TREE NEWS update: Solana lowered its target slot time from 300 milliseconds to 250 milliseconds on September 18, the network’s third speed-up since August. The change is the third phase of the four-stage SIMD-0525 plan, which has cut slot times from 400ms at genesis through 350ms and 300ms. Overall network throughput did not rise because each slot carries proportionally less computation and data. No mainnet activation date is set for the final step to 200ms, contingent on stable validator skip rates.
Solana Cuts Target Slot Time to 250ms in Third Speed-Up Since August
Solana's slot-time reduction is largely architectural rather than a direct throughput gain, since each slot now carries proportionally less computation and data. The practical significance lies in latency-sensitive use cases, where faster finality matters more than raw capacity, and in the validator economics that must absorb the change. The open question is whether skip rates stay stable enough to justify the final step to 200ms, which currently has no mainnet activation date.
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