X Launches Custom Timelines Powered by Grok, Turning AI Curation Into a Premium Feature

X now lets Premium subscribers pin topic-specific timelines to their home feed, each curated by Grok's understanding of every post on the platform.

X launched Custom Timelines on Tuesday, a feature that lets users pin any topic to their home feed and receive a personalized, AI-curated stream powered by Grok, as @nikitabier announced. The feature is initially available to Premium subscribers on iOS.

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