X (Twitter) Algorithm 2026: How the Ranking System Actually Works
You post a link to your latest offer on X, and it barely moves. A competitor posts a slightly cheeky reply to a bigger account in your industry, and it ends up in front of thousands of people for free. That is not luck. Since January 2026, X has been rewarding a completely different kind of behaviour, and most businesses have not caught up.
In 18 years running Optimise Your Marketing from Cromford Mills in Derbyshire, I have watched East Midlands businesses keep posting on X the way they did five years ago, broadcasting links and announcements, while the platform underneath them has quietly rebuilt itself around conversation.
This post expands on a point I made in our guide to how algorithms fit into every part of the BIG12: X now runs on a Grok-powered transformer model with steep engagement weighting. Here is exactly what that means for your posts.
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In January 2026, X replaced its legacy recommendation system entirely with a Grok-powered transformer model. This was not a tweak to the old algorithm, it was a rebuild from the ground up, and it changed which behaviours actually get rewarded with reach.
Posts are now pulled from three separate sources, in-network content from accounts you follow, out-of-network content the model predicts you will like, and interest-graph content matched to topics you engage with, into a single candidate pool before ranking begins.
Why a Reply Is Worth Roughly 27 Times a Like
The new model ranks with steep engagement weighting, and the gap between passive and active engagement is now enormous. A reply is worth roughly 27 times a like, and a genuine back-and-forth conversation is worth roughly 150 times a like. This is by far the widest engagement gap of any major platform, and it explains why link-only, broadcast-style posts consistently underperform posts that open a genuine conversation.
On X, a like is worth almost nothing. A real reply is worth 27 of them, and a genuine conversation is worth 150. If you are still posting to be liked, you are optimising for the weakest signal on the entire platform. Stuart Baddiley, Optimise Your Marketing
Visibility Decays Fast
A post's visibility roughly halves every six hours, which is a far steeper decay curve than most other platforms. This makes timing genuinely strategic on X in a way it is not everywhere else. A post that does not gain traction quickly is very unlikely to recover later, so the first few hours after posting carry disproportionate weight.
Video Is Boosted, Links Are Penalised
Video content is strongly boosted by the new model, consistent with the direction every major platform has taken. At the same time, posts containing external links now see meaningfully reduced initial reach, because the model treats a link as an exit point rather than an engagement opportunity. This does not mean never link out, it means a link-heavy posting habit will quietly cap your reach if it is not balanced with genuinely native, conversation-first content.
When a Derbyshire B2B brand stopped posting links and started posting opinions
A client across the East Midlands had been posting a link to their blog on X almost every day, with minimal engagement. We shifted their approach to genuine industry opinions and direct replies to relevant conversations, saving links for a smaller share of posts. Impressions grew more than fourfold within six weeks, and website referrals from X actually increased despite fewer direct links.
See how we approach Social MediaHow This Connects to the BIG12 Framework
X sits inside Social Media, but the underlying lesson, that genuine engagement now consistently outweighs passive reach and outbound links, echoes across nearly every platform in the BIG12. Derbyshire businesses who understand this stop treating every platform update as a threat and start treating it as a signal to adjust. We cover this properly in our online marketing training, and in our wider guide to where algorithms fit into every part of the BIG12.
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Knowing that a reply outweighs a like by 27 times is the easy part. Actually shifting a content calendar away from broadcast-style posting, engaging in genuine conversations consistently, and timing posts around a six-hour decay curve, that is where most Derbyshire and East Midlands business owners run out of time.
That is the gap we close. In 18 years of applying the BIG12 for UK SMBs, the accounts that grow on X are never the ones posting the most links, they are the ones showing up in conversations, consistently, with the algorithm in mind.
If X has felt like shouting into the void, it is worth finding out whether the platform, or the approach, was ever the real problem.
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