X hits all-time high of 500B daily active seconds after rolling out new ranking and retrieval models
XFreeze · x · 2026-10-20
X rolled out two timeline upgrades: a new SI ranking model that better predicts time spent, and a retrieval model trained to surface posts people read all the way through. Daily user active seconds in 2026 now sit far above every prior year and recently crossed 500 billion, climbing steeply since August.
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