GoKawiilBluesky isn’t the only company leaning into AI to help build custom feeds, it seems. Amid a slate of recent product releases, X this week announced the launch of Grok-powered Custom Timelines, which let you dive into one of over 75 specific topics through curated feeds that can be pinned to your home tab.
The company touted the feature as one of the “biggest changes” to the app to date, saying it uses Grok’s AI to not only build these custom timelines but also personalize them for individual users.
The custom feeds are arriving at the same time as X has announced it is shutting down X Communities, a feature that had allowed people to create their own member-based communities around various topics, but saw declining use.
Today we're announcing two product changes for organizing communities on X:
1. XChat now supports joinable links for groupchats. Create a public link & share direct to Timeline. With support for 350 members per chat (and growing), Groupchat Links are the fastest way to bring… pic.twitter.com/GNcRB99Opc — Nikita Bier (@nikitabier) April 22, 2026
On X, the company’s head of product, Nikita Bier, noted that the custom timelines work even better for topics you already engage with. A rep for X explained to TechCrunch that the custom timelines aren’t based on traditional signals like keywords or hashtags. Instead, the company said, Grok reads every post, understands it, and then adds topic labels. This is made possible by the AI models from Grok owner xAI, the company that acquired X last year, tying the two services even closer together.
At launch, the custom timelines are available only to Premium subscribers on iOS. Android support is in the works. All Premium subscription tiers can access this feature.
Image Credits:screenshot from X
To use the feature, simply scroll to the right past your “For You” and “Following” feeds on X, as well as any other personal lists you may have pinned. Then tap the plus ( + ) sign to choose which custom timelines you want to pin to your home tab. (Choose wisely, because you can only pin up to 10 topics or lists!)
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