KORTHOS / ECOSYSTEM / PRODUCT

Stretch 4

About

About Stretch 4

Stretch 4 combines an omnidirectional 45-centimetre-diameter base with a vertical lift, telescoping arm, wrist and quick-release tool interface. The arm reaches 61 centimetres including the wrist and carries up to 2.5 kg when fully extended. Calibrated RGB and depth cameras, floor-hazard sensing and contact-sensitive lightweight mechanics support operation in human indoor environments.

The robot ships with Ubuntu, ROS 2, a Python SDK and reference demonstrations for navigation, manipulation and embodied AI. Its onboard computer runs application software locally, and automatic charging supports longer unattended experiments. Hello Robot sells Stretch 4 as an integrated commercial platform for research, education, workplace automation and assistive-robotics pilots.

12 MAY 2026

Hello Robot launches Stretch 4 for mobile manipulation

Capabilities

Source-backed capabilities

  • Capability areas: Mobile manipulation
  • Workflows: Robot learning data
  • Operating environments: Research lab
  • Deployment model: Research and assistive mobile manipulation platform used by robotics teams and developers.
  • Navigation and obstacle avoidance

    Claimed - Hello Robot documents mapping, navigation, 3D SLAM and vision-language-model grasping as built-in Stretch 4 autonomy and manipulation capabilities for research use.

    Source
  • SLAM mapping

    Claimed - Hello Robot documents mapping, navigation, 3D SLAM and vision-language-model grasping as built-in Stretch 4 autonomy and manipulation capabilities for research use.

    Source
  • Robotic grasping

    Claimed - Hello Robot documents mapping, navigation, 3D SLAM and vision-language-model grasping as built-in Stretch 4 autonomy and manipulation capabilities for research use.

    Source
  • Remote and shared control

    Claimed - Hello Robot documents mapping, navigation, 3D SLAM and vision-language-model grasping as built-in Stretch 4 autonomy and manipulation capabilities for research use.

    Source

Supply

Supply / Components

  • Stretch 4

    Rs485 Smart Servo - Actuation - Feetech - Stretch 4 specifies Feetech RS485 smart servos in its production configuration - source: hello-robot.com

    Source
  • Stretch 4

    Nvidia Jetson Orin Nx For Hello Robot Stretch 4 - Compute & Control - NVIDIA - Hello Robot specifies NVIDIA Jetson Orin NX 16GB for auxiliary compute in Stretch 4 - source: hello-robot.com

    Source
  • Stretch 4

    Core Ultra 5 Processor - Compute & Control - Intel - Hello Robot specifies Intel Core Ultra 5 225H processing in Stretch 4 primary compute - source: hello-robot.com

    Source
  • Stretch 4

    Oak D Sr Wrist Depth Camera For Stretch 4 - robot_vision - Luxonis - Hello Robot specifies a Luxonis OAK-D SR stereo depth camera at the Stretch 4 wrist - source: hello-robot.com

    Source
  • Stretch 4

    Laser Line Hazard Sensor - sensors - PixArt Imaging - Hello Robot specifies six PixArt laser-line sensors for cliff and hazard monitoring in Stretch 4 - source: hello-robot.com

    Source
  • Stretch 4

    J128 LIDAR - Perception - Hesai Technology - Stretch 4 specifies two Hesai J128 lidar units in its production configuration - source: hello-robot.com

    Source
  • Stretch 4

    Oak Ffc Imx378 High Resolution Camera For Stretch 4 - robot_vision - Luxonis - Hello Robot specifies a Luxonis OAK-FFC IMX378 12MP head camera in Stretch 4 - source: hello-robot.com

    Source
  • Stretch 4

    Oak Ffc Ar0234 Dual Head Cameras For Stretch 4 - robot_vision - Luxonis - Hello Robot specifies dual Luxonis OAK-FFC AR0234 wide-field head cameras in Stretch 4 - source: hello-robot.com

    Source

Timeline

  • Hello Robot launches Stretch 4 mobile manipulator

    2026-05-12 - Product Launch - Hello Robot launched Stretch 4 as an open-source mobile manipulator for researchers, developers and application engineers building Physical AI applications. Stretch 4 is available now for USD 29,950 and adds an omnidirectional base, telescoping arm, sensor-rich head and NVIDIA Jetson Orin NX compute. The robot is positioned for close collaboration with people in homes and workplaces, including assistive use for people with severe mobility impairments.

    Source

Context

Market context

Commercial mobile manipulator from Hello Robot for indoor assistance, research, and practical manipulation near people using a compact non-humanoid body.

  • Target environment: Homes, research labs, care environments and indoor human spaces.
  • Workflow context: Mobile manipulation, object reaching, assistive tasks, indoor navigation and human-centred robot research.
  • Deployment model: Research and assistive mobile manipulation platform used by robotics teams and developers.
  • Commercial maturity: Public robot product from Hello Robot.
  • Adoption constraints: Requires application development, task setup, safe human-space operation and manipulation reliability.
  • Market position: Compact mobile manipulator focused on practical indoor reach and accessible research use.
  • Adjacent products: Assistive mobile manipulator for indoor research, home robotics and accessibility-focused task development.

Comparable Systems

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