BI2 vs other Layer2 Networks

INFO

This is a living document and is susceptible to changes.

Compared with other L2 solutions on the Ethereum, like OP Mainnet and Arbitrum, BI2 has lower gas fee, which means the gas fee will be more stable when traffic of Layer 2 increases. I listed the Ethereum EIP-1559 parameters as a reference. Arbitrum gas mechanism is based on the ArbOS, it is not applicable here.

Gas Parameter Differences

Parameter	opBNB value	Optimism value
Block gas limit	100,000,000 gas	30,000,000 gas
Block gas target	50,000,000 gas	5,000,000 gas
EIP-1559 elasticity multiplier	2	6
EIP-1559 denominator	8	50
Maximum base fee increase (per block)	12.5%	10%
Maximum base fee decrease (per block)	12.5%	2%

Metrics Differences

LIST	opBNB	Optimism	Arbitrum	BI2
Gas Token	BNB	ETH	ETH	BNB
VM	EVM	EVM	EVM	EVM
Gas Fee	$0.001	$0.05	$0.1	$0.00003
Block Gas Limit	100M(150M 2024Q1)	30M	32M	30M
Block time	1s	2s	0.25s(Min)	2s
Withdraw/ Finality	7 days	7 days	7 days	7 days
TPS (Transfer)	4500+	700+	4000+	2500+

OP Stack has some minor differences, so does BI2. I just listed the differences here for your reference, for details you can refer to the OP Stack documents.

INFO

Unlike BI2 and OP Mainnet, which have fixed blocktimes, Arbitrum has a variable blocktime that depends on the number and gas of transactions in a block. The more transactions and gas a block contains, the longer it takes to mine. The minimum blocktime on Arbitrum is 0.25 seconds, which means that the fastest block can be mined in a quarter of a second.