Aptos vs Sui, what is the difference?

Aptos vs Sui is a comparison of two proof-of-stake layer 1 blockchains with a shared origin. Decrypt reports that Aptos Labs and Mysten Labs, which built Sui, both spun out of Diem, the payments project Meta wound down. Both kept Move, a language first created there, but they changed it in different directions.

How does Aptos Move vs Sui Move differ?

On Aptos, Move programs read and write global storage arranged as a tree for each account address. A resource type marked with the "key" ability can be stored under an address, at most one of each type per address, using commands such as move_to and borrow_global.

Sui dropped that global storage. Every asset is an object with a unique ID. An object can be owned by one address, such as a coin or NFT, or shared so anyone can use it under the contract's rules. Each transaction lists the objects it touches up front, so the network can run non-overlapping transactions in parallel.

Aptos also executes transactions in parallel, using an engine called Block-STM, and has said an upgraded version is on its roadmap.

How do they reach consensus?

Aptos pairs a Byzantine fault tolerant protocol called Jolteon with Quorum Store, which spreads transaction data before ordering. In June 2025 Aptos added Baby Raptr, the first part of a newer design called Raptr, which it says cut finality latency by about 20% by reducing network hops from six to four.

Sui uses Mysticeti, built on a directed acyclic graph, or DAG. Many validators propose blocks at the same time, and Sui's docs say blocks commit after three rounds of messages. Sui cites sub-second finality for simple owned-object transfers and about 390 milliseconds for shared-object transactions.

Aptos and Sui comparison, how do fees and staking work?

Both charge gas in their own token. On Aptos, the execution part of the fee, priced in APT subunits called Octas, is burned. A separate storage fee is charged in fixed APT and fully refunded when the data is deleted.

On Sui, users pay computation and storage fees in SUI. The protocol sets a reference gas price each epoch. Storage fees go into a storage fund that pays validators for keeping data, and users get a partial rebate when they delete objects.

Aptos validators need at least 1 million APT, stake is locked for 14 days and renews automatically, and epochs last two hours. Sui holders delegate SUI to validators, epochs last 24 hours, and total supply is capped at 10 billion SUI. Both let stakers vote on protocol upgrades.

How do Aptos vs Sui vs Solana compare?

Solana treats all data as accounts rather than objects, and its programs are usually written in Rust, not Move. Sui's docs note that a single Sui transaction can chain up to 1,024 calls, while Solana programs can call each other only four levels deep. For the full picture, see Sui vs Solana and what is Solana.