X Launches Custom Timelines for Premium Users

X, the social media platform formerly known as Twitter, has launched a new feature called Custom Timelines, enabling Premium subscribers to create personalized feeds focused on specific topics. Announced by Head of Product Nikita Bier on April 21, 2026, the update uses the company's Grok AI to curate content, marking a significant enhancement to user control over their experience.

The feature introduces an "Add" option on the Home tab, alongside the existing For You and Following sections. Users can select from more than 75 topics, including technology, sports, finance, entertainment, gaming, space, science, and niche areas like robotics or real estate. Once pinned, a topic generates a dedicated timeline that displays relevant posts. Grok analyzes every post on the platform and combines this with the user's past interactions to tailor the feed, making it more precise for topics the individual already engages with.

"This feature allows you to pin a specific topic to your home tab," Bier stated in his announcement. "With support for over 75 topics, you can dive deep into your favorite niche on X. It's powered by Grok's understanding of every post with the algorithm's...