SEI
Sei is a high-performance Layer 1 EVM blockchain optimized for high-frequency applications with 400ms finality and ultra-low fees.
Overview
Sei is a Layer 1 blockchain built to support high-frequency decentralized applications, particularly in DeFi and trading sectors. It offers a unique parallelized EVM (Ethereum Virtual Machine) architecture that delivers sub-second finality of approximately 400 milliseconds and throughput exceeding 200,000 transactions per second (TPS). This performance enables developers to build web3 applications with near-instant settlement and ultra-low transaction fees, making it suitable for use cases that require speed and scalability beyond typical Ethereum capabilities.
The platform is designed with a parallelization engine that optimizes transaction execution across multiple cores, combined with a consensus mechanism called Twin Turbo Consensus that supports fast block production and finality. Sei also features SeiDB, a state access layer optimized for high throughput, and supports seamless integration with standard EVM tooling such as Hardhat and Foundry. Developers can deploy smart contracts with up to 100x better performance compared to Ethereum, while also leveraging interoperability with Cosmos SDK and IBC (Inter-Blockchain Communication) protocols.
Sei targets developers building decentralized finance (DeFi) applications, trading platforms, and other web3 apps that demand high throughput and low latency. It supports token standards including SEI native tokens, ERC-20, ERC-721, and IBC assets, and offers extensive developer resources including RPC endpoints, block explorers, wallet integrations, and AI tooling frameworks. The upcoming Sei Giga upgrade promises to further enhance gas execution bandwidth and scalability. Getting started involves setting up wallets compatible with MetaMask or Sei Global Wallet, deploying contracts using familiar EVM tools, and connecting to mainnet or testnet RPC endpoints documented in the official docs.
The Problem
Many Layer 1 blockchains struggle to provide the speed, scalability, and low transaction costs required for high-frequency decentralized applications, especially in DeFi and trading. Existing EVM-compatible chains often face slow finality times and high fees, limiting their usability for real-time, web2-like experiences onchain.
The Solution
Key Features
Twin Turbo Consensus
A consensus mechanism that enables sub-second finality and fast block production.
Parallelization Engine
Optimistic multi-core transaction execution to maximize scalability and developer flexibility.
SeiDB
State access layer optimized for high throughput and efficient data handling.
Seamless EVM tooling integration
Compatible with Hardhat, Foundry, and other Ethereum developer tools for easy onboarding.
Key Strengths
How Developers Use SEI
High-frequency decentralized trading platforms
Developers build trading dApps that require ultra-fast transaction finality and high throughput to support real-time order matching and settlement.
Scalable DeFi applications with low fees
DeFi projects deploy smart contracts that benefit from Sei’s low transaction costs and fast execution to improve user experience and reduce slippage.
Cross-chain token management and payments
Applications leverage Sei’s support for ERC-20, ERC-721, and IBC assets to enable fast, low-cost payments and token transfers across ecosystems.
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Pricing
Mainnet Usage | |
|---|---|
| Price (Monthly) | Free |
| Price (Annual) | Free |
| Messaging | N/A |
| Support | Community support via Discord and GitHub |
| Analytics |
Resources
Sei provides comprehensive developer documentation, including guides for deploying smart contracts, building frontends, and integrating wallets. The docs cover advanced topics like parallelization optimization, consensus details, and interoperability with Cosmos SDK. Community support is available through Discord, Telegram, and GitHub repositories.