# Kokoro TTS (French) API

> Chuyển văn bản tiếng Pháp thành giọng nói, hỗ trợ tiếng Pháp châu Âu và Canada, với tốc độ điều chỉnh được

Chuyển văn bản tiếng Pháp được cung cấp trong `prompt` thành âm thanh lời nói, dành cho cả tiếng Pháp châu Âu và Canada. ID `voice` bắt buộc chọn người nói, còn `speed` có thể đặt từ 0.1 đến 5 với mặc định là 1. Dùng cho thuyết minh, lời nhắc bằng giọng nói hoặc tính năng đọc văn bản trong ứng dụng bằng tiếng Pháp. Đầu ra là một đối tượng âm thanh.

- Model id: `kokoro/french`
- Made by: Hexgrad
- Category: Text to Speech
- Output: audio
- Price: $0.02 / 1000 characters (cheapest run $0.02 (20 API credits))
- Run: `POST https://api.doitong.com/v1/run/kokoro/french`
- Quote: `POST https://api.doitong.com/v1/quote/kokoro/french`
- Docs page: https://doitong.com/vi/developers/models/kokoro/french

## Pricing

Price: **$0.02 / 1000 characters**. Billed per character of `prompt` (the price is per 1000 characters).

The full example input below costs $0.001 = 1 API credit (50 characters × 20 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/kokoro/french` 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 |
|---|---|---|---|---|---|---|
| `prompt` |  | string | yes |  |  |  |
| `voice` |  | string | yes |  |  | Mã định danh chọn giọng nói cần dùng. |
| `speed` |  | number | no | `1` | 0.1 – 5 | Tốc độ âm thanh được tạo, với giá trị mặc định là 1.0. |
| `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
{
  "prompt": "Hello from Doitong. This is a short test sentence.",
  "voice": "ff_siwis"
}
```

A fuller example:

```json
{
  "prompt": "Hello from Doitong. This is a short test sentence.",
  "voice": "ff_siwis"
}
```

## 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/kokoro/french?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "Hello from Doitong. This is a short test sentence.",
    "voice": "ff_siwis"
  }'

# 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/kokoro/french?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "Hello from Doitong. This is a short test sentence.",
    "voice": "ff_siwis"
  }),
});
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 = {
    "prompt": "Hello from Doitong. This is a short test sentence.",
    "voice": "ff_siwis",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/kokoro/french", 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": "kokoro/french",
      "input": {
        "prompt": "Hello from Doitong. This is a short test sentence.",
        "voice": "ff_siwis"
      },
      "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": "kokoro/french",
  "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": {
    "prompt": "Hello from Doitong. This is a short test sentence.",
    "voice": "ff_siwis"
  },
  "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} | Nhạc do mô hình tạo ra. |

## Related models

- [Kokoro TTS](https://doitong.com/developers/models/kokoro/american-english.md) (`kokoro/american-english`): $0.02 / 1000 characters
- [Kokoro TTS (Brazilian Portuguese)](https://doitong.com/developers/models/kokoro/brazilian-portuguese.md) (`kokoro/brazilian-portuguese`): $0.02 / 1000 characters
- [Kokoro TTS (British English)](https://doitong.com/developers/models/kokoro/british-english.md) (`kokoro/british-english`): $0.02 / 1000 characters
- [Kokoro TTS (Hindi)](https://doitong.com/developers/models/kokoro/hindi.md) (`kokoro/hindi`): $0.02 / 1000 characters
- [Kokoro TTS (Italian)](https://doitong.com/developers/models/kokoro/italian.md) (`kokoro/italian`): $0.02 / 1000 characters
- [Kokoro TTS (Japanese)](https://doitong.com/developers/models/kokoro/japanese.md) (`kokoro/japanese`): $0.02 / 1000 characters
- [Kokoro TTS (Mandarin Chinese)](https://doitong.com/developers/models/kokoro/mandarin-chinese.md) (`kokoro/mandarin-chinese`): $0.02 / 1000 characters
- [Kokoro TTS (Spanish)](https://doitong.com/developers/models/kokoro/spanish.md) (`kokoro/spanish`): $0.02 / 1000 characters

## Links

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