Rollin' Justin vs HERB (Home Exploring Robot Butler) vs Justina

Measure	Rollin' Justin	HERB (Home Exploring Robot Butler)	Justina
Maker	German Aerospace Center (DLR)	Carnegie Mellon University (later University of Washington), Siddhartha Srinivasa lab	UNAM Bio-Robotics Laboratory, School of Engineering (team Pumas, Jesus Savage)
Country	Germany	United States	Mexico
Status	Research	Research	Research
First shown	2008-06	2006	2006
Released	—	—	—
Price	—	—	—
Height	191 cm	—	—
Weight	200 kg	—	—
Top speed	7.2 km/h	—	—
Payload	20 kg	—	—
Battery	1 h	—	—
Joints (DoF)	51	—	—
Moves on	Wheels	Wheels	Wheels
Hands	dexterous	dexterous	simple
Built for	research, space, home	research, home	research, home
Units built or sold	Research unit; count not published	1 evolving platform (Busboy 2006, HERB 1.0 2008, HERB 2.0 2010) · Not sold; research robot	—

Figures are what makers or the press published; “—” means not published. Each robot's profile links to its sources.

Popular comparisons

Well-known robots paired only when they move the same way, are at the same stage and share a main job. How we choose

• Digit 5 vs Optimus Gen 2
• Optimus Gen 2 vs IRON (next generation)
• Atlas (product version) vs Figure 03
• Apollo 2 vs Figure 03
• NEO (home robot) vs Figure 03
• Apollo 2 vs Atlas (product version)
• Digit 5 vs IRON (next generation)
• Unitree Dual-Arm Humanoid (R1-A5 / R1-A7 / R1-A5-D / R1-A7-D) vs D1
• Feather vs Unitree Dual-Arm Humanoid (R1-A5 / R1-A7 / R1-A5-D / R1-A7-D)
• AI Worker vs Unitree Dual-Arm Humanoid (R1-A5 / R1-A7 / R1-A5-D / R1-A7-D)
• Galbot S1 vs Unitree Dual-Arm Humanoid (R1-A5 / R1-A7 / R1-A5-D / R1-A7-D)
• MagicBot D1 vs Unitree Dual-Arm Humanoid (R1-A5 / R1-A7 / R1-A5-D / R1-A7-D)

How comparisons are chosen

Every robot page, the suggestions above and the popular list follow the same rules, so a comparison is never a random pick. You can still compare any two robots yourself with the menus at the top.

1. Like with like. Humanoids are compared with humanoids, and a machine only with its own type: a robot dog with robot dogs.
2. Another maker. A maker’s own models are listed on its page instead.
3. Moves the same way. Walking robots with walking robots, wheeled with wheeled, fixed upper bodies with fixed upper bodies.
4. Same stage. Robots on sale or in pilots with each other; prototypes with prototypes; research platforms with research platforms; past robots with robots of their time.
5. A shared main job. At least one job in common, such as factory work, retail or care. Broad labels like research, education or general-purpose only count when a robot has nothing more specific.
6. Close in time, size and price. First shown within two years, in the same size class (full size from 150 cm, mid size 100 to 149 cm, small under 100 cm) and priced within three times of each other when both prices are published. If fewer than two robots pass, these three are relaxed and the page says the matches are the nearest ones.

Under each peer’s name, the page lists which of these it shares. Closer size and price, and more jobs in common, put a robot higher in the list.