Sei Network holders have approved SIP-6, the governance proposal to move the chain to the Autobahn consensus design. @SeiNetwork said the proposal passed, and @Sei_Labs will now start moving the chain to Autobahn. Holders committed about 2.36 billion $SEI to the proposal, with no votes opposed.
The vote clears a governance hurdle, but it does not switch the upgrade on. Autobahn is headed to mainnet once public testing and audits are finished.
What Autobahn Changes
Autobahn is designed to let validators produce blocks simultaneously rather than one after another, a change aimed at fast onchain trading. According to The Defiant's report on the vote, a single validator currently builds each Sei block, whereas under SIP-6 every active validator would run its own transaction lane. The Defiant also noted that the change is meant to reduce traders' reliance on one block builder for inclusion, and that Autobahn does not eliminate MEV, the value extracted through transaction ordering.
Per TokenPost, the design uses a stake-weighted rotating leader, and the order references certified blocks from those lanes. It is intended to support higher-throughput onchain order books, including those for tokenized stocks.
Where Autobahn Fits in the Giga Upgrade
Autobahn is the final piece of Sei's Giga upgrade. According to Sei's documentation, the mandatory v6.6 release brought the first execution (Ares) and storage (Eidos) components to mainnet on August 4. Ares became the default execution path for upgraded nodes, while the Eidos storage migration remains phased and operator-controlled.
Before activation, SIP-6 requires multiple independent security audits, resolution of all critical and high-severity findings, published validator hardware and bandwidth requirements, and a rehearsal against existing chain state, according to The Defiant. Activation must also follow a governance-authorized software upgrade process.
Sei's documentation lists a public-testnet target of 200,000 transactions per second. The Defiant reports that SIP-6 itself makes no fixed throughput or latency guarantee. Cryptonews has reported that Sei Labs has not confirmed a fixed mainnet launch date for the full Giga upgrade, and that the 200,000 TPS figure comes from an internal devnet rather than mainnet.
Sources
The Defiant via Cryptonews: Sei's Autobahn Consensus Vote Clears Quorum
TokenPost: Sei SIP-6 Vote Clears Quorum With 46.63% Staked Participation
Sei Docs: What Is Sei Giga?
Source: bsc.news. Adapted by NBTC.
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