humanoidrobots.systems

Kepler Forerunner K2 "Bumblebee" vs Menlo Asimov 1

Generated from the registry · revision 2026-09-26 · openness out of 100

Kepler Forerunner K2 "Bumblebee" is 55 cm taller (175 vs 120 cm) and 40 kg heavier (75 vs 35 kg) than Asimov 1. Kepler Forerunner K2 "Bumblebee" has 27 more degrees of freedom (52 vs 25) than Asimov 1. Listed prices: Kepler Forerunner K2 "Bumblebee" $30,000, Asimov 1 $20,000. Openness score: Kepler Forerunner K2 "Bumblebee" 0, Asimov 1 70 (of 100); only Asimov 1 publishes CAD, SIM, FW and SW. Availability: Kepler Forerunner K2 "Bumblebee" buy, Asimov 1 kit.

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Side by side

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FieldKepler Robotics (Shanghai Kepler Exploration Robot Co.)Kepler Forerunner K2 "Bumblebee"Menlo Research (Asimov)Menlo Asimov 1Δ first − second
Identity
Maker (differs)Kepler Robotics (Shanghai Kepler Exploration Robot Co.)Menlo Research (Asimov)
ClassHumanoidHumanoid
StatusActiveActive
Availability (differs)BuyKit
Country (differs)ChinaSingapore
Year (differs)20242026
Specifications
Height (differs)175cm120cm+55 cm (+46%)
Mass (differs)75kg35kg+40 kg (+114%)
Degrees of freedom (differs)5225+27 (+108%)
Payload30kg—unsourced
Top speed—unsourced—unsourced
Runtime480min—unsourced
Battery capacity2,330Wh—unsourced
Price (differs)30,000USD20,000USD+10,000 USD (+50%)
Actuators (differs)Hybrid roller-screw linear + rotary actuatorsCAN-bus actuators; 6 DOF/leg, 5 DOF/arm, 1 waist, 2 neck; RSU ankle with passive toes
Compute (differs)100 TOPS onboardRaspberry Pi 5 (media/network) + Radxa CM5 (motion control)
Sensors (differs)80+ integrated sensors; tactile dexterous hands2MP monocular camera, stereo mic array, 6-DOF IMU, joint states
Openness and provenance
Openness bar070
Openness score (differs)0/ 10070/ 100−70
CAD (25) (differs)not publicpublic
Bill of materials (20)not publicnot public
Sim model (URDF/MJCF) (20) (differs)not publicpublic
Firmware (15) (differs)not publicpublic
Software (10) (differs)not publicpublic
Trained policies (10)not publicnot public
Verification level (differs)L0L1
Sources (differs)23
Last checked2026-09-242026-09-24

A dash is an unsourced figure, not zero. Sources for each robot are listed on its spec sheet: Kepler Forerunner K2 "Bumblebee", Asimov 1.

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