EngineAI T800 vs Kepler K2 Bumblebee

EngineAI T800 is a full-size bipedal humanoid (1.73 m, 75 kg official) with 29 body DoF excluding dexterous hand, 450 N·m peak joint torque, and a claimed 4-5 hour solid-state battery runtime. It launched on 2025-12-02 from 180,000 yuan with four versions and was demonstrated at CES 2026. In May 2026, EngineAI announced mass production with first batch delivery and a 10,000-unit scalable capability. However, all strong evidence is company-reported. No named customer deployment, autonomous task execution, or independent verification was found. addoobot lists conflicting specs (84.5 kg, 2 h runtime, 1.22 kWh ternary battery) that lower confidence in endurance

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