Freedom251 › AI Stem Splitters
AI Stem Splitter API
What AI Stem Splitter API is
AI Stem Splitter API separates tracks into vocals, drums, bass, guitar, piano, and other stems. You can upload audio or send a YouTube or SoundCloud link, then preview the results in a browser waveform player and download WAV, MP3, or FLAC files. The upload form accepts MP3, WAV, FLAC, M4A, AAC, OGG, and WEBM, with a 50 MB upload limit; the longest supported track is 20 minutes. Vocal tools can remove vocals for karaoke instrumentals or isolate acapellas for remixing. DJ mode adds beat grids, Camelot notation, and Rekordbox XML export. The site identifies htdemucs as its separation model, with htdemucs_6s used for guitar and piano. Its REST API accepts URLs or uploads and supports job-status polling and signed webhooks. A free trial provides 3 processing minutes without a credit card. Paid packs start at $6.99, paid once for 50 minutes; purchased minutes do not expire.
Who it suits
It suits producers, DJs, vocalists, and karaoke fans who need separated stems, vocal removal, or a programmatic API. Developers can use its listed SDKs and integration options, including Node.js, Python, Java, Go, PHP, Swift, Lua, n8n, GitHub Actions, Docker/CLI, and Pipedream.
What it does well
- Separates vocals, drums, bass, guitar, piano, and other stems
- Processes YouTube and SoundCloud links
- Preview stems in a browser waveform player
- DJ mode includes Rekordbox XML export
- Free trial includes 3 minutes without a credit card
What to know first
- Uploads are limited to 50 MB
- Tracks are limited to 20 minutes
- Free trial includes only 3 processing minutes
Limits
The free trial provides three processing minutes. Each uploaded track can be no longer than 20 minutes, and uploads can be at most 50 MB.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free trial — 3 mins | 3 minutes; no credit card required; free minutes stay until used · 3 minutes of processing | Free |
| Free trial | 3 processing minutes · no credit card · minutes never expire | Free |
| 150 minutes | 150 processing minutes · approximately 50 songs · credits never expire | $15, paid once |
| 150 mins | minute pack; purchased minutes never expire · 150 minutes · ≈ 50 songs | $15, paid once |
| 500 minutes | 500 processing minutes · approximately 166 songs · credits never expire | $39.99, paid once |
| 500 mins | minute pack; purchased minutes never expire · 500 minutes · ≈ 166 songs | $39.99, paid once |
| 50 mins | minute pack; purchased minutes never expire · 50 minutes · ≈ 16 songs | $6.99, paid once |
| 50 minutes | 50 processing minutes · approximately 16 songs · credits never expire | $6.99, paid once |
The first 8 of 9 plans, as aistemsplitter.org lists them, read 8 Oct 2026. The maker's own page has the final word. Every plan
Getting started
- Open the AI Stem Splitter website
- Choose web processing or the REST API
- Upload a supported audio file or submit a YouTube or SoundCloud link
- Preview the separated stems in the waveform player
- Download WAV, MP3, or FLAC files
- Use the free three-minute trial or purchase a minute pack
Verdict
AI Stem Splitter API combines stem separation and vocal tools with DJ features and an API for integrations. Its free trial is limited to three minutes, and paid minute packs begin at $6.99, paid once.
Questions
What does AI Stem Splitter API separate?
It separates vocals, drums, bass, guitar, piano, and other stems, with five or more outputs.
How much does it cost?
The free trial costs nothing for three processing minutes. Paid packs are $6.99, paid once for 50 minutes, $15, paid once for 150 minutes, or $39.99, paid once for 500 minutes.
Which file formats can I upload?
The upload form accepts MP3, WAV, FLAC, M4A, AAC, OGG, and WEBM files.
Does it provide an API?
Yes. The REST API accepts direct URLs or uploads, supports job-status polling, and offers signed webhooks.
Which platforms are supported?
