The Instagram Algorithm Encyclopedia

Topics · Surface

Reels

Contents
  1. The format and ways to watch
    1. Reels across Instagram
    2. Watching together on television
  2. How it has changed
  3. How Instagram selects recommended reels
    1. Viewing and interaction signals
    2. Audience matching and Explore discovery
  4. Shaping recommendations and discovering through friends
    1. Adjusting recommendation topics
    2. Friends and shared recommendation feeds
  5. Creating reels for discovery
    1. Ideas, openings and production tools
    2. Originality and content context
  6. Understanding performance and uneven reach
    1. Using performance feedback
    2. Why similar reels can perform differently
  7. What Meta research adds to Reels recommendations
    1. Learning similarities from sound and images
    2. Considering a sequence of videos together
  8. See also
  9. References

Instagram Reels are short videos with optional music, effects and text that stay on a creator’s profile unless deleted and can reach followers and new viewers through Feed, Explore and the Reels tab1. Instagram personalizes recommendations by predicting which reels each person might enjoy, creating opportunities for discovery beyond an existing audience2. Viewers can influence their recommendations through topic preferences and find videos connected to their friends’ activity34. For creators, Mosseri said in October 2024 that the first three seconds of a reel are especially important5.

The format and ways to watch

Reels support both individual browsing in the Instagram app and television viewing with other people16.

Reels across Instagram

Instagram’s Reels guide gives examples ranging from a 10-second clip with a trending song to a 90-second mini-vlog1. A creator’s published reels have their own dedicated tab on the creator’s profile1. Stories are a different sharing format whose posts disappear after 24 hours1.

Watching together on television

Instagram for TV began as a US test on Amazon Fire TV devices in December 2025, with reels grouped into interest-based channels such as music, sports and travel789. Once viewers select a reel, subsequent videos play automatically with full sound, without requiring scrolling78. In June 2026, Instagram announced further shared-viewing tests and said casting reels from a phone, including saved videos, was available on Google TV and Fire TV6. Instagram described the television experience as evolving through testing68.

How it has changed

  1. 2020

    August

    Instagram launched Reels for recording and editing multi-clip videos and sharing them through Feed and Explore10.

  2. November

    Instagram announced a dedicated Reels tab for discovering videos from creators and other users11.

  3. 2021

    December

    Instagram announced plans to consolidate its video formats around Reels as part of its priorities for 202212.

  4. 2022

    February

    Creators gained the ability to share their Instagram Reels as recommended content on Facebook13.

  5. 2023

    November

    Instagram updated Reels Plays to count replays as well as initial plays14.

  6. 2024

    April

    Instagram announced recommendation changes intended to help creators of all sizes reach new audiences through reels2.

  7. December

    Instagram introduced , allowing creators to show reels to first before deciding whether to share them with followers15.

  8. 2025

    February

    Instagram said its previously announced Reels recommendation changes were fully launched2.

  9. September

    Instagram announced a limited mobile test in India that opened directly into Reels, following a similar Reels-first experience on iPad16.

  10. October

    Instagram launched the ability for creators to dub and lip-sync their reels to and from English, Hindi, Spanish and Portuguese17.

How Instagram selects recommended reels

Meta’s Transparency Center documents the continuous Reels viewing sequence separately from discovery through Explore1819.

Viewing and interaction signals

For the sequence of reels shown while watching, Meta’s Transparency Center lists viewing details such as watching for at least three seconds, skipping within two seconds, dismissing a reel and watching with sound19. It also lists likes, saved videos, past comments, profile visits and selecting “Use audio” after opening an audio link19. Instagram for Creators includes shares and retention, meaning how long viewers keep watching, among the information used to predict interest2. These inputs include both reactions to a particular reel and a viewer’s history with videos and their creators19.

Audience matching and Explore discovery

Instagram’s looks at what people with similar interests engage with to help identify reels a viewer might appreciate2. For Explore specifically, Meta’s Transparency Center lists time spent viewing an author’s posts, visits to that author’s profile and clicks to open videos full screen18. Its Explore description also includes the number of people who watched more than 95% of a video and a viewer’s recent “Not interested” responses18.

Shaping recommendations and discovering through friends

Reels’ topic controls and friend-based discovery features have expanded through distinct tests and rollouts4202122. Their availability and scope matter when following instructions for a particular account or region2324.

