Compare · head to head

Tesla Optimus Gen 2 (V2/V2.5) vs UBTECH Walker S2

Data confidence: medium / medium · reviewed by Andrei Sheshenin · how we score

UBTECH Walker S2 ranks higher overall (55 vs 45, a 10-point gap). UBTECH Walker S2 is ahead in deployment; they score the same in locomotion, manipulation, hands, autonomy. Tesla Optimus Gen 2 (V2/V2.5) is cheaper: about $25,000 vs $84,507.

#16

45score

Tesla Optimus Gen 2 (V2/V2.5)

Tesla · USA · Walks on legs

Height173 cm

Weight57 kg

Joints28

Lifts20 kg

Speed?

Battery?

Price$25k reported

Prototype

55score

UBTECH Walker S2

UBTECH · China · Walks on legs

Height176 cm

Weight70 kg

Joints52

Lifts15 kg

Speed7.2 km/h

Battery2 h

Price$85k-$99k reported

On sale

Tesla Optimus Gen 2 (V2/V2.5)		UBTECH Walker S2
Body
173 cm	Height	176 cm
57 kg	Weight	70 kg
Legs	Moves on	Legs
28	Joints (degrees of freedom)	52
Tesla-designed rotary and linear actuators with integrated electronics	Actuators	Self-developed joints; waist +90/-35 deg pitch, +/-162 deg rotation
Movement
?	Top speed	7.2 km/h
Hands and lifting
11	Joints per hand	11
5	Fingers	5
20 kg	Carries (both arms)	15 kg
Battery
?	Runtime per charge	2 h
Not disclosed	Charging	Autonomous hot battery swapping, 24/7 operation
Brain and senses
in-house end-to-end neural networks (FSD stack)	AI model	BrainNet 2.0 with Co-Agent
Tesla FSD computer	Onboard computer	Not disclosed
vision cameras; foot force/torque; fingertip tactile sensors	Sensors	Binocular stereo vision
Buying it
$25k reported	Price	$85k-$99k reported
Musk target price 20,000-30,000 USD at scale; no official price, not on sale	Price details	Media report 600,000-700,000 RMB per unit. RobotShop special order 246,600 USD. 2025 revenue/units implies ~761,000 RMB average. Runtime ~2 h walking per one source.
Internal Tesla use only; not for sale	Availability	Mass production and delivery since 11.2025
Prototype	Status	On sale
Not disclosed	Units shipped	~1079 Walker S series (2025)
Tesla (internal)	Customers	BYD, Geely, FAW-VW, Dongfeng, Foxconn, Airbus, data collection centers (Jiujiang, Guangxi)
battery cell sorting at Tesla factory; demos	Used for	Automotive and electronics factory logistics, sorting, quality inspection, training data collection
What it has shown (our assessment)
Handles stairs and uneven ground	Locomotion	Handles stairs and uneven ground
Two-handed work in real settings	Manipulation	Two-handed work in real settings
Hand with 6-11 joints	Hands	Hand with 6-11 joints
Learned AI policies in demos	Autonomy	Learned AI policies in demos
Sold to labs, a few units	Deployment	100+ robots at customers

Watch them

Tesla Optimus Gen 2 (V2/V2.5): Optimus - Gen 2 | Tesla — Optimus - Gen 2 | Tesla · Tesla on YouTube

UBTECH Walker S2: Walker S2 - The World's First Humanoid Robot Capable of Autonomous Battery Swapping — Walker S2 - The World's First Humanoid Robot Capable of Autonomous Battery Swapping · UBTECH Robotics on YouTube

What each has shown

Tesla Optimus Gen 2 (V2/V2.5): sorting battery cells at a factory, everyday tasks in video, walking on uneven ground

UBTECH Walker S2: Autonomous battery replacement in 3 minutes, carrying boxes in automotive factories

FAQ

Which ranks higher, Tesla Optimus Gen 2 (V2/V2.5) or UBTECH Walker S2?

UBTECH Walker S2 ranks higher overall (55 vs 45, a 10-point gap).

Can you buy Tesla Optimus Gen 2 (V2/V2.5) or UBTECH Walker S2?

Tesla Optimus Gen 2 (V2/V2.5): prototype. UBTECH Walker S2: on sale.

Which costs less, Tesla Optimus Gen 2 (V2/V2.5) or UBTECH Walker S2?

Tesla Optimus Gen 2 (V2/V2.5) about $25,000; UBTECH Walker S2 about $84,507.

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