Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more
BlockchainsArbitrum
Leads345 ms
- p99
- 852 ms
- rank
- #2
- samples
- 310,745
zkSync Era
Trails3.08 s
- p99
- 48.51 s
- rank
- #9
- samples
- 13,991
Block time
Arbitrumn/azkSync Eran/a
Arbitrum vs zkSync Era
Arbitrum leads on both live benchmarks. Arbitrum wins on Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more (345 ms vs 3.08 s), Cheapest blockchain transaction fee, live across L1 and L2 chains ($0.00116 vs $0.00255). Data as of 2026-09-24 UTC.
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 Era
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 L1 and L2 chains
BlockchainsArbitrum
Leads$0.00116
- p99
- $0.00385
- rank
- #11
- samples
- 20,160
zkSync Era
Trails$0.00255
- p99
- $0.00256
- rank
- #14
- samples
- 20,160
Native transfer fee USD
Arbitrumn/azkSync Eran/a
Frequently asked questions
Arbitrum vs zkSync Era: which one is better?
Arbitrum and zkSync Era are compared on 2 shared OpenChainBench benchmarks. Arbitrum leads on Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more. See the live table on this page for every metric.
Which is faster, Arbitrum or zkSync Era?
On the Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more benchmark, Arbitrum leads at 345 ms versus zkSync Era at 3.08 s. Live measurement is updated continuously by the OpenChainBench harness.
How is the Arbitrum vs zkSync Era comparison measured?
Every benchmark on this page uses the same open methodology, published at https://openchainbench.com/methodology. Data is CC-BY-4.0. Measurement harnesses are MIT-licensed.
Related comparisons
How this pair was selected
Auto-generated pairs require: both providers in the same benchmark for seven consecutive days, at least 1000 samples per provider, observable third-party search demand, and a public /products/[slug] page on OCB. Editorially curated pairs (like this one) may publish early when search demand is high and data is accruing; panels with fewer than 100 samples are shown as provisional. The full pair ledger is versioned in the public repo.