Stable Audio 3

• URL: http://arxiv.org/abs/2605.17991v1
• Date: Mon, 18 May 2026 07:47:03 GMT
• Title: Stable Audio 3
• Abstract summary: Stable Audio 3 is a family of fast latent diffusion models for variable-length audio generation and editing.<n>Our models can generate several minutes of audio, variable-length generations are key to avoid the cost of producing full-length generations for short sounds.
• Score: 13.654044564278442
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Stable Audio 3 is a family of fast latent diffusion models (small, medium, large) for variable-length audio generation and editing. Since our models can generate several minutes of audio, variable-length generations are key to avoid the cost of producing full-length generations for short sounds. We also support inpainting, enabling targeted audio editing and the continuation of short recordings. Our latent diffusion models operate on top of a novel semantic-acoustic autoencoder that projects audio into a compact latent space, enabling efficient diffusion-based generation while preserving audio fidelity and encouraging semantic structure in the latent. Finally, we run adversarial post-training to both accelerate inference and improve generation quality, reducing the number of inference steps while improving fidelity and prompt adherence. Stable Audio 3 models are trained on licensed and Creative Commons data to generate music and sounds in less than a 2s on an H200 GPU and less than a few seconds on a MacBook Pro M4. We release the weights of small and medium, that can run on consumer-grade hardware, together with their training and inference pipeline.

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