# Eleven v4 Text to Speech API

> ElevenLabs-i ᡳᠯᡥᠠᠮᡝ ᡳᠯᠠᠨ ᡥᡡᠯᠠᠨ ᡳ ᡥᠠᠨᠵᡳ ᡥᡡᠯᠠᠮᠪᡳᠨᡳ ᠮᠣᠳᡝᠯ᠂ ᡳᠨᡝᠨᡝ ᠠᠪᠠᡵᡳ ᡩᡝ ᡥᡡᠯᠠᠨ ᡳ ᡥᡝᠯᡳ ᠪᡝ ᡩᡝᠯᡝᠮᠪᡳ ᡥᡡᠯᠠᠮᡝ ᠵᠠᡵᡤᠠᠨ ᠵᡝᠨ ᠠᠨᡳᠶᠠᠨᠠᠮᠪᡳ.

Eleven v4 ᡳᠨᡝᠨᡝ ᡥᡡᠯᠠᠮᡝ ᠵᠠᡵᡤᠠᠨᡳ ᠪᠠᡳᡨᠠᠯᠠᠮᠪᡳ ᡝᠯᡝᠮᡝ ᡥᡡᠯᠠᠨ ᡳ ᡥᡝᠯᡳ ᠪᡝ ᠠᠮᠠᠯᠠ ᠪᡝᠯᡝᠮᠪᡳ᠂ ᡝᠮᡳᠯᡝᠨ ᡳ ᡥᡡᠯᠠᠨ ᠠᠪᠠᡵᡳ ᡩᡝ ᠵᠠᡵᡤᠠᠨ ᠠᠨᡳᠶᠠᠨᠠᠮᠪᡳ᠂ ᠮᡝᠨᡳ [excited] ᠶᠠᠯᡤᠠᠨ ᠠᠪᠠᡵᡳ ᡩᡝ [whispering] ᡥᠠᠴᡳᠨ ᡳᠨᡝᠨᡝ ᡩᠠᠮᡠ ᡳᠴᡝ ᠠᠨᡳᠶᠠᠨᠠᠮᠪᡳ᠂ ᡝᠮᡠ ᠸᠠᡶᡳ ᠸᠠᠯᡳᠶᠠᠨ ᡳ ᠪᡳᠴᡳᠪᡝ ᡩᠠᠮᡠ ᡳᠨᡝᠨᡝ ᠪᠠᡳᡨᠠᠯᠠᠮᠪᡳ. ᠰᡳᠯᡤᠠᠮᠪᡳ ᡥᡡᠯᠠᠨ᠂ ᠵᠠᠯᡤᠠᠨ ᠪᡝ ᠵᠠᠰᠠᠮᠪᡳ᠂ ᡥᡡᠯᠠᠨ ᡳ ᡩᠠᠮᡠ ᡳᠯᡳᠮᡝ ᡩᡝ ᠵᠠᠪᠰᡳᠨ ᠪᡝ ᠠᠮᠪᠠᠨᠠᠮᠪᡳ᠂ ᠵᡠᠸᡝ MP3, PCM, Opus ᡥᠠᠮᡳ ᡥᡡᠯᠠᠨ ᡳ ᠵᠠᡵᡤᠠᠨ ᠪᡝ ᠠᠰᡳᠯᠠᠮᠪᡳ.

- Model id: `elevenlabs/tts/eleven-v4`
- Made by: ElevenLabs
- Category: Text to Speech
- Output: audio
- Price: $0.08 / 1000 characters (cheapest run $0.08 (80 API credits))
- Run: `POST https://api.doitong.ru/v1/run/elevenlabs/tts/eleven-v4`
- Quote: `POST https://api.doitong.ru/v1/quote/elevenlabs/tts/eleven-v4`
- Docs page: https://doitong.com/mnc/developers/models/elevenlabs/tts/eleven-v4

## Pricing

Price: **$0.08 / 1000 characters**. Billed per character of `text` (the price is per 1000 characters).

