Stretch 4 vs RB-Y1
A sourced comparison, criterion by criterion. Every value links to the claim behind it, with its source and the date it was verified.
Stretch 4 (Hello Robot) and RB-Y1 (Rainbow Robotics) both belong to “Mobile manipulator”. They are documented on 4 criteria in common, measured the same way: height, weight, teleoperation supported, public sdk.
Computed on · latest data verification on
Criterion by criterion
| Criterion | Stretch 4 | RB-Y1 |
|---|---|---|
| Height | 1.6 mClaimed by the manufacturerClaimed by the manufacturer. Hello Robot (pages produit officielles), accessed 28 September 2026.Verified on | 1.4 mClaimed by the manufacturerClaimed by the manufacturer. Rainbow Robotics (pages produit officielles), accessed 30 September 2026.Verified on |
| Weight | 46 kgClaimed by the manufacturerClaimed by the manufacturer. Hello Robot (pages produit officielles), accessed 28 September 2026.Verified on | 170 kgClaimed by the manufacturerClaimed by the manufacturer. Rainbow Robotics (pages produit officielles), accessed 30 September 2026.Verified on |
| PayloadDifferent measurement conditions or market: the values cannot be compared directly. | 4 kgClaimed by the manufacturerClaimed by the manufacturer. Hello Robot (pages produit officielles), accessed 28 September 2026.Verified on | 3 kgClaimed by the manufacturerClaimed by the manufacturer. Rainbow Robotics (pages produit officielles), accessed 30 September 2026.Verified on |
| Autonomous navigation | YesClaimed by the manufacturerClaimed by the manufacturer. Hello Robot (pages produit officielles), published 1 October 2026.Verified on | Not disclosed |
| Camera | YesClaimed by the manufacturerClaimed by the manufacturer. Hello Robot (pages produit officielles), published 1 October 2026.Verified on | Not disclosed |
| Teleoperation supported | YesClaimed by the manufacturerClaimed by the manufacturer. Hello Robot (pages produit officielles), published 1 October 2026.Verified on | YesClaimed by the manufacturerClaimed by the manufacturer. Rainbow Robotics (pages produit officielles), accessed 28 September 2026.Verified on |
| Public SDK | YesClaimed by the manufacturerClaimed by the manufacturer. Hello Robot (pages produit officielles), published 2 October 2026.Verified on | YesClaimed by the manufacturerClaimed by the manufacturer. Rainbow Robotics (pages produit officielles), accessed 30 September 2026.Verified on |
“Not disclosed” means that no validated source gives the value, never “no”. A manufacturer’s claim is not a test: the level of evidence is shown under every value.
Frequently asked questions
- On which criteria can Stretch 4 and RB-Y1 be compared?
- On 4 criteria documented for both robots and measured the same way: height, weight, teleoperation supported and public sdk.
- Who makes Stretch 4 and RB-Y1?
- Stretch 4 is made by Hello Robot, RB-Y1 by Rainbow Robotics.
- Where do the values in this comparison come from?
- Every value links to a claim on the robot’s sheet, with its source, its level of evidence and the date it was verified. “Not disclosed” means that no validated source gives the value, never “no”.
Sourced comparisons
Cite this sheet
Plain citation
“Stretch 4 vs RB-Y1”, Vuntum, updated 2 October 2026, https://vuntum.com/en/comparison/hello-robot-stretch-4-vs-rainbow-rb-y1
APA format
Vuntum. (2026, October 2). Stretch 4 vs RB-Y1. https://vuntum.com/en/comparison/hello-robot-stretch-4-vs-rainbow-rb-y1