Ethereum Glamsterdam Test Nears 200M Gas After 3x Capacity Increase

Ethereum’s Glamsterdam upgrade is showing its first major capacity results on the Sepolia testnet, with the block processing limit rising to nearly 200 million gas from about 60 million. The more-than-threefold increase is designed to test whether Ethereum can accommodate substantially more transaction activity without compromising network stability. Glamsterdam activated on Sepolia on October 6, while the Ethereum mainnet still has no confirmed activation date.

Gas measures the computational work required to execute transactions on Ethereum. When demand for block space rises, competition can increase transaction fees. A higher block gas allowance can provide more room for activity, although it does not automatically mean Ethereum can process three times as many transactions because Glamsterdam also changes the gas costs assigned to different operations.

Sepolia Blocks Leave Room to Scale

Early testing indicates that the new capacity has not yet been pushed to its limits. A review of more than 25 consecutive Sepolia blocks found gas usage between 52 million and 92 million, representing roughly 26% to 46% of the available allowance. None of the sampled blocks approached the 200-million-gas ceiling.

That gives developers useful room to examine how the network behaves as workloads increase. During a separate six-minute voting period, all 32 scheduled blocks were proposed, while 99.97% of eligible testnet stake voted toward finality, according to the ethPandaOps explorer.

Key early indicators include:

• 200M gas: approximate new Sepolia processing limit.
• 52M–92M gas: usage across more than 25 sampled blocks.
• 99.97%: eligible stake voting toward finality.
• 32 blocks: all scheduled blocks proposed during the observed period.

Glamsterdam Targets Faster Validation

Glamsterdam combines changes to Ethereum’s execution and consensus layers, including enshrined proposer-builder separation and block-level access lists. The latter record accounts and storage locations touched by transactions, allowing clients to prefetch data and perform some validation and state calculations in parallel.

The upgrade also changes gas pricing for state creation and state access. That means developers cannot assume existing gas costs will remain unchanged and may need to retest applications that depend on fixed gas assumptions.

The next public testing stage is Hoodi, which developers are tentatively targeting for October 27 if Sepolia testing produces acceptable results. The Ethereum Foundation has not yet set a mainnet activation date.

Conclusion

The Glamsterdam Sepolia test is giving Ethereum developers a larger environment to measure network capacity before considering a mainnet deployment. The nearly 200 million-gas limit is significant, but early blocks show that the testnet is operating well below that ceiling. The next challenge will be determining whether Ethereum can sustain heavier workloads while keeping validation requirements manageable for network operators.