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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Kepler Forerunner K2 "Bumblebee" vs Reachy 2

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Kepler Forerunner K2 "Bumblebee" is 9 cm taller (175 vs 166 cm) and 25 kg heavier (75 vs 50 kg) than Reachy 2. Kepler Forerunner K2 "Bumblebee" has 34 more degrees of freedom (52 vs 18) and 27 kg more rated payload (30 vs 3 kg) than Reachy 2. Listed prices: Kepler Forerunner K2 "Bumblebee" $30,000, Reachy 2 $70,000. Openness score: Kepler Forerunner K2 "Bumblebee" 0, Reachy 2 45 (of 100); only Reachy 2 publishes SIM, FW and SW. Availability for both: buy.

Side-by-side specifications. Rows marked with a square differ.
FieldKepler Robotics (Shanghai Kepler Exploration Robot Co.)Kepler Forerunner K2 "Bumblebee"Pollen Robotics (Hugging Face)Pollen Reachy 2Δ first − second
Identity
Maker (differs)Kepler Robotics (Shanghai Kepler Exploration Robot Co.)Pollen Robotics (Hugging Face)
Class (differs)HumanoidWheeled humanoid
StatusActiveActive
AvailabilityBuyBuy
Country (differs)ChinaFrance
Year20242024
Specifications
Height (differs)175cm166cm+9 cm (+5%)
Mass (differs)75kg50kg+25 kg (+50%)
Degrees of freedom (differs)5218+34 (+189%)
Payload (differs)30kg3kg+27 kg (+900%)
Top speed—unsourced0.83m/s
Runtime480min—unsourced
Battery capacity (differs)2,330Wh840Wh+1,490 Wh (+177%)
Price (differs)30,000USD70,000USD−40,000 USD (-57%)
Actuators (differs)Hybrid roller-screw linear + rotary actuatorsOrbita parallel joints (neck, wrists)
Compute (differs)100 TOPS onboardSolidRun BedRock V3000 industrial PC
Sensors (differs)80+ integrated sensors; tactile dexterous hands2x IMX296 RGB, Orbbec Gemini 336 RGB-D, ToF, RPLIDAR S2, IMU, microphones
Openness and provenance
Openness bar045
Openness score (differs)0/ 10045/ 100−45
CAD (25)not publicnot public
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
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Best-documented pairs

most sourced fields on both sides