Sui (SUI)
Layer 1 smart-contract platform
Sui is a proof-of-stake blockchain launched in May 2023 by Mysten Labs, a team of former Meta engineers. It uses the Move programming language, and SUI has a maximum supply of 10 billion.
Profile last verified 23 September 2026. Live figures from CoinGecko. Not investment advice.
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What is Sui?
Sui treats assets as objects, which lets many transactions run in parallel and settle in under a second. Smart contracts are written in Move, a language designed to make asset handling safer.
Only part of the 10 billion SUI circulates; the rest unlocks on a schedule to investors, the team and the foundation.
Key facts
| Ticker | SUI |
|---|---|
| Type | Layer 1 smart-contract platform |
| Launched | May 2023 |
| Consensus | Delegated proof of stake |
| Supply | Maximum 10 billion SUI, released gradually through scheduled unlocks. |
| Official site | sui.io |
What SUI is used for
- DeFi and trading apps
- Games and digital collectibles
- Staking SUI
Main risks
- Large scheduled token unlocks add selling pressure
- Young network with a short track record
- In May 2025 validators froze funds stolen in a hack of a Sui exchange, showing they can coordinate interventions
Related guides
Sui: frequently asked questions
- What is the Move language?
- A smart-contract language first developed at Meta for the Diem project. It makes it harder to accidentally copy or lose assets in code.
- What is the SUI maximum supply?
- 10 billion SUI. A large share is still locked and unlocks over several years.
- Can I stake SUI?
- Yes, by delegating to a validator from a Sui wallet; rewards are paid each epoch (about a day).