AI Stem Splitter API

Spec sheet

What it does

AI Stem Splitter is a browser service that separates uploaded music into downloadable stems.Read 15 Oct 2026 · aistemsplitter.org

Intended users

The homepage presents the tool for producers, DJs, vocalists, and karaoke fans.Read 8 Oct 2026 · aistemsplitter.org

API

The REST API supports direct URLs or uploads, job-status polling, and signed webhooks.Read 8 Oct 2026 · aistemsplitter.org

Security

The API supports HMAC-SHA256 signed webhooks, and the privacy policy says it uses measures to protect personal information from unauthorized access, alteration, disclosure, or destruction.Read 8 Oct 2026 · aistemsplitter.org

Support

The site links to Discord and email for contact, and the API documentation links to contact support.Read 8 Oct 2026 · aistemsplitter.org

API authentication and credits

API requests use bearer API keys, and one credit represents one second of source audio.Read 15 Oct 2026 · aistemsplitter.org

API errors

Documented errors include unauthorized, insufficient credits, validation, rate limiting and server errors with HTTP codes 401, 402, 422, 429 and 500.Read 15 Oct 2026 · aistemsplitter.org

API input and status flow

The API supports direct URLs or presigned uploads, then exposes queued, processing, succeeded and failed job states.Read 15 Oct 2026 · aistemsplitter.org

Audio length limit

The homepage lists 20 minutes as the longest supported track.Read 8 Oct 2026 · aistemsplitter.org

Audio model

The site says its separation uses htdemucs, with guitar and piano provided by the htdemucs_6s model.Read 8 Oct 2026 · aistemsplitter.org

Billing unit

Billing deducts the exact duration of submitted audio, measured down to the second.Read 15 Oct 2026 · aistemsplitter.org

BPM and key detection

Uploads receive automatic tempo and musical-key analysis.Read 15 Oct 2026 · aistemsplitter.org

Credit expiry

Both free and purchased minutes remain available until consumed and do not expire.Read 15 Oct 2026 · aistemsplitter.org

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.Read 8 Oct 2026 · aistemsplitter.org

DJ export

DJ mode provides beat grids, Camelot notation and Rekordbox XML export.Read 15 Oct 2026 · aistemsplitter.org

DJ features

DJ mode offers beat grids, Camelot notation, and Rekordbox XML export.Read 8 Oct 2026 · aistemsplitter.org

Download formats

Separated stems can be downloaded as WAV, MP3 or FLAC files.Read 15 Oct 2026 · aistemsplitter.org

Exports and preview

Users can preview stems in a browser waveform player and download WAV, MP3, or FLAC files.Read 8 Oct 2026 · aistemsplitter.org

Failed-job refunds

The service pre-charges a submission and automatically refunds the same amount when processing fails.Read 15 Oct 2026 · aistemsplitter.org

Formats and size

The upload form lists MP3, WAV, FLAC, M4A, AAC, OGG, and WEBM, with a 50 MB maximum.Read 8 Oct 2026 · aistemsplitter.org

Input formats and size

The homepage accepts MP3, WAV, FLAC, M4A, AAC, OGG and WEBM files up to 50 MB.Read 15 Oct 2026 · aistemsplitter.org

Limit: Cyrillic filenames

A forum participant said files whose names use Cyrillic characters failed to upload.Read 15 Oct 2026 · rmmedia.ru

Limit: pricing criticism

One forum reply accused the service of charging for software the commenter believed was freely available and called that deceptive.Read 15 Oct 2026 · rmmedia.ru

Limit: regional access

A forum participant reported that the site was inaccessible from their region.Read 15 Oct 2026 · rmmedia.ru

Limit: reported glitches

The same discussion includes a user who said uploads sometimes produced errors and described the site as buggy.Read 15 Oct 2026 · rmmedia.ru

Link processing

Users can submit YouTube or SoundCloud links for direct processing into stems.Read 8 Oct 2026 · aistemsplitter.org

n8n capabilities

The verified n8n node offers Create Split, Get Credits and Get Split actions.Read 15 Oct 2026 · n8n.io

n8n integration reach

n8n says its AIStemSplitter integration can connect the service with more than 1,000 apps and services.Read 15 Oct 2026 · n8n.io

n8n setup requirement

n8n says an instance owner must install verified nodes before other users on that instance can use them.Read 15 Oct 2026 · n8n.io

Notable discussion date

The independent forum thread introducing the service began on April 29, 2026.Read 15 Oct 2026 · rmmedia.ru

Praise: browser access

A Russian music forum poster praised that basic use is free and works in a browser without installation for up to six-plus stems.Read 15 Oct 2026 · rmmedia.ru

Privacy collection

The privacy policy says the service may collect registration details, usage data and device information such as IP address, browser and operating system.Read 15 Oct 2026 · aistemsplitter.org

Privacy data

The privacy policy says collected information may include registration or contact details, website usage data, and device information such as IP address, browser, and operating system.Read 8 Oct 2026 · aistemsplitter.org

Processing speed

The homepage claims GPU processing can finish most songs in under 60 seconds.Read 15 Oct 2026 · aistemsplitter.org

Public API

A REST API is available at https://api.aistemsplitter.org/v1 for creating stem-split jobs.Read 15 Oct 2026 · aistemsplitter.org

SDK coverage

The maker lists first-party SDKs for Node.js, Python, Java/Kotlin, Go, PHP, Swift and Lua.Read 15 Oct 2026 · aistemsplitter.org

Self-hosting boundary

The SDKs are MIT-licensed, but inference runs on managed GPUs and no on-premise inference image is offered in version one.Read 15 Oct 2026 · aistemsplitter.org

Separation model

Its core separation uses Meta AI's htdemucs model, with htdemucs_6s used for guitar and piano.Read 15 Oct 2026 · aistemsplitter.org

Six stem outputs

The service can produce vocals, drums, bass, guitar, piano and other stems.Read 15 Oct 2026 · aistemsplitter.org

Stem separation

The service splits an audio track into vocals, drums, bass, guitar, piano, and other stems.Read 8 Oct 2026 · aistemsplitter.org

Terms content licence

Users retain submitted-content rights but grant the provider a worldwide, nonexclusive, royalty-free licence to use, reproduce, modify and distribute that content.Read 15 Oct 2026 · aistemsplitter.org

Terms warranty limit

The terms provide the service as-is and as-available and do not promise uninterrupted, secure or error-free operation.Read 15 Oct 2026 · aistemsplitter.org

Track length

The homepage lists 20 minutes as the longest supported track.Read 15 Oct 2026 · aistemsplitter.org

URL processing

YouTube and SoundCloud links can be processed directly without manually downloading the source.Read 15 Oct 2026 · aistemsplitter.org

Vocal tools

It can remove vocals to create karaoke instrumentals or isolate acapellas for remixing.Read 8 Oct 2026 · aistemsplitter.org

Waveform preview

Users can audition, mute, solo and scrub stems in a synchronized browser waveform player before downloading.Read 15 Oct 2026 · aistemsplitter.org

Webhook security

Completion webhooks use SHA-256 HMAC signatures with timestamp replay protection, and requests support Idempotency-Key retries.Read 15 Oct 2026 · aistemsplitter.org

Workflow integrations

The SDK page lists n8n, GitHub Actions, a Docker/GHCR CLI image and Pipedream integrations.Read 15 Oct 2026 · aistemsplitter.org

Plans and prices

Every AI Stem Splitter API plan and price →

Where Specifiction places it

• AI stem splitters#1 of 269.3