Sanctuary AI Phoenix vs UBTech Walker S2 (2026): price, specs & which to choose

By the numbers

Key figures, side by side

Bars are scaled to the larger value. Bigger is not always better.

Height

Sanctuary AI Phoenix170 cm

UBTech Walker S2176 cm

Payload

Sanctuary AI Phoenix25 kg

UBTech Walker S215 kg

Use cases

What do you need it for?

Pick a job to see which robot fits.

Job	Sanctuary AI Phoenix	UBTech Walker S2
Best for	—	—
Factory work	PromisedMagna auto-parts plantsSanctuary and Magna agreed in 2024 to deploy its robots in Magna factories, with Magna also contract-manufacturing Phoenix.	Works todayAutomotive assembly plantsUBTech lists BYD, Geely, Dongfeng Liuzhou, FAW-Volkswagen Qingdao, Audi FAW and BAIC as Walker customers, and orders exceed ¥800 million.
Warehouse & logistics	No claim from the maker	Works todayLogisticsSF Express and Foxconn are named Walker-series customers for intelligent logistics and smart-factory work.
Shops, events & public spaces	Demo onlyRetail store pilotPhoenix's first commercial deployment was at Canadian Tire-owned retailers Mark's and Sport Chek in 2023.	No claim from the maker

Height lineup · to scale

Standing side by side

Tap a name to add or remove it. Dashed figure: a 175 cm person.

200 cm

150 cm

100 cm

50 cm

Person175 cm

UBTech Walker S2176 cm

Sanctuary AI Phoenix170 cm

Official videos

Watch them move

UBTech Walker S2

Walker S2 - The World's First Humanoid Robot Capable of Autonomous Battery SwappingOfficial video · UBTECH Robotics · Jul 2025 · Watch on YouTube

Spec sheet

Full comparison

Only show differences

Spec	Sanctuary AI Phoenix	UBTech Walker S2
Buying
Price	TBA Not announced	$243,275 Listed at $243,275 (incl. US tariffs) by retailer RobotShop as an on-demand item; no official factory price published
Status	Prototype	In production
Launch	TBA No commercial launch date	Nov 2025 Mass production and deliveries started
Brand	Sanctuary AI	UBTech Robotics
Specifications
Height	170 cm (2023 generation)	176 cm
Weight	70 kg (2023 generation)	—
Degrees of freedom	—	52
Hands	Hydraulic dexterous hands; 20 degrees of freedom reported for the 2023 generation	Dexterous hands with 11 DOF each
Payload	25 kg (2023 generation)	15 kg
Runtime	—	About 2 hours per battery
Speed	4.8 km/h (2023 generation)	2.0 m/s
AI system	Carbon	—
Compute	—	Intel Core i7 + NVIDIA Jetson AGX Orin
Battery	—	Autonomous swap in about 3 minutes; 48 V LiFePO4
Track record
Latest milestone	Feb 2025: Sanctuary showed its 8th-generation Phoenix, built for higher-quality data capture, with new tactile sensors on the hands.	On 2025-11-17 UBTech said mass production and delivery of the first several hundred units had begun, with Walker-series orders above ¥800 million.

"—" means the maker has not published that figure. Sources are listed on each robot's page. Spotted an error? Tell us and we'll fix it.

Quick answers

Sanctuary AI Phoenix vs UBTech Walker S2: common questions

Which is better, Sanctuary AI Phoenix or UBTech Walker S2?

It depends on the job. Based on what each robot does today: UBTech Walker S2 for factory work, UBTech Walker S2 for warehouse & logistics and Sanctuary AI Phoenix for shops, events & public spaces.

Which one is cheaper?

The UBTech Walker S2 costs $243,275. The Sanctuary AI Phoenix has no official price.

Which one can you buy now?

None of them is on sale to the public yet. Sanctuary AI Phoenix: prototype. UBTech Walker S2: in production.

Which one is taller?

The UBTech Walker S2 (176 cm). Sanctuary AI Phoenix: 170 cm.

Which one can carry more?

The Sanctuary AI Phoenix (25 kg). UBTech Walker S2: 15 kg.