How the YouTube Shorts algorithm works, by what YouTube has published

What does YouTube say its recommendation system uses?

Most of what YouTube names comes from the viewer. The How YouTube Works page says the system uses a person’s viewing behavior, likes, dislikes, subscriptions and feedback, satisfaction surveys included, and that it is designed “to anticipate and meet a user’s needs.” Each of those is something the viewer did.

One input sits on the creator’s side. YouTube says the system also considers the reputation and the quality of a channel, and that it uses external evaluators. The page gives no weight for any input and no definition of channel quality.

Search follows its own rule. YouTube ranks search results on relevance, engagement and quality, and weights the three differently by type of search. Shorts turn up in those results across YouTube, including on most smart TVs and consoles.

None of this mentions Shorts. The How YouTube Works page covers recommendations in general, and none of the YouTube pages cited here gives a Shorts-specific version, so this guide reads it as the closest account of how the Shorts feed chooses videos. Whether the Shorts feed uses the same inputs with different weights is not covered on those pages.

Where does YouTube show Shorts?

YouTube answers this one on its Shorts help page, under “How will viewers find my Shorts?”. The list: the Shorts tab and Shorts feed, where viewers scroll a stream of videos; search results across YouTube, including most smart TVs and consoles; the YouTube homepage; your channel homepage; Subscriptions; and notifications.

The figure groups those places by how a viewer gets there. The grouping is ours. Scrolling surfaces have only the general recommendation page behind them, search has a published ranking rule, and for the channel homepage, Subscriptions and notifications the pages cited here say nothing about order.

Your own split sits in YouTube Studio, where the traffic source report shows how viewers found each video. Reading that report beside engaged views, to see where a Short lost people, is the job of the diagnosis for Shorts that are not getting views.

Hashtags add one more route. YouTube says a hashtag in a title or description links to a results page of videos that share it, and the guide to hashtags on YouTube Shorts covers YouTube’s hashtag rules.

What has changed in YouTube Shorts since 2024?

The changes on the YouTube pages cited here, all since 2024, decide what counts as a Short and what a view means. One blocks recommendation outright. None is described there as a change to how Shorts are ranked.

• 15 October 2024: uploads with a square or vertical aspect ratio, up to three minutes long, are categorized as Shorts. A square or vertical video over one minute and up to three minutes long that was uploaded before that date stays long-form.
• Same help page: a Short longer than a minute that carries any active copyright claim, including a manual one, is blocked globally: nobody can play it, YouTube will not recommend it, and it cannot earn, with no penalty to the channel. YouTube's Create Shorts page, checked the same day, says these Shorts will no longer be automatically blocked and may remain playable, so the two pages disagree. Either way, removing the claimed content or disputing the claim is the route back, and nothing changes for Shorts under one minute.
• 31 March 2025: a Shorts view counts each time a Short starts to play or replays, with no minimum watch time. The old metric stays in YouTube Analytics as engaged views, the count YouTube says to compare Shorts on.
• 8 December 2025: Official Artist Channels get the same three-minute categorization for uploads from that date.

Take a vertical video that runs 2 minutes 40 seconds. That is 2 × 60 + 40 = 160 seconds, 20 seconds inside the 180-second limit. Uploaded on 14 October 2024 it stays a long-form video; uploaded a day later it is a Short.

At 160 seconds it is also 160 − 60 = 100 seconds past the one-minute line. On the three-minute Shorts page, one active claim on its music therefore blocks it everywhere; on the Create Shorts page it may stay playable. Either way the routes back are removing the claimed music or disputing the claim, and once the claim is resolved the Short is viewable and eligible for monetization.

The money follows engaged views as well. Joining the YouTube Partner Program through Shorts takes 1,000 subscribers and 10 million qualified Shorts views in the last 90 days, an average of 10,000,000 ÷ 90 = about 111,111 a day, and YouTube says that eligibility, like the Shorts ad revenue share, runs on engaged views. Apart from the copyright block, the pages cited here tie none of these changes to recommendations.

Which Shorts algorithm claims has YouTube confirmed?

The YouTube pages cited here confirm few of the common claims about the Shorts feed. Three touch a written rule. Each claim sits below against what those pages say.

Three rows touch a written YouTube rule: the 60-hashtag limit, the view definition and the copyright block. The other four may describe some channels well, yet the pages cited here confirm none of them, and engaged views compared across your own uploads test them better than anyone’s screenshot.

Is the Shorts algorithm similar to TikTok’s?

In outline, yes. TikTok and YouTube both describe systems that learn from what each viewer watches and does next. The difference is how much each one writes down.

TikTok’s help page names three groups of factors for its feeds: user interactions, content information and user information. For most users it weights interactions, which may include time spent watching, more heavily than the rest, and it names follower count only for the LIVE feed and account suggestions. The explainer on how TikTok’s recommender predicts interest walks through TikTok’s own example.

YouTube’s page gives no relative weight at all. It does name three things absent from TikTok’s For You list: satisfaction surveys, external evaluators, and the reputation and quality of a channel. The last one judges the channel as well as the video.

Search lines up more closely. TikTok weights content information most for search, including how well a video matches the words typed; YouTube ranks search on relevance, engagement and quality. Both require a label on realistic altered or AI-generated media. TikTok adds that its label does not change distribution unless the post breaks the Community Guidelines.

Instagram Reels joins both in the TikTok, Reels and Shorts comparison, which sets the three platforms side by side row by row.

Go Viral works on the part a creator controls

Nearly every input YouTube names is a viewer’s reaction to a video. The lever is the video. Go Viral, an app for iPhone and iPad, reads a clip you import or a Shorts link you paste.

The Hook Score grades the first 3 seconds from 0 to 100. The Engagement Heat Map marks drop-offs, replays and retention trends across the clip, and the Viral View Forecast gives estimated ranges for views, likes, comments and shares. The pre-upload checklist for YouTube Shorts lists what to fix in the file before any of that.

The app does not connect to your YouTube account. It cannot see YouTube Studio, engaged views or the recommendation system, and it does not know how YouTube weighs anything.