X (formerly Twitter) has introduced Custom Timelines, a new Grok-powered feature that lets Premium subscribers pin up to 75 topics to their home tab for personalized content discovery.
X has launched Custom Timelines, a new feature that allows Premium subscribers to pin specific topics to their home tab for a more personalized content experience. The feature, which is currently in early access for iOS users, leverages Grok's AI capabilities to surface relevant content across more than 75 different topics.
According to X engineer Nikita Bier, who announced the feature on the platform, Custom Timelines represents "one of our biggest changes to 𝕏" and enables users to "dive deep into your favorite niche on X." The Grok-powered system appears designed to help users discover content beyond their existing network of followed accounts.
This move follows X's broader strategy of enhancing its Premium subscription offering with AI-powered features. The integration of Grok, X's AI assistant developed by xAI, suggests the company is positioning itself as a platform that combines social networking with intelligent content curation.
The feature's early access rollout to iOS users first is consistent with X's typical mobile-first approach to new feature deployment. While the company hasn't specified when Custom Timelines will become available to all Premium subscribers or expand to other platforms, the initial iOS release suggests a phased rollout strategy.
This development comes as X continues to evolve under Elon Musk's ownership, with ongoing efforts to differentiate the platform through AI integration and premium features. The Custom Timelines feature could help address user concerns about content discovery and relevance in an increasingly crowded social media landscape.
For Premium subscribers interested in accessing the feature, it appears to be rolling out gradually through the X iOS app, though availability may vary by user account and region.

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