X has significantly updated its algorithm repository, marking the second major commit since January 2026. The update, made on May 15, 2026, includes 187 files with 18,263 lines added and 926 lines deleted. Key advancements include the implementation of runnable inference pipelines and ad mixing logic, alongside an end-to-end demonstration of the Phoenix recommendation model. This model now supports full recall and ranking workflows, enhancing the recommendation system's real-world applicability. The update also introduces approximately 3 GB of Phoenix model artifacts for example inference, although discrepancies in parameter documentation remain. Additionally, the advertising component has been expanded, with ad insertion now dynamically influenced by various factors such as safety intervals and brand safety rules. A new content understanding pipeline has been added, covering spam detection and policy compliance. This update brings X's recommendation system closer to a researchable sample, significantly advancing from the initial January release.