Walker S2 vs Astribot S1: Specs, Price & ROS Support Compared (2025)
UBTECH Robotics vs Stardust Intelligence — independent, side-by-side analysis.
Quick Verdict
Walker S2 leads in more DOF, higher payload. Overall, Walker S2 has an edge in 2 out of 2 compared categories.
Walker S2
UBTECH Robotics
Astribot S1
Stardust Intelligence
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Walker S2 Astribot S1
Specifications
$90,000PriceQuote-only (B2B); official site lists no price. Chinese reports cite ~CNY 500,000 (~$69,000) for the research edition; third-party estimates $96,000–$150,000. Volume shipments in China since late 2025
176 cmHeight170 cm
73 kgWeight80 kg
52DOF23
15 kgPayload5 kg
—Runtime5h
2 m/sSpeed—
YesStairs—
NoLiDARYes
N/AComputeLinux-based
Pros and cons at a glance
Walker S2
Pros
- Shipping to customers (verified commercial availability)
- 52 degrees of freedom — full-body articulation
Cons
- Closed software stack — no public SDK or ROS support
Astribot S1
Pros
- Shipping to customers (verified commercial availability)
- Ships with LiDAR for robust depth sensing in low-light environments
Cons
- Unit price not publicly disclosed (quote-on-request or enterprise-only)
- Low rated payload (5 kg) — research or light-handling tasks only
Frequently asked questions
How do Walker S2 and Astribot S1 compare on price?
Walker S2: $90,000. Astribot S1: Quote-only (B2B); official site lists no price. Chinese reports cite ~CNY 500,000 (~$69,000) for the research edition; third-party estimates $96,000–$150,000. Volume shipments in China since late 2025. Only one of the two has a public unit price; the other publishes a range or enterprise-only terms.
Which has higher payload: Walker S2 or Astribot S1?
Walker S2 rates a higher payload at 15 kg vs 5 kg. Payload ratings are vendor claims and do not always include a duty cycle — peak vs sustained payload can differ significantly.
Are both Walker S2 and Astribot S1 shipping to customers?
Yes. Both are commercially available as of the last review. Delivery timelines and customer geographies vary per vendor — check the manufacturer page for each.
Which is better for ROS-based development: Walker S2 or Astribot S1?
Walker S2 has no ROS support; Astribot S1 has ros2. For research and multi-vendor robotics stacks, native ROS 2 is the strongest signal of ecosystem maturity.
Does Walker S2 or Astribot S1 use LiDAR?
Astribot S1 ships with LiDAR for depth sensing; Walker S2 does not. LiDAR adds cost and complexity but improves obstacle detection in low-light or low-contrast environments.
Last updated: 2025
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