Digit vs Walker S2: Specs, Price & ROS Support Compared (2025)
Agility Robotics (Amazon) vs UBTECH Robotics — independent, side-by-side analysis.
Quick Verdict
Digit leads in higher payload, while Walker S2 leads in more DOF, faster speed, lower price. Overall, Walker S2 has an edge in 3 out of 4 compared categories.
Digit
Agility Robotics (Amazon)
Walker S2
UBTECH Robotics
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Digit Walker S2
Specifications
$250,000Price$90,000
175 cmHeight176 cm
65 kgWeight73 kg
16DOF52
16 kgPayload15 kg
4hRuntime—
1.5 m/sSpeed2 m/s
YesStairsYes
YesLiDARNo
N/AComputeN/A
Task Capabilities
✓Pick up a box from shelf?
◔Open a door handle?
✕Pour liquid into cup?
✕Use a power tool?
✕Type on keyboard?
✓Climb stairs with load?
◔Walk on uneven terrain?
✕Run (>3 m/s)?
◔Crouch under obstacle?
✓Navigate in crowd?
✓Recognize & locate objects?
✕Respond to voice commands?
✓Detect humans nearby?
◔Work 8-hour shift?
✕Hot-swap battery?
◔Operate 24/7 (with charging)?
✕Work in rain (IP65+)?
✕Work below 0°C?
✕Work in dusty environment?
✓Work safely alongside humans?
Ecosystem Openness
55
Digit
/100
—
Walker S2
ROS2 compatible, Python SDK. Closed source. Limited public docs.
Pros and cons at a glance
Digit
Pros
- Shipping to customers (verified commercial availability)
- Ships with LiDAR for robust depth sensing in low-light environments
Cons
- Premium pricing at $250,000 — enterprise budgets only
- Limited articulation (16 DOF)
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
Which is cheaper: Digit or Walker S2?
Walker S2 is cheaper at $90,000 vs $250,000 for Digit. Note that lower price does not imply lower total cost of ownership — see the TCO calculator on the Explore page for utilisation-adjusted figures.
Which has higher payload: Digit or Walker S2?
Digit rates a higher payload at 16 kg vs 15 kg. Payload ratings are vendor claims and do not always include a duty cycle — peak vs sustained payload can differ significantly.
Are both Digit and Walker S2 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: Digit or Walker S2?
Digit has ros2; Walker S2 has no ROS support. For research and multi-vendor robotics stacks, native ROS 2 is the strongest signal of ecosystem maturity.
Does Digit or Walker S2 use LiDAR?
Digit 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