ergoCub vs Kepler K2 Bumblebee

ergoCub is IIT and INAIL's research humanoid, standing 150 cm tall, weighing 55.7 kg, and designed to reduce physical strain on workers in industrial and hospital settings. Its strongest evidence is a peer-reviewed Nature Machine Intelligence figure showing collaborative payload lifting with a human and live walking on stage. Official IIT sources confirm the 2023 debut and ergonomic purpose, while secondary dossiers report about 10 kg load-bearing, NVIDIA Jetson AGX Xavier plus Intel i7 onboard compute, depth/LiDAR sensing, and research claims such as up to 43% energy reduction and DNN-driven locomotion. However, no battery, runtime, walking speed, total DoF, hand DoF, price, or customer deployment exists in the reviewed evidence; autonomy is mostly simulation-only or title-only

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