# Recraft V4.1 Text to Image API

> Mô hình ảnh định hướng thiết kế với bảng màu thương hiệu và khả năng điều khiển màu nền.

Recraft V4.1 được xây dựng cho công việc thiết kế: hình ảnh tiếp thị, hình minh họa và cảnh sản phẩm với bố cục rõ ràng. Truyền danh sách màu RGB mong muốn để duy trì bảng màu thương hiệu hoặc cố định màu nền cho các bộ ảnh nhất quán. Mỗi yêu cầu tạo một ảnh với kích thước đặt sẵn hoặc tùy chỉnh.

- Model id: `recraft/v4.1/text-to-image`
- Made by: Recraft
- Category: Text to Image
- Output: image
- Price: $0.035 / image (cheapest run $0.035 (35 API credits))
- Run: `POST https://api.doitong.ru/v1/run/recraft/v4.1/text-to-image`
- Quote: `POST https://api.doitong.ru/v1/quote/recraft/v4.1/text-to-image`
- Docs page: https://doitong.com/vi/developers/models/recraft/v4.1/text-to-image

## Pricing

Price: **$0.035 / image**. Billed per generated image.

The full example input below costs $0.035 = 35 API credits (1 image × 35 API credits).

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/recraft/v4.1/text-to-image` 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 |  | 1 – 10000 characters |  |
| `image_size` |  | object {width, height} \| enum (string) | no | `square_hd` | `square_hd`, `square`, `portrait_4_3`, `portrait_16_9`, `landscape_4_3`, `landscape_16_9` |  |
| `colors` |  | array of object {r, g, b} | no | `[]` |  | Mảng chứa các màu ưu tiên. |
| `colors[].r` |  | integer | no | `0` | 0 – 255 | Giá trị của thành phần màu đỏ. |
| `colors[].g` |  | integer | no | `0` | 0 – 255 | Giá trị của thành phần màu xanh lá. |
| `colors[].b` |  | integer | no | `0` | 0 – 255 | Giá trị của thành phần màu xanh dương. |
| `background_color` |  | object {r, g, b} \| null | no |  |  | Màu ưu tiên cho nền của hình ảnh được tạo. |
| `background_color.r` |  | integer | no | `0` | 0 – 255 | Giá trị của thành phần màu đỏ. |
| `background_color.g` |  | integer | no | `0` | 0 – 255 | Giá trị của thành phần màu xanh lá. |
| `background_color.b` |  | integer | no | `0` | 0 – 255 | Giá trị của thành phần màu xanh dương. |

## Example input

Required parameters only:

```json
{
  "prompt": "Tilt-shift miniature view of a fishing village harbor at golden hour, colorful boats, toy-like scale"
}
```

A fuller example:

```json
{
  "prompt": "Tilt-shift miniature view of a fishing village harbor at golden hour, colorful boats, toy-like scale",
  "image_size": "landscape_16_9"
}
```

## 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/recraft/v4.1/text-to-image?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "Tilt-shift miniature view of a fishing village harbor at golden hour, colorful boats, toy-like scale",
    "image_size": "landscape_16_9"
  }'

# 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/recraft/v4.1/text-to-image?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "Tilt-shift miniature view of a fishing village harbor at golden hour, colorful boats, toy-like scale",
    "image_size": "landscape_16_9"
  }),
});
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 = {
    "prompt": "Tilt-shift miniature view of a fishing village harbor at golden hour, colorful boats, toy-like scale",
    "image_size": "landscape_16_9",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/recraft/v4.1/text-to-image", 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": "recraft/v4.1/text-to-image",
      "input": {
        "prompt": "Tilt-shift miniature view of a fishing village harbor at golden hour, colorful boats, toy-like scale",
        "image_size": "landscape_16_9"
      },
      "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": "recraft/v4.1/text-to-image",
  "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": 35,
    "usd": "0.035",
    "charged": 35,
    "refunded": 0
  },
  "input": {
    "prompt": "Tilt-shift miniature view of a fishing village harbor at golden hour, colorful boats, toy-like scale",
    "image_size": "landscape_16_9"
  },
  "output": {
    "images": [
      {
        "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
        "content_type": "image/jpeg",
        "file_name": "0-output.jpeg",
        "file_size": 1843200
      }
    ]
  },
  "outputs": [
    {
      "type": "image",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_size": 1843200,
      "width": 1024,
      "height": 768,
      "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 |
|---|---|---|
| `images` | array of object {url, content_type, file_name, file_size} |  |

## Related models

- [Recraft V4](https://doitong.com/developers/models/recraft/v4/text-to-image.md) (`recraft/v4/text-to-image`): $0.04 / image
- [Recraft V4 (Vector)](https://doitong.com/developers/models/recraft/v4/text-to-vector.md) (`recraft/v4/text-to-vector`): $0.08 / image
- [Recraft V4 Pro](https://doitong.com/developers/models/recraft/v4/pro/text-to-image.md) (`recraft/v4/pro/text-to-image`): $0.25 / image
- [Recraft V4 Pro (Vector)](https://doitong.com/developers/models/recraft/v4/pro/text-to-vector.md) (`recraft/v4/pro/text-to-vector`): $0.30 / image
- [Recraft V4.1 Flash Text to Image](https://doitong.com/developers/models/recraft/v4.1/flash/text-to-image.md) (`recraft/v4.1/flash/text-to-image`): $0.007 / image
- [Recraft V4.1 Text to Image Pro](https://doitong.com/developers/models/recraft/v4.1/pro/text-to-image.md) (`recraft/v4.1/pro/text-to-image`): $0.21 / image
- [Recraft V4.1 Text to Image Utility](https://doitong.com/developers/models/recraft/v4.1/utility/text-to-image.md) (`recraft/v4.1/utility/text-to-image`): $0.035 / image
- [Recraft V4.1 Text to Vector](https://doitong.com/developers/models/recraft/v4.1/text-to-vector.md) (`recraft/v4.1/text-to-vector`): $0.08 / image

## Links

- HTML page: https://doitong.com/developers/models/recraft/v4.1/text-to-image
- 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=recraft/v4.1/text-to-image
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/recraft/v4.1/text-to-image