What will Waymo or Alphabet report as the weekly paid ride figure at the time of Alphabet's Q4 2026 earnings call (expected late January/early February 2027)?

Current Trajectory and Mid-Year Plateau Alphabet's reported weekly paid rides figure stagnated through the first half of 2026, with the company citing "past 500,000" in both its Q1 and Q2 disclosures 55 sources. This stall is corroborated by hard California CPUC data—which historically accounts for ~75–80% of volume—showing actual monthly declines in Q2, from 47,205 trips per day in April to 44,964 in June x.com. Incremental weekly rides added had already decelerated sharply in Q1 (+14,800 in January, +6,400 in February, +2,700 in March) thedriverlessdigest.com. This cooling period was largely driven by a combination of a ~3,800-vehicle software recall, multi-city weather pauses, and an all-region freeway suspension that lasted until late July 2 sources.

Catalysts for Second-Half Reacceleration Growth is poised to resume in the second half of the year following several key unlocks. Most notably, on August 14, the California Public Utilities Commission approved expansion across 18 counties and authorized the deployment of the 6th-generation Ojai vehicles 3 sources. Supply constraints are also easing; an August aerial count identified ~953 Ojai units staged at the Mesa plant, with roughly 684 finished and awaiting deployment 2 sources. Combined with the resumption of freeway operations and driverless testing beginning in four new metros (Las Vegas, Denver, San Diego, and Tampa) in July 2 sources, the foundation is set for a meaningful ramp in paid volume.

Fleet Math and Operational Constraints Despite these catalysts, doubling the current 500k run rate to meet management's stated target of 1 million weekly rides by year-end 44 sources remains a formidable operational hurdle. Fleet math suggests that at roughly 130 rides per vehicle per week, hitting 1 million would require an active fleet of approximately 6,000 to 7,700 vehicles 2 sources, up from the ~3,900 reported in mid-2026. Regulatory approval does not equal immediate deployment; Waymo has explicitly stated that rollouts in new regions like Sacramento and San Diego will be "gradual and guided by our safety framework" electrek.co. Scaling up depots, charging infrastructure, and remote support while absorbing the lower initial utilization rates of new markets will act as a natural drag on rapid growth.

Final Judgment and Key Uncertainties Balancing the reality of the mid-2026 plateau with the fresh injection of new vehicles and market approvals places the median expectation at roughly 713k weekly paid rides. Alphabet has historically preferred citing conservative, lagging round numbers (e.g., citing 400k in February 2026 despite earlier internal milestones) techcrunch.com, suggesting the reported figure will likely cluster around milestones like 600k, 700k, or 750k. There remains a meaningful downside tail (p10 near 537k) if new market friction or safety-driven pauses result in a prolonged stall, forcing Alphabet to stick with a figure near 500k–550k. Conversely, the public 1-million-ride target creates a strong incentive for an aggressive push, sustaining a solid upside tail (p90 at 1M) for a loudly announced milestone achievement by the Q4 call.