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Flash Loans Comparison

Flash Loans Comparison is a public Solidity research repository that compares selected Ethereum flash-loan implementations using Foundry fork tests, gas reports and deployment metrics.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Flash Loans Comparison — OpenViST project profile in DeFi.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when reviewing or extending contract-level Ethereum flash-loan benchmarks and when the reported test configuration is relevant to your comparison.

Who it is for

  • Ethereum smart-contract developers studying flash-loan implementations
  • Researchers comparing reported function gas use and contract deployment metrics

Documented uses

  • Compare reported gas statistics for selected flash-loan functions.
  • Inspect deployment costs and contract sizes across implementations.
  • Review provider fee examples alongside benchmark results.
Before you choose

Requirements & limits

  • The README's reported test command uses an Ethereum fork RPC URL and 10 optimizer runs.
  • Results include per-function min, average, median and max gas, call counts, deployment cost and contract size.
  • Fee examples vary: Aave is shown with a WETH fee, Balancer and Euler are labeled free, and Uniswap examples list fee rates.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Run the documented fork-test gas report

Reproduce the README's stated Foundry test and gas-report procedure.

Before you start

  • The Flash Loans Comparison repository
  • Foundry's forge command
  • An Ethereum fork RPC URL available as ETH_RPC_URL

Steps

  1. Set ETH_RPC_URL to an Ethereum RPC URL suitable for fork testing.

  2. From the repository, run forge test --fork-url $ETH_RPC_URL --gas-report --optimize --optimizer-runs 10.

Expected outcome

Foundry test output with a gas report using the optimization settings shown in the README.

Guide limitations

  • The README's provider figures are reported results; running the command does not guarantee identical numbers.
  • The README does not specify a particular RPC provider or benchmark block.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
17 October 2026
Original website title
Jeiwan/flash-loans-comparison · Official homepage title · retained in its source language
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