Solana Moves to Cut Transaction Finality to 150 Milliseconds

Solana is advancing plans to overhaul its consensus architecture under the Alpenglow initiative, a project meant to bring transaction finality close to instant. The upgrade would cut finality time from roughly 12.8 seconds to about 150 milliseconds. Activation is expected through Agave 4.3, with a target date of October. Anatoly Yakovenko, Solana's co-founder, said the faster finality window matters mainly for large-value payments. Ordinary users, he added, may not notice a significant change. He also stressed the difference between finality and transaction confirmation: finality provides a stronger guarantee that state changes cannot be reversed, and under the current TowerBFT consensus that guarantee takes about 12.8 seconds to achieve. U.Today reported the update.