Boston Dynamics Spot

Spot is a four-legged mobile robot made by Boston Dynamics. It became commercially available in September 2019^[1]. Boston Dynamics says the machine is intended for commercial and industrial use only^[1]: it is sold as a working tool, not as a consumer product or a demonstration prototype.

Walking on four legs

Spot stands and moves on four legs. The point of legs is terrain: the official specification lists a maximum step height of 300 mm and a maximum slope of 30 degrees, so the robot can step up onto ledges and walk up inclines that would stop a wheeled platform^[2]. Its dimensions are modest for an industrial machine — 1,100 mm long, 500 mm wide, 191 mm high when sitting and 610 mm high at its default walking height^[2] — and it weighs 33.8 kg net with the battery fitted^[2]. Maximum walking speed is 1.6 m/s^[2].

The published environmental figures describe where it can work: an IP54 ingress-protection rating^[2], meaning protection against dust and splashing water; an operating temperature range from -20 °C to 55 °C^[2]; and a 360-degree horizontal field of view with a 4 m terrain-sensing range^[2], which is how the robot perceives the ground immediately around it. Taken together, these numbers describe a machine meant for outdoor and shop-floor conditions rather than a laboratory floor.

A modular platform

Spot is built as a modular platform rather than a fixed instrument. It can be fitted with payloads including cameras, additional ports, on-board computers and LIDAR^[1]. In practice this means the same robot body can be configured for different sensing or computing jobs by changing what is mounted on it, and the payload capacity — 20.43 kg, according to Boston Dynamics^[2] — sets the limit on how much equipment it can carry.

Autonomy

The company says Spot can charge autonomously, replan around new obstacles and self-right after a fall^[2]. Each of these is about reducing the amount of human attention a deployment needs: the robot returns to a charger by itself, adjusts its route when something new blocks the way, and gets back on its feet if it tips over instead of waiting for someone to pick it up.

From launch to a global product

Commercial availability began in September 2019^[1]. On 9 September 2020, Boston Dynamics expanded commercial sales of Spot to the European Union, the United Kingdom and Canada^[1]. The same announcement said the robot had completed the CE marking process for the EU Machinery, EMC and Radio Equipment Directives^[1] — the conformity steps required before an industrial machine can be sold in the EU market.

By the time of the company's April 2024 announcement of an electric Atlas, Boston Dynamics cited more than 1,500 Spot robots in customer hands^[2] and over 1,500 Spot deployments^[3]. The two statements, one from the product page and one from the Atlas announcement, describe the same order of fleet size.

Where it sits

Spot is sold as a catalogue product with published specifications, a payload ecosystem and a certification path for export markets^[1][2]. Boston Dynamics cites its deployment count alongside its later Atlas work^[3], which indicates that inside the company, the robot is treated as a deployed, operating fleet rather than a one-off demonstration.