ShiZhen AI

Jan 20, 2026 · Artificial Intelligence

Inside X’s Open‑Source ‘For You’ Algorithm: How AI Drives Your Attention

The article dissects X’s newly open‑sourced ‘For You’ feed algorithm, detailing its Rust and Python implementation, the Home Mixer pipeline, candidate sourcing, Grok‑based scoring, and extensive filtering, showing how machine‑learning predicts user interactions and shapes the content you see.