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StemSplit
Lahaina, Hawaii, United States
What it is
StemSplit separates songs into vocals, instrumentals, and other stems for karaoke, production, and editing. It offers four-stem separation, plus a six-stem mode that additionally separates guitar and piano. You 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 site says most tracks finish in under a minute and advertises 95%+ separation accuracy. StemSplit is available on the web, through a Chrome extension, and via a REST API with webhooks. API access comes with the one-time credit packages, which never expire. Listed integrations include GitHub Actions, MCP, n8n, Zapier, Make, Pipedream, Power Automate, and Discord. Plans start at $2, paid once for 10 minutes.
For and against
For
- Four- and six-stem separation modes
- Accepts many audio formats and URLs
- Supports batch processing and three export formats
- REST API includes webhooks
- Credits never expire
Against
- Uploads are limited to 100 MB
- Original audio is deleted within 48 hours
- Processed uploads remain downloadable for 14 days
- Plans are one-time credit packages
The verdict
StemSplit offers file and URL-based stem separation with web, extension, and API access. Its permanent credits and broad integrations suit occasional or automated audio workflows.
Who it suits
StemSplit suits producers, DJs, karaoke users, creators, podcasters, educators, students, audio editors, and developers needing separated tracks. It also fits workflows requiring an API, extension, or automation integrations.
Plans and prices
Starter
10 minutes · $0.20/minute · credits never expire · full API access
Read 7 Oct 2026 · stemsplit.io
Standard
30 minutes · $0.17/minute · credits never expire · full API access
Read 7 Oct 2026 · stemsplit.io
Pro
100 minutes · $0.12/minute · credits never expire · full API access
Read 7 Oct 2026 · stemsplit.io
Studio
300 minutes · $0.10/minute · credits never expire · full API access
Read 7 Oct 2026 · stemsplit.io
On the record
- API
- A REST API with webhooks is available, and API access is included with the listed credit packages.stemsplit.io · read 7 Oct 2026
- Audio URLs
- Users can submit YouTube or SoundCloud URLs for processing.stemsplit.io · read 7 Oct 2026
- Extension
- The privacy policy describes a Chrome extension that sends a YouTube or SoundCloud URL and title to StemSplit only when the user clicks “Split Stems.”stemsplit.io · read 7 Oct 2026
- Integrations
- The maker lists integrations and guides for GitHub Actions, MCP, n8n, Zapier, Make, Pipedream, Power Automate, and Discord.stemsplit.io · read 7 Oct 2026
- Intended users
- The maker identifies producers and DJs, karaoke enthusiasts, creators, podcasters, audio editors, educators, students, and developers as audiences.stemsplit.io · read 7 Oct 2026
- Maker background
- StemSplit says it is an indie product built and maintained by a solo developer.stemsplit.io · read 7 Oct 2026
- Performance
- The site states that most tracks finish in under a minute and advertises 95%+ separation accuracy.stemsplit.io · read 7 Oct 2026
- Pricing model
- StemSplit sells processing minutes as pay-as-you-go credits that do not expire, with no subscription required.stemsplit.io · read 7 Oct 2026
- Purpose
- StemSplit removes vocals and separates songs into stems for karaoke, instrumentals, and music production.stemsplit.io · read 7 Oct 2026
- Security and retention
- The privacy policy says data is encrypted in transit and at rest, original uploaded audio is deleted within 48 hours, and processed uploads remain downloadable for 14 days.stemsplit.io · read 7 Oct 2026
- Stem outputs
- It offers four-stem separation and a six-stem mode that additionally separates guitar and piano.stemsplit.io · read 7 Oct 2026
- Support
- The site directs users with questions to its contact page for support.stemsplit.io · read 7 Oct 2026
- Uploads
- The site accepts common audio formats including MP3, WAV, FLAC, M4A, OGG, WEBM, AAC, OPUS, AIFF, AIF, and WMA, with a 100 MB maximum file size.stemsplit.io · read 7 Oct 2026
