AI Mastering vs Auralith Forge

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.

Auralith Forge is a web service for automated music mastering. Its adaptive DSP measures loudness, tonal balance, dynamics, and stereo width before applying processing such as EQ, compression, saturation, and true-peak-safe limiting. Users can make instant level-matched A/B comparisons, use artist profiles, and preview codecs; stem separation is available as an option for rebalancing vocals and accompaniment separately. Free accounts also get unlimited chord, key, BPM, chord-progression, and LUFS analysis tools. Uploads can be up to 200 MB in WAV, AIFF, FLAC, MP3, M4A, AAC, OGG, WMA, MP4, or WebM, with WAV or MP3 exports. The Free plan includes three full-length masters once and unlimited 30-second previews. Paid options include a one-time extra master for €2.99, Indie at €4.99 per month, Studio at €9.99 per month, and All-Access at €19.99 per month. The Professional engine, included with Studio and All-Access, adds separate sub and punch bands and a transient-aware clipper. Uploaded audio, masters, and codec previews are deleted from servers 48 hours after creation.