• LLM — A large language model — the neural network behind tools like Claude and ChatGPT, trained on huge amounts of text to predict what comes next.
• hallucination — When a model states something false with full confidence — inventing facts, citations, or APIs that don't exist.

Off-the-shelf LLMs make poor recommenders — they over-recommend popular titles, hallucinate items outside the catalog, and ignore business constraints. Netflix post-trained an internal foundation model on its own data and objectives to close that gap in production.

• blogIn-House LLM Serving at Netflix
• blogGenPage: Towards End-to-End Generative Homepage Construction at Netflix

• articleNetflix PRS 2024 - Applying LLMs to Recommendation ExperiencesEugene Yan
• articleHow Generative Recommenders Are Redefining RecSys at ScaleElizabeth Goodman
• articleImproving Recommendation Systems & Search in the Age of LLMseugeneyan.com

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