Kepler K2 Bumblebee vs MenteeBot V3

Kepler K2 Bumblebee is a commercial industrial humanoid from Shanghai. It is 175 cm, 75 kg, 52 DoF, with 11-DoF hands, a hybrid roller-screw/rotary actuator design, 100 TOPS compute, and a claimed 30 kg dual-arm payload and 8-hour runtime on a one-hour charge. Kepler lists a $30,000 base price or RMB 248,000 and announced mass production and shipments in September 2025. The most concrete positive evidence is a company-described gait video showing the robot walking over bricks, plastic and grass and remaining stable under pushes. Commercial proof is limited: confirmed orders of over 47 million yuan are reported, and an official video title suggests a Zhaofeng Motor on-the-job log, but 2025 revenue was only 4.34 million yuan with heavy losses and the company was acquired at a lower valuation. Autonomy, endurance and manipulation claims are mostly company statements without independent verification; many demo videos are title-only with no teleoperation disclosure

MenteeBot V3 has stronger source-backed evidence than the previous weak pack: official specs list a 175 cm, 70 kg, 40-DoF biped with 25 kg carry capacity and 1.5 m/s speed, and Mentee/CTech report a two-robot autonomous warehouse demo moving 32 boxes in an 18-minute unedited run. Still score conservatively: there is no named customer deployment, independent benchmark, intervention-rate data, price, or public purchase path, and Mobileye's SEC filing explicitly cautions that humanoid commercialization remains uncertain