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Hello Robot

Stretch 4

Service robot

Light, open-source mobile manipulator with a telescoping arm, on sale for $29,950. Hello Robot co-develops enterprise applications like remote inspection, data-centre tasks, telehealth and micro-fulfilment, but it ships as a development platform rather than a turnkey solution.

Figures checked against the manufacturer’s own documents on September 13, 2026. Each links to its source.

Price and delivery

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Source: Hello Robot

Specification sheet

Capability

Payload
2.5 kgsource
Reach
550 mmsource
Lift height
1.19 msource

Footprint

Length
450 mmsource
Width
450 mmsource
Height
1.6 msource
Weight
46 kgsource

Power & endurance

Power
Battery
Runtime
8 hsource

Manufacturer source: hello-robot.com

Questions about the Stretch 4

How much can the Stretch 4 carry?
2.5 kg, according to Hello Robot. hello-robot.com
How far can the Stretch 4 reach?
550 mm, according to Hello Robot. hello-robot.com
How long does the Stretch 4 run on one charge?
8 h, according to Hello Robot. hello-robot.com
How much does the Stretch 4 weigh?
46 kg, according to Hello Robot. hello-robot.com