sUSD (Synthetix) is the Synthetix ecosystem's native synthetic dollar. Backed by SNX collateral, deep Optimism DeFi integration, Kwenta support. Historical peg wobbles; volume much smaller than tier-1 stables.
What sUSD offers
- Long-standing synthetic dollar (since 2018)
- Backed by SNX overcollateralization
- Native to Optimism DeFi
- Deep Kwenta integration
Verdict
sUSD is Synthetix's synthetic dollar. Best if you're already in Synthetix/Kwenta ecosystem; otherwise other stables are more versatile.