Proving State Cheaply: ZK Rollup Cost Models in 2026

Every proving stack we evaluated this year quotes cost per proof. None of them quote cost per settled dollar, which is the number that actually matters once volume is real.

The three stacks we modelled

We ran the same settlement workload — batch size, state diff shape, and finality requirements held constant — across three proving systems and measured wall-clock proving time, gas cost at finality, and infrastructure spend at our own traffic shape.

The cheapest proof was not the cheapest settlement once you priced in the infrastructure required to keep proving latency inside our SLA.

What we would tell a team choosing today

Model your actual batch shape before you compare vendors on cost-per-proof. A rollup that looks 30% cheaper on paper can be more expensive once you account for the prover cluster it needs to hit your latency target.