X just pushed more For You Recommendation Algorithm code to GitHub. Credit to @XOpenSource. What this drop does to your feed: - Grok Analyze can rank For You. The ranker can now score how likely you are to tap Grok Analyze, so explain-this posts can climb. The weight starts at 0. Until it turns on, nothing moves. After that, Grok-bait posts can jump. - Reduced-reach is its own feed state. A limited post can show a dedicated warning and limited actions, not a sticker on a normal post. Quotes of those posts still show. A retweet can carry the warning to people who follow the original author. - Blur beats the reduced-reach banner. If a post is already blurred as sensitive, you do not get a second reduced-reach overlay. You may miss that the post was also downranked, because only the blur shows. - Blocked-by fail-open got tighter. Hide-because-they-blocked-you only fail-opens on the check that post actually needed. Nested replies whose original is out of the batch can leak in if the lookup times out. Best-effort lookups now give up in 100ms. - Mentions filter the post, follows the person. A mention, reply, or photo tag is judged as that post, so limited posts can stay out of alerts. Follow alerts still judge the person. Mixing follow and mention alerts in one request fails.