Adjusting recommendation topics

began as a small US test in October 2025, launched in the US in December and expanded to English speakers globally in January 2026202122. Instagram’s December instructions said to open the two-lines-with-hearts icon at the upper right while watching Reels, review the interests Instagram has inferred and type topics to see more or less of3. In February, Mosseri described the control as Reels-only; in April 2026, he said it was accessible from both the Reels and search tabs, where viewers could correct interests, add missing topics or request no content about a topic2425. His April explanation said it did not yet cover the home feed, while Instagram’s undated Help Center describes regional differences and warns that the feature may not be available to everyone2324.

Friends and shared recommendation feeds

Mosseri introduced Blend in April 2025 as a shared Reels recommendation feed that combines suggestions for friends: to start one, open a direct-message conversation and select the Blend icon, with every participant required to opt in26. Instagram announced the Friends tab’s global rollout in August 2025, bringing together public content friends had interacted with and recommendations from Blends a viewer had started4. To open it, tap “Friends” at the top of Reels; tap “Reels” to return to the usual recommendations4. Instagram also announced controls for hiding one’s own reel likes and comments and muting particular followed people’s “activity bubbles,” the indicators showing friends’ activity in this experience4.

Creating reels for discovery

Ideas, openings and production tools

Mosseri recommends video when it naturally fits the work, such as comedy or musical performance, and says photographers need not force photographs into videos; in May 2026, he also distinguished Reels storytelling from the easier everyday sharing offered by Stories2728. He recommends a recognizable theme and continued experimentation, while Instagram for Creators’ Erling Haaland example emphasizes personality and finding shorter clips within existing longer videos2930. For openings, Mosseri suggests experimenting with text that sets expectations for what viewers are about to see, and he recommends for testing a video with before deciding whether to share it with followers and add it to the profile530. Templates let creators reuse elements of another reel with their own photos and videos, supports ideas, recording, editing and performance information, and Best Practices—accessible in the —provides education on creation, engagement and reach313233.

Originality and content context

For Reels discovery, Mosseri has said creators can gain more recommendation reach over time by publishing their own work rather than collecting other people’s content34. He also recommends captions that explain the video and a small number of relevant hashtags to help Instagram understand its subject34. In September 2026, he distinguished developing a successful idea into more content from uploading the identical reel again, which would not be seen as 35.

Understanding performance and uneven reach

Using performance feedback

Reels watch-time information can help identify moments when viewers lose interest: a creator quoted by Meta’s Newsroom described shortening product-holding scenes after noticing people stopped watching them36. Meta’s Newsroom also announced notifications showing new followers gained from reels, connecting video performance to audience growth36. Instagram for Creators’ Jackson Olson case study describes substantial views and follower gains after he began experimenting with reels and increased posting to four or five a week37.

Why similar reels can perform differently

In May 2026, Mosseri attributed differing reach for identical reels to randomness, competition from other posts and the context in which a video appears38. In June, he advised against deleting and reposting a weak performer because the same content may perform similarly and followers who already saw it may be less likely to interact39. He explicitly said this was not a penalty for deleting and reposting, and noted that a slow-starting post might gain attention later39. In March 2026, he also said scheduling a reel does not reduce its distribution, meaning how widely Instagram shows it40.

What Meta research adds to Reels recommendations

Meta research and patents. These may not describe how Instagram works today.

Meta’s research describes methods for recommending Reels4142. Meta’s research has examined two different questions: which videos resemble one another and which videos work together in a viewing sequence4142.

Learning similarities from sound and images

Meta’s research described a 2021 Reels application of self-supervised learning, an approach that did not require people to label every training example41. Meta’s research explained how learning from sound and images could recognize recurring themes, such as the same music and dance moves performed by different people, even when videos looked different41. In that application, Meta’s research described suggesting videos related to recently watched reels while filtering out near-duplicates41.

Considering a sequence of videos together

Meta’s September 2026 research paper evaluated an approach that chooses and assesses a sequence of videos together instead of scoring every video independently42. Meta’s research tested the approach in Instagram Reels and Facebook Video and reported increased time spent in the evaluated settings42.

