How does X decide who sees my posts in 2026?
Short answer
The For You feed is ranked by a Grok-based model called Phoenix. For each viewer it predicts how likely they are to reply, share, like, mute, report and so on, multiplies each chance by a weight, and adds them up. The highest totals are shown first.
So nothing is scored on your raw like count. A post ranks well when the model expects the people seeing it to act on it.
Source: xai-org/x-algorithm, home-mixer