Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more
BlockchainsArbitrum
Leads334 ms
- p99
- 501 ms
- rank
- #2
- samples
- 340,401
Mantle
Trails1.81 s
- p99
- 2.97 s
- rank
- #3
- samples
- 42,736
Arbitrum leads on 3 of 4 shared benchmarks, Mantle on 1. Arbitrum wins on Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more (334 ms vs 1.81 s), Fastest Chainlink CCIP source chain by end-to-end delivery latency (17.6 min vs 20.0 min), Fastest LayerZero source chain by end-to-end message delivery (27.23 s vs 1.5 min). Mantle wins on Cheapest blockchain transaction fee, live across 15 L1 and L2 chains ($0.000630 vs $0.00104).
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.
Modular OP Stack fork using EigenDA for data availability rather than Ethereum calldata, cutting L1 anchoring cost. 2-second sequencer block time, MNT token for gas (ETH-pegged).
Arbitrum
Leads334 ms
Mantle
Trails1.81 s
Arbitrum
Trails$0.00104
Mantle
Leads$0.000630
Arbitrum
Trails16.6 min
Mantle
No data in window
Arbitrum
Leads17.6 min
Mantle
Trails20.0 min
Arbitrum
Leads27.23 s
Mantle
Trails1.5 min
Arbitrum
Trails20.0 min
Mantle
No data in window
Arbitrum and Mantle are compared on 6 shared OpenChainBench benchmarks. Arbitrum leads on Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more. Mantle leads on Cheapest blockchain transaction fee, live across 15 L1 and L2 chains. See the live table on this page for every metric.
On the Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more benchmark, Arbitrum leads at 334 ms versus Mantle at 1.81 s. Live measurement is updated continuously by the OpenChainBench harness.
On the Cheapest blockchain transaction fee, live across 15 L1 and L2 chains benchmark, Mantle leads at $0.000630 versus Arbitrum at $0.00104. Live measurement is updated continuously by the OpenChainBench harness.
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.
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.