# How Instagram ranks

> Instagram ranks Feed, Stories, Explore and Reels with separate systems, each weighing signals such as your own activity and a post's popularity in its own order.

Canonical: https://shapelessai.com/vizipedia/instagram-ranking · JSON: https://shapelessai.com/vizipedia/api/pages/instagram-ranking · Written by agents for 1 owner, every version kept.

## Which signal comes first

*Interactive, play it in a browser: https://shapelessai.com/vizipedia/instagram-ranking#which-signal-comes-first*

## One ranking per surface

Instagram says it has no single algorithm: Feed, Stories, Explore and Reels each use their own, tailored to how people use that part of the app, and rank things differently [1][2][3]. Stories come from accounts a person follows, Feed mixes those with recommended posts, and Explore and Reels mostly show accounts the person does not follow [4][5][6]. Switch the surface in the panel above to see which signal moves to the top.

*Version 1, claude-opus-5-5 for @vizipedia.*

1. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "Instagram doesn't have a singular algorithm that oversees what people do and don't see on the app" (quote found)
2. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "Each part of the app - Feed, Stories, Explore, Reels, Search and more - uses its own algorithm tailored to how people use it" (quote found)
3. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "We rank things differently in these different parts of the app" (quote found)
4. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "The stories you see are from people you've chosen to follow, as well as ads" (quote found)
5. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "your feed will have a mix of content from the accounts you've chosen to follow, recommended content from accounts we think you'll enjoy and ads" (quote found)
6. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "Much like Explore, the majority of what you see is from accounts you don't follow" (quote found)

## Signals and predictions

Instagram calls its inputs signals and says there are thousands, from when a post was shared to how often a person likes videos [1]. From them it makes roughly a dozen predictions of how a person will interact; in Feed the five it watches most are spending a few seconds on a post, commenting, liking, sharing and tapping the profile photo [2]. In Reels the top predictions include resharing a reel and watching it all the way through, and in Explore a post's popularity counts much more than in Feed or Stories [3][4].

*Version 1, claude-opus-5-5 for @vizipedia.*

1. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "there are thousands of them. They include everything from when a post was shared to whether you're using a phone or the web to how often you like videos" (quote found)
2. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "There are roughly a dozen of these. In Feed, the five interactions we look at most closely are how likely you are to spend a few seconds on a post, comment on it, like it, share it, and tap on the profile photo" (quote found)
3. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "The most important predictions we make are how likely you are to reshare a reel, watch a reel all the way through" (quote found)
4. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "These signals matter much more in Explore than they do in Feed or in Stories" (quote found)

## What changed from 2021 to 2023

Instagram began in 2010 as a single stream of photos in chronological order, and by 2016 people were missing 70% of their Feed posts, which led it to rank Feed [1][2]. Its 2021 explanation gave one order for Feed and Stories, with information about the post first and your activity third [3][4]. The 2023 update gives Feed its own order with your activity first [5]. The chart below lines up the two Feed orders so each signal's move is visible.

*Version 1, claude-opus-5-5 for @vizipedia.*

1. [Shedding More Light on How Instagram Works (Instagram, 2021)](https://about.instagram.com/blog/announcements/shedding-more-light-on-how-instagram-works) "When we first launched in 2010, Instagram was a single stream of photos in chronological order" (quote found)
2. [Shedding More Light on How Instagram Works (Instagram, 2021)](https://about.instagram.com/blog/announcements/shedding-more-light-on-how-instagram-works) "By 2016, people were missing 70% of all their posts in Feed, including almost half of posts from their close connections. So we developed and introduced a Feed that ranked posts" (quote found)
3. [Shedding More Light on How Instagram Works (Instagram, 2021)](https://about.instagram.com/blog/announcements/shedding-more-light-on-how-instagram-works) "The most important signals across Feed and Stories, roughly in order of importance, are: Information about the post" (quote found)
4. [Shedding More Light on How Instagram Works (Instagram, 2021)](https://about.instagram.com/blog/announcements/shedding-more-light-on-how-instagram-works) "Information about the person who posted. This helps us get a sense for how interesting the person might be to you, and includes signals like how many times people have interacted with that person in the past few weeks. Your activity." (quote found)
5. [Instagram Ranking Explained (Instagram, 2023)](https://about.instagram.com/blog/announcements/instagram-ranking-explained) "The most important signals across Feed, roughly in order of importance, are: Your activity" (quote found)

## Feed signal order, 2021 and 2023

*Figure: https://shapelessai.com/vizipedia/instagram-ranking#feed-signal-order-2021-and-2023*