Reels vs Carousels in Late 2026: Which Format Gets More Reach?

Neither format wins outright, because the 2026 data disagrees depending on what “reach” means. Buffer’s reach analysis found Reels reached 1.36 times more people than carousels, but that dataset ends in October 2024. Socialinsider’s brand data shows carousels earning more average views per post at every account size, and Buffer’s 2026 engagement study shows carousels earning roughly double the engagement per person reached.

So the useful answer for Reels vs carousels reach in 2026 is conditional: Reels are the stronger bet for reaching non-followers, carousels for views, saves and depth, and your own account data should settle the tie. This guide lays out the evidence, explains why the numbers conflict, and gives you a repeatable way to test formats.

Which Gets More Reach in 2026, Reels or Carousels?#

Reels have historically reached more people, but newer brand data complicates that. Buffer’s older analysis favours Reels for reach, while Socialinsider’s 2025 benchmarks show carousels averaging more views per post. The honest answer is that it depends on the dataset, the metric and your audience.

This reach data comparison shows why:

These are different measurements. Reach counts unique accounts, while views can include repeat exposure. Socialinsider attributes carousels’ view advantage to the format resurfacing in feeds, which is plausible but not something Instagram has confirmed. Buffer’s reach data is also older than the Socialinsider figures.

Figures such as a 30.81% Reels reach rate circulate widely and are credited to different sources in different articles. Treat such numbers with caution unless you can trace them to the original study.

What Does Instagram Say About Format Preference?#

Instagram has not said it prefers one format. What the head of Instagram, Adam Mosseri, has named are signals. According to Buffer’s 2026 guide to the Instagram algorithm, the three that matter most are watch time, likes per reach and sends per reach, with likes counting slightly more for followers and sends slightly more for non-followers.

That reframes the Instagram algorithm format preference question. The algorithm ranks behaviour, not formats. Reels tend to generate watch time and sends easily, and they sit in a dedicated discovery feed. Carousels keep people on the post longer, which creates more chances to save, share and comment, according to Buffer. If you want a fuller walkthrough of ranking, Search Savvy’s breakdown of how the Instagram algorithm works in 2026 covers it in more depth.

Engagement Rate by Format: What Do the Benchmarks Show?#

Carousels lead on engagement across both major datasets, though the gap depends on the denominator. Socialinsider divides likes and comments by followers. Buffer divides engagements by reach. The two produce very different numbers, so never compare them directly.

Two points stand out. First, engagement is falling broadly: Socialinsider reports Instagram’s average engagement rate fell about 24% year on year in 2025, and Q3 2026 averaged 0.45% overall. Second, Socialinsider describes Reels as having become “table stakes”, stable but no longer a guarantee of gains, while brands increased their Reels output by 33% in 2025.

Buffer also cautions that Reels are often optimised for views, so a lower engagement rate does not mean they are failing. People consume them differently.

Saves vs Shares: Which Metric Should You Watch?#

Watch shares (sends) to judge discovery and saves to judge lasting value. Mosseri’s named signals include sends per reach but not saves, so sends are the metric most directly tied to distribution. Saves are a useful secondary indicator that people find a post worth returning to.

Socialinsider’s per-post averages show how the formats differ:

• Saves: Carousels averaged more saves than Reels for brands above 10K followers, for example 35 versus 22 at 50K to 100K followers. Below that size the two were close.
• Comments: Reels earned the most comments at every account size, for example 60 versus 40 for carousels at 100K to 1M followers.
• Views: Carousels led at every size.

This is the practical meaning of the saves vs shares metric: build carousels for reference value that earns saves, and build Reels for moments people send to a friend.

How Do You Run Content Format Testing?#

Content format testing means publishing the same idea in both formats and comparing per-reach ratios rather than raw counts. Use this process:

1. Choose a topic you can tell both ways. Turn one carousel idea into a Reel, or the reverse. A guide to repurposing Instagram Reels into blog content shows how one idea can travel across formats.
2. Control the variables. Post at comparable times, using data such as best posting times for Instagram as a starting point, and alternate which format goes first.
3. Publish enough posts. Aim for several of each format so a single outlier does not decide the result. Buffer uses medians for this reason.
4. Compare ratios, not totals. Divide sends, likes and saves by accounts reached, and check average watch time and the share of reach from non-followers in Instagram Insights.
5. Decide by goal. Pick the format that wins on the metric tied to your objective.
6. Log results. Search Savvy’s social media content calendar template with format, topic and results columns makes patterns visible.

Which Format Should You Use for Which Goal?#

On small accounts the picture is mixed. Socialinsider shows carousels ahead on average views even at 1K to 5K followers, while Buffer’s reach data favours Reels for discovery. That gap is a reason to test, not a reason to guess.

Common Mistakes When Comparing Reels and Carousels#

• Mixing denominators. A 0.5% engagement rate by followers and a 6.9% rate by reach are not comparable.
• Judging Reels by engagement rate alone. Buffer notes Reels are built for views.
• Relying on 2022 to 2024 reach data as if it describes late 2026.
• Drawing conclusions from one post. Viral outliers distort small tests.
• Weak carousel covers. The first slide decides whether anyone swipes.
• Ignoring consistency. Buffer’s own research links steady posting to stronger performance, so the format you can sustain matters.

Bottom Line#

For Reels vs carousels reach in 2026, use Reels to reach new people and carousels to earn views, saves and deeper engagement from the audience you already have. Test both on the same topics, compare per-reach ratios, and let your own data break the tie.

Your next step is a four-week test: pick four topics, publish each as both a Reel and a carousel, and compare sends per reach, saves per reach and non-follower reach. If you want help structuring the analysis, Search Savvy’s analytics and performance reporting services cover social reporting, and its social media strategy audit can review your format mix.

FAQ#

Do Reels still get more reach than carousels in 2026?#

Often for non-followers, but not universally. Buffer’s older analysis found Reels reached 1.36 times more people than carousels, while Socialinsider’s 2025 brand data shows carousels with higher average views. Test on your own account.

Do carousels get more saves than Reels?#

For brands above 10K followers, yes on average, according to Socialinsider. Below that size, saves for both formats were close.

Does Instagram favour Reels in its algorithm?#

Instagram has not publicly said it favours one format. Mosseri has named watch time, likes per reach and sends per reach as the top signals, and any format can earn them.

What is a good Instagram engagement rate in 2026?#

It depends on the method. Socialinsider’s average by followers was 0.45% in Q3 2026, with carousels at 0.50% and Reels at 0.48%. Buffer’s medians by reach run much higher, so compare like with like.

Should I post both Reels and carousels?#

Yes, for most brands. Socialinsider’s data shows brands averaging 8 Reels, 5 carousels and 7 images a month in 2025. Use the mix that fits what you can produce consistently.

How long should I test a format?#

Long enough that one outlier cannot decide the result, typically several posts per format over a few weeks. Compare medians and per-reach ratios rather than single posts.