Solana Sets Oct. 21 Alpenglow Upgrade with 150ms Finality Target
Validators and application operators must prepare for a brief handoff as the upgrade replaces TowerBFT with Votor and aims for 150 millisecond finality.
- On Wednesday, October 21, 2026, the Solana network activated the Alpenglow consensus upgrade, targeting 150-millisecond transaction finality—roughly 40 times faster than today.
- Alpenglow replaces TowerBFT voting logic by bundling votes into certificates, cutting finality from about 12.8 seconds while replacing daily vote fees with a flat 0.8 SOL validator admission ticket per epoch.
- Despite the upgrade, Solana-focused ETFs recorded a net outflow of $6.7 million on October 19, though cumulative net inflows since launch remain at $1.55 billion, indicating sustained investor interest.
- Quicknode warned that transaction submissions may temporarily return a "node unhealthy" preflight error during the mainnet handoff at slot 459,653,000 following a 5,000-slot transition.
- SOL has outperformed XRP over the past 90 days despite both declining over the past year; Solana's outlook may improve if ETF outflows reverse following activation.
40 Articles
40 Articles
Solana Alpenglow Is Live: 85x Faster Finality, but DeFi Hasn't Moved Yet
Solana switched its consensus from TowerBFT to Alpenglow on 21 October, and Anza says the time it takes a transaction to become final has fallen from about 12.8 seconds to roughly 150 milliseconds (ms), the biggest change to how the network agrees on blocks since it launched in 2020. The upgrade went through cleanly, but two things about it are easy to misread, because Solana’s headline transaction count is about to fall by roughly 60% for reaso…
Solana’s Alpenglow, its biggest network overhaul since 2020, goes live Wednesday
Alpenglow will replace the voting system Solana has used since 2020, targeting roughly 150-millisecond finality after months of testing that included a failed migration and rollback.
Solana's Alpenglow Upgrade Is About to Go Live. Is SOL a Better Buy Than XRP?
Solana's biggest network overhaul in years goes live October 21, promising near-instant transaction finality, yet ETF investors keep pulling money out. Before the upgrade hits, one of these two coins is flashing signs of deeper trouble than the other.
Solana sets Oct. 21 Alpenglow upgrade with 150ms finality target
Solana’s developers have scheduled the Alpenglow consensus upgrade for Oct. 21, targeting roughly 150-millisecond finality while asking validators and application operators to prepare for changes during the mainnet handoff. Quicknode’s maintenance notice identifies Wednesday as the planned activation day, but…
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