Gas Killer could cut the gas cost of an Aave V3 borrow by 14–64%: about 25% on a typical borrow, and up to 405,000 gas on borrowers with many assets. We measured this on real Ethereum mainnet borrows in October 2026. The saving comes from the price reads in the health-factor check. The Aave V3 Pool handles about 1,090 borrows a day, so the saving recurs on every one.
What we measured
All six borrows we measured save gas, from 14% to 64%. They are V3 borrows, picked across the range of borrow sizes, from a smaller-than-typical borrow up to the largest in an 8-hour window. Borrows that cost more save more, because they check prices for more assets.
| Transaction | Function | Gas today | Gas saved | Saving |
|---|---|---|---|---|
| 0xd7786c4e… | borrow | 636,268 | 405,515 | 63.7% |
| 0xb9e0a6c3… | borrow | 439,284 | 208,531 | 47.5% |
| 0xf98c58f4… | borrow | 381,980 | 150,228 | 39.3% |
| 0x5c713687… | borrow | 333,343 | 101,507 | 30.5% |
| 0x89123090… | borrow (typical size) | 306,943 | 75,143 | 24.5% |
| 0x97151cb4… | borrow | 268,466 | 37,821 | 14.1% |
Aave V4
Aave V4 borrows save 17–46%, from the same health-factor price reads. We measured five V4 borrows from October 2026, sent to the Main and Bluechip spokes.
| Transaction | Spoke | Gas today | Gas saved | Saving |
|---|---|---|---|---|
| 0xea1e8879… | Bluechip | 488,737 | 225,920 | 46.2% |
| 0x76c09b0b… | Main | 369,235 | 128,269 | 34.7% |
| 0x557d5025… | Main | 339,583 | 114,701 | 33.8% |
| 0x26456699… | Main | 252,804 | 53,686 | 21.2% |
| 0xa6415540… | Main (typical size) | 279,475 | 48,937 | 17.5% |
In V4 each spoke would use the Gas Killer SDK. The hub stays as it is: its work is mostly storage writes and the token transfer, which have to be applied anyway.