What is Sei (SEI)?

By CMC AI
13 November 2026 08:42PM (UTC+0)
TLDR

Sei is a Layer 1 blockchain built for fast financial apps and decentralized trading; SEI is its native token.

  1. Sei aims to make onchain trading and other apps execute quickly and at low cost.

  2. SEI is used for network fees, staking to help secure the network, and governance.

Deep Dive

1. Purpose and technology

Sei is a blockchain developers can use to build decentralized applications, including trading and finance services. It supports Ethereum compatible apps, so developers can use familiar Ethereum tools.

Its parallel execution design can process independent transactions at the same time, rather than handling every transaction one by one. The project describes Sei as a high performance Layer 1; actual speed can depend on network conditions and the work a transaction requires. (Sei overview, Sei source code)

2. SEI token

SEI is the network’s native token. It pays transaction fees, can be staked with validators that help confirm transactions, and gives holders a role in onchain governance. (SEI white paper)

Conclusion

Sei is a blockchain designed to support fast, Ethereum compatible financial applications, while SEI helps pay for and participate in the network. How effectively can Sei’s technology support useful trading and finance apps as the network develops?

CMC AI can make mistakes. Not financial advice.