Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more
BlockchainsArbitrum
Leads348 ms
- p99
- 864 ms
- rank
- #2
- samples
- 309,611
Mantle
Trails1.86 s
- p99
- 2.98 s
- rank
- #3
- samples
- 42,846
Arbitrum leads on 5 of 6 shared benchmarks, Mantle on 1. Arbitrum wins on Fastest L2 block time, live across Robinhood, Arbitrum, Base and 7 more (348 ms vs 1.86 s), Fastest Chainlink CCIP source chain by end-to-end delivery latency (17.3 min vs 25.0 min), Fastest LayerZero source chain by end-to-end message delivery (25.96 s vs 1.0 min), Fastest Axelar GMP source chain by end-to-end delivery (20.0 min vs 45.0 min). Mantle wins on Cheapest blockchain transaction fee, live across L1 and L2 chains ($0.000593 vs $0.00107). Data as of 2026-10-10 UTC.
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
Leads348 ms
Mantle
Trails1.86 s
Arbitrum
Trails$0.00107
Mantle
Leads$0.000593
Arbitrum
Trails16.7 min
Mantle
No data in window
Arbitrum
Leads17.3 min
Mantle
Trails25.0 min
Arbitrum
Leads25.96 s
Mantle
Trails1.0 min
Arbitrum
Leads20.0 min
Mantle
Trails45.0 min
| Provider | Bridged TVL | Bridged share | 7d change | 7d vs peers | Native | Canonical | External |
|---|---|---|---|---|---|---|---|
| Arbitrum | $7.93B | 72.1% | - | - | $3.07B | $3.61B | $4.33B |
| Mantle | $1.33B | 96.8% | - | - | $44.58M | $680.21M | $647.46M |
Bridged TVL is value secured by the chain's bridge, not value locked in its DeFi protocols; a chain can rank high on one and low on the other. The split is L2Beat's: canonical is escrowed on the host chain by the chain's own contracts, external came through a third-party bridge, native was minted here. Rows are the chains L2Beat tracks in its scaling summary; a settled L1 has no row by construction, not by omission. Size is not quality: a large balance says capital came, not that it stayed.
| Provider | 30d change | Stablecoin float | Net 7d | 7d change |
|---|---|---|---|---|
| Arbitrum | - | $4.13B | - | - |
| Mantle | - | $553.51M | $4.88M | 0.89% |
Stablecoin float is where dollars are parked, not what they do. A chain can take in a billion that sits idle, and lose float to a single issuer redeeming. The figure is DefiLlama's chain-wide pegged-USD aggregate, every issuer combined; it does not separate a bridge inflow from a native mint, and a dollar bridged to an L2 counts on both chains, so rows are not additive. Read the net dollars with the percentage beside them: the same $400M is a rounding error on Ethereum and a doubling elsewhere.
Arbitrum and Mantle are compared on 8 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 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 348 ms versus Mantle at 1.86 s. Live measurement is updated continuously by the OpenChainBench harness.
On the Cheapest blockchain transaction fee, live across L1 and L2 chains benchmark, Mantle leads at $0.000593 versus Arbitrum at $0.00107. 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.