X Debuts Grok-Powered Custom Timelines for Niche Topic Feeds

X has launched Custom Timelines, a feature that lets users pin a specific topic to the home tab. The rollout supports more than 75 topics.

The feature is available first to Premium subscribers on iOS. Android support will follow, according to X Head of Product Nikita Bier.

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Custom Timelines taps Grok to interpret every post on X and combines that signal with the platform’s personalization system. Bier said the feature took months to build and works best for topics users already engage with.

Users previously relied on the For You tab. However, now, Custom Timelines converts topics into algorithmic feeds around a single subject, such as art, finance, or sports. That structure could benefit crypto traders and analysts who want a dedicated feed without the noise of other markets.

“This was a huge undertaking across many months, so we’re excited for you take it for a spin,” Bier wrote.

In a separate post, Bier also revealed another tool that lets users snooze topics on the For You tab, giving them more control over their feed.

“Today we’re also rolling out a tool to snooze topics on your For You tab—if you ever want to crank up or turn down the slop. Rolling out now on iOS and Web for Premium subscribers,” the post read.

X Custom Timelines Build on Smart Cashtags Push

The launch follows Smart Cashtags, a tool that adds live price data for stocks and crypto tokens inside posts. X first released it on iOS in the United States and Canada before extending access globally.

Cashtags generated roughly $1 billion in trading volume during its first 48 hours. A partnership with Wealthsimple also lets Canadian users execute stock and crypto trades without leaving the app.

The latest rollout aligns with Elon Musk’s wider push to position X as an “everything app.” Android access is expected soon, and Bier has not disclosed when non-Premium users will receive the feature.

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