# xAI Text to Speech API

> ᡥᡡᠯᡠᠨ ᠵᡠᠰᡤᡠᠨ ᠪᡝ ᠵᡠᠰᡤᡠᠨ ᡩᡝ ᠠᠯᡤᡳᠮᡝ, ᠪᡝᠯᡝᡥᡝ ᠵᡠᠰᡤᡠᠨ ᡳᠨᡠ ᠵᡠᠰᡤᡠᠨ ᡳ ᡶᡳᠰᡳᠨ ᠵᡠᠰᡤᡠᠨ ᠪᡝ ᠠᠰᡠᠯᠠᠮᡝ

ᡥᡡᠯᠠᡥᠠ 15,000 ᡥᡡᠯᡝᡥᡝᠩᡤᡝ ᠪᡝ ᡤᡡᠯᡤᡝᠮᡝ ᡤᡝᠯᡵᡳ ᠠᡩᠠᠯᠠᠮᠪᡳ᠉ 28 ᠵᡠᠰᡳ ᡥᡡᠯᡝᡥᡝ ᡤᡝᠯᡵᡳ ᡤᡠᠯᡤᡝᠮᡝ ᡝᠮᡠ ᡤᡡᠯᡳ ᡥᡡᠯᡝᠨ ᡤᡡᠨᡳᠨ ᠪᡝ ᡥᡡᠯᠠᠮᡝ ᡩᡠᠯᡝᠮᡝ ᠠᠴᠠᠮᠪᡳ᠉ ᡝᡵᡝ ᡥᡡᠯᡝᡥᡝ ᠰᡳᠨᡩᠠᠨ ᠰᡝᡵᡤᡳᠶᡝ ᠵᡠᠰᡳ ᠰᡳᠨᡩᠠᠨ ᠰᡝᠮᡝ [laugh], [pause] ᠪᡝ [sigh] ᡝᠮᡳ ᠠᠴᠠᠮᠪᡳ᠉ <whisper> ᠮᠠᠩᡤᡳ <slow> ᠰᡳᠨᡩᠠᠨ ᠰᡝᠮᡝ ᠵᡠᠰᡳ ᠠᠴᠠᠮᠪᡳ᠉ `output_format` ᡤᡡᠯᡤᡝᠮᡝ ᠠᡩᠠᠯᠠᠮᡝ ᠠᡳᠰᡳ ᠪᡝ ᠵᠠᠯᠠᠨ ᠠᠴᠠᠮᠪᡳ᠉

- Model id: `xai/tts/v1`
- Made by: xAI
- Category: Text to Speech
- Output: audio
- Price: $0.015 / 1000 characters (cheapest run $0.015 (15 API credits))
- Run: `POST https://api.doitong.com/v1/run/xai/tts/v1`
- Quote: `POST https://api.doitong.com/v1/quote/xai/tts/v1`
- Docs page: https://doitong.com/mnc/developers/models/xai/tts/v1

## Pricing

Price: **$0.015 / 1000 characters**. Billed per character of `text` (the price is per 1000 characters).