The full example input below costs $0.004 = 4 API credits (48 characters × 80 API credits / 1000 characters).

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). `POST https://api.doitong.ru/v1/quote/elevenlabs/tts/eleven-v4` with the same JSON body returns the exact price for that input; the quote is exactly what a run charges. Invalid input is never charged and failed or canceled requests are refunded automatically.

## Input parameters

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `text` |  | string | yes |  | 1 – 5000 characters | ᡥᡡᠯᠠᠨ ᡳ ᡤᡳᠰᡠᠨ ᠪᡝ ᠪᡠᠮᡝ᠂ [whispering] ᠠᠪᡠ IPA ᠵᡠᠯᡝᠯᡝᠮᡝ ᡩᠣᡵᡥᠣᠨ ᡳ ᠵᡠᡵᡤᠠᠨ ᡩᡝ ᠵᠠᠯᡳᠨ᠉ |
| `voice` |  | string | no | `Rachel` |  | ᡤᡳᠰᡠᠨ ᠵᡠᠴᡝᠨ ᠪᡠᠶᡝᠮᡝ ᡳ ᠵᡠᠴᡝᠨ᠉ |
| `stability` |  | number | no | `0.5` | 0 – 1 | ᠸᠠᠵᡳᠮᠪᡠᠨ ᡳ ᠪᡝᠶᡝᠨᡝᠮᡝ ᠠᠮᠠᠯᠠᠮᡝ ᠪᠠ ᠵᡠᠯᡝᠯᡝᠮᡝ ᠪᡠᠮᡝ ᠵᡠᠯᡝᠯᡝᠮᡝ᠉ |
| `similarity_boost` |  | number | no | `0.75` | 0 – 1 | ᠪᡳᠰᡳᡵᡝ ᠸᠠᠵᡳᠮᠪᡠᠨ ᡳ ᠰᡳᠯᡤᠠᠨ ᠪᡠᠶᡝᠮᡝ ᠵᡠᠯᡝᠯᡝᠮᡝ᠂ ᠣᠯᠣᡥᠣᠨ ᠪᡝ ᠵᡠᠯᡝᠯᡝᠮᡝ ᠮᡝᡳᡵᡝᠨ ᠵᡠᠯᡝᠯᡝᠮᡝ᠉ |
| `seed` |  | integer \| null | no |  | 0 – 4,294,967,295 | ᠵᡠᠯᡝᠯᡝᠮᡝ ᠵᡠᠯᡝᠯᡝᠮᡝ ᠪᡠᠶᡝᠮᡝ ᠣᠮᡝᡵᡳ ᠰᡳᠯᡤᠠᠨ ᠪᡝ ᠵᡠᠯᡝᠯᡝᠮᡝ᠉ |
| `language_code` |  | string \| null | no |  |  | ᡝᡵᡝᠮᡝ ᠪᡠᠶᡝᠮᡝ ᠰᡳᠨᡩᠠᡵᡳ ᡥᡝᡵᡤᡝᠨ ᠮᡝᠨᡳ ᡥᡡᠯᠠᠨ ᠪᡝ ᠵᠠᠯᡳᠨ ᡝᡵᡝᠮᡝ ᠪᡠᠮᡝ᠈ ᡩᠠᠰᠠᠮᡝ ᠪᡳᠰᡳᡵᡝ ᠵᠠᠯᡳᠨ ᡩᡝ ᡥᡡᠯᠠᠮᡝ᠉ |
| `output_format` |  | enum (string) | no | `mp3_44100_128` | `mp3_22050_32`, `mp3_44100_32`, `mp3_44100_64`, `mp3_44100_96`, `mp3_44100_128`, `mp3_44100_192`, `pcm_8000`, `pcm_16000`, `pcm_22050`, `pcm_24000`, `pcm_44100`, `pcm_48000`, `ulaw_8000`, `alaw_8000`, `opus_48000_32`, `opus_48000_64`, `opus_48000_96`, `opus_48000_128`, `opus_48000_192` | ᠪᡠᠶᡝᠮᡝ ᠣᠮᠪᡠᠯᡝᡥᡝ ᡤᡳᠰᡠᠨ ᡳ ᠶᠠᠯᡠ `codec_sample_rate_bitrate` ᡳ ᠵᡠᠯᡝᠯᡝᠮᡝ᠉ |
| `apply_text_normalization` |  | enum (string) | no | `auto` | `auto`, `on`, `off` | ᡵᠠᠰᡳᠨ ᡤᡝᠯᡳ ᠵᠠᠯᡳᠨ ᠠᡵᠠᡵᠠ ᡩᡝ ᠵᠠᠰᡳᠮᡝ ᡩᠠᠰᠠᠮᡝ ᠪᡳᠰᡳᡵᡝ ᡩᡠᠮᠪᡠᠨ ᠪᡝ ᠵᠠᡴᡠᠨᠠᠮᡝ᠉ |
| `timestamps` |  | boolean | no | `false` |  | ᠪᡠᠶᡝᠮᡝ ᡤᡳᠰᡠᠨ ᡩᡝ ᡝᡵᡝᠮᡝ ᠵᡠᠯᡝ ᡶᡳᠯᡝᠮᡝ ᡩᠠᠰᠠᠮᡝ ᡤᡳᠰᡠᠨ ᡩᡝ ᠵᠠᡴᡠᠨ ᠪᡝ ᡵᠠᡴᡳᠮᡝ ᠪᡳᠰᡳᡵᡝ ᠰᠠᠨᠠᠮᡝ᠉ |

