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UBTech Walker S2
Evidence: Provisional
Industrial 52-DOF humanoid (1.76 m, 15 kg payload) and the first with autonomous 3-minute battery swapping for 24/7 operation.
Price
$145,000
RAI v1.0 Autonomy Score
85/100
Where to Buy
Retailer prices with freshness shown per listingBrand Direct
Backordered
Price checked May 31, 2026
$145,000
View Deal →Specifications
Key hardware specs at a glance- Height
- 176 cm
- Payload
- 15 kg
- Degrees of Freedom
- 52
Autonomy Intelligence Profile
Robot Autonomy Index methodology →The UBTech Walker S2 scores 85/100 on the Robot Autonomy Index (RAI), RobotSniper's 0–100 measure of how little human help a robot needs across navigation, obstacle avoidance, automation, and self-maintenance. That puts it in the Highly autonomous tier — excellent everyday autonomy with a capable dock. Occasional human input, but rarely. The sweet spot for most buyers.
Evidence: Provisional
The source record does not yet include a complete evidence package. How evidence labels work
Highly autonomous
This model carries a composite RAI of 85. The four-pillar sub-score breakdown — navigation, obstacle avoidance, automation, and maintenance independence — applies to our mobile home-cleaning robots (vacuums, mowers, pool and window bots); for other categories the composite is the headline score.
See how the Robot Autonomy Index works →Independent Video Analysis
External commentary; not RobotSniper hands-on testingClosest alternatives
Same-category models with the nearest published RAI scores; evidence labels remain visible.
UBTech Walker S2 — Frequently Asked Questions
What does the UBTech Walker S2's Robot Autonomy Index (RAI) score of 85 mean?+
The Robot Autonomy Index (RAI) is RobotSniper's 0–100 rating of how little human intervention a robot truly needs, averaged across four pillars: navigation, obstacle avoidance, automation, and maintenance independence. At 85/100, the UBTech Walker S2 is highly capable, needing only occasional hands-on intervention.
Who is the UBTech Walker S2 for, and can a regular consumer buy one?+
The UBTech Walker S2 is an enterprise and industrial deployment priced around $145,000. It is currently pre-order, so you can reserve one or request a quote.
What are the key specs of the UBTech Walker S2?+
Headline specs for the UBTech Walker S2: Height (176 cm), Payload (15 kg), Degrees of Freedom (52).
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