How the Instagram algorithm works

One system for each part of the app

Instagram says so itself: "Instagram doesn't have a singular algorithm". Each part of the app has its own, tailored to how people use it. The reference text, signed by Adam Mosseri, dates from 2023. Meta also keeps newer transparency pages, with the Reels one dated November 2025.

Area	Whose content	Signals Instagram names
Feed	People you follow, plus recommendations	Your activity, information about the post and the person who posted it, your history of interacting with them
Stories	People you follow	Viewing history, engagement history, closeness to the person who posted
Explore	Mostly accounts you don't follow	Information about the post, your activity in Explore, your history with the person who posted. Predicts likes, saves and shares
Reels	Mostly accounts you don't follow	Your activity, your history with the person who posted, information about the reel and its creator

How a Reel earns distribution

Instagram explained it in 2025: among non-followers, a reel is first recommended to a small audience, and the best performers move on to slightly larger ones. The signals it names are activity such as watch time, retention, shares, likes and comments. The system also looks for people with interests similar to those of people who already liked the video.

This explains why a small account can post one video with reach far above normal, and why the next video can stall at a few hundred views. Every video runs its own test.

What the system tries to predict

This is the most useful part for anyone making video. The Reels transparency page lists predictions such as:

Official prediction	What to do in the video
How likely you are to watch less than three seconds	Make the topic clear in the first second. Test the line in the hook analyzer
How likely you are to watch more than 95% of people who watched reels of the same length	Cut the padding. The comparison is with videos of the same length, so a short video doesn't win just for being short
How likely you are to share it, on or off Instagram	Give people a reason to send it. See how to think about sends
How likely you are to comment	End with a question people can answer in one word
How likely you are to follow the author	A clear profile and a repeated topic. See how to get more followers
How likely you are to use the reel's audio	Original audio or a format that's easy to remake

The list changes often and Meta doesn't share the weight of each item. Treat it as a direction, not a formula.

What reduces distribution

• Poor technical quality: Instagram names low resolution, watermarks, muted video, borders, too much text and video already posted.
• Unoriginal content: reposts and accounts that collect other people's content are less likely to be recommended.
• Recommendation Guidelines: violence, regulated products such as vapes, and sexually suggestive content generally aren't recommended to non-followers.
• Repeat violations: they can keep your whole account out of recommendations for a period. See how to check for a shadowban.

Myths and what's known

What people say	What's known
"Instagram hides posts so you'll pay for ads."	Instagram's text says it doesn't suppress content to encourage people to buy ads.
"One algorithm controls everything."	There are several systems, classifiers and processes.
"Only big accounts get recommended."	The 2025 text on distribution is about creators of all sizes.
"30 hashtags boost your reach."	Instagram moved to a limit of 5 hashtags and asks for more targeted ones.
"There's a time of day the algorithm prefers."	We found no official source that says so. What counts is how people react. See the best time to post.

What to do this week

1. Open Insights and see how much of your reach comes from non-followers.
2. On your last 5 Reels, compare average watch time with the length.
3. Pick the video with the worst ratio and rewrite just the opening.
4. Film a new video on the same topic, with a different opening and example. If the option shows up for you, publish it as a trial reel, which goes to non-followers first.
5. Check Account Status to see if anything has been flagged.

Tavea doesn't see your account stats. It reads the video from the link and estimates, from the content, where the drop-off risk is. That helps with your own videos and with other people's, whose stats you can't see.