robotindex Hello Robot Stretch 3
A lightweight wheeled mobile manipulator from Hello Robot of California: a small two-wheel base, a tall mast, and a telescoping arm that rides up and down the mast to reach from floor to countertop height. Stretch 3 launched in February 2024 at $24,950, weighs about 24.5 kg, carries 2 kg, and runs ROS 2 and Python. It is widely used in research on household manipulation. Hello Robot has since released Stretch 4 and states Stretch 3 is no longer sold directly.
Manufacturer page — hello-robot.com →
Image: Hello Robot (Stretch 3)
Specs
Launch Price
$24,950February 2024; Stretch 4 is $29,950
Weight
24.5 kg54 lb
Dimensions
33 × 34 × 141 cm13 × 13.4 × 55.5 in
Payload
2 kg4.4 lb
Arm Extension
52 cmStretch RE figure; Stretch 3 not confirmed
Lift Range
110 cmStretch RE figure; Stretch 3 not confirmed
Runtime
2–5 h5 h light CPU use, 2 h heavy
Compute
Intel NUC 12Core i5-1240P, 12 cores; WiFi 6E
Wrist
DexWrist 3Pitch and roll; quick-change tool mount
Cameras
RealSense D435if + D405Head and wrist depth; 140° wide RGB camera
Degrees of Freedom
7 + gripper + head2 base, 1 lift, 1 arm, 3 wrist
Software
ROS 2 / PythonUbuntu 22.04; calibrated URDF
Reference Price
Stretch 3 launched at $24,950, with the gripper, DexWrist 3, sensor head, onboard computer and software included. Hello Robot no longer sells it: its purchase page lists only Stretch 4 at $29,950 and states Stretch 3 is no longer sold directly, with no upgrade path from Stretch 3 or earlier. Any remaining units would be second-hand. The Dex Teleop Kit and charging dock were sold separately. robotindex does not sell this product.
Insights
Hello Robot was founded by Aaron Edsinger (CEO) and Charlie Kemp (CTO), and the original Stretch Research Edition shipped in 2020 at about $20,000. Stretch 3 doubled onboard compute over Stretch 2 with the NUC 12, made DexWrist 3 standard, added a wrist-mounted RealSense D405 for eye-in-hand manipulation, and introduced Gripper 3, which opens 40% wider and carries ArUco markers on the fingertips. Its differential-drive base turns before it translates; Stretch 4, announced May 12, 2026, replaced it with an omnidirectional base, a Jetson Orin NX option, two hemispherical lidars and a redesigned head, with arm, lift and base running at twice the speed and 10% more reach. The code is public on GitHub, and the repository states its licensing is set per subdirectory and the software is intended for use with Stretch robots. The README does not mention published hardware design files, so this page carries no Open Source badge. Datasets recorded on Stretch robots appear on Hugging Face (see the Repos & Datasets pages); the robot pictured is identified as a Stretch 3 from its head camera and wrist design.
Verified against Hello Robot's Stretch 3 product page (hello-stretch3.com), its purchase page (hello-robot.com/purchase), The Robot Report and Automated Warehouse launch coverage, Tegakari's Stretch 3 and Stretch RE write-ups, the Stretch design paper (arXiv 2109.10892), and Stretch 4 coverage (Business Wire, IEEE Spectrum), as of October 2026. Flagged as uncertain: the Stretch 3 hardware guide returned a 404, so the 52 cm arm extension and 110 cm lift range come from the 2020 Stretch RE listing and the design paper (which gives a 71 cm reach from the base) and may differ on Stretch 3; the Discontinued status rests on Hello Robot's purchase-page statement that Stretch 3 is no longer sold directly, not an end-of-life notice; one retailer lists 30 kg against the official 24.5 kg; Robots Guide's Stretch entry (46 kg, 160 cm, $29,950, 8 hours) appears to describe Stretch 4 and was not used; the licence of the code was not confirmed; and the pictured robot was identified as a Stretch 3 from its visible head camera and wrist design, and the photo shows only the mast, arm and head.