See also

References

  1. 1How to make Instagram Reels: the complete 2026 guideInstagram announcement · Sep 28, 2026
  2. 2Helping creators of all sizes break throughInstagram for Creators · Feb 26, 2025
  3. 3Introducing a new way to see and control your algorithmInstagram explainer · Dec 10, 2025
  4. 4New Features to Help You Connect With FriendsInstagram announcement · Aug 6, 2025
  5. 5The first three seconds of a reel are super important.Adam Mosseri · Oct 7, 2024
  6. 6Instagram for TV Gets Bigger, With New Ways to Watch TogetherInstagram announcement · Jun 22, 2026
  7. 7Watch Reels on the Big Screen With Instagram for TVMeta Newsroom · Dec 16, 2025
  8. 8Introducing Instagram for TVInstagram announcement · Dec 16, 2025
  9. 9Today we’re kicking off a test of Instagram for TV in the US, starting with Amazon Fire TV devices.Adam Mosseri · Dec 16, 2025
  10. 10Introducing Reels – a new way to create and discover short, entertaining videos on Instagram.Adam Mosseri · Aug 5, 2020
  11. 11Introducing Reels and Shop TabsMeta Newsroom · Nov 12, 2020
  12. 122022 PrioritiesAdam Mosseri · Dec 28, 2021
  13. 13Reels on FacebookAdam Mosseri · Feb 22, 2022
  14. 14New Ways to Create Content on InstagramMeta Newsroom · Nov 15, 2023
  15. 15We’re introducing trial reels to depressurize the experience of sharing reels and help people understand how content might perform before sharing it widely.Adam Mosseri · Dec 10, 2024
  16. 16In India, Instagram debuts a Reels-first experience for its mobile appMeta Newsroom · Sep 29, 2025
  17. 17Instagram Empowers Creators to Go Global with Local Voice Translations and FontsMeta Newsroom · Nov 28, 2025
  18. 18Instagram Explore AI systemMeta Transparency Center · Jun 22, 2026
  19. 19Instagram Reels Chaining AI systemMeta Transparency Center · Nov 11, 2025
  20. 20Excited to introduce Your Algorithm, a new way to see and control what you see in the Reels tab.Adam Mosseri · Dec 10, 2025
  21. 21We’re expanding Your Algo to all English speakers globally today.Adam Mosseri · Jan 13, 2026
  22. 22We’re starting to publicly test the ability to see and control your algorithm to a small percentage of users in the US this week.Adam Mosseri · Oct 29, 2025
  23. 23Tune your algorithm on InstagramInstagram Help Center
  24. 24A few features of Instagram that you might not know about, but might appreciate.Adam Mosseri · Apr 8, 2026
  25. 25Head of Instagram ADAM MOSSERI returns!!!Adam Mosseri · Feb 25, 2026
  26. 26We’re introducing Blend as a new way to connect with your friends in DMs.Adam Mosseri · Apr 17, 2025
  27. 27Rapid fire questionsAdam Mosseri · May 12, 2026
  28. 28Creator Tips & TricksAdam Mosseri · Feb 2, 2024
  29. 29How Erling Haaland Became the Fastest-Growing Footballer on Instagram Using ReelsInstagram for Creators · Jun 4, 2026
  30. 30If you regularly post reels on Instagram, please keep these five tips in mindAdam Mosseri · Jan 22, 2025
  31. 31Introducing Best Practices, an Education Hub for Creators on InstagramMeta Newsroom · Oct 1, 2024
  32. 32Introducing New Ways to Find Inspiration and Easily Create Reels with TemplatesInstagram announcement · Jul 18, 2023
  33. 33We’re continuing to build out Edits to support the entire creative process.Adam Mosseri · Feb 4, 2026
  34. 34RecommendationsAdam Mosseri · Aug 30, 2022
  35. 35A few ways to get more mileage out of a post that worked, without just reposting it.Adam Mosseri · Sep 30, 2026
  36. 36New Features on Instagram Reels: Trends, Editing and GiftsMeta Newsroom · Apr 14, 2023
  37. 37115M Reels Plays: How posting daily reels helped Jackson Olson grow 6x on InstagramInstagram for Creators · May 17, 2023
  38. 38Two identical reels can get very different reach depending on timing, competition, and context.Adam Mosseri · May 28, 2026
  39. 39Should you delete and repost if something flopped? The short answer is no.Adam Mosseri · Jun 30, 2026
  40. 40One of the most common questions I get is does scheduling a reel hurt your reach?Adam Mosseri · Mar 19, 2026
  41. 41Learning from videos to understand the worldMeta AI blog · Mar 12, 2021
  42. 42LIGE-GR: A Smooth Leap from Ranking to Generative Recommendation in the LLM EraMeta research paper · Sep 16, 2026

Follow changes to Reels

Unofficial. Not affiliated with Instagram or Meta. AI answers from the sources shown.