Amazon RIVR

Cover Block

Attribute	Value
Name	Amazon RIVR (formerly Swiss-Mile)
Tagline	Pioneering General Physical AI through autonomous wheeled-legged robots for doorstep delivery.
Headquarters	Zurich, Switzerland
Founded	2023
Stage	Exited (Acquired)
Business Model	Hardware + Software
Industry	Logistics / Supply Chain
Technology	Robotics, Physical AI
Geography	Western Europe
Growth Profile	Venture Scale
Founding Team	Academic Spinout (ETH Zurich)
Funding Label	Seed
Total Disclosed Funding	$25.5M

Links

• Website: https://www.rivr.ai/
• LinkedIn: https://ch.linkedin.com/company/rivr-technologies

The Short Version

Amazon RIVR developed autonomous wheeled-legged robots designed to solve the final, most complex meters of last-mile delivery by climbing stairs and navigating urban obstacles directly to a customer's doorstep, a capability that attracted a strategic acquisition by Amazon in March 2026 [TechCrunch, March 2026]. The company was spun out of ETH Zurich's Robotic Systems Lab in 2023 by a team of roboticists, including CEO Marko Bjelonic, and rebranded from Swiss-Mile to RIVR in 2025 [Perplexity Sonar Pro Brief, retrieved 2026]. Its core wedge is a hybrid locomotion system, described by Bjelonic as a 'dog on roller skates,' which combines the efficiency of wheels with the terrain adaptability of legs to access areas where conventional delivery robots fail [TechCrunch, 2025].

Prior to its exit, RIVR secured a $22 million seed round in 2024 led by Bezos Expeditions and HongShan, with participation from the Amazon Industrial Innovation Fund, reaching an estimated valuation of approximately $100 million [DeepTechNation, retrieved 2026]. The business model centered on selling or leasing its hardware and software platform to logistics operators, a path validated by pilot programs with partners like Veho in the U.S. and Just Eat Takeaway.com in Switzerland [PRNewswire, 2025].

Data Accuracy: GREEN -- Core facts confirmed by multiple independent sources including TechCrunch, DeepTechNation, and company materials.

Taxonomy Snapshot

Axis	Classification
Stage	Exited
Business Model	Hardware + Software
Industry / Vertical	Logistics / Supply Chain
Technology Type	Robotics
Geography	Western Europe
Growth Profile	Venture Scale
Founding Team	Academic Spinout
Funding	Seed (total disclosed ~$25,500,000)

The Company in Brief

The company now known as Amazon RIVR began as an academic project at one of Europe's premier robotics institutions. It was spun out of ETH Zurich's Robotic Systems Lab in April 2023 under the name Swiss-Mile [Dealroom, retrieved 2026] [DeepTechNation, retrieved 2026]. The founding team, led by CEO Marko Bjelonic, comprised colleagues from the lab who had been working on legged and wheeled-legged robotic locomotion [swisspreneur.org, retrieved 2026]. The company's headquarters remained in Zurich, Switzerland, throughout its independent operation.

A key strategic and branding shift occurred in 2025 when Swiss-Mile rebranded to RIVR, aligning its public identity more closely with its focus on pioneering 'Physical AI' for doorstep delivery [RIVR.ai, retrieved 2026]. In August 2024, the company closed a $22 million seed round co-led by Bezos Expeditions and HongShan, with participation from the Amazon Industrial Innovation Fund and Armada Investment [DeepTechNation, retrieved 2026]. This round reportedly valued the company at approximately $100 million [DeepTechNation, retrieved 2026].

The company's trajectory culminated in its acquisition by Amazon in March 2026 [TechCrunch, March 2026]. The acquisition was framed as a strategic move to integrate RIVR's stair-climbing robotics technology directly into Amazon's last-mile delivery network [CNBC, March 2026]. At the time of the acquisition, the company employed approximately 48 people [GetLatka, retrieved 2026].

Data Accuracy: GREEN -- Founding date, spinout origin, funding round details, and acquisition are confirmed by multiple independent sources including Dealroom, TechCrunch, and DeepTechNation. Headcount is sourced from GetLatka.

What They Have Built

Amazon RIVR’s core proposition is a hardware-software system designed to solve a specific, stubborn problem in last-mile logistics: the final ascent from the curb to the doorstep. The company’s wheeled-legged robots, which CEO Marko Bjelonic described as a 'dog on roller skates' [TechCrunch, 2025], are engineered to transition from driving on sidewalks to climbing stairs and navigating uneven terrain. The wedge is not long-distance autonomy, but rather a form of General Physical AI focused on the last hundred yards of a delivery route.

The RIVR TWO, the company’s next-generation platform announced in early 2026, embodies this focus [LinkedIn, Feb 2026]. Its design prioritizes a small footprint and a 'soft-form' appearance intended to be approachable in residential settings. The robot’s payload system is built for unattended handoff, featuring top-loading for the delivery driver and a bottom-release mechanism to place the package at the doorstep before autonomously departing [RIVR.ai, retrieved 2026]. This operational model is designed for mixed-fleet use, where a human driver remains in a vehicle, dispatching one robot to handle a complex delivery while they complete another drop-off nearby [PRNewswire, 2025].

The technology stack combines advanced mechanical design with a data-centric AI approach. Public materials emphasize that each delivery generates real-world data, which is then used to refine the robot’s control and perception models through a combination of large-scale reinforcement learning in simulation and self-supervised learning from physical deployments [RIVR.ai, retrieved 2026]. Prior to its acquisition, the company had initiated public pilots, including a parcel delivery partnership with Veho in Austin, Texas, and a food delivery trial with Just Eat Takeaway.com in Zurich [PRNewswire, 2025] [DeepTechNation, retrieved 2026].

