Stable Audio 3 Review — Open-Weight Music and SFX Generation on Licensed Data

Stability AI released Stable Audio 3 on May 20, 2026 — a family of open-weight audio generation models trained entirely on licensed data. The family includes four variants from 433M to 2.7B parameters, runs on consumer hardware including CPU-only inference, generates up to 380 seconds of audio, and ships with LoRA fine-tuning and inpainting support. We cover the model family, technical architecture, training data, licensing, hardware requirements, and how it compares to Suno v5.5 and other audio generation tools.