Stem Splitter Tools: A Guide to Every Major Option

Vocal isolation + multi-stem on higher plans · Credit-based pricing

Known for particularly clean vocal isolation on pop and R&B material. The credit model suits irregular users who prefer paying per use rather than a monthly subscription. Full multi-stem breakdown is available on higher-tier plans, though vocal isolation is where it stands out.

Multi-stem separation · Professional pricing tier

Regarded in professional audio circles for best-in-class output fidelity. Aimed at commercial production environments where artifact-free stems justify a higher price point. Not a casual tool, but worth knowing about if the quality ceiling of free and lower-cost options is a real limitation in your work.

4-stem separation + key, BPM, chords · iOS and Android apps available

A web and mobile app combining stem separation with key and BPM detection, pitch shifting, and AI chord recognition. Useful for musicians who want to do more than just extract stems. The separation quality is solid; the differentiator is the surrounding feature set for practice and arrangement work.

4-stem separation · No account required

A free, no-signup browser-based option from the BandLab ecosystem. Handles standard 4-stem separation and integrates with the broader BandLab tools if you're already in that environment. Output quality is solid for a free tool. Good starting point if you want to test stem splitting without creating an account.

Vocal + instrument separation · No signup

A free browser-based tool offering vocal and instrument separation with no signup required. Good for casual use and quick one-off tasks. Less feature-rich than paid tools but accessible with zero friction.

4-stem and 6-stem separation · Requires Python + GPU

Meta AI Research's model is the current state of the art for music source separation. HTDemucs, the latest version, uses a hybrid transformer/convolutional architecture and supports both 4-stem and 6-stem separation. The model most serious online tools are built on top of.

2-stem, 4-stem, 5-stem · Fast CPU inference, easy batch integration

Deezer's open-source model was the first widely used neural stem splitter. Fast on CPU and easy to integrate into batch processing pipelines. Output quality has been surpassed by HTDemucs, but it remains useful for speed-focused workflows and research baselines.

Multiple AI models (Demucs, MDX-Net, VR Arch) · Windows and macOS

Free open-source desktop software bundling access to multiple AI models including Demucs and MDX-Net variants. Arguably the most powerful free stem splitting tool available, with fine-grained control over model selection, ensemble processing, and output settings. The learning curve is steeper than browser tools, but producers doing this regularly gravitate toward it for serious work.

Music rebalancing + source separation · Windows and macOS

Not primarily a stem splitter, but iZotope RX includes music rebalancing and source separation alongside its industry-standard audio restoration tools. Best suited for workflows where stem separation is one part of a broader cleanup process. See the post on stem separation for audio restoration for when this approach makes sense.

4-stem separation · Session view integration · Included with Live 12 Standard/Suite

Native stem separation accessible directly in the session view. Solid quality on most material and seamless if Ableton is already your DAW. No extra tools or uploads required. Documentation on the Ableton stem separation page.

4-stem separation · Track menu integration · macOS only

Apple added a built-in stem splitter in Logic Pro 11, accessible directly from the track menu. Clean results on standard material with no extra setup. Logic Pro is a one-time $199.99 purchase from the Mac App Store, and stem splitting is included. See Apple's Logic Pro stem splitter docs for details.