Fastest L2 block time, live across Arbitrum, Base, Optimism and 6 more
BlockchainsArbitrum
Leads332 ms
- p99
- 497 ms
- rank
- #1
- samples
- 329,953
Zksync
Trails2.50 s
- p99
- 49.33 s
- rank
- #6
- samples
- 14,865
Arbitrum vs Zksync
Side by side OpenChainBench measurements. Identical layout, no editorial verdict, the live data leads. Each panel surfaces the aggregate plus the chain and region breakdowns when the underlying bench exposes them, straight from the Prometheus queries that drive the parent benchmark pages.
Arbitrum
Optimistic rollup built on Nitro stack with a fast-finality sequencer. Sub-second block times (~250 ms) via a 250 ms default block interval, far below the 2 s OP Stack convention. 7-day fraud-proof window for L1 finality.
Zksync
Matter Labs' zk-rollup with the ZK Stack reference implementation and a custom LLVM-based VM (EraVM). Batched producer with variable block cadence (p50 ~3-6 s) tied to proof generation rather than fixed sequencer intervals.
Side by side measurements
Cheapest blockchain transaction fee, live across 20 L1 and L2 chains
BlockchainsArbitrum
Leads$0.000666
- p99
- $0.000714
- rank
- #12
Zksync
Trails$0.00148
- p99
- $0.00151
- rank
- #13
How this pair was selected
A pair is published when all four conditions hold. Both providers run in the same OpenChainBench benchmark for at least seven consecutive days. Each provider has at least 1000 samples in the measurement window. The head to head query has observable third party search demand. Both providers have a public /products/[slug] page on OCB. The full pair ledger is versioned in the public repo so the methodology is externally verifiable.