X to Roll Out Grok AI Recommendation Algorithm Next Week
X is set to fully integrate its Grok AI chatbot into the platform’s core content recommendation algorithm starting next week. According to the company’s head of product, this update marks the most significant change in the platform’s history.
“The full power of Grok on the algorithm launches next week. It will be the most important change we’ve done on X,” Nikita Bier wrote in a post on the platform on Thursday.
Reportedly codenamed “Phoenix,” the new system uses a Transformer-based architecture and follows an end-to-end learning approach. In addition, the company plans to release the code on GitHub the same day the update goes live.
As a result, X is formally moving away from traditional engagement-based ranking signals such as likes, reposts, and follows. Instead, the platform will rely entirely on AI-driven content analysis to determine what users see.
A Shift Toward Fully AI-Driven Feeds
This integration builds on more than a year of gradual changes. In October 2025, Elon Musk said X would remove all “heuristics” from its algorithm within weeks, with Grok expected to “literally read every post and watch every video” to better match users with relevant content.
Later, in January 2026, X open-sourced parts of its recommendation system. At that time, GitHub documentation noted that the system “relies entirely” on a “Grok-based transformer” to learn relevance from user engagement.
Meanwhile, Nikita Bier, known for founding apps later acquired by major tech firms, joined X as head of product in mid-2025. Since then, he has positioned 2026 as “the year of the creator” and said the platform has doubled creator payouts.
Regulatory Pressure Continues to Build
However, the algorithm overhaul comes amid growing regulatory scrutiny. In February 2025, French prosecutors opened an investigation into X over alleged algorithmic bias following complaints that the platform’s systems may have distorted automated data processing. In response, X called the probe “politically motivated” and declined to cooperate with requests to provide access to its recommendation algorithm.
More recently, in February 2026, French authorities and Europol raided X’s Paris offices as part of the ongoing investigation.
Separately, the European Commission launched a formal investigation in January 2026 under the Digital Services Act. The inquiry is examining whether X properly assessed risks linked to Grok’s deployment in the EU, including the spread of illegal content such as manipulated sexually explicit images.
Furthermore, the Commission ordered X to retain all Grok-related internal documents through the end of 2026.
Ultimately, whether the Grok-powered algorithm improves user experience or increases regulatory friction may depend on one undisclosed factor: how many of the platform’s claimed 600 million monthly users actually rely on the algorithmic “For You” feed.
