Hello Robot has introduced Stretch 4, the latest version of its open-source mobile manipulation platform, with a design philosophy that stands apart from much of today’s robotics industry. While many companies are focused on humanoid robots and eye-catching demonstrations, Stretch 4 is built around a simpler goal: creating machines that can work safely and usefully alongside people in everyday environments.
Priced at $29,950, Stretch 4 is aimed at researchers, developers, and engineers building physical AI applications. The platform combines an omnidirectional mobile base, a telescoping arm, and a dense sensor suite that includes two hemispherical 3D LiDAR units, multiple high-resolution cameras, and floor-level laser sensors. An onboard NVIDIA Jetson Orin NX provides the computing power to run AI models directly on the robot.
The technical specifications are impressive, but the larger significance lies in the design choices. Stretch 4 is intentionally compact and lightweight, with a low-energy structure that reduces risk during close human interaction. Rather than trying to replicate the human body, Hello Robot has prioritized practical mobility, manipulation, and intrinsic safety.
That approach stems from the company’s longstanding work in assistive robotics. Stretch has been used by individuals with severe mobility impairments to perform tasks such as retrieving objects, closing blinds, and feeding themselves through simple mobile controls. These real-world applications have shaped the robot’s architecture around reliability and intuitive operation rather than visual similarity to humans.
The company argues that designing for home use forces developers to solve some of robotics’ hardest problems. A machine operating in a house must navigate cluttered spaces, interact safely with people, and function predictably over long periods. Success in those conditions could open the door to broader applications in healthcare, elder support, and domestic assistance.
Stretch 4 includes a number of upgrades based on customer feedback. Its arm, lift, and base move twice as fast as the previous generation, while total reach has increased by ten percent. The robot can operate for up to eight hours and supports autonomous docking and self-charging, allowing longer deployments without human intervention.
More than 1,000 Stretch robots have been deployed in 23 countries since the platform launched in 2020. That growing user base has made Stretch one of the most widely adopted open-source mobile manipulation platforms in the world.
The release of Stretch 4 highlights an important divide in robotics. One path emphasizes humanoid form and high-profile demonstrations. The other focuses on building practical systems designed around specific human needs. Hello Robot is firmly in the second camp.
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