## Example input

Required parameters only:

```json
{
  "text": "[excited] Hello! Welcome to the future of voice."
}
```

A fuller example:

```json
{
  "text": "[excited] Hello! Welcome to the future of voice.",
  "voice": "Aria"
}
```

## Run it

Set `DOITONG_API_KEY` to a key from https://doitong.com/developers/dashboard#keys. `?wait=20` returns the finished request in the same call when it is ready within 20 seconds; otherwise poll `GET /requests/{id}` (it also accepts `?wait=`), or pass `webhook_url`.

### curl

```bash
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.ru/v1/run/elevenlabs/tts/eleven-v4?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "[excited] Hello! Welcome to the future of voice.",
    "voice": "Aria"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.ru/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"
```

### JavaScript

```javascript
const API = "https://api.doitong.ru/v1";
const headers = {
  "Authorization": "Bearer " + process.env.DOITONG_API_KEY,
  "Content-Type": "application/json",
};

// Run the model; wait up to 20 s for the finished result in the same call
let res = await fetch(API + "/run/elevenlabs/tts/eleven-v4?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "text": "[excited] Hello! Welcome to the future of voice.",
    "voice": "Aria"
  }),
});
let request = await res.json();
if (!res.ok) throw new Error(request.error.code + ": " + request.error.message);

// Not finished yet: long-poll until it is
while (request.status === "queued" || request.status === "running") {
  res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers });
  request = await res.json();
}
if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error));
console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")");
```

### Python

```python
import os
import requests

API = "https://api.doitong.ru/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "text": "[excited] Hello! Welcome to the future of voice.",
    "voice": "Aria",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/elevenlabs/tts/eleven-v4", params={"wait": 20}, json=payload, headers=headers)
request = r.json()
if not r.ok:
    raise RuntimeError(request["error"]["code"] + ": " + request["error"]["message"])

# Not finished yet: long-poll until it is
while request["status"] in ("queued", "running"):
    request = requests.get(API + "/requests/" + request["id"], params={"wait": 20}, headers=headers).json()
if request["status"] != "succeeded":
    raise RuntimeError(request["error"])
print([o["url"] for o in request["outputs"]], request["cost"]["credits"], "API credits", "$" + request["cost"]["usd"])
```

