21CTO

Aug 14, 2026 · Artificial Intelligence

Inside X’s Open‑Source Ranking Algorithm: Boosting Transparency and Code Quality

Elon Musk’s X platform has released over 300,000 lines of its recommendation and ranking code on GitHub under Apache v2, adding a new “Under the Hood” transparency tool, detailed model configurations, and a Transformer‑based Phoenix scoring system, while explaining the multi‑stage ranking pipeline and its limitations.