Solana’s new consensus protocol, Alpenglow, goes live on the main network, replacing the TowerBFT system that has run the blockchain since 2020. Reports say the change significantly reduces transaction finality time, with figures commonly cited around 150 milliseconds, compared with a longer finality window under the prior approach.
Across outlets, the upgrade is described as Solana’s most major consensus overhaul since the network launched. Decrypt and CoinDesk both frame Alpenglow as a large, recently tested migration, noting a handoff on the live network and months of testing that included a failed migration and rollback. Cointelegraph emphasizes performance goals—near-immediate settlement and faster application responsiveness—while PR Newswire highlights promotional language about speed and deterministic finality.
Details largely align on what changes: Alpenglow retires TowerBFT and targets sub-second finality. The main differences are how strongly each outlet stresses ambitious scale, determinism, or specific performance targets, rather than the core facts of the launch and protocol replacement.
