Musk announces X timeline overhaul: new AI ranking model predicts time spent, retrieval surfaces fully-read posts
minchoi · x · 2026-10-20
- Elon Musk announced two important changes to X's timeline recommendations: a new AI/SI ranking model that predicts probable time spent much better, and a retrieval model trained to surface posts people read all the way through.
- He claims user active seconds is growing exponentially and hitting all-time highs almost daily.
- Creator minchoi replied that content quality has been improving.
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