The proposed change would slash confirmation times from roughly 12.8 seconds to a fraction of a second. Solana has begun testing a network upgrade aimed at dramatically shortening the time it
The proposed change would slash confirmation times from roughly 12.8 seconds to a fraction of a second.
Solana has begun testing a network upgrade aimed at dramatically shortening the time it takes for transactions to become final. According to CoinDesk, the goal is to cut finality from roughly 12.8 seconds down to about 150 milliseconds. The Cryptonomist reported similar details, describing the upgrade as targeting near-instant settlement.
Finality refers to the point at which a transaction on a blockchain is considered irreversible. Shorter finality times generally reduce the risk of chain reorganizations and give applications more confidence that a confirmed transaction will not later be reversed. For a blockchain like Solana, which markets itself on speed and low fees, finality has long been a focal point of comparison against rivals.
The current finality window of around 12.8 seconds is already fast relative to many older blockchain networks. Still, it remains slow compared to traditional financial infrastructure, where trades and payments can settle in milliseconds. A reduction to 150 milliseconds would bring Solana's settlement speed closer to that of centralized trading systems.
Neither report detailed the exact technical mechanism behind the upgrade, though such changes typically involve modifications to how validators vote on and confirm blocks. Testing at this stage usually takes place on a testnet or through simulated network conditions before any consideration of a mainnet rollout. The timeline for when, or whether, the upgrade might reach Solana's main production network was not specified in the available reporting.
Solana has positioned itself as a high-throughput alternative to older blockchains such as Ethereum, emphasizing low transaction costs and fast processing. The network has attracted decentralized exchanges, payment applications, and other services that depend on rapid transaction confirmation. Faster finality would directly benefit these use cases by reducing the latency between when a user submits a transaction and when it can be treated as settled.
The testing phase represents an early but notable step in Solana's ongoing effort to refine its underlying architecture. Blockchain upgrades of this scale typically undergo extensive testing and review before developers consider them ready for broader deployment. Details on validator participation, testnet results, or a formal proposal timeline were not included in the current reporting.
A move toward sub-second finality could reinforce Solana's appeal among developers building trading platforms, payment systems, and other applications where transaction speed directly affects user experience. Faster settlement can also reduce counterparty risk for exchanges and market makers operating on the network.
Any market reaction is likely to depend on confirmation that the upgrade performs reliably under real network conditions, including periods of high transaction volume. Until the testing phase concludes and further technical details emerge, the practical impact on trading activity, developer adoption, or SOL token pricing remains a matter of a market context that reporting so far has not addressed.
The testing marks an early stage in Solana's effort to significantly reduce transaction finality times, with further details expected as the upgrade progresses toward potential deployment.
Finality is the point at which a transaction is considered permanent and cannot be reversed or altered by the network.
Reports indicate the target is a reduction from about 12.8 seconds down to roughly 150 milliseconds.
No. According to the available reporting, the upgrade is currently in a testing phase, with no confirmed timeline for mainnet deployment.
Shorter finality reduces the risk of reversed transactions and benefits latency-sensitive applications such as trading platforms and payment systems.
Update 23 Sep 2026, 07:19 UTC · added by Coindoo, crypto.news
Coindoo reports that despite the upgrade’s progress, Anza’s rollout tracker shows the public testnet activation for Alpenglow is still pending, with no activation epoch yet published; the feature gate is carried in Agave v4.3. Separately, crypto.news specifies that Alpenglow will replace the existing TowerBFT consensus mechanism as part of the overhaul.
Originally reported by AltcoinGordon, written by Sophia Bennett. Republished with permission.
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