Hello Robot Stretch 3 24.5kg 141cm Prismatic-Mast, Dual-RealSense & Open-Source ROS 2 / LeRobot Mobile Manipulator
24.5-kilogram, 141cm-tall lightweight mobile manipulator engineered on a 33×34cm human-width differential-drive base—combining a 1.10-meter vertical lift mast, 52cm telescoping carbon-fiber prismatic arm, 3-DoF Dex Wrist 3 compliant gripper (2.0kg payload), dual Intel RealSense RGB-D cameras (head D435i + wrist D405), 2D LiDAR, Intel 12th-Gen Core i5 NUC12, and 100% open-source Python / ROS 2 / LeRobot VLA software.
Editorial Rating Methodology (★ 4.9 / 5.0): This score is an internal editorial evaluation compiled by the RECIWO Labs editorial team—not a user poll or crowd-voted rating. It assesses published silicon compute efficiency (25%), optical/sensor/actuator engineering (25%), battery & thermal envelope (20%), SDK/software openness (15%), and price-to-specification value (15%) based on official manufacturer datasheets and public technical documentation. Learn more about our evaluation rubric →
Key Engineering Highlights
- Replaces complex, heavy 7-DoF serial arms with a decoupled 1.1m vertical lift mast and 52cm telescoping carbon-fiber arm—mapping Cartesian tabletop and floor grasps directly to simple linear actuators
- Weighs just 24.5kg on a 33×34cm footprint so a single researcher can carry it up stairs while safely operating around people via low-inertia current-based contact sensing
- Pairs a pan-tilt Intel RealSense D435i head camera and a wrist-mounted RealSense D405 close-range depth camera with 100% open-source Python, ROS 2 Humble, Web Teleop, and LeRobot VLA pipelines
Full Hardware Specifications
| Processor / Edge SoC | Intel NUC 12 Pro (12th-Gen Intel Core i5-1240P 12-Core CPU, 16GB DDR4 RAM, 500GB NVMe SSD) Running Ubuntu 22.04 + ROS 2 Humble |
|---|---|
| AI Model Stack | Open-Source Embodied AI & VLA Stack Supporting Hugging Face LeRobot, Diffusion Policy, HomeRobot, MoveIt 2 & WebRTC Teleop |
| Display & Optics | Programmable Multicolor Base Status Light Bar + Laser Line Projection Pointer + Browser-Based Web Teleop UI |
| Camera & Vision | 2× Intel RealSense RGB-D Cameras: Pan-Tilt Head D435i (Workspace SLAM) + Sub-mm Wrist D405 (Close-Range Grasp Inspection) |
| Measured Weight | 24.5kg (54 lbs) Intrinsically Safe Lightweight Frame (33 × 34 × 141cm; Easily Lifted into a Car Trunk by One Person) |
| Battery & Runtime | Internal Rechargeable Sealed Lead-Acid / LiFePO4 Option Delivering 2.0–5.0 Hours Untethered Manipulation + Smart Charger |
| Connectivity & I/O | Wi-Fi 6 + Bluetooth + Gigabit Ethernet + USB 3.2 Expansion + Full Open-Source Python, ROS 2 & URDF/Isaac Sim Digital Twins |
| Sensors & Acoustics | RPLiDAR A1 360° 2D Laser Scanner + 2× RealSense RGB-D + 4-Mic Respeaker Array + Contact/Current Force Sensing on All Joints |
⚖️ Side-by-Side Comparison: Hello Robot Stretch 3 24.5kg 141cm Prismatic-Mast, Dual-RealSense & Open-Source ROS 2 / LeRobot Mobile Manipulator vs. Embodied AI & Robotics Peers
Direct specification comparison against leading competing devices in the Embodied AI & Robotics category.
| Specification | Hello Robot Stretch 3 24.5kg 141cm Prismatic-Mast, Dual-RealSense & Open-Source ROS 2 / LeRobot Mobile Manipulator (Current) | Unitree G1 Humanoid Robot (2026 Developer Edition) → | LeRobot SO-101 Open-Source Bimanual Teleop Kit → | Unitree Go2-W Wheeled-Legged Embodied AI Dog → |
|---|---|---|---|---|
| Brand | Hello Robot | Unitree Robotics | Hugging Face × TheRobotStudio | Unitree Robotics |
| Retail Price | $24,950 | $16,000 | $260 | $4,800 |
| Editorial Rating | ||||
| Edge SoC | Intel NUC 12 Pro (12th-Gen Intel Core i5-1240P 12-Core CPU, 16GB DDR4 RAM, 500GB NVMe SSD) Running Ubuntu 22.04 + ROS 2 Humble | 8-Core High-Perf CPU + NVIDIA Jetson Orin NX (100 TOPS) | Tethered to Apple Silicon Mac or NVIDIA GPU Host | Jetson Orin NX 16GB (100–157 TOPS) |
| AI Model Stack | Open-Source Embodied AI & VLA Stack Supporting Hugging Face LeRobot, Diffusion Policy, HomeRobot, MoveIt 2 & WebRTC Teleop | UnifoLM Unified Robot Model + Open RL Stack | ACT / Diffusion Policy / Pi-0 VLA | RL Locomotion + GPT-Vision Navigation |
| Display / Optics | Programmable Multicolor Base Status Light Bar + Laser Line Projection Pointer + Browser-Based Web Teleop UI | Interactive LED Visor Array | Host Visualizer GUI | Front LED Matrix + Companion Telemetry |
| Camera | 2× Intel RealSense RGB-D Cameras: Pan-Tilt Head D435i (Workspace SLAM) + Sub-mm Wrist D405 (Close-Range Grasp Inspection) | Intel RealSense D435i Depth + Livox Mid-360 3D LiDAR | Dual 1080P 60fps Global Shutter Wrist + Overhead Cameras | 130° Wide-Angle Stereo + Hemispherical 4D LiDAR |
| Weight | 24.5kg (54 lbs) Intrinsically Safe Lightweight Frame (33 × 34 × 141cm; Easily Lifted into a Car Trunk by One Person) | 35.0kg (Foldable to fit car trunk) | 1.4kg per arm (including base) | 18.0 kg |
| Battery | Internal Rechargeable Sealed Lead-Acid / LiFePO4 Option Delivering 2.0–5.0 Hours Untethered Manipulation + Smart Charger | 9,000mAh Quick-Swap Battery Pack (2.5h runtime) | 12V/5A DC Regulated Power Supply | 15,000mAh 4-Hour Long-Endurance Pack |
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