StarkWare CEO Eli Ben-Sasson stated that Starknet aims to become a fully quantum-resistant network by 2027, whereas Ethereum developers target initial protocol-level protections by 2029

From the articleStarknet Opens Its First Vote on Becoming an Independent Post-Quantum Layer 1 - UnchainedAlso in Starknet opens vote on leaving Ethereum as the L2 model frays - Cryptopolitan, STRK Surges 25% as Starknet Votes on Ethereum 'Divorce' for Quantum Security - U.Today, Starknet Opens Vote on Potential Ethereum L2 Exit