There is no one Instagram algorithm. Instagram runs a separate ranking for Feed, Stories, Explore and Reels. Each one guesses what you will enjoy, from what you do and what the post is.
Updated November 2026. Main source: Instagram Ranking Explained, by Adam Mosseri, head of Instagram, May 31, 2023.
Is there one Instagram algorithm?
- No. There are 4 rankings: Feed, Stories, Explore and Reels.
- Stories show people you follow. Feed shows people you follow, plus suggested posts.
- Explore and Reels show mostly accounts you do not follow.
- So if you want new followers, Reels and Explore do that work.
How the Feed algorithm works
Instagram names 4 kinds of signals for Feed:
- Your activity. What you like, share, save and comment on.
- Information about the post. For example, how popular it is.
- Information about the person who posted. How interesting they might be to you.
- Your history with them. How interested you are in that person's posts.
How the Reels algorithm works
- Instagram says it guesses "how likely you are to reshare a reel, watch a reel all the way through, like it, and go to the audio page."
- So the 4 things that matter most: shares, watching to the end, likes, and taps to the audio.
- The signals: your activity, your history with the person who posted, info about the reel, and info about the person who posted.
- Most Reels you see come from accounts you do not follow. A good Reel can reach people who have never seen you.
Want to post Reels on a plan? Read Can you schedule Reels on Instagram?
How the Stories algorithm works
- Viewing history. Whose Stories you watch.
- Engagement history. Whose Stories you interact with.
- Closeness. How likely you are to be friends or family with the person.
How the Explore algorithm works
- Information about the post. How popular it is matters more here than in Feed.
- Your activity in Explore. What you liked, saved, shared or commented on there.
- Your history with the person who posted. Most of Explore is from people you do not follow yet.
What changed in 2025 and 2026
- 2024-04-30: original posts first. Instagram said it will show the original post in recommendations, not a repost. Accounts that mostly repost other people's work are left out of recommendations. Source: Instagram for Creators.
- 2025-12-10: Your Algorithm. In the Reels tab, you can see the topics Instagram thinks you like, and add or remove them. It started in the US. Source: TechCrunch.
- 2025-12-19: 5 hashtags at most. Instagram said a post or Reel now takes up to 5 hashtags, down from 30. Source: Social Media Today.
What Instagram shows less
Instagram's own list. It makes these Reels less visible:
- Low-resolution or watermarked reels.
- Reels that are muted, or have borders.
- Reels that are mostly text.
- Reels that were already posted on Instagram.
And:
- Posts that go against Instagram's Recommendation Guidelines stay up. But Instagram does not recommend them in places like Explore and Reels.
- Account Status in the app tells you if your posts cannot be recommended. You can appeal there.
Is shadowbanning real?
- People say "shadowban" when reach drops for no clear reason.
- Instagram's answer, in Ranking Explained: "If anything makes your content less visible, you should know about it and be able to appeal."
- Check Account Status first. If nothing shows there, look at your hook and your watch time.
The signals you can change
- Watch to the end. Start with the best second. Cut the slow parts.
- Shares. Make something people want to send to a friend.
- Likes. Ask a clear question, or give a clear tip.
- Taps to the audio. Use a sound that fits the Reel.
- Original work. Post your own video, with no other app's watermark.
See which of your Reels people watched to the end in the sprkly analytics guide. More on the numbers: How to read your social media analytics.
Does posting time or how often matter?
- Posting when your followers are online gets you early views.
- Timing helps more people see it early. It does not replace a good hook.
- Start times: Best times to post on social media.
- How many posts a week: How often should you post?
- Keep a steady rhythm by writing the week in one go: How to batch a week of content.
Hashtags and captions
- Use up to 5 hashtags. Instagram says that is the limit now (Social Media Today, Dec 19, 2025).
- Pick tags that say what the post is about.
- Write the caption in plain words people would search for.
- More: Hashtag strategy for 2026.
How to reset or train your feed
This part is for you as a viewer.
- Your Algorithm: in the Reels tab, add or remove topics.
- Not interested: tap it on a post you do not want. Instagram shows you less like it.
- Mute: mute people you do not want to see, without unfollowing.
Turn reach into chats
- More reach means more comments and DMs.
- Answer them all in one Instagram inbox.
- Or send a link by DM when someone comments a word: comment to DM.
- Growing from zero? Read How to grow your Instagram following.
FAQ
What is the Instagram algorithm?
The set of rankings that choose what each person sees in Feed, Stories, Explore and Reels. Each one guesses what you will enjoy.
What is the most important signal for Reels?
Instagram names 4 guesses: will you share it, watch it to the end, like it, and tap through to the audio.
How many hashtags should I use on Instagram?
Up to 5. Instagram said in December 2025 that this is the new limit.
Does Instagram shadowban accounts?
Instagram says that if your posts are shown less, you should be told and be able to appeal. Check Account Status in the app.
Does posting at the same time every day help?
Posting when your followers are online helps early views. It does not fix a weak Reel.
Post on a steady rhythm without watching the clock. Start your free trial.