Solana is preparing for a major overhaul that could make its famously fast blockchain even faster and significantly easier to run. In its “Crypto Monthly Recap for September 2025” research report published Oct. 3, global asset manager VanEck says Solana’s upcoming Alpenglow upgrade marks the biggest change to the network’s core software since launch.
The firm calls it “the largest upgrade to Solana’s consensus in its history,” pointing to six key changes that together promise faster performance, lower costs, and greater reliability. For readers less familiar with Solana’s design, Alpenglow essentially changes how the network’s thousands of validators agree on which transactions are valid. That process, known as consensus, is being streamlined so data moves through the system more efficiently and validators can operate with less friction.
VanEck highlighted several major improvements coming with Alpenglow. The upgrade will dramatically reduce transaction finality from around 12 seconds to about 150 milliseconds, roughly the time it takes to blink. This makes trades, payments and app interactions feel instantaneous, bringing Solana closer to web-level responsiveness.
The upgrade also moves validator voting off-chain, addressing a current bottleneck where validators submit thousands of small transactions to vote on every new block. Alpenglow allows validators to exchange votes privately and later post a single proof, clearing space for regular user transactions and helping keep network fees low.
Validator costs will be simplified through a new Validator Admission Ticket system, replacing transaction fees for every vote with a single submission each cycle.
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