Apollo vs Walker S2: Specs, Price & ROS Support Compared (2025)
Apptronik vs UBTECH Robotics — independent, side-by-side analysis.
Quick Verdict
Apollo leads in higher payload. Overall, Apollo has an edge in 1 out of 1 compared categories.
Apollo
Apptronik
Walker S2
UBTECH Robotics
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Apollo Walker S2
Specifications
Target <$50,000 at scalePrice$90,000
173 cmHeight176 cm
72.6 kgWeight73 kg
—DOF52
25 kgPayload15 kg
4hRuntime—
—Speed2 m/s
YesStairsYes
NoLiDARNo
Google DeepMind Gemini integrationComputeN/A
Pros and cons at a glance
Apollo
Pros
- High rated payload (25 kg) for industrial pick-and-place
Cons
- Still in development, no commercial availability
- Unit price not publicly disclosed (quote-on-request or enterprise-only)
- Closed software stack — no public SDK or ROS support
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
Frequently asked questions
How do Apollo and Walker S2 compare on price?
Apollo: Target <$50,000 at scale. Walker S2: $90,000. Only one of the two has a public unit price; the other publishes a range or enterprise-only terms.
Which has higher payload: Apollo or Walker S2?
Apollo rates a higher payload at 25 kg vs 15 kg. Payload ratings are vendor claims and do not always include a duty cycle — peak vs sustained payload can differ significantly.
Is Apollo or Walker S2 actually available to buy?
Apollo is in active development without commercial availability. Walker S2 is shipping to customers. Status reflects the vendor's published commercial position as of the last review and can change between announcement and actual delivery.
Last updated: 2025