Show HN: X open sourced their algorithm

Category: ai-ml

Tags: recommendation-system, transformer, machine-learning, rust, social-media, open-source

Score: 7.5/10 (Innovation: 6, Technical: 8, Documentation: 9, Utility: 7)

This project open-sources the core recommendation algorithm behind X's 'For You' feed, combining in-network and out-of-network candidate sourcing with a Grok-based transformer for ranking. It provides a complete pipeline from retrieval to ranking, including pre-trained models and content understanding services, making it a rare and practical glimpse into a major platform's production recommendation system.

Target audience: backend devs, machine learning engineers, data engineers

Repository: https://www.xalgorithm.xyz/en · Rust · Apache-2.0 · 19301 stars

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