Boston Dynamics’ Cheetah robot may be the fastest, but MIT’s version of the DARPA-backed quadruped robot is proving to be the most efficient. In a newly released video, MIT’s Biomimetic Robotics Lab shows off it’s new and improved Cheetah, which can move along at a respectable 13.7 miles per hour and carry its own power source. Outside of the lab on the open savannah, that’s a critical capability.

 

But while MIT’s Cheetah isn’t the fastest--we’ve seen Boston Dynamics’ Cheetah set a land speed record for running robots at 28.3 miles per hour--that’s not really what we’re looking for in the video below. There are two primary aspects of MIT’s design that set it apart: one is it’s biomimetic design that reduces stress on joints and improves efficiency (things like Kevlar tendons in the legs that act like real tendons, helping the limbs return to zero without requiring power from the Cheetah’s electric motors).