Ethereum’s Sepolia Test Targets Nearly 200 Million Gas Limit

Ethereum’s Sepolia test network activated Glamsterdam with a nearly 200 million gas target, giving developers a live setting to examine larger blocks without changing Ethereum mainnet’s current 60 million limit.

The upgrade went live at 9:53:36 a.m. ET (13:53:36 UTC) on Oct. 6 at epoch 353,024. The test applies only to Sepolia, and no specific activation date has been confirmed for Ethereum mainnet.

Gas measures the computational work needed to process transactions. A block gas limit caps that work, but a higher limit does not guarantee three times as many transactions or lower fees.

A review of 25 consecutive Sepolia blocks after activation showed gas use ranging from 47.1 million to 85.9 million, or about 24% to 43% of the available capacity. The observed blocks therefore used substantially less than the test target.

Glamsterdam brings Ethereum’s Amsterdam execution changes together with the Gloas consensus work. Its main scaling features include enshrined proposer-builder separation and block-level access lists, which are designed to give validators more information and time to process blocks in parallel.

The upgrade also changes how gas is accounted for when creating and accessing state. Those adjustments are intended to bring fees more closely in line with the hardware and storage costs faced by network operators as capacity grows.

Validators seeking to use the higher Sepolia setting must explicitly configure the 200 million-gas preference. Some client versions continue to default to 60 million after activation, so the test does not force every validator or block to use the larger limit.

The earlier Sepolia gas-limit test plan established the optional nature of the setting. Glamsterdam is expected on Ethereum mainnet in the fourth quarter of 2026, but the deployment date and eventual mainnet gas limit remain undecided.