The limits themselves were already documented; the material change is enforcement. Free-tier D1 workloads that previously relied on soft overage behavior now need query-cost awareness, indexes and a plan for temporary failures or paid migration.
Google’s new agent FinOps model combines hard monthly spend caps that pause agent API calls, Flexible Savings Plans with one- or three-year commitments, pay-as-you-go Gemini Enterprise usage and planned deferred execution at up to half normal inference cost. The controls are useful, but commitment economics and task eligibility need to be modeled carefully.