x · algorithm
  • Architecture
  • Signals
  • Simulator
  • Playbook
  • Code
  • Pricing
an interactive reverse-engineering guide

Reading the For You feed, like a recsys engineer.

Sources, scorers, signals and virality — visualised from the open-sourced xai-org/x-algorithm code. Not affiliated with X Corp. or xAI.

Algorithm
  • Pipeline
  • Signals
  • Decay
  • Suppression
Interactive
  • Ranking Simulator
  • Viral Score
  • Weight Tuner
  • Pricing
Learn
  • Playbook
  • Code Walkthrough
  • Glossary
Source
  • xai-org/x-algorithm
  • Phoenix paper
© 2026 — Educational fan project. Apache 2.0 licensed code from xai-org/x-algorithm. All trademarks belong to their respective owners.v · 2026.05.15