elevenlabs/voice-changer
Voice Changer by ElevenLabs - advanced AI model for audio-to-audio. Delivers high-quality results with fast inference, suitable for both creative and production workflows.
Example output — click Run to generate your own
Send your first request
OpenAI-compatible endpoint with unified authentication and usage tracking.
https://api.sandbase.ai/v1/runelevenlabs/voice-changerInput Schema
3 parameters · 0 required · 3 optional
| Parameter | Type | Required | Description |
|---|---|---|---|
audio | string | Optional | The input audio file |
voice | string | Optional | The voice to use for speech generation · Default: "Rachel" |
remove_background_noise | boolean | Optional | If set, will remove the background noise from your audio input using our audio isolation model. · Default: false |
Output Schema
| Field | Type | Description |
|---|---|---|
id | string | Unique identifier for the generation task |
status | string | Task status: pending, running, completed, failed, timeout |
model | string | Model used for the generation |
outputs | array | Array of output items |
outputs[].url | string | URL of the generated artifact |
outputs[].content_type | string | MIME type (e.g. image/png, video/mp4) |
error | object | null | Error details if failed, null on success |
error.type | string | Machine-readable error type code |
error.message | string | Human-readable error description |
Async Workflow
This model uses asynchronous execution. Submit a request and poll for the result.
- Submit — POST to /v1/run, receive an
id - Poll — GET /v1/run/{id} until status is
completed,failed, ortimeout - Retrieve — Read
outputsfrom the completed response
Code Examples
Ready-to-run snippets
# Step 1: Submit
curl -X POST https://api.sandbase.ai/v1/run \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "elevenlabs/voice-changer",
"audio": "https://static.sandbase.ai/examples/elevenlabs/voice-changer/input_audio_0.mp3",
"voice": "Aria",
"remove_background_noise": false,
"prompt": "a beautiful sunset over mountains"
}'
# Step 2: Poll result (replace <id>)
curl https://api.sandbase.ai/v1/run/<id> \
-H "Authorization: Bearer YOUR_API_KEY"API README
ElevenLabs Voice Changer
elevenlabs/voice-changer transforms an existing spoken performance into a selected target voice while retaining the original timing, emotion, inflection, and delivery. Because the source recording supplies the acting, Voice Changer can preserve expressive nuance that is difficult to recreate by converting a transcript back into speech. This combination makes the model a practical choice when the creative outcome depends on those qualities rather than on a generic media conversion.
For production work, Optional background-noise removal helps prepare imperfect recordings before conversion, making the workflow valuable for character replacement, localization, privacy, and consistent voice identity across captured performances. The result is most reliable when the source material and creative brief clearly describe the intended subject, progression, visual or sonic character, and the qualities that must remain unchanged.
Highlights
Performance preservation retains the source speaker's timing, emotion, and inflection.
Target-voice conversion changes vocal identity without rewriting the spoken delivery.
Expressive nuance transfer carries acting choices from the original recording.
Noise-aware conversion can clean background interference before changing the voice.
Pricing
| Source audio length | Price |
|---|---|
| Per minute | $0.300 |
When to Use
| ✅ Good fit | ❌ Consider alternatives |
|---|---|
| The model's named workflow matches the source material and intended output | A different input modality or model route is required |
| A managed asynchronous result is suitable for the production pipeline | A synchronous, interactive editor is essential |
| The documented controls cover the required duration, framing, or format | The project needs controls outside this endpoint's schema |
| Creative iteration benefits from a repeatable request structure | Exact deterministic pixels, frames, geometry, or samples are mandatory |
| A finished downloadable media asset is the desired deliverable | Editable source layers or a native project file are required |
Prompt Guide
For audio transformation, state the intended result first, then add the subject or source treatment, progression, style, and delivery constraints. Keep one creative variable per phrase, use the documented field names for controls, and change one setting at a time when comparing results.
{
"audio": "https://static.sandbase.ai/examples/elevenlabs/voice-changer/input_audio_0.mp3"
}
Technical Specs
| Spec | Value |
|---|---|
| Model ID | elevenlabs/voice-changer |
| Inputs | audio, remove_background_noise, voice |
| Required inputs | None |
| Output fields | content_type, url |
| Execution | Async (submit, then poll for result) |