Walker S vs Sophia: Specs, Price & ROS Support Compared (2023)

Name: Sophia
Brand: Hanson Robotics

UBTECH Robotics vs Hanson Robotics — independent, side-by-side analysis.

Quick Verdict

Walker S leads in higher payload, while Sophia leads in more DOF. The two robots are evenly matched, each excelling in different areas.

Walker S

UBTECH Robotics

Sophia

Hanson Robotics

DNA Fingerprint Overlay

Walker S Sophia

Specifications

ContactPriceContact (R&D version available)

170 cmHeight167 cm

48 kgWeight20 kg

41DOF83

15 kgPayload1.2 kg

—Runtime—

1.5 m/sSpeed—

YesStairsNo

NoLiDARNo

N/AComputeIntel Core i7, 32 GB RAM

Ecosystem Openness

—

Walker S

/100

Sophia

Hanson AI SDK + OpenCog. Ubuntu. Partial ROS. Niche community.

Pros and cons at a glance

Walker S

Pros

Shipping to customers (verified commercial availability)
41 degrees of freedom — full-body articulation

Cons

Unit price not publicly disclosed (quote-on-request or enterprise-only)
Closed software stack — no public SDK or ROS support

Sophia

Pros

Shipping to customers (verified commercial availability)
83 degrees of freedom — full-body articulation

Cons

Unit price not publicly disclosed (quote-on-request or enterprise-only)
Low rated payload (1.2 kg) — research or light-handling tasks only
Cannot navigate stairs — restricts deployment environments

Frequently asked questions

How do Walker S and Sophia compare on price?

Walker S: Contact. Sophia: Contact (R&D version available).

Which has higher payload: Walker S or Sophia?

Walker S rates a higher payload at 15 kg vs 1.2 kg. Payload ratings are vendor claims and do not always include a duty cycle — peak vs sustained payload can differ significantly.

Are both Walker S and Sophia 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 S or Sophia?

Walker S has no ROS support; Sophia has ROS 1 only. For research and multi-vendor robotics stacks, native ROS 2 is the strongest signal of ecosystem maturity.

Last updated: 2023

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Walker S full specs →Sophia full specs →UBTECH Robotics →Hanson Robotics →

Pros and cons at a glance

Walker S

Pros

Shipping to customers (verified commercial availability)
41 degrees of freedom — full-body articulation

Cons

Unit price not publicly disclosed (quote-on-request or enterprise-only)
Closed software stack — no public SDK or ROS support

Sophia

Pros

Shipping to customers (verified commercial availability)
83 degrees of freedom — full-body articulation

Cons

Unit price not publicly disclosed (quote-on-request or enterprise-only)
Low rated payload (1.2 kg) — research or light-handling tasks only
Cannot navigate stairs — restricts deployment environments

Frequently asked questions

How do Walker S and Sophia compare on price?

Walker S: Contact. Sophia: Contact (R&D version available).

Which has higher payload: Walker S or Sophia?

Walker S rates a higher payload at 15 kg vs 1.2 kg. Payload ratings are vendor claims and do not always include a duty cycle — peak vs sustained payload can differ significantly.

Are both Walker S and Sophia 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 S or Sophia?

Walker S has no ROS support; Sophia has ROS 1 only. For research and multi-vendor robotics stacks, native ROS 2 is the strongest signal of ecosystem maturity.