Layer‑2s: Faster, Cheaper
Layer‑2 rollups are processing many more Ethereum transactions at lower cost — recent summaries put some L2 throughput at roughly 10x mainnet speeds with fees under $0.50. (x.com) Fast preconfirmations and migrations were noted too — one migration saw about $200 million TVL shift to Optimism and some preconfirmation latencies reported below 100ms. (x.com) (x.com)
Ethereum’s busiest side networks now handle far more activity than the base chain while charging users cents instead of mainnet-style fees. (ethereum.org) (l2beat.com) A layer 2 rollup is a network that bundles many transactions off the main Ethereum chain, then posts the results back to Ethereum for settlement. Ethereum.org says rollups are about 5 to 20 times cheaper than Ethereum layer 1 today, and that over 90% of many rollup user costs historically came from posting data back to Ethereum. (ethereum.org 1) (ethereum.org 2) That cost changed in March 2024, when Ethereum activated the Cancun-Deneb upgrade, also called Dencun, and added “blobs,” a cheaper temporary data lane for rollups. Ethereum.org says blobs lowered rollup storage costs, and L2BEAT now tracks major rollups including Base, Arbitrum One, and OP Mainnet as posting data with blobs or calldata on Ethereum. (ethereum.org) (l2beat.com) Speed changed too. Optimism’s documentation says Flashblocks deliver pre-confirmations in 250 milliseconds on OP Mainnet and can be configured down to 200 milliseconds, while Base says its Flashblocks stream 200 millisecond sub-blocks inside the normal two-second block window. (docs.optimism.io) (docs.base.org) Those pre-confirmations are not the same as final settlement on Ethereum. Base says apps can use the fast signal immediately or wait for the standard two-second block, and Ethereum.org says many rollups still rely on centralized sequencers that order transactions before they are submitted to Ethereum. (docs.base.org) (ethereum.org) The migration story is starting to follow the fee story. Ether.fi said on February 18, 2026 that it plans to move more than 70,000 cards, 300,000 accounts, and more than $160 million in total value locked to Optimism’s OP Mainnet over the coming months. (ourcryptotalk.com) Live dashboards show how concentrated that market has become. L2BEAT’s total value secured page lists Arbitrum One at about $16.08 billion, Base at about $11.75 billion, and OP Mainnet at about $1.56 billion, while its OP Mainnet project page shows about 24.26 user operations per second over the past day. (l2beat.com 1) (l2beat.com 2) The tradeoff is that cheaper, faster transactions still come with design choices users have to trust. Ethereum.org says rollups are central to Ethereum’s scaling roadmap, but also says the sector is still working through sequencer decentralization, data availability, and the move from soft confirmations to stronger guarantees. (ethereum.org)
