Arbitrum Guide 2026: The Leading Ethereum L2 for DeFi
Arbitrum is the largest Ethereum L2 by TVL. Here is how to use Arbitrum, what protocols to access, and why it dominates Ethereum Layer 2 DeFi.
Arbitrum One is the largest Ethereum Layer 2 by DeFi TVL — hosting $10B+ in assets including the largest instances of Uniswap, Aave, GMX, Curve, and dozens of other protocols. Post-Dencun upgrade, transaction costs on Arbitrum have dropped to $0.001-0.10, making Ethereum DeFi economically accessible to anyone.
Key Arbitrum Protocols
- Aave V3 Arbitrum: largest instance of Aave across all networks — USDC lending at 5-7% APY
- Uniswap V3 Arbitrum: deepest DEX liquidity on Arbitrum, essential for token swaps
- GMX V2: dominant derivatives protocol on Arbitrum — perpetuals and options without KYC
- Radiant Capital: cross-chain lending with ARB rewards — borrow against ETH, get USDC
- Camelot DEX: Arbitrum-native DEX with concentrated liquidity and ve tokenomics
The Arbitrum Ecosystem
- ARB token: governance token for Arbitrum DAO — $2B+ treasury managed by community vote
- Arbitrum Nova: separate chain for gaming/social apps — even lower fees, different trust model
- Arbitrum Orbit: create custom L3 chains on top of Arbitrum — enterprise customisation
- Stylus: run Rust/C++ smart contracts on Arbitrum — 10x gas savings vs Solidity for compute-heavy apps
Accessing Arbitrum via Steyble
Steyble's multi-chain interface provides full Arbitrum access: swap, lend, stake, and access DeFi in one click. Bridge from Ethereum to Arbitrum via Steyble cross-chain swap (5-10 minute process). The yield dashboard shows Arbitrum Aave and Curve opportunities alongside all other chain options — compare APY across chains and deploy to the best available yield with no manual bridge interaction required.