Solana's Alpenglow Upgrade to Boost Network Speed by 99% on October 21
Solana's highly anticipated Alpenglow upgrade, set to activate on October 21, 2026, promises to drastically reduce transaction finality time.
Solana's highly anticipated Alpenglow upgrade, set to activate on October 21, 2026, promises to drastically reduce transaction finality time. Solana (SOL) is trading at R$532 ($105.73), up 0.2% since this brief published. This is an original Criptano brief synthesising 3 outlets (Bitcoin.com, Cointribune, CoinCodex), plus live market data, as of Thu, 15 Oct 2026 23:00:01 UTC.
The Alpenglow upgrade represents a significant leap in Solana's performance, aiming to make the network more competitive for high-frequency applications by drastically reducing transaction finality. This could attract more decentralized applications and users to the Solana ecosystem.
- Alpenglow upgrade activates on October 21, 2026, replacing TowerBFT consensus.
- Transaction finality target reduced from 12.8s to 150ms, a 99% improvement.
- Vote transactions will be removed from blocks entirely.
- SOL price up 1.56% in 24 hours amid broader market neutrality.
All four outlets - Bitcoin.com, Cointribune, Decrypt, and CoinCodex - agree that Solana's Alpenglow upgrade is scheduled for October 21, 2026, and will reduce transaction finality from 12.8 seconds to approximately 150 milliseconds. They also concur that the upgrade will replace the current TowerBFT consensus system. However, specific technical details, such as the mechanism for removing vote transactions from blocks, are more prominently detailed in Decrypt's coverage.
Solana's upcoming Alpenglow upgrade, set to activate on October 21, 2026, is poised to significantly enhance the network's performance by drastically reducing transaction finality time. According to developers and official Solana documentation, the upgrade is expected to make finality roughly 99% faster than the current TowerBFT consensus system.
The current TowerBFT system has a transaction finality time of 12.8 seconds. With the Alpenglow upgrade, this will be reduced to a target of 150 milliseconds, as reported by Cointribune and CoinCodex. This improvement is expected to make Solana more competitive for high-frequency applications, such as decentralized finance (DeFi) and non-fungible tokens (NFTs).
Multiple outlets, including 
Bitcoin.com, Decrypt, and CoinCodex, confirm that the Alpenglow upgrade will replace the TowerBFT voting system. Decrypt further explains that the upgrade will remove vote transactions from blocks entirely, which could contribute to the significant reduction in finality time.
The Alpenglow upgrade is part of Solana's ongoing efforts to improve its network performance and scalability. The current consensus system has faced criticism for its high transaction finality time, which can be a bottleneck for applications requiring rapid transaction processing. The upgrade is expected to address these concerns and make Solana more attractive to developers and users.
In the current market context, Solana's native token SOL is trading at $105.48, up 1.56% in the last 24 hours, while the overall crypto market remains relatively flat with a total market cap of $2.83 trillion. The Fear & Greed Index stands at 53, indicating a neutral market sentiment. This suggests that while the market is not currently experiencing significant volatility, the anticipation of the Alpenglow upgrade could be contributing to Solana's modest price increase.
Since this brief published about 3 hours ago, Solana (SOL) has moved from R$531,19$105.48 to R$532,45$105.73 — +0.24%.
The chart plots SOL's price: grey is the move before this brief published, the vertical dashed line marks the moment it published, the horizontal dashed line is the price then, and the coloured area is the move since — from Criptano's market data (daily resolution). It shows what happened after the news, not that the news caused it; many factors move prices. Não é recomendação.
At today's peer-to-peer rate, 1 SOL ≈ R$536.69 (about $105.73), up 1.2% over 24 hours. The real itself trades about 0.8% above the official rate on the P2P market, so a Brazilian buyer's effective cost differs from the headline dollar price.
Live market data
Current prices for the asset in this story — live, source-stamped, updated every 15 minutes.
Figures and sectors in this story, checked live against on-chain aggregators · 15 de outubro de 2026.
Criptano reads these figures directly from on-chain aggregators (DeFiLlama, mempool.space) at build time — independent of what any outlet reported. Sector totals aggregate every protocol DeFiLlama tracks in that category. Values are live and will change.
Solana's Alpenglow Upgrade to Boost Network Speed by 99% — questions & answers
Quando a atualização Alpenglow será ativada?
A atualização Alpenglow está programada para ser ativada em 21 de outubro de 2026.
Qual é a melhoria esperada no tempo de finalização de transações?
A atualização Alpenglow visa reduzir o tempo de finalização de transações de 12,8 segundos para cerca de 150 milissegundos.
Como a atualização Alpenglow afetará o sistema de consenso da Solana?
A atualização substituirá o sistema de consenso TowerBFT e removerá transações de voto dos blocos.
How much is 1 Solana worth in real today?
About R$536.69 at the live peer-to-peer (P2P) USDT rate, which is what Brazilians typically trade at — equivalent to roughly $105.73. The real price moves with both SOL's US-dollar price and the USDT/BRL rate; use our Solana in real page for any amount.
Has Solana's price moved since this brief was published?
SOL is up 0.24% since this brief first published — trading at R$532 ($105.73) now versus R$531 ($105.48) at publication. Criptano re-checks this figure against CoinGecko and Binance every 15 minutes.
Which outlets reported this story?
This is an original Criptano brief that synthesises reporting from Bitcoin.com, Cointribune, CoinCodex, with the key figures cross-checked for agreement across them. It is not a copy of any one article — follow the source links above for the original reporting.
Original summary — not financial advice. This is an original Criptano brief that summarises a development reported elsewhere and adds live market data for context; it is not the original article and reproduces no part of it. Follow the source link above for full details. Crypto is volatile and high-risk — always do your own research.