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The original was posted on /r/rust by /u/Then-Ad2186 on 2026-01-20 07:35:25+00:00.

X/xAI open-sourced the “For You” feed code:

[https://github.com/xai-org/x-algorithm](https://github.com/xai-org/x-algorithm]())

Notable part: a big chunk of the recommendation pipeline is written in Rust (candidate gen, ranking orchestration, feed assembly). Good real-world example of Rust at massive scale, especially for ML-adjacent systems.