The full example input below costs $0.001 = 1 API credit (50 characters × 15 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.com/v1/quote/xai/tts/v1` 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 – 15000 characters | ᡤᡳᠰᡠᠨ ᡳ ᠪᡠᠶᡝᠮᡝ ᡩᡝ ᡥᡡᠯᠠᠨ᠂ ᠵᡠᠯᡝ ᡳ ᠵᡠᠪᡝᠨ ᠪᡝ inline tags ([laugh], [pause], [sigh]) ᡶᡳ wrapping tags (<whisper>text</whisper>, <slow>text</slow>) ᠵᡝᠯᡝᠮᡝ ᠵᡠᠯᡝ ᡳ ᠮᡠᠰᡝ ᠪᡠᠶᡝᠮᡝ᠉ ᡝᡵᡝᠮᡝ ᠪᡠᠮᡝ 15,000 ᠵᡠᠪᡝᠨ ᡩᡝ ᠠᠰᡠᡵᡠ ᠪᡝ ᠠᠰᡠᡵᡠ ᠣᠮᠪᡳ᠉ |
| `voice` |  | enum (string) | no | `eve` | `carina`, `zagan`, `helix`, `orion`, `luna`, `iris`, `altair`, `zenith`, `perseus`, `helios`, `lux`, `kepler`, `rigel`, `cosmo`, `celeste`, `ursa`, `sirius`, `lumen`, `castor`, `naksh`, `atlas`, `aurora`, `liora`, `ara`, `eve`, `leo`, `rex`, `sal` | ᡤᡳᠰᡠᠨ ᡳ ᠵᡠᠯᡝ ᠪᡠᠶᡝᠮᡝ ᡩᡝ ᠰᡳᠯᡤᠠᠮᡝ ᠪᡝᠯᡝ ᡤᡳᠰᡠᠨ᠉ |
| `language` |  | enum (string) | no | `auto` | `auto`, `en`, `ar-EG`, `ar-SA`, `ar-AE`, `bn`, `zh`, `fr`, `de`, `hi`, `id`, `it`, `ja`, `ko`, `pt-BR`, `pt-PT`, `ru`, `es-MX`, `es-ES`, `tr`, `vi` | ᡝᡵᡝ BCP-47 ᠵᡠᠯᡝ ᡩᡝ ᠪᡳ: en, zh, fr, de, hi, id, it, ja, ko, pt-BR, pt-PT, ru, es-MX, es-ES, tr, vi, bn, ar-EG, ar-SA, ar-AE᠉ ᠵᡠᠯᡝ ᡳ ᠠᠪᡠᠯᠠᠮᡝ ᠵᠠᠯᡠᠮᡝ ᡩᡝ 'auto' ᠪᡝ ᠵᡠᠯᡝ ᠪᡠᠮᡝ᠉ |
| `output_format` |  | object {codec, sample_rate, bit_rate} | no |  |  | ᠪᡠᠶᡝᠮᡝ ᡳ ᡤᡳᠰᡠᠨ ᡳ ᠵᡠᠯᡝ ᡩᡝ ᠵᡠᠯᡝ ᡳ MP3᠂ 24 kHz ᠮᡠᠰᡝ ᠪᡝ 128 kbps ᠪᡳ᠉ |
| `output_format.codec` |  | enum (string) | no | `mp3` | `mp3`, `wav`, `pcm`, `mulaw`, `alaw` | ᡤᡳᠰᡠᠨ ᡳ ᠵᡠᠯᡝ ᡩᡝ ᠪᡳᠯᡝᠮᡝ ᡳ codec; ᠪᡳ: mp3, wav, pcm, mulaw, alaw᠉ |
| `output_format.sample_rate` |  | enum (integer) | no | `24000` | `8000`, `16000`, `22050`, `24000`, `44100`, `48000` | ᡤᡳᠰᡠᠨ ᡳ ᠵᡠᠯᡝ ᡳ ᠮᡠᠰᡝ᠂ Hz ᡩᡝ ᠵᠠᠯᡠᠮᡝ᠉ |
| `output_format.bit_rate` |  | enum (integer) \| null | no |  | `32000`, `64000`, `96000`, `128000`, `192000` | MP3 ᠪᡠᠶᡝᠮᡝ ᡳ ᠪᡳᡨᡥᡝ ᡳ ᠵᡠᠯᡝ᠂ ᠵᡠᠯᡝ ᡳ 128000 ᠪᡳ ᡩᡝ bps ᡩᡝ ᠵᠠᠯᡠᠮᡝ᠉ ᡝᠯᡝ ᠪᡳᠯᡝᠮᡝ ᡩᡝ ᠠᠮᠠᠰᡳ ᠪᡳᠯᡝᠮᡝ ᡩᡝ ᠠᠰᡠᡵᡠ ᠣᠮᠪᡳ᠉ |
| `enable_safety_checker` |  | boolean | no | `true` |  | ᠠᠰᡠᡵᠠᠮᡝ ᠠᠨᡩᠠ ᠪᡳᠮᡝ ᠰᠠᡳᠨ᠈ ᠵᡠᠴᡝᠨ ᠵᡠᠰᡝ ᠠᠰᡠᡵᠠᠮᡝ᠉ |

## Example input

Required parameters only:

```json
{
  "text": "Hello from Doitong. This is a short test sentence."
}
```

A fuller example:

```json
{
  "text": "Hello from Doitong. This is a short test sentence."
}
```

## 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.com/v1/run/xai/tts/v1?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "Hello from Doitong. This is a short test sentence."
  }'

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

### JavaScript

```javascript
const API = "https://api.doitong.com/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/xai/tts/v1?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "text": "Hello from Doitong. This is a short test sentence."
  }),
});
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.com/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "text": "Hello from Doitong. This is a short test sentence.",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/xai/tts/v1", 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.com/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": "xai/tts/v1",
      "input": {
        "text": "Hello from Doitong. This is a short test sentence."
      },
      "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": "xai/tts/v1",
  "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": 1,
    "usd": "0.001",
    "charged": 1,
    "refunded": 0
  },
  "input": {
    "text": "Hello from Doitong. This is a short test sentence."
  },
  "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
    }
  },
  "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.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `audio` | object {url, content_type, file_name, file_size} | ᠪᡠᠶᡝᠮᡝ ᠵᡠᡴᡴᠠᠨ ᡤᡳᠰᡠᠨ ᡳ ᡶᡳᠯᡝ᠉ |

## Related models

- [Eleven v4 Text to Speech](https://doitong.com/developers/models/elevenlabs/tts/eleven-v4.md) (`elevenlabs/tts/eleven-v4`): $0.08 / 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
- [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
- [Chatterbox · Speech to Speech](https://doitong.com/developers/models/chatterbox/speech-to-speech.md) (`chatterbox/speech-to-speech`): $0.015 / minute of input audio
- [Chatterbox · Text to Speech](https://doitong.com/developers/models/chatterbox/text-to-speech.md) (`chatterbox/text-to-speech`): $0.025 / 1000 characters
- [Chatterbox · Text to Speech · Multilingual](https://doitong.com/developers/models/chatterbox/text-to-speech/multilingual.md) (`chatterbox/text-to-speech/multilingual`): $0.025 / 1000 characters
- [Chatterboxhd · Speech to Speech](https://doitong.com/developers/models/resemble-ai/chatterboxhd/speech-to-speech.md) (`resemble-ai/chatterboxhd/speech-to-speech`): $0.02 / minute of input audio

## Links

- HTML page: https://doitong.com/developers/models/xai/tts/v1
- 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=xai/tts/v1
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.com/v1/models/xai/tts/v1