Sei Labs Bets Big on Ethereum—Dumps Cosmos in High-Stakes EVM-Only Pivot

Another day, another blockchain divorce—this time it’s Sei Labs cutting ties with Cosmos to go all-in on Ethereum’s EVM. Because nothing screams ’institutional adoption’ like abandoning interoperability for the comfort of Ethereum’s walled garden.

The move shocks exactly zero crypto veterans who’ve seen this playbook before: when in doubt, hitch your wagon to ETH’s liquidity. Now watch the VC-funded hype machine spin this as ’strategic focus’ rather than capitulation to Ethereum’s gravitational pull.

Bonus jab: At least they didn’t rebrand as ’SeiFi’ and promise 1000x returns. Yet.

Sei’s EVM dream

SIP-3 will make Sei an EVM-only blockchain, phasing out all support for Cosmos-based features. This change WOULD streamline the transaction system and consolidate smart contract development under a single standard.

Sei Labs maintains that this is a forward-looking MOVE designed to reduce operational overhead and establish a more cohesive development environment.

The team expects that the move will allow Sei to better integrate into the broader Ethereum ecosystem and attract more developers seeking performance and simplicity.

Meanwhile, this architectural change will require adjustments from infrastructure providers and developers alike.

The blockchain network’s existing wallets, dApps, and services must shift to EVM-compatible formats, and applications built on CosmWasm must be redeployed.

Additionally, the network’s asset holders using Cosmos-native tools may need to migrate or off-ramp their holdings.

The team added:

“Sei addresses may still be used internally by the protocol (e.g. validator addresses), and Core functionality such as staking and governance will remain available through precompiles.”