Amazon acquires Rivr stair-climbing delivery robot

Amazon is the largest deployer of physical-AI robotics in the world by fleet count, with more than 1 million robots deployed across its global fulfillment network as of mid-2025, a count that continues to climb in 2026. The robot-to-human ratio across Amazon's operations is approaching 1:1, with roughly 1.5 million human employees. Amazon's physical-AI strategy is structurally vertically integrated: the company manufactures its own robotics platforms through Amazon Robotics (the subsidiary formed from the 2012 acquisition of Kiva Systems), operates autonomous vehicle robotaxi service through Zoox (acquired 2020), pilots external humanoids including [Agility robotics](/companies/agility-robotics) Digit, and acquired the Covariant founding team in August 2024 to accelerate AI deployment across robotics. The company's next-generation Shreveport, Louisiana fulfillment center deploys 10× more robots than a standard facility and serves as the orchestration testbed for Amazon's full robotics platform stack. Amazon's editorial significance is structural vertical integration unmatched by any other operator in physical AI. While most operators evaluate humanoids from external vendors (GXO, BMW, Toyota), and while most robot makers depend on external customer deployments (Figure, Agility, Apptronik), Amazon owns the entire stack: manufactures its own platforms, operates its own deployments, develops its own AI through Covariant talent, and runs its own autonomous-vehicle service. This puts Amazon in a category by itself among physical-AI operators globally.

Swiss robotics startup developing four-legged delivery robots on wheels (Rivr Two) for doorstep/last-mile delivery. Acquired by [Amazon](/companies/amazon) in March 2026 to research and test robot integration into delivery operations. Testing in extreme weather (snow, ice, stairs, steep hills) in Pittsburgh to prepare for real-world deployments.