SAO2

The EngineAI SAO2 (also referred to as SA02) represents a groundbreaking entry in the consumer humanoid robotics market, designed specifically as an ultra-lightweight companion robot targeted at young people and first-time owners. Previewed at the 2025 World Robot Conference in Beijing, this pint-sized humanoid stands at approximately 1.25 meters tall and weighs just 25 kg, making it one of the lightest full-body humanoids available. Its anime-inspired aesthetic, featuring a softly lit expressive face and compact frame, is engineered to evoke friendliness and approachability, fitting seamlessly into living rooms, dorms, or small apartments without dominating space. Architecturally, the SAO2 boasts 28 degrees of freedom (26 powered joints plus 2 articulated fingers), enabling nuanced gestures such as waving, pointing, dancing, and expressive hand movements. It employs advanced harmonic joint modules and harmonic gears for precise, low-backlash motion, constructed primarily from lightweight aluminum for durability and portability. The robot's mobility includes a maximum speed of 7.2 km/h, with manipulation and navigation performance rated at 3/5, suitable for indoor environments and basic interactions. Safety is prioritized with human-safe design protocols, IP20 ingress protection, and low-latency response times under 100 ms from perception to action. At its core is a powerful on-device computing stack powered by NVIDIA and Intel dual-core processors running on a Linux operating system. This setup supports dual 1080p HD cameras for real-time face recognition, object detection, and tracking, integrated with Bluetooth and WiFi connectivity. A standout feature is the embedded large language model (LLM) integration, allowing cloud-independent conversations that adapt to user mood, context, and preferences. The LLM enables the SAO2 to assist with homework, engage in casual banter, remember routines, and even host karaoke sessions via high-fidelity speakers—all with minimal latency, enhancing privacy and responsiveness. The robot's strength rating of 5 kg supports light object handling, while a 4-hour runtime per charge underscores its practicality for daily use. EngineAI's harmonic drive technology, self-developed motors, and optimized thermal management ensure reliable performance. Although specific battery details like kWh or voltage are not publicly disclosed, the design emphasizes energy efficiency for extended interactions. As of late 2025, the SAO2 remains in pre-launch phase with a starting price of around $5,300 (¥38,500), positioning it as 'Everyone's First Humanoid Robot' or 'Top Player' for youth. Real-world deployments are limited to demos at events like the WRC 2025, with no widespread commercial history yet. However, its architecture builds on EngineAI's proven platforms like SE01 and PM01, promising scalability for education, companionship, and light assistance roles. Future updates may include enhanced LLM models (potentially fine-tuned variants of open-source like LLaMA) and expanded sensor suites, heralding accessible embodied AI for homes.