$24,950 (Stretch 3) / $29,950 (Stretch 4)Stretch 3 launched February 2024 at $24,950; Stretch 4 listed at $29,950 on hello-robot.com in 2026; RE1 was $17,950 in 2020.
AvailablePython from a laptopTelescoping armLightweightOpen sourceHome research
Weeks+Shipping: About 1 week. Ordered directly from Hello Robot (US) by quote or purchase order; Stretch 3 typically ships within one week of order or pre-payment.
Remote control: Python on the robot via SSH, or the Stretch AI remote setup where a GPU laptop/desktop runs perception and planning while the robot streams sensors.
Overview
A deliberately simple mobile manipulator (lift, telescoping arm, wrist) that weighs a fraction of PR2-class robots and fits in homes, making it the standard platform for in-home manipulation research and assistive robotics. Stretch 4 arrived in 2026 with six years of refinements; Stretch 3 remains in the lineup.
The most practical research mobile manipulator for real homes.
Specifications
| Category | Wheeled rovers · Research mobile manipulators & platforms |
|---|---|
| Released | 2020 |
| Availability | Available |
| Programmability | Open source (hardware + software) |
| Best for | Professionals & labs |
| Vision sensors | Depth camera, Camera, Lidar |
| Actuators | Mixed |
| Audio | Speaker, Microphone |
| Compute type | x86 PC (Intel / AMD) |
| Remote control | Python from a laptop |
| Size | Stretch 3: 141 cm tall, 33×34 cm footprint, 24.5 kg; Stretch 4: 160 cm tall, 45 cm diameter, 46 kg (33 kg with ballast removed) |
| Drive | 2-wheel differential |
| Compute | Intel NUC 12 (Stretch 3) |
| Vision | Intel RealSense D435if (head) + D405 (gripper) |
| Lidar | RPLIDAR A1 2D lidar |
| Sensors | IMU, wrist accelerometer, cliff sensors, motor current sensing |
| Runtime | Stretch 3: 2 h (high CPU) to 5 h (light CPU); Stretch 4: up to 8 h (light CPU) |
| Speed | Base up to 0.6 m/s (software normally clamps it to about 0.3 m/s); lift and arm about 0.2 m/s |
| SDK | Python stretch_body, ROS 2, Stretch AI toolkit, web teleop |
Ratings & reviews
Ratings and reviews load on the live site.
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