What Is Sui? A Blockchain Built By Meta's Failed Crypto Team

What problem Sui was built to solve, and where it came from

Sui is a Layer 1 blockchain (a base network other apps run on top of, the same category Ethereum and Solana belong to) built by a company called Mysten Labs, founded in late 2021 by five engineers who had previously worked on Meta’s (then Facebook’s) cryptocurrency project, known first as Libra and later renamed Diem. That project, an attempt to launch a global stablecoin backed by a consortium of major companies, was shut down in 2022 after sustained pressure from regulators worried about a company with billions of users controlling a currency. Sui’s founders, having built real technology for Diem before it was killed for reasons that had nothing to do with the engineering, took what they’d learned, most notably a programming language called Move, and built a new, independent public blockchain around it. Sui’s mainnet launched in May 2023.

If terms like “blockchain” and “smart contract” aren’t already familiar, What Crypto Actually Is covers the basics this guide builds on.

The mechanism, in plain language: objects instead of accounts

Most blockchains, Ethereum among them, use what’s called an account model. Your balance and activity are tracked the way a bank tracks a checking account: a single running number tied to your address, updated each time something happens. Sui uses a different approach called an object-centric data model. Instead of a single account balance, every asset you own on Sui, a token, an NFT, an in-game item, is its own distinct, independently tracked object with its own ID, closer to how a deed or a physical item is tracked than a number in a ledger.

That difference sounds abstract, but it has a concrete practical payoff: parallel processing. On an account-based chain, if two transactions might touch the same account, the network generally has to process them one after another to avoid conflicts, even if they’re actually unrelated. On Sui, because most objects are independent of each other, the network can often tell in advance that two transactions don’t touch the same object and process them at the same time, genuinely in parallel, rather than in a single queue. Sui pairs this with its own consensus mechanism, called Mysticeti, aimed at fast, low-latency confirmation. The practical result Sui advertises is high transaction throughput and quick finality, particularly for simple transfers that don’t share objects with other pending transactions.

Sui uses Move, the smart contract programming language originally built for Diem, rather than Solidity, the language most Ethereum-ecosystem chains use. Move was specifically designed with digital assets as a first-class concept in the language itself, which its designers argue makes certain classes of bugs, like accidentally duplicating or losing track of a token, structurally harder to write than in more general-purpose smart contract languages.

Strengths, and real limitations

Sui’s genuine technical strength is that the object model and parallel execution are a real, coherent design choice, not just marketing, and they address a real bottleneck that account-based chains have struggled with. Coming from a team that had already built and shipped real blockchain infrastructure at Meta’s scale before Diem was shut down is also a legitimate credential, even though the project itself never launched.

The honest limitations start with token distribution. Sui’s total supply is fixed at 10 billion SUI, and a meaningful share of that supply was allocated to Mysten Labs and early contributors rather than sold publicly or distributed through mining or staking rewards from day one, a structure common among venture-backed Layer 1s but different from Bitcoin’s mining-based distribution. This became a public dispute in 2025 and 2026, when an outside analyst argued that Mysten Labs and a small circle of founders effectively controlled a very large share, by some estimates over 80%, of the staked SUI supply, since founder and foundation allocations are staked and therefore participate in governance and earn yield. Sui and Mysten Labs disputed the framing, pointing out that locked foundation and investor tokens are held by third-party custodians under a public release schedule and that Mysten Labs doesn’t control the Sui Foundation’s treasury directly. Reasonable people can read that exchange differently, but the underlying fact, that token concentration among founders and early backers is real and worth checking yourself rather than taking either side’s word for, isn’t in dispute.

Sui also competes directly with Solana and other high-throughput chains for the same use cases (fast, cheap on-chain trading and gaming), and its ecosystem, while growing, is still considerably smaller by total value locked than the leading chains it’s positioned against. See What Is Solana? for a look at a chain making a similar speed-first pitch with a very different technical approach and its own tradeoffs.

How to actually trade or hold it

SUI trades on spot markets at most major exchanges; see our exchange comparisons for availability and fees. If you’re new to buying crypto, Spot Trading Explained covers order types and custody basics before committing real money. Given the legitimate questions around token concentration described above, it’s worth checking a current, independent breakdown of circulating versus locked supply before treating SUI’s market cap or trading volume as the full picture.

For the current price, market cap, and 24-hour chart, see our live Sui page.

Frequently asked questions

Is Sui connected to Facebook or Meta? Not officially or corporately. Sui is an independent project built by Mysten Labs, a separate company. Its founders previously worked at Meta on the Diem stablecoin project before Meta shut it down in 2022, and they carried some of that technical work, particularly the Move language, into Sui.

What’s the actual difference between Sui’s object model and a normal blockchain account? An account-based chain (like Ethereum) tracks one balance per address that updates with each transaction. Sui tracks each asset as its own separate, independently owned object. That lets the network process unrelated transactions on different objects at the same time instead of one after another, which is the main source of its speed advantage.

Do the founders really control most of SUI’s supply? Founders, Mysten Labs, and early backers hold a substantial share of total supply, which is normal for a venture-funded Layer 1 but has drawn specific criticism for how much of the currently staked supply that represents. Sui disputes the most alarming version of that claim; independent verification of current locked versus circulating supply is worth doing yourself rather than relying on either side’s framing.

Is Move a totally new programming language? It’s relatively new but not built from nothing. It was originally created for Meta’s Diem project and was designed specifically to treat digital assets, tokens, NFTs, and similar objects as built-in language features rather than something developers have to carefully code around, which is meant to reduce certain categories of smart contract bugs.

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