Fitness and Health
How the Instagram Algorithm Works in Late 2026: What Adam Mosseri Said in October
How does the Instagram algorithm work right now? In an October 26, 2026 interview with Colin and Samir, Instagram head Adam Mosseri said the key signal for reaching people who do not follow you is "sends per reach," how often people share your post in DMs compared with how many saw it. He also said Instagram focuses "way less on watch time than all the competition does." [1] So the goal is simple: make posts people want to send to a friend.
Short answer
- Sends matter most for reaching new people.
- Watch time matters less than on other apps. Do not stretch videos.
- Carousels with music can appear in the Reels feed.
- Change the format before you drop an idea.
- Use 2 or 3 formats you can keep up with.
- AI made posts probably do not rank as well, per Mosseri.
The 7 points, explained
This Week in Social Media summarized seven takeaways from the 71 minute interview. [1]
1. Track sends per reach. Shares divided by accounts reached. Mosseri said it is the key signal for reaching non followers, and it is coming to Insights. [1]
2. Make posts people want to DM. More photos and videos get sent in DMs than get posted to Stories or Reels, he said. [1] Every send puts your post in front of someone new.
3. Do not stretch videos. "We focus way less on watch time than all the competition does." He said one 20 minute video is "maybe a hundred things that you could have sent to a friend." [1]
4. Add music to carousels. That makes them eligible for the Reels viewer. [1]
5. Try a broadcast channel. Mosseri has about 4.1 million followers and 200,000 to 300,000 channel subscribers, and he said the smaller group is underrated. [1]
6. Change the format. His shoutouts of smaller creators stopped working as Stories, worked as green screen videos "for like a month," and now work as carousels. The ranking had not changed. "What resonates with people changed." [1]
7. Pick 2 or 3 formats. "You don't have to use all of the formats." Asked whether AI made posts rank as well as everything else, he said, "Probably not." [1]
Long videos are coming too
TechCrunch reported on October 26, 2026 that Instagram is testing "Features," videos up to 90 minutes, plus "Clips as Reels," which turns parts of a long video into Reels that link to it. [2] This is a small US test after starting in Brazil. [2] Most people do not need long video yet, but it shows where the app is going.
A simple weekly plan (original)
Monday: look at your last 10 posts. Work out shares divided by reach. Note the top 2.
Tuesday or Wednesday: post one carousel in the style of your top post, with music.
Thursday: post one short Reel, under 30 seconds, with one clear point.
Weekend: reply to comments and DMs. Share one Story.
Buffer's September 2026 analysis of 9.6 million posts found midweek and Thursday mornings had higher engagement, while Friday and Saturday were weakest. [3] Buffer sells scheduling software, so treat its timing data as a starting point and check your own Insights.
What makes someone send a post (original)
- "This is so you." Relatable humor.
- "We should go here." Places, restaurants, trips.
- "Did you see this?" News or a hot take in your niche.
- "You need this." A tip, a product, a hack.
- "Look at this outfit." Clear outfit photos with where things are from.
Before you post, ask: who would someone send this to? If you cannot answer, sharpen it.
Mistakes to stop now
- Posting long videos padded with filler for watch time.
- Using every format and burning out.
- Leaning on AI images.
- Deleting a format the moment it dips. Try it as a carousel first.
What this means for a small personal account (original)
You do not need to think like a brand. Think like a friend who always finds the good stuff.
- Post fewer, better things. One strong carousel a week beats five rushed posts.
- Make the first image clear. People decide in a second whether to keep looking.
- Talk to one person. Write captions like you are texting a friend.
- Reply to every comment in the first hour. Conversations help posts travel.
- Use Stories for daily life and the feed for your best work.
A pre post checklist
- [ ] Would someone send this to a friend? Who?
- [ ] Is the first slide or first second strong?
- [ ] Is the text readable on a small screen?
- [ ] Did I add music if it is a carousel?
- [ ] Is it my own photo or idea, not AI made or copied?
- [ ] Does the caption say what this is in plain words?
What not to read into one bad post
A single post that flops is normal. Reach goes up and down for reasons you cannot see, like what else people were watching that day. Look at your average over 10 posts, not one. If several posts in a row slide, change the format before you change the idea, the way Mosseri described.
Will the algorithm change again?
Yes. Instagram changes ranking often, and it is testing new formats right now. The safest plan does not depend on tricks: post original things people want to share, in formats you can keep up with, and check your own numbers.
If you only do three things
- Before posting, name the friend someone would send it to.
- Add music to every carousel.
- Once a month, check which posts got shared most, and make more like them.
Myths to drop
- "Hashtags are the secret." They help label a post. They do not create reach on their own.
- "Posting at the exact right minute is everything." It helps a little. Content helps a lot more.
- "You need to go viral to grow." Steady posts that get shared a bit each time add up.
Quick takeaway
Mosseri: sends per reach is the key signal for reaching non followers.
Instagram weighs watch time less than rivals. Keep videos tight.
Add music to carousels so they can show in the Reels feed.
Pick 2 or 3 formats and make posts people want to send.