Humanoid Robot by Unitree
Introduction
The race to build the perfect humanoid robot intensifies in 2025, and breakthroughs are coming faster than ever. From warehouse automation to AI-powered companions, today's humanoid robots are designed to walk, lift, grasp, and respond with uncanny human-like behavior. But what's often overlooked in this shiny world of artificial intelligence is the foundational layer that makes all this motion possible: precision motor engineering.
We’ll take you through the top 15 humanoid robots of 2025 and explore how frameless torque motors, like those engineered by Mosrac, are powering the next generation of lifelike movement!
The Rise of Industrial Collaborative Robots
The world of humanoid robots is no longer science fiction! With the explosion of industrial automation, personal robotics, and AI integration, the demand for humanoid robots with reliable and lifelike motion has never been higher. Companies such as Tesla, Sanctuary AI, Figure AI, and Unitree are developing bipedal robots with increasing realism and capability.
Yet, for these machines to balance, walk, lift, and emote, the underlying actuation system must deliver on torque density, thermal stability, and precision feedback. That's where innovations in frameless BLDC motors, like those from Mosrac, offer a competitive edge. These motors deliver high torque in a compact footprint—ideal for robotic joints where every millimeter and millinewton counts.
Humanoid Robot Companies
Below are 15 humanoid robots that are shaping the robotics landscape in 2025, organized by innovation, real-world deployment, and engineering excellence.
1. Tesla - Optimus Gen 2 (USA)
Tesla - Optimus Gen 2 (USA) - 2023
Optimus Gen 2 by Elon Musk is slimmer, faster, and more nimble than its predecessor. Built for factory labor, this robot features articulated fingers, smooth walking mechanics, and AI-powered navigation. Its ability to perform delicate grasping tasks suggests advanced actuator engineering, likely leveraging frameless torque motors in its joints.
Key Metrics:
✅Height: ~ 5’8” (1.73 m)
✅Weight: ~ 125 lbs (57 kg)
✅Degrees of Freedom: Enhanced joint mobility for precise manipulation
✅Primary Use: Industrial assistance and home automation
2. Boston Dynamics – Electric Atlas
Boston Dynamics – Electric Atlas
The 2025 version of Atlas has transitioned to a fully electric design, dropping hydraulics for environmentally friendly, modular electric actuators. It excels in dynamic movement—running, jumping, and backflipping—enabled by high-torque-density motors embedded in its limbs.
Key Metrics:
✔ Height: ~ 1.5 m
✔ Weight: ~ 75 kg
✔ Capabilities: Exceptional balance and agility with dynamic locomotion
✔ Primary Use: Industrial inspection, search and rescue, research
3. Unitree Robotics – G1
This low-cost humanoid robot is gaining attention for its affordability and modular design. The Unitree G1 boasts articulated knee and elbow joints with impressive range of motion, driven by compact electric motors that deliver efficient torque output in a lightweight frame.
Key Metrics:
✔ Height: ~ 1.4 m
✔ Weight: ~ 40–50 kg
✔ Battery Life: 2–3 hours of continuous operation
✔ Primary Use: Automation in logistics and service sectors
4. Agility Robotics – Digit
Digit has become the poster child for warehouse humanoid labor. With commercial deployment in logistics, its standout feature is natural walking and object handling, facilitated by direct-drive motor systems that reduce backlash and increase uptime.
Key Metrics:
✔ Height: ~ 1.2 m
✔ Weight: ~ 30 kg
✔ Battery Life: Roughly 4 hours of continuous operation
✔ Primary Use: Urban navigation and logistics applications
5. Apptronik – Apollo
Apollo was designed for both commercial and industrial spaces. With swappable battery packs, modular limbs, and 4-hour operational windows, it’s a showcase of ergonomic humanoid design. The emphasis by Apptronik on smooth joint motion and force control reflects advanced motion system integration.
Key Metrics:
✔ Height: ~ 1.7 m
✔ Weight: ~ 60 kg
✔ Battery Life: Estimated at 5 hours per charge
✔ Primary Use: Industrial automation and manufacturing support
6. NEURA Robotics – 4NE-1
Designed for social interaction and factory environments, 4NE-1 blends AI-driven perception with precision motion. Its face can express emotions, while arms and hands perform complex tasks, powered by high-resolution encoders and frameless torque motors for fluid responsiveness.
Key Metrics:
✔ Height: ~ 1.8 m
✔ Weight: 80 kg
✔ Capabilities: Cognitive processing and adaptive locomotion
✔ Primary Use: Domestic, service, and industrial tasks
7. 1X – NEO BETA
This Norwegian-designed robot focuses on safe human-robot collaboration. Its strength lies in soft material encasings and advanced actuation systems designed to mimic human muscle movement. The use of zero-backlash joints and compact motors ensures subtle control.
