Musk says X changed ranking to favor time spent

Elon Musk said on Oct. 19, 2026 that X changed its For You recommendations with a new ranking model meant to predict time spent on a post and a retrieval model meant to surface posts people read through. He said user active seconds are hitting highs. He did not say when the change went live, how time spent is weighed against other actions, or whether the models are in the public algorithm repository.

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