One Is Fast, the Other Is Big: SUI vs SEI Explained

• SUI ranks #12 by market cap, SEI sits at #68 with Cosmos SDK focus
• SUI offers $1.6B TVL, Phantom Wallet support, and high DEX volume
• SEI boosts DeFi access via EVM + CosmWasm and native order book

According to side-by-side data from Our Crypto Talk, SUI holds a dominant market position over SEI. As of now, SUI ranks #12 in overall market cap with a valuation of $11.9 billion, while SEI stands at #68 with a $1.1 billion market cap. This wide gap in capitalization highlights stronger institutional backing and broader adoption in SUI’s ecosystem.

SUI also leads in community size with 1 million X followers compared to SEI’s 791,000. However, SEI has a larger circulating supply ratio—53% versus SUI’s 33%—which could indicate more accessible liquidity for SEI holders.

These numbers show SUI as a well-capitalized, institution-backed blockchain with stronger market presence. SEI, though smaller, shows high circulation and growing momentum.

Technology and Architecture: SUI Is Bold, SEI Is Optimized

SUI offers a radical shift in architecture. It uses an object-based model instead of the standard account-based one. This enables true parallel execution and faster processing, especially for simple transactions. Sub-second finality is supported by the Narwhal and Mysticeti consensus model. Its design favors scalability and low fees.

Meanwhile, SEI takes a different route. Built on Cosmos SDK, SEI introduces its own Twin-Turbo Consensus for ultra-fast finality. SEI also boasts the first native central limit order book for DeFi. Its V2 upgrade brings SeiDB and enhanced parallel execution.

SUI represents a fresh design tailored for multi-sector use, while SEI improves on a proven framework with focused speed optimizations for DeFi and trading.

Developer Tools and Ecosystem Growth

SUI’s development stack uses Sui Move, a Rust-based language that emphasizes safety and precision. Although it has a steep learning curve, it reduces bugs. Over 1,400 monthly developers now work with SUI. It does not support Ethereum Virtual Machine (EVM), meaning Solidity-based code must be rewritten.

SEI supports CosmWasm and EVM, making it more accessible for Ethereum and Cosmos developers. The ecosystem benefits from a $10 million incentive fund and IBC (Inter-Blockchain Communication) compatibility.

This makes SUI ideal for developers willing to learn a new, more secure system. On the other hand, SEI is easier to adopt for existing projects in the Ethereum or Cosmos environments.

Trading Activity and Technical Support Levels

Meanwhile, chart shared by Michaël van de Poppe shows SEI maintaining its support level after a recent decline. The key phrase on the chart, “area to hold onto before the next leg upwards,” signals consolidation.

SEI price currently trades near the highlighted support zone. The chart indicates multiple touchpoints in this zone over the past few weeks, suggesting strong buy-side interest. If SEI maintains this level, a rebound may follow.

Volume activity remains steady, and RSI sits in neutral territory, suggesting no overbought or oversold conditions. The market appears to wait for confirmation before the next directional move.

SUI shows broader application with $1.6 billion in total value locked (TVL), $265 million in average daily DEX volume, and integrations with USDC, VanEck, and Phantom Wallet. It has a presence in real-world assets (RWAs), NFTs, and gaming.

SEI’s ecosystem is more niche, with $492 million TVL and trading-focused platforms like Vortex and DragonSwap. It is expanding in gaming through Galxe and the Creator Fund, and leverages Cosmos-wide interoperability.

SUI’s broad DeFi and enterprise appeal contrast with SEI’s targeted growth in high-speed trading and Cosmos-native apps.