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SPECIFICTION
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StemSplit

stemsplit.io

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Spec score 7.8 #16 of 26 in AI stem splitters

What it is

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.

Spec sheet

Purpose
StemSplit removes vocals and separates songs into stems for karaoke, instrumentals, and music production.Read 7 Oct 2026 · stemsplit.io
Intended users
The maker identifies producers and DJs, karaoke enthusiasts, creators, podcasters, audio editors, educators, students, and developers as audiences.Read 7 Oct 2026 · stemsplit.io
API
A REST API with webhooks is available, and API access is included with the listed credit packages.Read 7 Oct 2026 · stemsplit.io
Integrations
The maker lists integrations and guides for GitHub Actions, MCP, n8n, Zapier, Make, Pipedream, Power Automate, and Discord.Read 7 Oct 2026 · stemsplit.io
Support
The site directs users with questions to its contact page for support.Read 7 Oct 2026 · stemsplit.io
Headquarters
Lahaina, Hawaii, United StatesRead 28 Sep 2026 · stemsplit.io
Audio URLs
Users can submit YouTube or SoundCloud URLs for processing.Read 7 Oct 2026 · stemsplit.io
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.”Read 7 Oct 2026 · stemsplit.io
Maker background
StemSplit says it is an indie product built and maintained by a solo developer.Read 7 Oct 2026 · stemsplit.io
Performance
The site states that most tracks finish in under a minute and advertises 95%+ separation accuracy.Read 7 Oct 2026 · stemsplit.io
Pricing model
StemSplit sells processing minutes as pay-as-you-go credits that do not expire, with no subscription required.Read 7 Oct 2026 · stemsplit.io
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.Read 7 Oct 2026 · stemsplit.io
Stem outputs
It offers four-stem separation and a six-stem mode that additionally separates guitar and piano.Read 7 Oct 2026 · stemsplit.io
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.Read 7 Oct 2026 · stemsplit.io

Plans and prices

Starter $2, paid once 10 minutes · $0.20/minute · credits never expire · full API access Read 7 Oct 2026 · stemsplit.io
Standard $5, paid once 30 minutes · $0.17/minute · credits never expire · full API access Read 7 Oct 2026 · stemsplit.io
Pro $12, paid once 100 minutes · $0.12/minute · credits never expire · full API access Read 7 Oct 2026 · stemsplit.io
Studio $30, paid once 300 minutes · $0.10/minute · credits never expire · full API access Read 7 Oct 2026 · stemsplit.io

Every StemSplit plan and price →

Strong points and limits

Strong points

  • Separates vocals, instruments, drums, bass, guitar, and piano
  • Accepts YouTube and SoundCloud URLs
  • Batch processing and three export formats
  • Credits never expire
  • Free plan and free trial available

Limits

  • Uploads are limited to 100 MB
  • Original uploaded audio is deleted within 48 hours
  • Processed uploads remain downloadable for 14 days
  • Six-stem mode is separate from four-stem mode

Who it suits

It suits producers, DJs, karaoke users, creators, podcasters, audio editors, educators, students, and developers. The API and listed integrations also support automation workflows.

Verdict

StemSplit offers multiple input methods, stem modes, exports, and automation access at one-time credit prices. Its file-size limit and stated retention periods are important considerations for larger or longer-running workflows.

Where Specifiction places it

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