Fadr vs StemSplit

Fadr is a music tool for separating vocals and 15 other instruments from songs, making remixes and DJ sets, and creating instruments and drum kits with AI. Fadr Basic offers unlimited stems, remixes, and DJ sets, with high-quality MP3 downloads; song uploads on Basic are limited to 10 minutes. Fadr Plus provides 18 stem types, uploads up to one hour, WAV downloads, plugins, API access, and unlimited storage for $10/mo.

Siren makes playable instruments from words and provides ADSR controls and low-pass, high-pass, band-pass, and notch filters. DrumGPT creates 16-element drum kits from text prompts, with pitch, volume, and amplitude-envelope controls. The Stems Plugin works with major DAWs and other software that supports VST3, with Windows VST3 and Mac VST3/AU support. Siren is available online, as an iPhone and iPad app, and as an audio plugin. The API separates songs into vocals, drums, bass, melodies, and instrumental, and detects MIDI, chords, key, and tempo. API use requires Fadr Plus; its Create Stem Task endpoint costs US$0.05 per minute of audio.

StemSplit separates songs into vocals, instrumentals, and other stems for karaoke, music production, and audio editing. It offers four-stem separation and a six-stem mode that additionally separates guitar and piano. Users can upload MP3, WAV, FLAC, M4A, OGG, WEBM, AAC, OPUS, AIFF, AIF, or WMA files up to 100 MB, or submit YouTube and SoundCloud URLs. Batch processing is supported, with MP3, WAV, and FLAC exports. The service says most tracks finish in under a minute and advertises separation accuracy above 95%. It runs on the web, through a Chrome extension, and via a REST API with webhooks. Credit packages include API access and do not expire: Starter costs $2, paid once for 10 minutes, Standard $5, paid once for 30 minutes, Pro $12, paid once for 100 minutes, and Studio $30, paid once for 300 minutes. A free plan and free trial are listed.