Key Metrics:
✔ Height: ~ 1.6 m
✔ Weight: ~ 70 kg
✔ Battery Life: Approximately 3 hours of active operation
✔ Primary Use: Industrial assembly and automation tasks
8. Figure AI – Figure 02
Figure 02 is making headlines for its advanced AI paired with real-time balancing and walking capabilities. With 7-DOF arms and nimble legs, its form suggests the use of frameless, hollow-shaft motors, allowing for internal cable routing and compact integration.
Key Metrics:
✔ Height: ~ 1.7 m
✔ Weight: ~ 60 kg (estimated)
✔ Hand Dexterity: Five-fingered hands with 16 degrees of freedom
✔ Load Capacity: Up to 25 kg
9. Sanctuary AI – Phoenix
Phoenix is a multi-purpose humanoid focused on human-equivalent capabilities. It features a full range of upper and lower limb articulation and a high payload-to-weight ratio. Motion fluidity and hand-eye coordination are standout features—indicative of advanced motor control systems.
Key Metrics:
✔ Height: ~ 1.65 m
✔ Weight: ~ 55 kg
✔ Battery Life: Approximately 4 hours per charge
✔ Ultra Feature: Advanced cognitive AI for natural human interaction
10. Engineered Arts – Ameca
Known for its expressive face and social AI, Ameca is also mechanically sophisticated. With precise neck and hand articulation, Ameca relies on small form-factor motors with high-resolution feedback loops to deliver realistic facial and limb expressions.
Key Metrics:
✔ Height: ~ 1.7 m
✔ Facial Expressions: Over 50 lifelike expressions
✔ Primary Use: Social interaction and customer service
✔ Interaction: Advanced voice and conversational AI
11. DEEP Robotics – Dr01
Originally a quadruped specialist, DEEP Robotics has transitioned into the humanoid space with Dr01. Built for disaster response, it combines a sturdy frame with agile locomotion, made possible by frameless motors that ensure durability and speed.
Key Metrics:
✔ Height: ~ 1.6 m
✔ Weight: ~ 65 kg
✔ Primary Use: Manufacturing, quality control, and industrial automation
✔ Advanced Sensors: Integrated for real-time monitoring and adjustments
12. Robot Era – STAR 1
Designed for elder care and domestic assistance, STAR 1 combines conversational AI with fine motor control. It uses multi-axis torque sensors and motorized joints to perform everything from handing over medicine to opening jars.
Key Metrics:
✔ Height: ~ 1.7 m
✔ Weight: ~ 60 kg
✔ Primary Use: Demonstrations, interactive applications, and light industrial tasks
✔ Advanced Locomotion: State-of-the-art motion planning algorithms
13. PAL Robotics – ARI 3.0
This robot is lightweight, highly expressive, and aimed at interaction in public spaces. Its arms and neck are powered by torque motors, offering fluidity and safety in interactive settings.
Key Metrics:
✔ Height: ~5’8” (1.73 m)
✔ Weight: ~125 lbs (57 kg)
✔ Degrees of Freedom: Enhanced joint mobility for precise manipulation
✔ Primary Use: Industrial assistance and home automation
14. Kawasaki – Kaleido X
Engineered for heavy lifting and rough environments, Kaleido X features robust actuators with dust and splash resistance, ideal for outdoor and industrial conditions. Motion feedback is handled by encoder-integrated torque motors.
Key Metrics:
✔ Height: ~5’8” (1.73 m)
✔ Weight: ~125 lbs (57 kg)
✔ Degrees of Freedom: Enhanced joint mobility for precise manipulation
✔ Primary Use: Industrial assistance and home automation
15. UBTECH – Walker X
Walker X is sleek, commercial, and agile. Used in home and service sectors, it integrates modular motor control units that enable dynamic walking and object interaction, while conserving energy via optimized motion planning.
Key Metrics:
✔ Height: ~5’8” (1.73 m)
✔ Weight: ~125 lbs (57 kg)
✔ Degrees of Freedom: Enhanced joint mobility for precise manipulation
✔ Primary Use: Industrial assistance and home automation
Conclusion
The most advanced AI cannot shine without a solid physical foundation. In 2025, humanoid robots are only as good as their ability to move fluidly and react intelligently—and that starts with precision motion hardware. Whether it's the flexible fingers of Optimus Gen 2 or the facial gestures of Ameca, every movement depends on torque accuracy, low inertia, and seamless feedback—all areas where frameless motor solutions excel.
If you're building the next generation of humanoid robots, Mosrac has the motion technology to bring your designs to life.