### MCP

The MCP server at `https://api.doitong.ru/v1/mcp` exposes the tools `search_models`, `get_model`, `quote`, `run`, `get_request`, `cancel_request`, `list_requests`, `create_upload` and `get_account`. A `run` call for this model:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run",
    "arguments": {
      "model_id": "elevenlabs/tts/eleven-v4",
      "input": {
        "text": "[excited] Hello! Welcome to the future of voice.",
        "voice": "Aria"
      },
      "wait_seconds": 20
    }
  }
}
```

## Response

Every call returns a request object. `status` is one of `queued`, `running`, `succeeded`, `failed`, `canceled`. `outputs` lists the generated files with URLs on our storage (kept forever, or 7 days with `?storage=temporary`; `storage` says which); `output` is the model's own result object with the same URLs.

```json
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "elevenlabs/tts/eleven-v4",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 4,
    "usd": "0.004",
    "charged": 4,
    "refunded": 0
  },
  "input": {
    "text": "[excited] Hello! Welcome to the future of voice.",
    "voice": "Aria"
  },
  "output": {
    "audio": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp3",
      "content_type": "audio/mpeg",
      "file_name": "0-output.mp3",
      "file_size": 1843200
    },
    "timestamps": []
  },
  "outputs": [
    {
      "type": "audio",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp3",
      "content_type": "audio/mpeg",
      "file_size": 1843200,
      "duration": 12,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `audio` | object {url, content_type, file_name, file_size} | ᠪᡠᠶᡝᠮᡝ ᠪᡠᠶᡝᠮᡝ ᡳ ᡤᡳᠰᡠᠨ ᡶᡳᠯᡝ᠉ |
| `timestamps` | array of any \| null | ᠪᡠᠶᡝᠮᡝ ᡤᡳᠰᡠᠨ ᡳ ᠵᠠᠯᠠᠨ ᠮᡝᡥᡝ᠂ `timestamps` True ᠪᡳᠮᡝ ᠮᡠᡥᠠ ᡤᡳᠰᡠᠨ ᡳ ᠵᠠᠯᠠᠨ ᠪᡳ᠉ |

## Related models

- [Eleven v4 Turbo](https://doitong.com/developers/models/elevenlabs/tts/eleven-v4-turbo.md) (`elevenlabs/tts/eleven-v4-turbo`): $0.04 / 1000 characters
- [Elevenlabs Tts Eleven V3](https://doitong.com/developers/models/elevenlabs/tts/eleven-v3.md) (`elevenlabs/tts/eleven-v3`): $0.10 / 1000 characters
- [MiniMax Speech 2.8 HD](https://doitong.com/developers/models/minimax/speech-2.8-hd.md) (`minimax/speech-2.8-hd`): $0.10 / 1000 characters
- [Elevenlabs](https://doitong.com/developers/models/elevenlabs/text-to-dialogue/eleven-v3.md) (`elevenlabs/text-to-dialogue/eleven-v3`): $0.10 / run
- [ElevenLabs TTS Multilingual v2](https://doitong.com/developers/models/elevenlabs/tts/multilingual-v2.md) (`elevenlabs/tts/multilingual-v2`): $0.10 / 1000 characters
- [ElevenLabs TTS Turbo v2.5](https://doitong.com/developers/models/elevenlabs/tts/turbo-v2.5.md) (`elevenlabs/tts/turbo-v2.5`): $0.05 / 1000 characters
- [Async Text to Speech Pro V1.0](https://doitong.com/developers/models/async/tts-pro/v1.0.md) (`async/tts-pro/v1.0`): $0.01 / 1000 characters
- [Bytedance Seed Speech Text to Speech](https://doitong.com/developers/models/bytedance/seed-speech/tts/v2.md) (`bytedance/seed-speech/tts/v2`): $0.03 / 1000 characters

## Links

- HTML page: https://doitong.com/developers/models/elevenlabs/tts/eleven-v4
- All models and guides for AI agents: https://doitong.com/developers/llms.txt
- OpenAPI 3.1 with this model's typed request body: https://doitong.com/developers/openapi.json?model=elevenlabs/tts/eleven-v4
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/elevenlabs/tts/eleven-v4