Buying guide
Kiwibot 4.0 vs REV-1 in 2026
Comparing 2 humanoid robots across availability, pricing, capabilities, and verified deployments. Current as of 2026.
| Attribute | No image on file | No image on file |
|---|---|---|
| Manufacturer | Kiwibot | Refraction AI |
| Form factor | sidewalk | sidewalk |
| Maturity | commercial | pilot |
| Availability | internal-onlyenterprise | internal-onlyenterprise |
| Price | Not announced | Not announced |
| Capability claims | — | — |
| Brain | — | — |
| Verified deployments | 1Miami | 1Ann Arbor |
| Privacy practices | — | — |
| Sources on file | 5 | 7 |
Editorial summaries
Kiwibot 4.0
Kiwibot's fourth-generation sidewalk delivery robot is a semi-autonomous bot with teleoperator oversight and an insulated cargo compartment sized for campus food delivery. There is no consumer price: it is a B2B delivery service, not a robot sold to consumers. On the autonomy spectrum it sits between fully teleoperated and fully autonomous: semi-autonomous with human teleoperator oversight. From Kiwibot, it is at commercial maturity.
REV-1
Refraction AI's REV-1 (Refraction AI, founded 2017 in Ann Arbor by University of Michigan professors) is a distinctive three-wheeled delivery vehicle sized between a sidewalk bot and a car: up to 15 mph with about a 280-pound payload, designed for winter and bicycle-courier-style operation, running primarily in the bike lane or road margin while able to use sidewalks where permitted, a regulatory regime between a sidewalk personal delivery device and a road autonomous vehicle. There is no consumer price: it runs a robots-as-a-service model where customers subscribe to dedicated, brand-customizable robots. Several verified-vs-claimed points matter. A reported wind-down or acquisition is refuted: Refraction is verified still operating through 2024 to 2026 (new CEO Luke Schneider, an Austin office, Chick-fil-A as a marquee client, an active 2026 profile); the 'Osage Venture Partners exited' label is a venture-portfolio markdown, not a confirmed acquisition or shutdown, so it is not tagged discontinued. It is recorded at pilot maturity: a roughly 21-person company with a named client and multi-city presence but no independently verified scale figures. Any lifetime delivery count, fleet size, revenue, or live-market count is unverified, and the claim that the REV-1 was discontinued in favor of a 'REF-1' is a likely misread of source language describing a second generation of the same design.
Machine-readable: this page as markdown.