Meta details how Your Algorithm turns natural-language preferences into Facebook Feed and Reels recommendations
Meta published an engineering overview of Your algorithm, a suite of AI tools that lets Facebook users state in natural language what they want to see in Feed and Reels, with a single editable page listing Interested In and Not Interested In topics. Each change is validated by a smaller LLM, enriched with embeddings and search keywords, and saved to a shared store that both Feed and Reels read, while a fine-tuned LLM reranker removes content matching newly added Not Interested In topics. Meta says a supplementary tail load and client-side cache invalidation make changes take effect faster, and that a separate LLM judge grades outputs such as the Lately Summary before launch.