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Unitree B2 vs Unitree B2-W

Key facts

Unitree B2 (Unitree Robotics; Shipping) and Unitree B2-W (Unitree Robotics; Shipping) are both quadruped robot (robot dog)s. Published figures: weight 60 kg (132 lb) vs 85 kg (187 lb); speed 6 m/s (21.6 km/h · 13.4 mph) vs 4.17 m/s (15 km/h · 9.3 mph); payload 40 kg (88 lb) vs 40 kg (88 lb). Published for only one of them: runtime (Unitree B2: 4 h–6 h). Price: Unitree B2 US$100,000, Official store (global) (official price); Unitree B2-W US$100,000, Official store (global) (official price). Robot 500: Unitree B2 #3 (score 73.3), Unitree B2-W #27 (score 64.5). Disclosure: Unitree B2 has 21 sourced values (81% of tracked fields), Unitree B2-W has 17 (65%).

Cite: RankedRobot, https://rankedrobot.com/compare/unitree-b2-vs-unitree-b2-w/ (checked 2026-09-25) · Every figure below links to its source · Unitree B2 spec sheet · Unitree B2-W spec sheet

SpecUnitree B2Unitree B2-W
StatusShippingShipping
Price
US$100,000, Official store (global) (official price) source
US$100,000, Official store (global) (official price) source
Robot 500#3 · 73.3#27 · 64.5
Launch
Announced
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Status
ShippingManufacturerSource: shop.unitree.com (2026-09-25)
ShippingManufacturerSource: shop.unitree.com (2026-09-25)
Body
Dimensions
Length 1,098 mm × Width 450 mm × Height 645 mmManufacturerSource: unitree.com (2026-09-25)
Length 1,098 mm × Width 550 mm × Height 758 mmManufacturerSource: unitree.com (2026-09-25)
Weight
60 kg (132 lb)ManufacturerSource: unitree.com (2026-09-25)
85 kg (187 lb)ManufacturerSource: unitree.com (2026-09-25)
Form factor
QuadrupedManufacturerSource: unitree.com (2026-09-25)
wheeled-legged quadrupedManufacturerSource: unitree.com (2026-09-25)
IP rating
IP67ManufacturerSource: unitree.com (2026-09-25)
IP67ManufacturerSource: unitree.com (2026-09-25)
Mobility
Max speed
6 m/s (21.6 km/h · 13.4 mph)ManufacturerSource: unitree.com (2026-09-25)Conditions: sustained speed as stated
4.17 m/s (15 km/h · 9.3 mph)ManufacturerSource: unitree.com (2026-09-25)Conditions: sustained speed as stated (wheeled mode)
Stairs
Stairs of 20-25cm; obstacle crossing up to 40cm; climb angle >45 degManufacturerSource: unitree.com (2026-09-25)
Stairs of 20-25cm continuous; 40cm forward obstacle; climb angle >45 degManufacturerSource: unitree.com (2026-09-25)
Joints & payload
Degrees of freedom
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Payload
40 kg (88 lb)ManufacturerSource: unitree.com (2026-09-25)Conditions: continuous walking load
40 kg (88 lb)ManufacturerSource: unitree.com (2026-09-25)Conditions: continuous walking load
Peak load
120 kg (265 lb)ManufacturerSource: unitree.com (2026-09-25)Conditions: standing load
120 kg (265 lb)ManufacturerSource: unitree.com (2026-09-25)Conditions: standing load
Compute & AI
Processor
Intel Core i5/i7 or NVIDIA Jetson Orin NX (configurable)ManufacturerSource: unitree.com (2026-09-25)
Intel Core i5 (standard) / i7 (dev) or NVIDIA Jetson Orin NX (configurable)ManufacturerSource: unitree.com (2026-09-25)
AI performance
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Teleoperation
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Sensors
Cameras
Depth camera x2 + optical camera x2ManufacturerSource: unitree.com (2026-09-25)
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
LiDAR
3D LiDAR x1ManufacturerSource: unitree.com (2026-09-25)
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Power
Battery
2,250 WhManufacturerSource: unitree.com (2026-09-25)
2,000 WhManufacturerSource: unitree.com (2026-09-25)
Runtime
4 h–6 hManufacturerSource: unitree.com (2026-09-25)Conditions: task not stated by manufacturer
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Hot-swappable battery
YesManufacturerSource: unitree.com (2026-09-25)
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Software
SDK
Unitree SDK2 (unitree_sdk2, C++/Python) with ROS2 support (unitree_ros2)ManufacturerSource: support.unitree.com (2026-09-25)
Unitree SDK2 (unitree_sdk2, C++/Python) with ROS2 support (unitree_ros2)ManufacturerSource: support.unitree.com (2026-09-25)
Commercial
Regions sold
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)
Not disclosedNot disclosedChecked: unitree.com (2026-09-25)

Confidence labels: Manufacturer = stated by the maker · Verified = independently confirmed · Reported = credible media or retailer, not confirmed by the maker · ⚠ Unconfirmed = leak or single source · Not disclosed = not published. We never estimate missing figures. Add more robots to this comparison.

Quick answers

What is the difference between the Unitree B2 and the Unitree B2-W?

Published figures: weight 60 kg (132 lb) vs 85 kg (187 lb); speed 6 m/s (21.6 km/h · 13.4 mph) vs 4.17 m/s (15 km/h · 9.3 mph); payload 40 kg (88 lb) vs 40 kg (88 lb). Published for only one of them: runtime (Unitree B2: 4 h–6 h).

Which is cheaper, the Unitree B2 or the Unitree B2-W?

Price: Unitree B2 US$100,000, Official store (global) (official price); Unitree B2-W US$100,000, Official store (global) (official price). Prices are shown exactly as published, never converted or estimated.

Which ranks higher in the Robot 500, the Unitree B2 or the Unitree B2-W?

Robot 500: Unitree B2 #3 (score 73.3), Unitree B2-W #27 (score 64.5). Method: https://rankedrobot.com/robot500/#method

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