---
title: "X publishes its feed algorithm on GitHub, and it is all built on Grok"
description: "X released a description and outline of its post-ranking system. The EU had earlier fined X $140 million."
url: https://kurddevelopers.com/en/news/x-open-sources-algorithm-grok
language: en # English
type: news
published: 2026-01-20T20:35:00.000Z
updated: 2026-11-01T22:20:13.000Z
author: "Osamah Ismail"
author_url: https://kurddevelopers.com/en/author/1
section: "AI"
tags: ["X","Grok","Algorithm","GitHub","Open source"]
sources: ["X (GitHub)","TechCrunch"]
image: https://kurddevelopers.com/uploads/2026/11/series-e-c9c94e36-e6bf008c.webp
translations:
  ku: https://kurddevelopers.com/news/x-open-sources-algorithm-grok
  ar: https://kurddevelopers.com/ar/news/x-open-sources-algorithm-grok
publisher: Kurd Developers
publisher_url: https://kurddevelopers.com/
---

# X publishes its feed algorithm on GitHub, and it is all built on Grok

> X released a description and outline of its post-ranking system. The EU had earlier fined X $140 million.

![Image: xAI](https://kurddevelopers.com/uploads/2026/11/series-e-c9c94e36-e6bf008c.webp)

On January 20, **X** published a description and outline of the code behind its post-ranking feed on **GitHub**.

## What's inside?

According to the documentation, the new system runs **"entirely on a Grok-based transformer"**. In other words, Grok's AI decides which posts appear in your feed.

## Musk's promise

Elon Musk had promised on X to open the algorithm "within 7 days" and to publish updates "every four weeks".

## Pressure on X

- In December the European Union fined X **$140 million** under the **Digital Services Act (DSA)** over transparency obligations
- California's attorney general is investigating inappropriate images generated by Grok

**Sources:** X (GitHub), TechCrunch

---

Published by [Kurd Developers](https://kurddevelopers.com/) on 2026-01-20. Cite as: “X publishes its feed algorithm on GitHub, and it is all built on Grok”, Kurd Developers, https://kurddevelopers.com/en/news/x-open-sources-algorithm-grok