[Crypto projects](https://revain.org/projects/) › Sui

# Sui (SUI): how it works, supply and reviews

## In short

- **Type**: Layer-1 smart contract platform with an asset-oriented (object) model
- **Maximum supply**: 10,000,000,000 SUI
- **Risks and caveats**: Most of the SUI supply was not circulating at launch and is still being released; the pace depends on the Sui Foundation.
- **Checked**: 31 October 2026

## Key facts

- **Ticker**: SUI
- **Official site**: [sui.io](https://sui.io/)

Key facts checked on 31 October 2026 against official sources.

## What is Sui

Sui is a layer-1 smart contract blockchain built around assets (objects) and the Move programming language. SUI is its native token, used for gas fees, staking with validators and on-chain governance votes.

## Network and consensus

| Parameter | Details |
|---|---|
| Type | Layer-1 smart contract platform with an asset-oriented (object) model |
| Consensus | Delegated proof of stake; validators run the DAG-based Mysticeti consensus protocol |
| Staking | SUI holders delegate stake to validators; stake changes take effect at the next epoch |
| Programming language | Move |
| Launched | Mainnet launched on 3 May 2023 with over 100 validators |

## Supply and issuance

| Parameter | Details |
|---|---|
| Maximum supply | 10,000,000,000 SUI |
| Initial distribution | About 5% of SUI circulated at mainnet launch; the rest is released on a schedule |
| Staking rewards | Rewards come from computation fees plus temporary stake subsidies that end as circulation approaches the cap |
| Storage fund | Storage fees go into a storage fund whose staking rewards pay validators for storing past data |

On 2026-10: 4,118,270,448 SUI in circulation, 10,000,000,000 SUI in total (source: [Sui circulation API linked from sui.io/token-schedule (month of October 2026)](https://sui-circulation.suiexplorer.com/api/current_month_sui_circulation)).

## What SUI is used for

- Paying gas fees for transactions
- Staking with validators in the proof-of-stake system
- Voting on governance matters such as protocol upgrades

## Who develops and governs Sui

- **Developer**: Mysten Labs wrote the original code and holds a treasury share of SUI
- **Foundation**: The Sui Foundation, an independent organisation, manages the Community Reserve (grants, delegation, research)
- **Governance**: SUI holders and stakers take part in on-chain votes on protocol upgrades
- **Open source**: Yes; the Sui code is published under the Apache License 2.0

## History

| Date | Event |
|---|---|
| 3 May 2023 | Sui Mainnet launches for public use with over 100 validators. |
| 15 July 2023 | The network processes over 65 million transactions in a single day. |
| December 2023 | Sui passes nine million active accounts. |

## Security and audits

- The Sui Foundation runs a bug bounty with HackenProof; critical protocol bugs pay $100,000 to $500,000.
- Sui works with outside firms for audits and formal verification of Move code, including Asymptotic and Certora.

## Risks and caveats

- Most of the SUI supply was not circulating at launch and is still being released; the pace depends on the Sui Foundation.
- Mysten Labs, the original developer, received a treasury share of the token supply.
- Staking rewards are partly funded by temporary subsidies that shrink over time.

## Official links

- Website: [sui.io](https://sui.io/)
- Docs: [docs.sui.io](https://docs.sui.io/)
- Source code: [github.com/MystenLabs/sui](https://github.com/MystenLabs/sui)
- Blog: [sui.io/blog](https://sui.io/blog)
- Token schedule: [www.sui.io/token-schedule](https://www.sui.io/token-schedule)

## Questions and answers

**What is Sui?**

Sui is a layer-1 smart contract blockchain with an asset-oriented model and the Move language. SUI is its native token.

**Who created Sui?**

Mysten Labs wrote the original code; the independent Sui Foundation supports the network and manages the Community Reserve.

**What is the maximum supply of SUI?**

10 billion SUI. In October 2026 about 4.12 billion SUI, or 41%, was in circulation.

**How does Sui reach consensus?**

Delegated proof of stake: SUI holders delegate to validators, which run the DAG-based Mysticeti consensus protocol.

**When did Sui mainnet launch?**

Sui Mainnet launched publicly on 3 May 2023.

## Sources

- [Sui — home page](https://sui.io/)
- [Sui — SUI token supply and schedule](https://www.sui.io/token-schedule)
- [Sui — Security](https://sui.io/security)
- [Sui Docs — Tokenomics](https://docs.sui.io/concepts/tokenomics)
- [Sui Docs — Consensus](https://docs.sui.io/concepts/sui-architecture/consensus)
- [Sui blog — Mainnet anniversary (3 May 2024)](https://www.sui.io/blog/mainnet-anniversary-milestones-innovation)
- [Sui README (GitHub)](https://raw.githubusercontent.com/MystenLabs/sui/main/README.md)
- [Sui SECURITY.md (GitHub)](https://raw.githubusercontent.com/MystenLabs/sui/main/SECURITY.md)
- [Sui LICENSE (GitHub)](https://raw.githubusercontent.com/MystenLabs/sui/main/LICENSE)
- [Sui circulation API](https://sui-circulation.suiexplorer.com/api/current_month_sui_circulation)

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Page updated: 2026-10-31

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Source: https://revain.org/projects/sui/