Last updated: November 7, 2026
Solana vs Ethereum finality differs in timing and consensus design. As of November 7, 2026, Solana’s Alpenglow upgrade targets finality in about 150 milliseconds, while Ethereum normally takes about 13-19 minutes to finalize a checkpoint, according to the networks’ published materials.
Quick answer
Alpenglow is active on Solana mainnet and targets roughly 150-millisecond finality. Ethereum generally finalizes in 13-19 minutes. Researchers are exploring faster Ethereum designs, but none has a confirmed mainnet activation date. These figures describe finality, not the time until a transaction first appears.
How to compare Solana vs Ethereum finality
Finality is when a blockchain treats a transaction or block as settled under its consensus rules. A transaction may appear in a block or be confirmed before reaching that threshold. The difference matters to applications, exchanges and people checking payment status.
To assess timing claims, distinguish these milestones:
- Identify the event. Slot production, transaction inclusion, confirmation and finality are separate. Block intervals alone don’t show when a transaction is final.
- Check network labels. Under Alpenglow, Solana’s confirmed and finalized commitment states describe the same state, and developers can use finalized directly.
- Compare consensus thresholds. Ethereum uses proof of stake and Casper-FFG. Ethereum.org says validators finalize checkpoints when votes representing at least two-thirds of staked ETH support a checkpoint pair.
- Separate live features from proposals. A research target isn’t a live network feature. Confirm that a change activated on mainnet before treating its projected timing as current.
Fees and a transaction’s place in a pending queue are separate from finality. Our explainer on how crypto transaction fees work explains why fees affect processing but don’t establish settlement by themselves.
Current finality at a glance
The Solana Foundation’s Alpenglow documentation and the Ethereum Foundation’s fast-finality research page provide this comparison. Ethereum.org explains its proof-of-stake timing and voting rules.
| Measure | Solana | Ethereum |
|---|---|---|
| Current finality reference | About 150 milliseconds targeted under Alpenglow | About 13-19 minutes under normal conditions |
| Consensus context | Alpenglow bundles validator votes into certificates | Casper-FFG finalizes checkpoint pairs |
| Block timing context | Target slot time is 200 milliseconds | 12-second slots and 32-slot epochs |
| Status as of November 7, 2026 | Alpenglow activated on mainnet on October 21, 2026 | Faster finality remains research, not a scheduled mainnet change |
The Solana figures measure different things. The Foundation calls 150 milliseconds Alpenglow’s target time to finality. Separately, the target slot time fell from 400 to 200 milliseconds in October 2026. Alpenglow also changes vote communication by bundling direct validator votes into certificates.
Ethereum’s 12-second slots and 32-slot epochs help explain why finality takes longer than one block interval. Ethereum.org says at least two-thirds of staked ETH must support the checkpoint pair; one-third voting against the majority can prevent finality. The 13-19-minute estimate applies under normal conditions, not as a fixed outcome for every transaction.
What the difference means for users and developers
Solana’s published finality target is much shorter, which can matter to applications that need to know quickly when a transaction has settled. But finality isn’t a complete measure of network quality. Fees, availability, security assumptions and application design also matter.
Ethereum’s longer current interval doesn’t mean its developers plan to leave finality unchanged. On October 21, 2026, researchers filed draft EIP-8453, called Decoupled Consensus. The draft said details remained undecided. CoinDesk reported an initial target of reducing finality from roughly 16 minutes to roughly four minutes, but the design was unfinished and had no activation date at publication. Ethereum’s roadmap calls faster finality active research, with no assigned fork.
That proposal isn’t a live Ethereum setting. The Ethereum Foundation’s Glamsterdam announcement described L1 scaling work, including enshrined proposer-builder separation and block-level access lists. It listed October 6, 2026, as the Sepolia testnet activation date; Hoodi and mainnet dates remained undecided. The announcement didn’t make Glamsterdam an activated finality upgrade.
Finality doesn’t mean a transfer can be reversed through routine customer service. For that separate issue, see our explanation of whether stablecoin payments can be reversed. Transaction ordering and pending status have their own mechanics, including the role of a crypto transaction nonce.
Common mistakes and risks
- Calling slot time finality. Solana’s 200-millisecond slot target and 150-millisecond finality target differ. Ethereum’s 12-second slot doesn’t mean every transaction finalizes in 12 seconds.
- Treating a target as a fixed outcome. Alpenglow’s figure is a target; Ethereum’s 13-19-minute range is an estimate under normal conditions. Network conditions and protocol behavior affect observed timing.
- Confusing research with deployment. Ethereum’s decoupled-consensus proposal and longer-range research aren’t current mainnet settings. Proposals can change, be delayed or never activate.
- Assuming finality removes every risk. It’s a consensus property, not protection against a mistaken address, compromised wallet, exchange failure, smart contract flaw, scam or regulatory change. Crypto assets are volatile and can lose value. Rules differ by country.
For payments or application design, a finality label is only one factor. A destination service may have its own acceptance rules, and a wallet display isn’t a substitute for understanding the network state it reports.
FAQ
Which network has faster transaction finality, Solana or Ethereum?
As of November 7, 2026, Solana has the shorter published target: about 150 milliseconds under Alpenglow. The Ethereum Foundation puts normal Ethereum finality at about 13-19 minutes.
Is Solana’s 150-millisecond figure its block time?
No. The Solana Foundation describes it as a target time to finality. Its target slot time is separately 200 milliseconds, so slot production and finality aren’t the same measure.
Will Ethereum reach finality in four minutes?
Four minutes was an initial target reported for an unfinished decoupled-consensus proposal, not a current mainnet feature or scheduled upgrade. Faster-finality work remains research, with no activation date in the cited materials.
Sources
- Alpenglow (solana.com)
- Fast Finality (consensus.ethereum.foundation)
- Proof-of-stake (PoS) (ethereum.org)
This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrencies are highly volatile; always do your own research before investing.
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