The listed platforms are web and API.
Facts from AI Stem Splitter API's own pages
- API
- The REST API supports direct URLs or uploads, job-status polling, and signed webhooks. · aistemsplitter.org, 8 Oct 2026
- API authentication and credits
- API requests use bearer API keys, and one credit represents one second of source audio. · aistemsplitter.org, 15 Oct 2026
- API errors
- Documented errors include unauthorized, insufficient credits, validation, rate limiting and server errors with HTTP codes 401, 402, 422, 429 and 500. · aistemsplitter.org, 15 Oct 2026
- API input and status flow
- The API supports direct URLs or presigned uploads, then exposes queued, processing, succeeded and failed job states. · aistemsplitter.org, 15 Oct 2026
- Audio length limit
- The homepage lists 20 minutes as the longest supported track. · aistemsplitter.org, 8 Oct 2026
- Audio model
- The site says its separation uses htdemucs, with guitar and piano provided by the htdemucs_6s model. · aistemsplitter.org, 8 Oct 2026
- Billing unit
- Billing deducts the exact duration of submitted audio, measured down to the second. · aistemsplitter.org, 15 Oct 2026
- BPM and key detection
- Uploads receive automatic tempo and musical-key analysis. · aistemsplitter.org, 15 Oct 2026
- Credit expiry
- Both free and purchased minutes remain available until consumed and do not expire. · aistemsplitter.org, 15 Oct 2026
- Developer integrations
- The SDK page lists first-party SDKs for Node.js, Python, Java, Go, PHP, Swift, and Lua, plus n8n, GitHub Actions, Docker/CLI, and Pipedream options. · aistemsplitter.org, 8 Oct 2026
- DJ export
- DJ mode provides beat grids, Camelot notation and Rekordbox XML export. · aistemsplitter.org, 15 Oct 2026
- DJ features
- DJ mode offers beat grids, Camelot notation, and Rekordbox XML export. · aistemsplitter.org, 8 Oct 2026
- Download formats
- Separated stems can be downloaded as WAV, MP3 or FLAC files. · aistemsplitter.org, 15 Oct 2026
- Exports and preview
- Users can preview stems in a browser waveform player and download WAV, MP3, or FLAC files. · aistemsplitter.org, 8 Oct 2026
- Failed-job refunds
- The service pre-charges a submission and automatically refunds the same amount when processing fails. · aistemsplitter.org, 15 Oct 2026
- Formats and size
- The upload form lists MP3, WAV, FLAC, M4A, AAC, OGG, and WEBM, with a 50 MB maximum. · aistemsplitter.org, 8 Oct 2026
- Input formats and size
- The homepage accepts MP3, WAV, FLAC, M4A, AAC, OGG and WEBM files up to 50 MB. · aistemsplitter.org, 15 Oct 2026
- Intended users
- The homepage presents the tool for producers, DJs, vocalists, and karaoke fans. · aistemsplitter.org, 8 Oct 2026
- Limit: Cyrillic filenames
- A forum participant said files whose names use Cyrillic characters failed to upload. · rmmedia.ru, 15 Oct 2026
- Limit: pricing criticism
- One forum reply accused the service of charging for software the commenter believed was freely available and called that deceptive. · rmmedia.ru, 15 Oct 2026
- Limit: regional access
- A forum participant reported that the site was inaccessible from their region. · rmmedia.ru, 15 Oct 2026
- Limit: reported glitches
- The same discussion includes a user who said uploads sometimes produced errors and described the site as buggy. · rmmedia.ru, 15 Oct 2026
- Link processing
- Users can submit YouTube or SoundCloud links for direct processing into stems. · aistemsplitter.org, 8 Oct 2026
- n8n capabilities
- The verified n8n node offers Create Split, Get Credits and Get Split actions. · n8n.io, 15 Oct 2026
Where AI Stem Splitter API stands on Freedom251
- AI Stem Splitters#2 of 26