Have you noticed that some posts on Instagram get few likes but reach thousands of people? And the other way round – posts with lots of likes that generate no sales or real reaction? In 2026, this difference has a clear explanation: the Instagram algorithm has changed fundamentally. At Altanet Craiova we believe every business active on Instagram needs to understand this change – because ignoring it means investing time and energy in the wrong direction.
What changed in the Instagram algorithm in 2026?
Until now, Instagram measured a post's success primarily by the number of likes and comments. The more there were, the more visibility the algorithm gave.
In 2026, the number 1 metric is the private share – that is, the moment someone sends your post to a friend via direct message (DM – private message). Adam Mosseri, head of Instagram, publicly confirmed this change: private shares are now the main signal the algorithm uses to decide how widely to distribute a post.
The logic is simple: if someone sends content to a friend, it means that content is genuinely valuable to them. A like takes two seconds. A private share means a real recommendation.
What other important changes did Instagram bring in 2026?
- Instagram SEO (optimisation for internal search): the algorithm now also analyses the spoken text in videos – not just the written description. If you say "car service Craiova" in a video, Instagram understands what it is about and shows your content to people interested in that topic.
- Notes on Posts: users can add 24-hour notes to their friends' posts – a new form of interaction that generates additional engagement.
- Your Algo: users can now customise their Reels feed by choosing specific topics – the first time Instagram gives direct control over what they see.
- Reels dominate the feed: short-form video now takes up most of the feed. Static posts have significantly lower visibility than videos.
- AI editing tools: Instagram has integrated AI (artificial intelligence) tools for automatic captions, hashtag suggestions and video editing.
How important is this change for a business?
Important signal for the algorithm
Signal of reduced importance
What should you do differently from now on?
The algorithm's new rules also change your content strategy. Here is what works in 2026:
- Create content worth sharing. Ask yourself before every post: "Would anyone send this to a friend?" Practical tips, useful information, funny or surprising moments – these generate private shares.
- Use captions and relevant spoken text. Say the keywords that matter for your business in the video. Instagram indexes them and uses them to show your content to the right people.
- Encourage saving the post. "Save this for later" content – useful lists, tutorials, quick guides – generates saves, the second most important signal.
- Reply to comments quickly. Conversations in the comments signal to the algorithm that your post generates real engagement.
- Post Reels consistently. Short videos clearly have priority in the feed. Even a simple video shot on a phone beats a professional photo for visibility.
What comes next?
According to Metricool, the Instagram strategy is moving definitively from "how many followers do I have" to "how often is my content shared privately". Brands that understand this change now will build a truly loyal audience, not just a collection of likes.
Want to know how your Instagram account measures up against the algorithm's new rules and what you can improve? The Altanet Craiova team can help you with a concrete analysis. Go to our contact page and let's talk.
This article is part of the Altanet series on changes in social media and SEO in 2026. Next article: TikTok 2026: From Funny Videos to 26 Billion Dollars in Sales. See also the complete guide to the series.