Before the long awaited token launch, monthly transaction count in optimism protocol has hit a new ATH. Worth noting that since June of 2021 this number has surged by +25,152%. Currently, the protocol
average gas fee savings vs layer1 is 94x. However, Optimism is not the most cost efficient L2 rollup.

In terms of ETH sending costs, it significantly looses out to Loopring and zksync, while in terms of swapping tokens it is one of the most efficient.

https://cryptorank.io/tags/layer-2

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