CosmWasm bids farewell, as SEI commits wholly to the Ethereum Virtual Machine in its future endeavors.
In a groundbreaking move, SEI, the blockchain network, has proposed to exclusively adopt the Ethereum Virtual Machine (EVM) for its smart contracts. This shift, outlined in the Sei Improvement Proposal-3 (SIP-3), aims to simplify SEI's architecture and accelerate growth within the EVM developer ecosystem [1][2].
The transition promises numerous benefits. By offering a familiar, robust environment with extensive tooling and library support, SEI hopes to attract Ethereum developers who are in short supply in the Cosmos’ CosmWasm ecosystem [1][2]. The move also promises increased throughput and scalability, with the Giga upgrade aiming for up to 200,000 transactions per second (TPS) through the Autobahn consensus protocol, optimized for EVM execution [3].
Simplified interoperability and developer experience are other key advantages. Features like Dual Address Support, Precompile Contracts, and Pointer Contracts will allow seamless interaction between Cosmos-SDK tokens and EVM contracts, despite abandoning native CosmWasm execution [1]. This positions SEI competitively in high-frequency decentralized finance (DeFi) and gaming sectors that benefit from Ethereum's extensive ecosystem and optimized EVM tooling [3].
The initiative is linked to the development of SEI Giga, a high-performance chain that aims to consolidate the SEI ecosystem under a single standard. The new model eliminates the management of different addresses and smart contracts, simplifying the experience for users and developers [3].
The proposal must be approved by the SEI community for implementation. If successful, the transition will make life easier for developers by allowing them to use established tools like Solidity, Hardhat, and Metamask, widely known in the Ethereum ecosystem [2]. The shift towards EVM also offers reduced operational costs by eliminating infrastructure duplication [3].
The network will offer faster and more economical transactions with a smoother and more appealing experience for users. The coexistence of CosmWasm and EVM in SEI is causing difficulties for both users and developers, including managing two types of addresses and increased operational load. The transition towards a unified EVM environment offers a solution to these issues [3].
The dominance of Ethereum in the DeFi ecosystem, which accounts for over 70% of global transactions, drives this transition [3]. The shift towards EVM promises to reduce operational costs, attract Ethereum developers, and increase throughput and scalability, all of which are crucial for SEI's growth and competitiveness in the blockchain market [1][2][3].
By adopting EVM, SEI positions itself to become a relevant actor within the global DeFi ecosystem, backed by the power and versatility of the Ethereum Virtual Machine [2]. Since its launch, SEI has shown over 80% network activity in the EVM environment [3]. The proposal seeks to make SEI a more attractive destination for developers and users, fostering innovation and collaboration, and facilitating the arrival of new projects and integration with existing applications on Ethereum [1].
References: [1] SEI Blog. (2025, May). SEI's Journey to Exclusive EVM Support: Simplifying Architecture and Accelerating Growth. Retrieved from https://blog.sei.io/seis-journey-to-exclusive-evm-support-simplifying-architecture-and-accelerating-growth
[2] CoinDesk. (2025, May). SEI Proposes Exclusive EVM Support, Aims for Growth in DeFi Market. Retrieved from https://www.coindesk.com/sei-proposes-exclusive-evm-support-aims-for-growth-in-defi-market
[3] CoinTelegraph. (2025, May). SEI Announces Exclusive EVM Support, Aims to Simplify Architecture and Boost Growth. Retrieved from https://cointelegraph.com/news/sei-announces-exclusive-evm-support-aims-to-simplify-architecture-and-boost-growth
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