# Comparison

#### stSUI vs vSUI / haSUI / afSUI

| Feature         | stSUI          | vSUI / haSUI / afSUI |
| --------------- | -------------- | -------------------- |
| Unstaking       | Instant (1 tx) | Cooldown required    |
| Depeg risk      | Lower          | Higher               |
| Reward model    | Exchange rate  | Exchange rate        |
| Multi-validator | Yes            | Varies               |

The big difference is instant unstaking. With other LSTs, if the token drops below peg on a DEX, arbitrageurs can't redeem fast enough to close the gap. With stSUI, redemption is one transaction, so the peg holds tighter.

#### AlphaFi Staked SUI vs SpringSUI Ecosystem LSTs

AlphaFi Staked SUI is forked from SpringSUI. The differences:

| Feature                      | AlphaFi Staked SUI              | SpringSUI                   |
| ---------------------------- | ------------------------------- | --------------------------- |
| Multi-validator optimization | Yes                             | Originally single-validator |
| Flash staking                | Yes                             | Not in base framework       |
| Redemption fee               | Can be redistributed to stakers | Retained by operator        |

Same lineage, different focus. stSUI's additions are aimed at DeFi composability and aligning the operator with stakers.


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