https://whatchangedonx.com/2026-10-29T18:00:00+00:00https://whatchangedonx.com/changes/2026-10-29.html2026-10-29T18:00:00+00:00

Four new pieces of code decide how ads are spaced between posts. They don't change your post's score.

https://whatchangedonx.com/changes/2026-10-28.html2026-10-28T18:00:00+00:00

This went from 1 day to 7 days.

https://whatchangedonx.com/changes/2026-10-27.html2026-10-27T18:00:00+00:00

The ranking model is now sent extra inputs to correct for bias, likely position bias (posts higher up get more clicks just for being there). The effect on reach is unclear.

https://whatchangedonx.com/changes/2026-10-24.html2026-10-24T18:00:00+00:00

The only live switch was an ad-tracing tool.

https://whatchangedonx.com/changes/2026-10-23.html2026-10-23T18:00:00+00:00

X changed which experimental models get a slice of traffic. We can't see results.

https://whatchangedonx.com/changes/2026-10-22.html2026-10-22T18:00:00+00:00

We think this stops a few authors dominating a feed. That's an inference from the name and code, not confirmed.

https://whatchangedonx.com/changes/2026-10-21.html2026-10-21T18:00:00+00:00

From the name, it spreads feed space more evenly, probably across authors. It was switched on the next day.

https://whatchangedonx.com/changes/2026-10-20.html2026-10-20T18:00:00+00:00

A new setting shows X looks at the last 28 days of your history to pick topics. It's new as a setting, not necessarily new behaviour.

https://whatchangedonx.com/changes/2026-10-17.html2026-10-17T18:00:00+00:00

The carousel now de-duplicates by author and by visual similarity, and both are on by default.

https://whatchangedonx.com/changes/2026-10-16.html2026-10-16T18:00:00+00:00

It added 'video embeddings', which are fingerprints of what a video looks like. This lays the groundwork for the next day's change.

https://whatchangedonx.com/changes/2026-10-15.html2026-10-15T18:00:00+00:00

A new scorer for the full-screen video feed was added, weighted on video opens for now. Whether it's in heavy use isn't clear from the code.

https://whatchangedonx.com/changes/2026-10-14.html2026-10-14T18:00:00+00:00

The like weight went from 0.6 to 0.66, which is +32% across two days.

https://whatchangedonx.com/changes/2026-10-13.html2026-10-13T18:00:00+00:00

The weight on likes went from 0.5 to 0.6. Likes push a post further than they did yesterday.

https://whatchangedonx.com/changes/2026-10-09.html2026-10-09T18:00:00+00:00

Mostly model-training code and data plumbing. Nothing that moves your reach.

https://whatchangedonx.com/changes/2026-10-08.html2026-10-08T18:00:00+00:00

That check now only runs on posts from accounts over 180,000 followers (it was 125,000). Big but not huge accounts get looser checks on the replies under their posts.

https://whatchangedonx.com/changes/2026-10-07.html2026-10-07T18:00:00+00:00

The popular-posts source from 3 Oct is now switched on by default. Already-popular posts from top authors get an extra route into people's feeds.

https://whatchangedonx.com/changes/2026-10-06.html2026-10-06T18:00:00+00:00

One pipeline now passes up to 100,000 candidates instead of 200. That's mostly an engineering change, and what it does to reach is unclear.

https://whatchangedonx.com/changes/2026-10-03.html2026-10-03T18:00:00+00:00

X built a source that pulls in popular posts from the top 1,000 authors, max 3 each. It was switched on four days later (see 7 Oct).

https://whatchangedonx.com/changes/2026-10-02.html2026-10-02T18:00:00+00:00

X added a new place to pull recommended posts from (called 'sid source'). From the settings it looks like it finds posts similar to ones you've already engaged with, capped at 800 per feed. We can't see whether it's switched on for everyone yet.

https://whatchangedonx.com/changes/2026-10-01.html2026-10-01T18:00:00+00:00

X swapped how it times the little 'how's your feed?' surveys, from hours to minutes. Same 24-hour gap as before, just counted differently.