Deezer用LLM给每日推荐写标题，百万用户真用上了，参与度还涨了——不是PPT，是上线产品。
Deezer在2025年部署了基于大型语言模型（LLM）的自动播放列表标注系统。该系统为Daily Mix功能生成自然语言描述，覆盖数百万用户。部署后用户参与度显著提升，表明语义描述如何影响用户对个性化推荐的感知。论文发表于arXiv，编号2606.22460v1。
Music Playlist Captioning at Scale with Large Language Models
Music streaming services such as Deezer often recommend personalized playlists to users. Playlist captioning, which involves describing these playlists in natural language, is essential for helping users understand the content behind each recommendation, yet remains challenging at scale. This paper presents the automatic playlist captioning system deployed on Deezer in 2025 to address this challenge. Leveraging recent advances in large language models (LLMs) to generate descriptive captions from diverse data sources in a controlled manner, this system now powers the Daily Mix feature, used by millions of users. This deployment has led to significant improvements in user engagement, highlighting how the semantic framing of an unchanged recommendation shapes user perception in online personalized experiences.