JustinGermany
Year First Available
- AlphaBot 22025
- Justin2009
Verified Deployments
- AlphaBot 20 Deployments
- Justin0 Deployments
Layer 2: Operational
Battery / Shift Runtime
- AlphaBot 26 hrs
- Justin1 hrs
Availability Status
- AlphaBot 2ACTIVE
- JustinACTIVE
Physical Form Factor
Height
- AlphaBot 2—
- Justin191 mm
Weight
- AlphaBot 2—
- Justin195 kg
Mobility Type
- AlphaBot 2bipedal
- Justinbipedal
Humanoid Subtype
- AlphaBot 2full bipedal
- Justinresearch platform
Walking Speed
- AlphaBot 2—
- Justin2 m/s
Running Capable
- AlphaBot 2static walk
- Justin—
Stair Climbing
- AlphaBot 2Yes
- Justin—
Terrain
- AlphaBot 2flat indoor, uneven outdoor
- Justinflat indoor, uneven outdoor
Payload & Dexterity
Payload
- AlphaBot 2—
- Justin20 kg
Total DOF
- AlphaBot 234
- Justin51
Arm DOF
- AlphaBot 2—
- Justin7
Hand DOF
- AlphaBot 2—
- Justin13
Arm Reach
- AlphaBot 270 cm
- Justin270 cm
Manipulation Repeatability
- AlphaBot 2±0.02 mm
- Justin—
Bimanual Coordination
- AlphaBot 2Yes
- Justinfull bimanual
Tool Use
- AlphaBot 2production validated
- Justin—
Compute & AI
Onboard Compute
- AlphaBot 2Alpha Brain
- Justin4x Intel Xeon Quadcore
Compute Platform
- AlphaBot 2ATMEGA328P-AU (8-bit AVR, 16 MHz)
- Justin—
VLM Capable
- AlphaBot 2No
- Justin—
Foundation Models
- AlphaBot 2Alpha Brain GOVLA
- Justin—
Imitation Learning
- AlphaBot 2No
- Justin—
Teleoperation
- AlphaBot 2none
- Justinweb_interface
Programming
- AlphaBot 2VLA (Vision-Language-Action)
- Justincode_ros
Battery & Power
Runtime
- AlphaBot 26 hrs
- Justin1 hrs
Charging Method
- AlphaBot 2manual swap
- Justin—
Battery Swap
- AlphaBot 2No
- Justin—
Safety
Force-Limited Arms
- AlphaBot 2Yes
- JustinYes
Fall Recovery
- AlphaBot 2Yes
- Justin—
Human Detection Method
- AlphaBot 2multi modal
- Justin—
Safe Speed Near Humans
- AlphaBot 2none
- Justin—
Software
SDK Languages
- AlphaBot 2Python, ROS2
- Justincode_ros
ROS Support
- AlphaBot 2ros2 vendor
- Justin—
Open API
- AlphaBot 2open rest websocket
- Justin—
Air-Gap Capable
- AlphaBot 2Yes
- Justin—
Reliability
Deployment Maturity
- AlphaBot 2commercial
- Justinprototype
Commercial
Price Tier
- AlphaBot 2150K+
- Justin—
Pricing Model
- AlphaBot 2capex, pilot_fee
- Justin—
Production Pilots
- AlphaBot 2Huaxi Bio (华熙生物)
- Justin—
Applications
- AlphaBot 2assembly, inspection, warehouse_transport, hospitality
- Justinhousehold_work, space_assistance
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | China | Germany |
| Year First Available (values differ) | 2025 | 2009 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Battery / Shift Runtime (values differ) | 6 hrs | 1 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Height (values differ) | — | 191 mm |
| Weight (values differ) | — | 195 kg |
| Mobility Type | bipedal | bipedal |
| Humanoid Subtype (values differ) | full bipedal | research platform |
| Walking Speed (values differ) | — | 2 m/s |
| Running Capable (values differ) | static walk | — |
| Stair Climbing (values differ) | Yes | — |
| Terrain (values differ) | flat indoor, uneven outdoor | flat indoor, uneven outdoor |
| Payload & Dexterity | ||
| Payload (values differ) | — | 20 kg |
| Total DOF (values differ) | 34 | 51 |
| Arm DOF (values differ) | — | 7 |
| Hand DOF (values differ) | — | 13 |
| Arm Reach (values differ) | 70 cm | 270 cm |
| Manipulation Repeatability (values differ) | ±0.02 mm | — |
| Bimanual Coordination (values differ) | Yes | full bimanual |
| Tool Use (values differ) | production validated | — |
| Compute & AI | ||
| Onboard Compute (values differ) | Alpha Brain | 4x Intel Xeon Quadcore |
| 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 | web_interface |
| Programming (values differ) | VLA (Vision-Language-Action) | code_ros |
| Battery & Power | ||
| Runtime (values differ) | 6 hrs | 1 hrs |
| Charging Method (values differ) | manual swap | — |
| Battery Swap (values differ) | No | — |
| Safety | ||
| Force-Limited Arms (values differ) | Yes | 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 | code_ros |
| ROS Support (values differ) | ros2 vendor | — |
| Open API (values differ) | open rest websocket | — |
| Air-Gap Capable (values differ) | Yes | — |
| Reliability | ||
| Deployment Maturity (values differ) | commercial | prototype |
| Commercial | ||
| Price Tier (values differ) | 150K+ | — |
| Pricing Model (values differ) | capex, pilot_fee | — |
| Production Pilots (values differ) | Huaxi Bio (华熙生物) | — |
| Applications (values differ) | assembly, inspection, warehouse_transport, hospitality | household_work, space_assistance |
Insufficient data for full comparison
The following fields had no data for any of the selected robots: Price, 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, Price (USD), RaaS / Month, Developer Unit Price, Delivery Lead Time, Warranty
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 | Justin |
|---|---|---|
| Investment | No price | No price |
| Payback period | — | — |
| Net savings (5 yr) | — | — |
| ROI (5 yr) | — | — |
AlphaBot 2, Justin have 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 Justin?
AlphaBot 2 is made by AI² Robotics, based in CN. Justin is made by German Aerospace Center (DLR), based in DE.
When were AlphaBot 2 and Justin launched?
AlphaBot 2 launched in 2025. Justin launched in 2009.
How do AlphaBot 2 and Justin compare on the Robo Index?
AlphaBot 2 grades AA on the Robo Index. Justin grades BB. 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 AlphaBot 2 and Justin 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 Justin?
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 Justin 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.