# XTTS

XTTS is a Voice generation model that lets you clone voices into different languages by using just a quick 6-second audio clip.

## API Information

- **Model Slug:** xtts-v2
- **Branded URL:** https://www.eachlabs.ai/coqui/xtts/xtts-v2
- **Provider:** Coqui
- **Category:** Voice to Voice
- **Output Type:** audio
- **Status:** active
- **Version:** 0.0.1
- **Base Cost:** Per-second pricing based on provider predict_time. Rate: $0.00154/sec from GPU tier.
- **Estimated Processing Time:** 20 seconds
- **Last Updated:** 2026-04-06
- **Interactive Demo:** https://www.eachlabs.ai/ai-models/xtts-v2

## Pricing

- **Charge Type:** dynamic
- **Pricing Details:** Per-second pricing based on provider predict_time. Rate: $0.00154/sec from GPU tier.

### Pricing Rules

| Condition | Pricing |
| --- | --- |
| Rule 1 | Per-second pricing based on provider predict_time. Rate: $0.00154/sec from GPU tier. |

## Input Schema

| Parameter | Type | Required | Default | Constraints | Description |
|-----------|------|----------|---------|-------------|-------------|
| text | string | No | Hello, you are now at Eachlabs AI. If you need any support, just contact us. | - | This is the written input that you want to be converted into spoken words. |
| speaker | string | Yes | - | audio/mp3, audio/wav | This determines the specific voice or persona that will speak the provided text. |
| language | string | No | en | en,es,fr,de,it,pt,pl,tr,ru,nl,cs,ar,zh,hu,ko,hi | This refers to the choice of language for the text-to-speech synthesis. |
| cleanup_voice | boolean | No | true | - | This option helps in refining and improving the quality of the generated speech. |

## Example Request

```bash
curl -X POST https://api.eachlabs.ai/v1/prediction/ \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "xtts-v2",
  "input": {
    "speaker": "https://storage.googleapis.com/magicpoint/inputs/voice-translate.input.mp3"
  }
}'
```

## Output Schema

Response returned by `GET /v1/prediction/{id}` when the job completes:

```json
{
  "status": "success",
  "predictionID": "string",
  "output": "string (URL of generated audio)",
  "metrics": {
    "predict_time": "number (seconds)"
  }
}
```

## Polling

```bash
curl https://api.eachlabs.ai/v1/prediction/{PREDICTION_ID} \
  -H "X-API-Key: YOUR_API_KEY"
```

| Status | Meaning |
|--------|---------|
| `processing` | Still running — poll again |
| `success` | Done — read `output` |
| `error` | Failed — read `message` / `details` |

## Webhook (alternative to polling)

Pass `"webhook_url": "https://your.host/path"` in the create request. Eachlabs POSTs this payload when the job ends:

```json
{
  "exec_id": "prediction-uuid",
  "status": "succeeded",
  "output": "https://...",
  "error": ""
}
```

`status` is `"succeeded"` or `"failed"`. `exec_id` equals the `predictionID` from create. Return 2xx within 30 seconds.

## Errors

Error body: `{ "status": "error", "message": "...", "details": "..." }`

| Code | Meaning |
|------|---------|
| `400` | Invalid input |
| `401` | Missing / invalid `X-API-Key` |
| `404` | Unknown model or prediction id |
| `429` | Rate limit — 100 creates / min, 10 concurrent per key |
| `5xx` | Retry with backoff |

## Overview

**xtts-v2 — Voice-to-Voice AI Model**

xtts-v2, developed by Coqui as part of the XTTS family, is a voice-to-voice AI model that clones voices into different languages using just a 6-second audio clip, enabling high-quality multilingual speech synthesis without extensive training data.

This zero-shot voice cloning capability sets xtts-v2 apart in the Coqui voice-to-voice landscape, supporting 17 languages like English, Spanish, Hindi, Dutch, and Russian for seamless cross-language transfer.

Ideal for developers seeking **xtts-v2 API** integration or creators exploring **voice-to-voice AI models**, it delivers expressive output with emotion and style preservation, making it a go-to for efficient audio production.

## Usage Notes

- API Base URL: `https://api.eachlabs.ai/v1`
- Authentication: send `X-API-Key: YOUR_API_KEY`. Generate a key from the Eachlabs dashboard at https://www.eachlabs.ai/dashboard/api-keys.
- File-typed parameters (`*_url`, `image_url`, `video_url`, `audio_url`, etc.) accept publicly-reachable HTTPS URLs only. Upload your asset first (GCS / S3 / your CDN) and pass the resulting URL. Data-URIs and localhost URLs are rejected.
- For structured parameters (arrays / objects) send real JSON values, not stringified payloads.
- Monetary values are reported in USD; per-token / per-megapixel rates may be billed in micro-cents internally.
- Prefer `webhook_url` over polling for long-running predictions — see the Webhook Callback section.