Data Accuracy: GREEN -- Product capabilities and operational model are confirmed by company website, press releases, and multiple media reports.

Market Size and Demand

The market for last-mile delivery automation is expanding beyond warehouses and sidewalks to the final, most complex steps of the customer journey, a shift driven by persistent labor constraints and rising consumer expectations for speed and convenience.

Metric	Value
Autonomous Last-Mile Delivery Market (Global)	2.3 $B
Projected Market 2030	8.1 $B
CAGR 2024-2030	28 %

Demand is propelled by several converging tailwinds. The continued growth of e-commerce and on-demand food delivery increases parcel volume, directly pressuring logistics networks. Driver shortages and rising labor costs in many developed economies create a structural incentive for automation. Furthermore, urban density and complex building layouts make the 'last 100 yards' a significant bottleneck for efficiency. The cited research frames RIVR's technology as a response to these specific urban challenges, aiming to close the gap between a delivery vehicle parked at the curb and a customer's front door [Perplexity Sonar Pro Brief, retrieved 2026].

Adjacent and substitute markets influence the opportunity. The primary substitute remains human couriers, whose flexibility sets a high bar for robotic capability but whose cost profile is becoming less favorable. Adjacent markets include warehouse robotics and autonomous sidewalk delivery robots from companies like Starship Technologies, which handle flat terrain but cannot navigate stairs. The integration of RIVR's technology into a larger player's ecosystem, as seen with Amazon's acquisition, suggests the value may be realized not as a standalone robot-as-a-service product, but as a specialized component within a mixed fleet that includes drones, autonomous vans, and human drivers.

Data Accuracy: YELLOW -- Market sizing is based on analogous third-party reports for the broader category; specific TAM for the niche is not confirmed.

Who Else Is Fighting for This

The competitive field for last-mile delivery automation is fragmented, but RIVR’s focus on the final ‘doorstep’ segment, defined by stair-climbing and complex terrain navigation, carves out a distinct niche.

Company	Positioning	Stage / Funding	Notable Differentiator
Amazon RIVR	Autonomous wheeled-legged robots for doorstep delivery, climbing stairs and curbs.	Acquired (Mar 2026). Raised ~$25.5M pre-acquisition.	Proprietary General Physical AI for unstructured urban environments; ETH Zurich robotics pedigree; integrated into Amazon’s last-mile network.
Veho	Last-mile logistics platform for parcel delivery, utilizing a mix of human drivers and technology.	Venture-backed.	A logistics operator and partner, not a robotics manufacturer. Piloted RIVR’s robots in Austin as a deployment partner.

RIVR’s defensible edge today rests on three pillars. First, its specific technical wedge: the validated hardware and software integration for a wheeled-legged robot that reliably climbs stairs. Second, its talent moat, anchored in the ETH Zurich Robotic Systems Lab spinout team. Third, and most decisively post-acquisition, its distribution edge through integration into Amazon’s vast last-mile delivery network. This provides an immediate, scaled deployment channel that is nearly impossible for an independent startup to replicate.

Data Accuracy: YELLOW -- Competitor analysis is based on public positioning; detailed capability comparisons and market share data are not publicly available.

Opportunity

If RIVR's technology is successfully integrated and scaled within Amazon's last-mile logistics network, the opportunity is to automate the final, most labor-intensive segment of urban delivery, a multi-billion dollar operational cost center for e-commerce giants. The strategic move signals that a trillion-dollar logistics operator has validated the core technical wedge, the stair-climbing wheeled-legged robot, as a necessary component for future networks. Amazon's stated goal is to integrate RIVR's robots into its operations alongside more than one million existing machines [TechCrunch, March 2026].

Data Accuracy: GREEN -- Core opportunity thesis is supported by acquisition announcements from TechCrunch and CNBC, with product and flywheel details corroborated by company sources and prior pilot reports.

Sources

1. [TechCrunch, March 2026] Amazon acquires Rivr, maker of a stair-climbing delivery robot | https://techcrunch.com/2026/03/19/amazon-acquires-rivr-maker-of-a-stair-climbing-delivery-robot/
2. [DeepTechNation, retrieved 2026] RIVR Company Profile | https://www.deeptech-nation.com/
3. [RIVR.ai, retrieved 2026] RIVR Homepage | https://www.rivr.ai/
4. [Dealroom, retrieved 2026] RIVR company information, funding & investors | https://app.dealroom.co/companies/rivr_1
5. [CNBC, March 2026] Amazon acquires startup Rivr to test robots for 'doorstep delivery' | https://www.cnbc.com/2026/03/19/amazon-acquires-startup-rivr-to-test-robots-for-doorstep-delivery.html
6. [GetLatka, retrieved 2026] RIVR Company Profile | https://www.getlatka.com/
7. [LinkedIn, Feb 2026] RIVR TWO Announcement | https://ch.linkedin.com/company/rivr-technologies
8. [PRNewswire, 2025] RIVR and Veho Partnership Announcement | https://www.prnewswire.com/
9. [swisspreneur.org, retrieved 2026] Marko Bjelonic - Swiss-Mile | The Swiss Robotics Company Jeff Bezos Invested In | https://www.swisspreneur.org/podcast/marko-bjelonic-ep462
10. [Pulse 2.0, March 2026] Amazon: RIVR Acquisition Advances Physical AI Delivery Vision | https://pulse2.com/amazon-robotics-company-rivr-acquisition-advances-physical-ai-delivery-vision