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Taiko Hekla will be sunsetting with the deprecation of the Holesky Testnet on September 30th, 2025. In it's place, we are deploying the Taiko Hoodi testnet with Ethereum Hoodi as L1. Please find network details here.

Differences from Ethereum

ParameterEthereumTaiko AlethiaReasoning
Block gas limit36,000,000 gas241,000,000 gasCurrently in Raiko, memory use scales linearly with block size both in the host (witness generation) and in the guest (memory use inside the VM/program being proven) so we set the block gas limit to 241m gas.
Block gas target18,000,000 gas40,000,000 gas (per L1 block)Assuming an L2 block time of ~3 seconds will have a ~15,000,000 gas target.
Block time12 seconds~2-6 secondsThis value is variable and will change as of based preconfirmations.

Geth Diff

Here is an overview of the changes made to the go-ethereum codebase in taiko-geth.