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Differences between Monad and Ethereum

Transactions​

  1. Transactions are charged based on gas limit rather than gas usage, i.e. total tokens deducted from the sender's balance is value + gas_price * gas_limit. As discussed in Gas in Monad, this is a DOS-prevention measure for asynchronous execution. This may be revised before mainnet.

  2. Transaction type 3 (EIP-4844 type aka blob transactions) are not supported. This is temporary.

  3. Max contract size is 128kb (up from 24kb in Ethereum).

RPC​

See: RPC Differences