# Inworld TTS-1.5 Max API

> Chuyển văn bản thành giọng nói với danh mục lớn các giọng tiếng Anh và ngôn ngữ khác có tên, cùng nhiều tốc độ lấy mẫu

Chuyển tối đa 2000 ký tự trong `text` thành giọng nói. `voice` chọn trong 113 giọng có tên, mặc định là Craig (en). `sample_rate_hertz` có thể là 8000, 16000, 24000, 32000, 40000 hoặc 48000 (mặc định). Trả về một tệp âm thanh.

- Model id: `inworld-tts`
- Made by: Inworld
- Category: Text to Speech
- Output: audio
- Price: $0.01 / 1000 characters (cheapest run $0.01 (10 API credits))
- Run: `POST https://api.doitong.com/v1/run/inworld-tts`
- Quote: `POST https://api.doitong.com/v1/quote/inworld-tts`
- Docs page: https://doitong.com/vi/developers/models/inworld-tts

## Pricing

Price: **$0.01 / 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 × 10 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/inworld-tts` 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 |  | ≤ 2000 characters | Văn bản tổng hợp giọng nói, giới hạn ở 2000 ký tự. |
| `voice` |  | enum (string) | no | `Craig (en)` | `Loretta (en)`, `Darlene (en)`, `Marlene (en)`, `Hank (en)`, `Evelyn (en)`, `Celeste (en)`, `Pippa (en)`, `Tessa (en)`, `Liam (en)`, `Callum (en)`, `Hamish (en)`, `Abby (en)`, `Graham (en)`, `Rupert (en)`, `Mortimer (en)`, `Snik (en)`, `Anjali (en)`, `Saanvi (en)`, `Arjun (en)`, `Claire (en)`, `Oliver (en)`, `Simon (en)`, `Elliot (en)`, `James (en)`, `Serena (en)`, `Gareth (en)`, `Vinny (en)`, `Lauren (en)`, `Jessica (en)`, `Ethan (en)`, `Tyler (en)`, `Jason (en)`, `Chloe (en)`, `Veronica (en)`, `Victoria (en)`, `Miranda (en)`, `Sebastian (en)`, `Victor (en)`, `Malcolm (en)`, `Kayla (en)`, `Nate (en)`, `Jake (en)`, `Brian (en)`, `Amina (en)`, `Kelsey (en)`, `Derek (en)`, `Grant (en)`, `Evan (en)`, `Alex (en)`, `Ashley (en)`, `Craig (en)`, `Deborah (en)`, `Dennis (en)`, `Edward (en)`, `Elizabeth (en)`, `Hades (en)`, `Julia (en)`, `Pixie (en)`, `Mark (en)`, `Olivia (en)`, `Priya (en)`, `Ronald (en)`, `Sarah (en)`, `Shaun (en)`, `Theodore (en)`, `Timothy (en)`, `Wendy (en)`, `Dominus (en)`, `Hana (en)`, `Clive (en)`, `Carter (en)`, `Blake (en)`, `Luna (en)`, `Yichen (zh)`, `Xiaoyin (zh)`, `Xinyi (zh)`, `Jing (zh)`, `Erik (nl)`, `Katrien (nl)`, `Lennart (nl)`, `Lore (nl)`, `Alain (fr)`, `Hélène (fr)`, `Mathieu (fr)`, `Étienne (fr)`, `Johanna (de)`, `Josef (de)`, `Gianni (it)`, `Orietta (it)`, `Asuka (ja)`, `Satoshi (ja)`, `Hyunwoo (ko)`, `Minji (ko)`, `Seojun (ko)`, `Yoona (ko)`, `Szymon (pl)`, `Wojciech (pl)`, `Heitor (pt)`, `Maitê (pt)`, `Diego (es)`, `Lupita (es)`, `Miguel (es)`, `Rafael (es)`, `Svetlana (ru)`, `Elena (ru)`, `Dmitry (ru)`, `Nikolai (ru)`, `Riya (hi)`, `Manoj (hi)`, `Yael (he)`, `Oren (he)`, `Nour (ar)`, `Omar (ar)` | Giọng nói dùng để tổng hợp giọng nói. |
| `sample_rate_hertz` |  | enum (integer) | no | `48000` | `8000`, `16000`, `24000`, `32000`, `40000`, `48000` | Tần số lấy mẫu của âm thanh đầu ra, tính bằng Hz. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Có thể nới lỏng việc kiểm duyệt bằng cách đặt thành false, nếu người gọi được cấp quyền. |

## 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/inworld-tts?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/inworld-tts?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/inworld-tts", 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": "inworld-tts",
      "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": "inworld-tts",
  "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} | Tệp âm thanh được tạo từ quá trình tạo sinh. |

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