How Does the Cost of Gas on L2 Compare to L1?

The cost of gas on Layer-2 (L2) is significantly lower than on Layer-1 (L1). L2s achieve this reduction by bundling hundreds or thousands of transactions into a single L1 transaction.

The total L1 gas cost for that single transaction is then amortized across all the bundled L2 transactions, making the per-transaction cost for the end-user dramatically cheaper. This lower cost is a primary benefit of L2 scaling solutions.