humanoidrobots.systems

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Pick two to four robots. Every pair also has its own permanent page, 1,326 in total, generated from the same records.

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Berkeley Humanoid vs Kepler Forerunner K2 "Bumblebee"

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Berkeley Humanoid is 90 cm shorter (85 vs 175 cm) and 59 kg lighter (16 vs 75 kg) than Kepler Forerunner K2 "Bumblebee". Berkeley Humanoid has 40 fewer degrees of freedom (12 vs 52) than Kepler Forerunner K2 "Bumblebee". Kepler Forerunner K2 "Bumblebee" lists at $30,000; Berkeley Humanoid is not for sale. Openness score: Berkeley Humanoid 30, Kepler Forerunner K2 "Bumblebee" 0 (of 100); only Berkeley Humanoid publishes SIM and SW. Availability: Berkeley Humanoid research only, Kepler Forerunner K2 "Bumblebee" buy.

Side-by-side specifications. Rows marked with a square differ.
FieldUC Berkeley Hybrid Robotics LabUC Berkeley HumanoidKepler Robotics (Shanghai Kepler Exploration Robot Co.)Kepler Forerunner K2 "Bumblebee"Δ first − second
Identity
Maker (differs)UC Berkeley Hybrid Robotics LabKepler Robotics (Shanghai Kepler Exploration Robot Co.)
Class (differs)BipedHumanoid
Status (differs)ResearchActive
Availability (differs)Research onlyBuy
Country (differs)United StatesChina
Year20242024
Specifications
Height (differs)85cm175cm−90 cm (-51%)
Mass (differs)16kg75kg−59 kg (-79%)
Degrees of freedom (differs)1252−40 (-77%)
Payload—unsourced30kg
Top speed—unsourced—unsourced
Runtime—unsourced480min
Battery capacity—unsourced2,330Wh
Price (differs)Not for sale30,000USD
Actuators (differs)custom 5013/8513/8518/10413 motors, 9:1 planetary, EtherCATHybrid roller-screw linear + rotary actuators
Compute (differs)Intel i7-1255U onboard PC100 TOPS onboard
Sensors (differs)IMU, joint encoders80+ integrated sensors; tactile dexterous hands
Openness and provenance
Openness bar300
Openness score (differs)30/ 1000/ 100+30
CAD (25)not publicnot public
Bill of materials (20)not publicnot public
Sim model (URDF/MJCF) (20) (differs)publicnot public
Firmware (15)not publicnot public
Software (10) (differs)publicnot public
Trained policies (10)not publicnot public
Verification level (differs)L2L0
Sources (differs)32
Last checked2026-09-242026-09-24
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