YouTube ships prompt-built feeds as a side tab after testers feared messing up their algorithm

Wired's reporter asked for "Gooey macaroni and cheese recipe videos, Caleb Hearon clip compilations, and crystal singing bowl videos under 15 minutes", and the feed came back with exactly that ^[9]. YouTube then offered to tighten it, suggesting additions like "uploaded this month" and "without talking or commentary" ^[10]. Wired judged the tool better than a standard YouTube search at requests that combine several topics with a length cap or a mood ^[11].

Structurally, this is a tab. It sits under the search bar beside Music and Podcasts ^[6], viewers can save more than one of them ^[8], and a viewer who never types anything keeps a homepage ranked on inferred behaviour, because the default was not changed ^[19].

Emily Moxley, YouTube's vice president of product management, described the feature in the language of steering. "Users are always telling us that they want more control," she said ^[4]. "They want more ability to steer their algorithm. With custom feeds, we're giving them a natural-language way that they can do that. They can tell us exactly what they want" ^[5]. The team also built the literal version, a control that let users steer the overall recommendation algorithm, and shelved it ^[12]. "We found users were nervous and afraid to do that," Moxley said. "They were worried about messing it up" ^[13].

That second finding is the most useful piece of product research in the announcement. People asked for control, then declined it once it carried consequences for a feed they had spent years training, so YouTube shipped a place to experiment where nothing sticks ^[14]. Instagram did something close with Your Algorithm late last year, and Spotify with Prompted Playlists ^[16][17]. Wired's account does not include usage figures from the experiment or any creator-facing analytics for the new tab.

Two axes sort a control feature before anyone builds one. The first is scope, meaning whether the user's input changes the default surface or sits next to it. The second is reversibility, meaning whether one action restores the previous behaviour. Custom Feeds is next-to-the-default and one click from undo, and that combination costs the user nothing when a prompt goes wrong ^[7]. The persistent, hard-to-reverse quadrant is the one YouTube's own testers would not enter ^[13].

For channel strategy, the number worth requesting is the share of homepage impressions arriving from a feed the viewer typed. Until that figure exists, plan for the main ranked feed to carry the impressions.