RankedUBTECH Walker S2 vs XPENG IRON
Key facts
UBTECH Walker S2 (UBTECH Robotics; Shipping) and XPENG IRON (XPENG; Prototype) are both humanoid robots. Published for only one of them: degrees of freedom (XPENG IRON: 76); hand DOF (XPENG IRON: 21); payload (UBTECH Walker S2: 15 kg (33 lb)). Neither maker has published a price. Robot 500: UBTECH Walker S2 not ranked (fewer than 2 sourced capability figures), XPENG IRON #53 (score 61.0). Disclosure: UBTECH Walker S2 has 9 sourced values (33% of tracked fields), XPENG IRON has 13 (48%).
Cite: RankedRobot, https://rankedrobot.com/compare/ubtech-walker-s2-vs-xpeng-iron/ (checked 2026-09-24) · Every figure below links to its source · UBTECH Walker S2 spec sheet · XPENG IRON spec sheet
| Spec | UBTECH Walker S2 | XPENG IRON |
|---|---|---|
| Status | Shipping | Prototype |
| Price | Not published | Not published |
| Robot 500 | Not ranked | #53 · 61.0 |
| Launch | ||
| Announced | ||
| Status | ||
| Units deployed | ||
| Body | ||
| Height | ||
| Weight | ||
| Form factor | ||
| Materials | Not tracked | |
| IP rating | Not tracked | |
| Mobility | ||
| Max walking speed | ||
| Dexterity | ||
| Total degrees of freedom | ||
| DOF per hand | ||
| Payload | ||
| Carry payload | 15 kg (33 lb)ManufacturerSource: ubtrobot.com (2026-09-23)Conditions: within a 0-1.8 m vertical workspace, per official product page | |
| Per-arm payload | ||
| Compute & AI | ||
| Processor | ||
| AI performance | ||
| Teleoperation | ||
| Sensors | ||
| Cameras | Self-developed passive binocular (dual-camera) stereo RGB vision system with deep-learning stereo depth estimationManufacturerSource: ubtrobot.com (2026-09-23) | |
| Power | ||
| Battery | ||
| Runtime | ||
| Charge time | ||
| Hot-swappable battery | ||
| Software | ||
| SDK | ||
| Safety | ||
| Certifications | ||
| Commercial | ||
| Regions sold | ||
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 UBTECH Walker S2 and the XPENG IRON?
Published for only one of them: degrees of freedom (XPENG IRON: 76); hand DOF (XPENG IRON: 21); payload (UBTECH Walker S2: 15 kg (33 lb)). Neither maker has published a price.
Which is cheaper, the UBTECH Walker S2 or the XPENG IRON?
Neither maker has published a price. Prices are shown exactly as published, never converted or estimated.
Which ranks higher in the Robot 500, the UBTECH Walker S2 or the XPENG IRON?
Robot 500: UBTECH Walker S2 not ranked (fewer than 2 sourced capability figures), XPENG IRON #53 (score 61.0). Method: https://rankedrobot.com/robot500/#method
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