An EVM-compatible, Cosmos-based Layer 1 designed for trading, Sei Network delivers sub-second finality and parallelized execution to power orderbook DeFi and high-throughput applications.
Sei Network is a Cosmos-SDK Layer 1 mainnet optimized for high-performance trading and real-time apps, with SEI used for fees, staking, and governance. It powers orderbook DEXs, perpetuals, and latency-sensitive games/social apps that need sub-second finality and IBC connectivity for cross-chain liquidity. Typical gas costs are a fraction of a cent, block finality is ~0.5 seconds, and throughput has been benchmarked at 20k+ TPS, supporting heavy on-chain activity without congestion.
Sei is distinguished by Twin-Turbo consensus (optimistic block processing and intelligent block propagation) plus frequent batch auctions to mitigate MEV, delivering sub-second (~500–600 ms) finality and low-latency price discovery. Its parallelized execution and Sei v2’s parallelized EVM (with the SeiDB storage engine) push throughput to 20k+ TPS in benchmarks while keeping fees sub-cent—far faster and cheaper than typical L1s with multi-second finality and higher gas. Native IBC interoperability enables seamless cross-chain routing and settlement across Cosmos, sustaining high activity for DeFi and real-time apps.
Sei Network uses SEI as the gas token for transaction fees. You can obtain SEI by bridging from other chains or purchasing using thirdweb Bridge.
To bridge SEI to Sei Network, connect your wallet to thirdweb bridge, select your source chain, choose the token you want to bridge, select Sei Network as the destination, enter the amount, and confirm the transaction. The bridge will handle the cross-chain transfer instantly.
To build on Sei Network you can use thirdweb, which provides an easy way to build, monetize and scale your apps, games or agents. You can find detailed guides and documentation on https://portal.thirdweb.com to get started quickly.
To add Sei Network to your wallet, you can connect your wallet and click on [Add to Wallet] button at the top of the page. Alternatively, you can add the network manually using the RPC URL and chain details and add it to your wallet's network settings.
To send SEI on Sei Network, ensure your wallet is connected to the Sei Network network, enter the recipient's address, specify the amount of SEI to send, review the gas fee, and confirm the transaction in your wallet.