Model weights ruled as infringing copies: first-instance ruling in GEMA v. Suno

模型权重也会成为侵权复制品？从 Suno 案看 AI 发布的版权新防线

A Munich court ruled in first instance that Suno's model weights themselves constitute infringing copies. GEMA prompted Suno v3.5 and v4 with lyrics and style only, sampling 4–176 times per track, and obtained recognizable melodies from 5 songs. The court accepted this black-box extraction as proof of memorization, found US fair use inapplicable, and held that storing the weights on German servers infringes copyright. The ruling is not yet final; Suno is evaluating an appeal. The article proposes six engineering controls for model releases, including extraction testing and jurisdiction-based storage review.

Why it matters: A Munich court ruled Suno's model weights themselves constitute infringing copies, extending copyright review to the model file itself. GEMA proved memorization via black-box sampling with concrete methodology. Score tempered because it's a first-instance ruling not yet final,...