Transforming AI Research into Personalized Listening: Spotify at NeurIPS 2025

Spotify demonstrates how it translates AI research into production features through four live applications: voice-driven DJ requests, AI Playlist with preference alignment using RLHF/DPO, Ray-Ban Meta glasses integration for ambient listening, and audiobook Recaps. The company's approach combines agentic AI systems, generative preference-aligned models, closed-loop feedback, and scalable infrastructure to deliver personalized audio experiences. Key technical innovations include LLM-based orchestration, Direct Preference Optimization that increased listening time by 4%, and context-adaptive models for real-time intent detection across music and audiobook content.