Pymss vs Spleeter
Pymss
pymss.netSpleeter
github.comSide by side
| Figure | Pymss | Spleeter |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 2 |
| Spec score · AI stem splitters | 8.7 (#5) | 7.7 (#17) |
| Spec score · Stem Separation Software | 8.6 (#5) | 7.5 (#16) |
| Integrations | The project provides ComfyUI custom nodes and a VST3 ARA plugin for use in DAWs. | The project README names Spleeter 4 Max for Ableton Live and lists professional audio products using its pre-trained models, including iZotope RX 8, Steinberg SpectraLayers 7, Acon Acoustica 7, VirtualDJ, and Algoriddim NeuralMix and djay Pro. |
| Purpose | Pymss is an open source music source separation toolchain that separates vocals, drums, bass, and other stems on the user's machine. | Spleeter separates vocals and instruments from audio files and can recreate multitracks from a flat audio file. |
| Support | The project points users to GitHub documentation and an issue tracker, and its Studio README lists a QQ group for Chinese beta testing, bug reports, and community discussion. | The commercial offering advertises dedicated professional support, while Deezer says the open-source forks and websites built on Spleeter are not hosted, maintained, or directly supported by Deezer. |
Plans
In their own words
Pymss
Pymss is an open-source music source-separation toolchain that runs on the user's own machine and separates audio into vocals, drums, bass, and other stems. Its Studio desktop workspace handles model management, batch jobs, and stem editing. Users can import files or folders, choose a downloaded model, configure inference, and queue work. Studio can browse, download, resume, and delete model files, with storage cleanup controls. Waveform previews, mix controls, saved projects, and stem export support work on the results. Pymss can chain models so each workflow step uses the preceding step's output. The inference package lists WAV, FLAC, MP3, M4A, AAC, Opus, Vorbis, and Ogg output. Other components include ComfyUI custom nodes, a VST3 ARA plugin for compatible DAWs, and a browser interface bundled with the server. The ARA plugin provides per-stem mute and solo controls; its README gives Reaper and Studio One as host examples. The repositories have separate licenses: Studio is listed under AGPL-3.0 and the inference package under MIT. Studio remains at an early development stage, and changes between versions may break things.