https://algowatchx.pages.dev/Plain-English changes to X's algorithmhttps://algowatchx.pages.dev/changes/2026-10-29.htmlhttps://algowatchx.pages.dev/changes/2026-10-29.htmlThu, 29 Oct 2026 18:00:00 +0000Four new pieces of code decide how ads are spaced between posts. They don't change your post's score.https://algowatchx.pages.dev/changes/2026-10-28.htmlhttps://algowatchx.pages.dev/changes/2026-10-28.htmlWed, 28 Oct 2026 18:00:00 +0000This went from 1 day to 7 days.https://algowatchx.pages.dev/changes/2026-10-27.htmlhttps://algowatchx.pages.dev/changes/2026-10-27.htmlTue, 27 Oct 2026 18:00:00 +0000The 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://algowatchx.pages.dev/changes/2026-10-24.htmlhttps://algowatchx.pages.dev/changes/2026-10-24.htmlSat, 24 Oct 2026 18:00:00 +0000The only live switch was an ad-tracing tool.https://algowatchx.pages.dev/changes/2026-10-23.htmlhttps://algowatchx.pages.dev/changes/2026-10-23.htmlFri, 23 Oct 2026 18:00:00 +0000X changed which experimental models get a slice of traffic. We can't see results.https://algowatchx.pages.dev/changes/2026-10-22.htmlhttps://algowatchx.pages.dev/changes/2026-10-22.htmlThu, 22 Oct 2026 18:00:00 +0000We think this stops a few authors dominating a feed. That's an inference from the name and code, not confirmed.https://algowatchx.pages.dev/changes/2026-10-21.htmlhttps://algowatchx.pages.dev/changes/2026-10-21.htmlWed, 21 Oct 2026 18:00:00 +0000From the name, it spreads feed space more evenly, probably across authors. It was switched on the next day.https://algowatchx.pages.dev/changes/2026-10-20.htmlhttps://algowatchx.pages.dev/changes/2026-10-20.htmlTue, 20 Oct 2026 18:00:00 +0000A 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://algowatchx.pages.dev/changes/2026-10-17.htmlhttps://algowatchx.pages.dev/changes/2026-10-17.htmlSat, 17 Oct 2026 18:00:00 +0000The carousel now de-duplicates by author and by visual similarity, and both are on by default.https://algowatchx.pages.dev/changes/2026-10-16.htmlhttps://algowatchx.pages.dev/changes/2026-10-16.htmlFri, 16 Oct 2026 18:00:00 +0000It added 'video embeddings', which are fingerprints of what a video looks like. This lays the groundwork for the next day's change.https://algowatchx.pages.dev/changes/2026-10-15.htmlhttps://algowatchx.pages.dev/changes/2026-10-15.htmlThu, 15 Oct 2026 18:00:00 +0000A 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://algowatchx.pages.dev/changes/2026-10-14.htmlhttps://algowatchx.pages.dev/changes/2026-10-14.htmlWed, 14 Oct 2026 18:00:00 +0000The like weight went from 0.6 to 0.66, which is +32% across two days.https://algowatchx.pages.dev/changes/2026-10-13.htmlhttps://algowatchx.pages.dev/changes/2026-10-13.htmlTue, 13 Oct 2026 18:00:00 +0000The weight on likes went from 0.5 to 0.6. Likes push a post further than they did yesterday.https://algowatchx.pages.dev/changes/2026-10-09.htmlhttps://algowatchx.pages.dev/changes/2026-10-09.htmlFri, 09 Oct 2026 18:00:00 +0000Mostly model-training code and data plumbing. Nothing that moves your reach.https://algowatchx.pages.dev/changes/2026-10-08.htmlhttps://algowatchx.pages.dev/changes/2026-10-08.htmlThu, 08 Oct 2026 18:00:00 +0000That 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://algowatchx.pages.dev/changes/2026-10-07.htmlhttps://algowatchx.pages.dev/changes/2026-10-07.htmlWed, 07 Oct 2026 18:00:00 +0000The 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://algowatchx.pages.dev/changes/2026-10-06.htmlhttps://algowatchx.pages.dev/changes/2026-10-06.htmlTue, 06 Oct 2026 18:00:00 +0000One 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://algowatchx.pages.dev/changes/2026-10-03.htmlhttps://algowatchx.pages.dev/changes/2026-10-03.htmlSat, 03 Oct 2026 18:00:00 +0000X 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://algowatchx.pages.dev/changes/2026-10-02.htmlhttps://algowatchx.pages.dev/changes/2026-10-02.htmlFri, 02 Oct 2026 18:00:00 +0000X 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://algowatchx.pages.dev/changes/2026-10-01.htmlhttps://algowatchx.pages.dev/changes/2026-10-01.htmlThu, 01 Oct 2026 18:00:00 +0000X swapped how it times the little 'how's your feed?' surveys, from hours to minutes. Same 24-hour gap as before, just counted differently.