Quadruped Robots

D1 Ultra vs Spirit 40

Quadruped robot spec comparison — AgiBot vs Ghost Robotics.

AgiBot

D1 Ultra

58 / 100 Robo2u Score

IP54 industrial compact quadruped for patrol, inspection and rescue with open SDK and payload mounts

Ghost Robotics

Spirit 40

47 / 100 Robo2u Score

Compact defense quadruped for reconnaissance

SpecD1 UltraSpirit 40
Released2025-082020
StatusProductionProduction
Payload5 kg3 kg
Weight12 kg
Degrees of freedom12
Runtime
Top speed3.7 m/s2 m/s
Price
Robo2u Score5847

Highlighted = better on that spec (lower is better for price and weight; newer for release). The Robo2u Score is a transparent composite — see the Quadruped Robots for the full field.

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