AI Mastering vs SoundBoost.ai

AI Mastering is an online service that uses AI to master audio with the aim of improving music sound quality. Its limiter can balance loudness and dynamic range, while the web interface lets users set target loudness and mastering level. It also supports drag-and-drop uploads, output-format customization, spectrum analysis, and loudness analysis. The API supports audio upload and download, mastering, and changes to target loudness and mastering level; its documentation links JavaScript (Node) and Ruby client libraries and tutorials. An offline desktop version is available, and the maker says its focus is shifting toward that version rather than the API. Offline file size depends on the computer’s memory, while the online service has file limits. The maker says online waiting time cannot be shortened and suggests using the offline version to reduce it. A bass-preservation option can reduce low-frequency attenuation. Supported input formats are WAV, MP3, and MP4, and WAV export is available. The free plan lists unlimited mastering, and users retain control over their mastered tracks without service restrictions.

SoundBoost.ai is an online audio mastering service for musicians, artists, and producers. It combines deep learning with LLM technology, letting users describe desired sound changes in natural language. The service also splits audio into vocals, drums, bass, and instruments; Unlimited Plus adds guitar and piano channels. Unlimited and Unlimited Plus include reference mastering. Finished masters can be downloaded as 24-bit WAV or 320 kbps MP3, and SoundCloud tracks can be imported by link. The free plan provides 10 revisions per project but does not allow finalizing or downloading. Free stem-splitting uploads have no daily or monthly count quota, though each file is limited to 1.5 GB and 22 minutes 30 seconds. Unlimited is listed at $48 a year, billed annually. One subscription works across the web, iPhone, iPad, and Android. Users retain ownership of their music and may monetize masters. SoundBoost says it does not train its AI on users' audio or share music with third parties without consent.