License and usage rights

Engine used

AMS uses ai-music-js 0.5.0 with FP32/hybrid modifications: ACE-Step 1.5 XL Turbo INT4 on WebGPU and FP32 VAE on CPU/WASM. XL export: emb1ter/ACE-Step-v1.5-XL-Turbo-ONNX-WebGPU, revision cf185389395b3a725d948a59262f3ab4be4b0ad8. Shared artifacts: shreyask/ACE-Step-v1.5-ONNX at bdabfb5684fd70fcc76f98cbb51bb9ebc47ee342.

Licenses and notices

ai-music-js, ACE-Step XL, and the XL export: MIT. Shared shreyask conversion, Qwen, and Transformers.js: Apache-2.0. ONNX Runtime Web: MIT with bundled component notices. fflate and Phosphor: MIT; Inter font: SIL Open Font License. License texts and attribution remain in the distribution. AMS modifications are documented separately.

Commercial use and limitations

MIT and Apache-2.0 permit commercial use of the components under their terms. Preserve required notices when redistributing code or models. These permissions are not an ownership certificate for each audio output and do not guarantee that a track will not resemble existing work or receive a Content ID claim.

Check the output before publishing

Listen to the whole track, check obvious similarities and the terms of your publishing platform. Keep the prompt, date, and model version. Track information downloads informational data; it is not an official intellectual property certificate.

Texts and sources

• ai-music-js — MIT
• Third-party notices
• ACE-Step — MIT
• Apache-2.0
• AMS modifications
• XL ONNX model