X launches Custom Timelines powered by Grok, letting users pin niche topics to their home feed with AI-driven personalization, rolling out…

Rickler Feed (@rickler_feed), Apr 22, 2026, 00:03 UTC

X launches Custom Timelines powered by Grok, letting users pin niche topics to their home feed with AI-driven personalization, rolling out first to Premium users on iOS - 𝕏/@nikitabier 🏷️ AI, Grok, Launch 🕵️ @Danicjade

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