How Instagram's Algorithm Works | Bounty_OS Docs
How Instagram's algorithms rank Reels, Feed, and Explore content, including key ranking signals, surface-specific differences, and what kills reach.
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Algorithms ▸ insta-algo.txt
How Instagram's Algorithm Works
Instagram doesn't have one algorithm — it uses separate ranking systems for Feed, Stories, Explore, and Reels. Each surface prioritizes different signals and serves different purposes.
Reels Ranking
Reels are Instagram's primary discovery surface and the most relevant for campaign content. The Reels algorithm prioritizes:
| Signal | Weight | What It Means |
|---|---|---|
| Watch time | Highest | How long viewers watch. Completion rate and rewatches are the top signals. |
| Shares to DMs | Very High | The strongest engagement signal for Reels. Instagram heavily weights private shares. |
| Saves | High | Viewers bookmarking the Reel. Indicates high-value, reference-worthy content. |
| Likes | Medium | Positive signal but less impactful than shares or saves. |
| Comments | Medium | Meaningful comments carry more weight than emoji-only reactions. |
| Audio usage | Medium | Using trending audio can boost initial distribution. |
Shares > Saves > Likes
Instagram's head of product has publicly confirmed that sends (DM shares) are the most valued engagement signal for Reels distribution. Create content people want to share with friends.
Feed vs Explore vs Reels Tab
Each surface ranks content differently:
| Surface | Who Sees It | Primary Signals |
|---|---|---|
| Feed | Your followers | Relationship history, post recency, engagement with your past content |
| Explore | Non-followers discovering you | Content similarity to viewer's interests, engagement velocity, content freshness |
| Reels Tab | Primarily non-followers | Entertainment value, watch time, audio trends, shareability |
For campaign content, the Reels tab is where most discovery happens. Optimize for entertainment value and shareability over follower engagement.
What Kills Reach
Instagram actively suppresses content with these characteristics:
- Watermarks from other platforms: TikTok logos or any third-party watermarks dramatically reduce Reels distribution.
- Low-resolution content: Anything below 720p or visibly compressed.
- Text-heavy thumbnails: Cover images that are mostly text get deprioritized.
- Engagement bait: "Tag 3 friends" or "Double tap if you agree" without substance.
- Recycled content: Reposting the same Reel or content that's already on the platform.
- Political or sensitive content: Instagram reduces the reach of content it classifies as borderline.
- Too many hashtags: Using 20+ hashtags can look spammy. Stick to 3–8 relevant ones.
Hashtags, Audio & Location Tags
- Hashtags: Use 3–8 specific, relevant hashtags. Mix niche hashtags with moderately popular ones. Avoid banned or spammy hashtags.
- Trending audio: Using trending Reels audio gives a distribution boost. Check the Reels audio page — a small upward arrow indicates a trending track.
- Original audio: Works well for talking-head content and tutorials. Won't get the trending boost but avoids competition.
- Location tags: Boost discovery for local or regional audiences. Especially useful for location-specific campaigns.
Instagram vs TikTok: Key Differences
| Factor | TikTok | |
|---|---|---|
| Discovery | Almost entirely algorithmic (FYP) | Mix of followers (Feed) + algorithmic (Explore/Reels) |
| Top signal | Watch time + completion | DM shares + watch time |
| Audio impact | Trending sounds are very important | Trending audio helps but less decisive |
| Optimal length | 60–90 seconds | 30–60 seconds |
| Hashtag strategy | 3–5 niche hashtags | 3–8 mixed hashtags |
Algorithm Updates
Instagram frequently adjusts its ranking. In recent updates, Instagram has increased the weight of original content and smaller creators in Reels distribution, making it more competitive with TikTok's creator-friendly algorithm.
41 objectsUpdated 2026-02-10