HRP-4 vs Justin
Side-by-side comparison of HRP-4 (Kawada Industries) and Justin (German Aerospace Center (DLR)) — specs, pricing, Robolist Product Score, and verified deployments. Updated daily.
Optimize comparison for buyer
Optimized for Agriculture buyers. Priority specs lifted to the top and marked with a target.
Layer 1: Identity & Trust
Manufacturer Country
- HRP-4Japan
- JustinGermany
Year First Available
- HRP-42010
- Justin2009
Verified Deployments
- HRP-40 Deployments
- Justin0 Deployments
Layer 2: Operational
Price Range (USD)
- HRP-4$300,000
- JustinContact for quote
Battery / Shift Runtime
- HRP-40.4 hrs
- Justin1 hrs
Availability Status
- HRP-4ACTIVE
- JustinACTIVE
Physical Form Factor
Height
- HRP-4151 mm
- Justin191 mm
Weight
- HRP-439 kg
- Justin195 kg
Mobility Type
- HRP-4bipedal
- Justinbipedal
Humanoid Subtype
- HRP-4research platform
- Justinresearch platform
Walking Speed
- HRP-40.6 m/s
- Justin2 m/s
Stair Climbing
- HRP-4No
- Justin—
Terrain
- HRP-4flat indoor
- Justinflat indoor, uneven outdoor
Payload & Dexterity
Payload
- HRP-40.5 kg
- Justin20 kg
Total DOF
- HRP-434
- Justin51
Arm DOF
- HRP-47
- Justin7
Hand DOF
- HRP-42
- Justin13
Arm Reach
- HRP-4—
- Justin270 cm
Bimanual Coordination
- HRP-4Yes
- Justinfull bimanual
Compute & AI
Onboard Compute
- HRP-4Linux kernel with RT-Preempt patch
- Justin4x Intel Xeon Quadcore
Compute Platform
- HRP-4Intel Pentium M (1.6 GHz)
- Justin—
VLM Capable
- HRP-4No
- Justin—
Foundation Models
- HRP-4false
- Justin—
Imitation Learning
- HRP-4No
- Justin—
Teleoperation
- HRP-4—
- Justinweb_interface
Programming
- HRP-4code_ros
- Justincode_ros
Battery & Power
Runtime
- HRP-40.4 hrs
- Justin1 hrs
Battery Swap
- HRP-4No
- Justin—
Safety
Force-Limited Arms
- HRP-4—
- JustinYes
Human Detection Method
- HRP-4vision human
- Justin—
Software
SDK Languages
- HRP-4Linux
- Justincode_ros
ROS Support
- HRP-4Yes
- Justin—
Open API
- HRP-4No
- Justin—
Reliability
Deployment Maturity
- HRP-4prototype
- Justinprototype
Commercial
Price (USD)
- HRP-4$300,000
- JustinContact for quote
Price Tier
- HRP-4150K+
- Justin—
Pricing Model
- HRP-4purchase
- Justin—
Applications
- HRP-4research
- Justinhousehold_work, space_assistance
| | |
|---|---|---|
| Layer 1: Identity & Trust | ||
| Manufacturer Country (values differ) | Japan | Germany |
| Year First Available (values differ) | 2010 | 2009 |
| Verified Deployments | 0 Deployments | 0 Deployments |
| Layer 2: Operational | ||
| Price Range (USD) (values differ) | $300,000 | Contact for quote |
| Battery / Shift Runtime (priority for Agriculture buyers) (values differ) | 0.4 hrs | 1 hrs |
| Availability Status | ACTIVE | ACTIVE |
| Layer 3: Category Specific | ||
| Physical Form Factor | ||
| Height (values differ) | 151 mm | 191 mm |
| Weight (values differ) | 39 kg | 195 kg |
| Mobility Type | bipedal | bipedal |
| Humanoid Subtype | research platform | research platform |
| Walking Speed (values differ) | 0.6 m/s | 2 m/s |
| Stair Climbing (values differ) | No | — |
| Terrain (values differ) | flat indoor | flat indoor, uneven outdoor |
| Payload & Dexterity | ||
| Payload (values differ) | 0.5 kg | 20 kg |
| Total DOF (values differ) | 34 | 51 |
| Arm DOF | 7 | 7 |
| Hand DOF (values differ) | 2 | 13 |
| Arm Reach (values differ) | — | 270 cm |
| Bimanual Coordination (values differ) | Yes | full bimanual |
| Compute & AI | ||
| Onboard Compute (values differ) | Linux kernel with RT-Preempt patch | 4x Intel Xeon Quadcore |
| Compute Platform (values differ) | Intel Pentium M (1.6 GHz) | — |
| VLM Capable (values differ) | No | — |
| Foundation Models (values differ) | false | — |
| Imitation Learning (values differ) | No | — |
| Teleoperation (values differ) | — | web_interface |
| Programming (values differ) | code_ros | code_ros |
| Battery & Power | ||
| Runtime (values differ) | 0.4 hrs | 1 hrs |
| Battery Swap (values differ) | No | — |
| Safety | ||
| Force-Limited Arms (values differ) | — | Yes |
| Human Detection Method (values differ) | vision human | — |
| Software | ||
| SDK Languages (values differ) | Linux | code_ros |
| ROS Support (values differ) | Yes | — |
| Open API (values differ) | No | — |
| Reliability | ||
| Deployment Maturity | prototype | prototype |
| Commercial | ||
| Price (USD) (values differ) | $300,000 | Contact for quote |
| Price Tier (values differ) | 150K+ | — |
| Pricing Model (values differ) | purchase | — |
| Applications (values differ) | research | household_work, space_assistance |
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, Battery Capacity, Charging Time, Charging Method, Avg Power Consumption, Fall Recovery, Fall Detection Response, Emergency Stops, 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 HRP-4 and Justin?
HRP-4 is made by Kawada Industries, based in JP. Justin is made by German Aerospace Center (DLR), based in DE.
When were HRP-4 and Justin launched?
HRP-4 launched in 2010. Justin launched in 2009.
How do HRP-4 and Justin compare on the Robolist Product Score?
HRP-4 scores 100/100. Justin scores 91/100. The Product Score blends specs, pricing transparency, verified deployments, and independent media coverage — see methodology for the full breakdown.
What is the payload difference between HRP-4 and Justin?
HRP-4 carries up to 0.5 kg. Justin carries up to 15 kg.
Are HRP-4 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 HRP-4 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
About this comparison
HRP-4 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 Robolist Product Score is calculated.