Blend vs Aave: Lending on Stellar vs Ethereum
What is the difference between Blend and Aave?
Blend and Aave are both decentralized lending markets where users supply assets to earn yield and borrow against collateral. The main difference is the network and design: Blend is native to Stellar with immutable contracts, permissionless isolated pools, and mandatory per-pool backstop insurance, while Aave is the largest EVM lending protocol by liquidity and track record. Blend offers near-zero fees and no bridge risk; Aave offers scale and breadth.
Key takeaways
- Both are non-custodial lending markets — supply to earn, borrow against collateral.
- Blend = Stellar-native, immutable contracts, isolated pools with mandatory backstop insurance, near-zero fees.
- Aave = the largest DeFi lending protocol (~$14B+ TVL across 15+ chains), now rolling out V4.
- Blend avoids bridge risk (Stellar-native USDC); Aave spans many EVM chains.
- Spield builds fixed income on Blend’s real yield.
Blend vs Aave: side by side
| Blend | Aave | |
|---|---|---|
| Network | Stellar (Soroban) | Ethereum + 15+ EVM chains |
| Contracts | Immutable | Upgradeable via governance |
| Pool model | Permissionless isolated pools | Curated + isolated markets (V4: liquidity hub + spokes) |
| First-loss protection | Mandatory per-pool backstop insurance | Protocol safety/staking module |
| Fees | Fraction of a cent | Ethereum gas (higher, variable) |
| Bridge risk | None — native USDC | Varies by asset/chain |
| Liquidity / maturity | Growing on Stellar (~$80M+ TVL) | Largest in DeFi (~$14B+ TVL) |
| Rate type | Variable | Variable |
What is unique about Blend?
Blend runs on a group of immutable smart contracts, so its rules cannot be changed after deployment. Its distinctive features are permissionless isolated pools — anyone can create a pool with its own risk parameters, so risk is contained rather than shared across the protocol — and a mandatory backstop module, where every pool has an insurance fund of first-loss capital that absorbs bad debt before ordinary suppliers are touched. Being Stellar-native, it also settles with near-zero fees and no bridge dependency.
When would you use each?
Use Blend if you are on Stellar, want to lend or borrow USDC with minimal fees and no bridge risk, or want the real-yield base that Spield’s fixed income is built on. Use Aave if your assets are on EVM chains and you want the deepest liquidity and widest asset selection in DeFi lending.
Is Blend a good Aave alternative on Stellar?
Yes. Blend is the primary lending market on Stellar and plays the role Aave plays on EVM — supplying to earn variable yield and borrowing against collateral — with a Stellar-native design that adds immutable contracts, permissionless isolated pools, mandatory per-pool backstop insurance, and near-zero fees.
Does Spield use Blend or Aave?
Spield uses Blend. It supplies deposits into Blend on Stellar and turns Blend’s real, on-chain yield into fixed rates and tradable PT/YT tokens.