UBTECH Walker S2

$246,600 (reseller)

AvailableRL walkingSwaps its own batteryFactory deploymentsMass production

Weeks+Shipping: Not available.

LEARN MORE (Official) ↗

Overview

UBTECH's industrial humanoid, launched July 2025, is known for autonomously swapping its own battery in about three minutes to run around the clock. It entered mass production in late 2025 with more than ~$120 million (¥800 million) in orders from carmakers and data-collection centers. Sold to enterprises only.

Type: Biped robot · Full-size humanoids
Maker: UBTECH (China)
Released: 2025
Price: $246,600 (reseller)
Status: Available
Best for: Professionals & labs
Programming: Limited SDK

Price and shipping

RobotShop lists the Walker S2 at $246,600 (RobotShop US, September 2026). UBTECH publishes no list price. Media reports and filings earlier cited about $90k–160k.

Shipping: Not available. Enterprise sales in China. No public US ordering.

Specifications

Category	Bipeds · Full-size humanoids
Released	2025
Country	China
Availability	Available
Sales	1,079 full-size Walker S-series humanoids sold in 2025 (estimate) Humanoid.guide ↗
Programmability	Limited SDK
Built-in autonomy	Task-level · Carries out multi-step jobs on its own, such as inspections, deliveries or chores
LLM support	LLM plans actions · UBTECH's Co-Agent system uses large models to understand task intent, plan steps, use tools and handle exceptions on the factory floor. UBTECH Walker S2 ↗
MuJoCo simulation	Maker URDF only · UBTECH publishes a Walker S2 URDF, with nothing packaged for MuJoCo. WalkerS2-Model ↗
NVIDIA Isaac simulation	Official model · UBTECH publishes a Walker S2 USD model for Isaac Sim. WalkerS2-Model ↗
Gazebo simulation	Maker URDF only · UBTECH publishes a Walker S2 URDF, with no Gazebo package. WalkerS2-Model ↗
Best for	Professionals & labs
Vision sensors	Camera, Depth camera
Actuators	Brushless / direct-drive motors
Audio	Unknown
Compute type	Proprietary / undisclosed
Balance type	RL walking
Height	~176 cm
Weight	~70 kg with battery
Compute	Not published
Speed	Up to 2.0 m/s walking
DOF	52
Sensors	Pure RGB binocular stereo cameras in the head, with learned stereo depth estimation
Balance	Dynamic whole-body balance. UBTECH describes a whole-body human-like dynamic balancing algorithm that holds a 15 kg payload while bending 125°. The split between learned and model-based control is not published.
SDK	Enterprise integration only

Common questions

How much does Walker S2 cost?

Walker S2 is listed at $246,600 (reseller). RobotShop lists the Walker S2 at $246,600 (RobotShop US, September 2026). UBTECH publishes no list price. Media reports and filings earlier cited about $90k–160k.

Can Walker S2 be bought today?

Yes, it is on sale. Enterprise sales in China. No public US ordering.

Who makes Walker S2?

Walker S2 is made by UBTECH (China). It came out in 2025.

Can Walker S2 be programmed?

Limited SDK. Enterprise integration only.

Does Walker S2 have AI chat or LLM support?

LLM plans actions. UBTECH's Co-Agent system uses large models to understand task intent, plan steps, use tools and handle exceptions on the factory floor.