The “For You” feed on X has long determined what appears in front of users, not the users themselves. Now, with the introduction of Custom Timelines, that dynamic is changing—at least for paying subscribers. Custom Timelines let Premium members pin a topic to their home tab, and X will build a personalized feed around that subject using Grok, X’s AI, together with the platform’s existing personalization signals.
According to X’s Head of Product, Nikita Bier, the feature works best for subjects users already engage with. At launch, subscribers can choose from more than 75 topics spanning categories such as art, sports, finance, and more. The rollout begins with iOS Premium subscribers, while Android support is expected to arrive later.
Alongside Custom Timelines, X is introducing a topic snooze option for the For You tab. This new control allows users to temporarily mute a topic that is dominating their feed without having to block accounts or make permanent changes. The snooze tool is being made available to Premium users on iOS and the web.
Why X Is Leaning Into Feed Customization
X has been integrating its AI, Grok, more deeply across the platform for some time. Grok already influences ranking decisions in the Following feed and provides summary features in Explore. Custom Timelines represent the next phase in that evolution, shifting Grok’s role from a passive ranking mechanism to a more active, personalized editor that crafts a focused feed around topics users care about.
From a strategic standpoint, Custom Timelines serve multiple goals. First, they provide Premium subscribers with tangible control over what they see, a feature many users have requested from social platforms. Second, they strengthen the perceived distinction between the paid and free tiers by offering a level of customization that free accounts do not currently receive. For subscribers who value a curated, topic-centered experience, Custom Timelines could be a meaningful reason to maintain or upgrade a subscription.
In practice, Custom Timelines aim to improve relevance and satisfaction. By letting users pin a topic, X filters the home tab to prioritize content related to that subject, mixing posts from followed accounts, recommendations, and AI-curated picks. The result is a feed that remains anchored to the user’s interests while still taking advantage of X’s personalization systems to surface fresh and relevant perspectives.
The topic snooze tool complements this by offering a lightweight, temporary way to step back from coverage that feels overwhelming. Instead of resorting to blocking or muting accounts, users can dampen the prominence of a topic for a chosen period and return to normal coverage afterward. That flexibility is useful for handling short-term spikes in attention, such as breaking news cycles or trending controversies, without making long-term changes to one’s network.
For now, there’s no announced timeline for whether Custom Timelines or the snooze tool will become available to free users. X appears focused on providing Premium members with exclusive features that demonstrate clear value, making feed control one of the platform’s most enticing perks. Observers and users will likely watch to see how adoption goes on iOS and how the company refines the feature before wider release.
Ultimately, Custom Timelines and topic snooze reflect a broader trend: platforms responding to demand for greater user agency over the content they consume. By blending AI curation with user-selected focus, X is betting that subscribers will prefer an experience that feels tailored and controllable rather than wholly algorithm-determined. If that appeal proves strong, expect more refinements and possibly broader availability in the months ahead.