Swapping on and across Linea

Linea is a zero-knowledge rollup on Ethereum. It executes transactions off mainnet and posts succinct validity proofs back to Ethereum, which is what a zkEVM does. It inherits Ethereum's security while cutting the cost of each transaction. It uses ETH for gas, so there's no separate gas token to buy first.

Being a zkEVM means Linea runs the same contract logic and address format as Ethereum, so wallets, tokens, and tools carry over. For a user, a Linea swap feels like an Ethereum swap at a lower fee.

Multiswap compares routes from the engines that quote Linea rather than running its own liquidity. For a Linea swap it queries same-chain and cross-chain engines in parallel and ranks quotes by net output after estimated gas.

Because Linea is one of several low-fee Ethereum L2s, comparing across engines also shows when routing through a different network would land more value, which is useful when you're choosing where to receive.

Linea's fees are low because execution happens on the rollup, though they still move with demand. The zk-proof model gives it a different finality character from optimistic rollups: validity is proven cryptographically rather than assumed and challenged, which shapes how withdrawals back to Ethereum settle.

For a swap that stays on Linea or routes through a cross-chain engine, treat timing as typical behavior that varies with conditions rather than a fixed figure.