Solana just shaved a slice off the clock. The network reduced its slot time to 350 milliseconds, the first such reduction since Solana’s inception, according to reporting by Cointelegraph citing Solana Foundation vice president of technology Jacob Creech.

“We’re in a new era of 350ms. Next stop, 300ms,” Creech wrote in a Friday post on X. At the time of Cointelegraph’s report, average slot times on the network stood at 360ms, already down from Solana’s original 400ms target.

A staged march to 200ms

The reduction is not a one-off tweak but the first step of a roadmap. In June, the Solana Foundation shared plans to bring slot times down from 400ms to 200ms, arguing the change would improve latency and speed up confirmations across the network. Reaching that target means three further 50-millisecond reductions after this one.

All four stages are targeted for mainnet activation in Agave v4.2, a validator client developed by Anza, though Cointelegraph notes the schedule remains tentative. The underlying proposal, SIMD-0525, which established the shorter slot times, was approved and merged on May 14.

Why milliseconds matter

Slot time is the cadence at which a blockchain produces new blocks, so trimming it tightens the interval between a transaction being sent and being confirmed. For a network that markets itself on speed and hosts latency-sensitive activity like trading and payments, incremental cuts here compound into a noticeably snappier user experience.

The move also underscores how Solana’s upgrade process now runs through formal, community-reviewed proposals and a dedicated validator client rather than ad hoc changes. If the remaining reductions land as planned, Solana will have halved its block cadence from the original 400ms design to 200ms — a meaningful engineering milestone for a network still measuring its progress in fractions of a second.

Written for Red Robot with AI assistance and human editing. Based on reporting by Cointelegraph.