One robotaxi player has grown its share of users so far in 2026 — and it's not Waymo

Zoox, an Amazon-owned robotaxi service, increased its share of monthly active users to 25% in the first half of 2026, up from 15%, while Waymo's share dropped to 69% from 79%. Zoox expanded operations to Austin, Miami, and expanded areas in San Francisco and Las Vegas, doubling its user base during the period.