Humanoid & robot atlas

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KeiganGPR vs GRW vs K3W 'Big Hornet'

Price, size, speed, payload, battery and joints for 3 humanoids, from published figures. Green marks the best published value.

Statistics only, not advice. No affiliation, sponsorship or endorsement. How we work · Terms

MeasureNo public photo yetWe only show photos we're allowed to useKeiganGPRGRWGRWK3W 'Big Hornet'K3W 'Big Hornet'
MakerKeigan Inc.FourierKepler Exploration Robotics
CountryJapanChinaChina
StatusPrototypePrototypePrototype
First shown2026-09-162026-07-172026
Released———
Price———
Height—165 cm—
Weight—160 kg120 kg
Top speed———
Payload—16 kg30 kg best
Battery—4 h8 h best
Joints (DoF)232943 best
Moves onWheelsWheelsWheels
Handssimpleunknownunknown
Built forgeneral-purpose, industrial, logisticslogistics, industrial, careindustrial, logistics, research, education
Units built or soldPrototype for the AIRoA/NEDO competition, built from March 2026 · not sold; Keigan plans to commercialise…——

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

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

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.