Boston Dynamics Stretchvsunitree B2

Boston Dynamics Stretch leads on 5 of 7 dimensions — strongest on deployment readiness.

Stretch

2 wins

1 wins

Category breakdown

Readiness, uptime, navigation & connectivity

Stretch

88
Deployment readiness
72
60
Maintenance confidence
60
Vision-led navigation (estimated)
Navigation
Vision-led navigation (estimated)
Wi-Fi / cloud fleet management (estimated)
Connectivity
Wi-Fi / cloud fleet management (estimated)

Price accessibility and ROI clarity

Even

Payload, speed, runtime & labor replacement

78
Labor replacement
45
23 kg (50 lbs)
Payload
40 kg (walking sustained); 120 kg (standing)
Up to 2 m/s driving speed
Speed
6 m/s
Up to 16 hours with high capacity option; more than a full shift on standard charge
Battery
4–6 hours (45 Ah / 2250 Wh capacity); 5 hours without load for 20 km mileage, 4 hours with 20 kg load for 15 km mileage

Environment fit, footprint & long-term upside

Stretch

85
Environment fit
80
81
Future potential
68
Pallet-sized footprint
Footprint
Standing: 1098 × 450 × 645 mm; Lying: 880 × 460 × 330 mm

Stretch · Best for

Large 3PL/logistics networks scaling to 1,000+ units across regional hubs

B2 · Best for

Power grid and petrochemical facility inspections, where thermal imaging and gas sensing payloads and all-terrain mobility justify cost.

Final judgment

If immediate deployment is the priority, choose Stretch. If the goal is to be ready when B2's capabilities mature, track it.