# FLUX.3 Klein Image Editing API

> Eagarthóir FLUX.3 Klein le suas le 10 dtagairt agus socrú roghnach réada le bosca teorannaithe

Cuir íomhánna in eagar nó cumaisc iad ó leid agus 1 go 10 dtagairt in `image_urls`, ar féidir leis an leid tagairt dóibh de réir ord, amhail an chéad íomhá. Is féidir le suas le 32 `bounding_boxes` réada a choinneáil, a bhogadh, a athrú méid, a bhaint nó a chur leis; ainmnítear iad sa leid le lipéad. Bíonn leathnú leide cumasaithe de réir réamhshocraithe. Cuireann sé 1 go 4 íomhá ar ais i jpeg, png nó webp.

- Model id: `blackforestlabs/flux-3/klein/edit-image`
- Made by: Black Forest Labs
- Category: Image Editing
- Output: image
- Price per run: from $0.008 / run of output image (cheapest run $0.008 (8 API credits))
- Run: `POST https://api.doitong.ru/v1/run/blackforestlabs/flux-3/klein/edit-image`
- Quote: `POST https://api.doitong.ru/v1/quote/blackforestlabs/flux-3/klein/edit-image`
- Docs page: https://doitong.com/ga/developers/models/blackforestlabs/flux-3/klein/edit-image

## Pricing

Price: **from $0.008 / run of output image** (the lowest tier; the quote prices your exact input). Price per run: the input files are measured before the run (length, resolution, frame rate). The quote measures the same files and is exactly what the run charges.

The full example input below costs $0.009 = 9 API credits (1 run × $0.009).

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/blackforestlabs/flux-3/klein/edit-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

Send either the canonical name or the native field name (not both). Canonical names are the same across models.

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `prompt` |  | string | yes |  |  | Scríobh fotheideal iomlán a chuireann síos ar an íomhá atá uait tar éis eagarthóireachta, agus sainaithin aon tagairtí de réir a n-oird, amhail an chéad nó an dara híomhá. |
| `enable_prompt_expansion` |  | boolean | no | `true` |  | Leathnú na leide ina fotheideal mionsonraithe roimh ghiniúint, cumasaithe nuair is true an luach. Le haghaidh eagarthóireachta, bunaítear an fotheideal ar na híomhánna tagartha. |
| `seed` |  | integer \| null | no |  |  | Síol le haghaidh íomhánna in-atáirgthe: cruthaíonn leid agus síol comhionanna íomhá chomhionann nuair nach n-athraítear leagan na samhla. |
| `num_images` | `num_outputs` | integer | no | `1` | 1 – 4 | Líon na n-íomhánna a iarrtar don ghiniúint. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Gníomhachtú an tseiceálaí sábháilteachta; cumasaíonn true an tseiceáil. |
| `output_format` |  | enum (string) | no | `png` | `jpeg`, `png`, `webp` | Formáid comhaid na híomhá deiridh. |
| `image_urls` | `images` | array of image URL | yes |  | 1 – 10 items | Íomhánna tagartha a úsáidtear le haghaidh eagarthóireachta nó cumadóireachta, teoranta do 10. |
| `image_size` |  | object {width, height} \| enum (string) \| null | no |  | `square_hd`, `square`, `portrait_4_3`, `portrait_16_9`, `landscape_4_3`, `landscape_16_9` | Mar réamhshocrú, úsáidtear toisí na chéad íomhá tagartha don aschur, le teorainn 1 mheigiphicteilín i gcás iliomad tagairtí nó scálú go 4 mheigiphicteilín ar a mhéad i gcás tagartha aonair. Ní mór do gach taobh de mhéideanna sainráite a bheith idir 256 agus 4096 picteilín. |
| `bounding_boxes` |  | array of object {label, description, box, source_image_index, source_box, target_box} \| null | no |  | ≤ 32 items | Leagan amach roghnach réad chun réada tagartha a choinneáil, a bhogadh, a athmhéadú nó a bhaint, nó chun réada nua a shuíomh. Tosaíonn comhordanáidí ag (0, 0) sa chúinne uachtarach ar chlé de gach íomhá; déan tagairt do bhoscaí le lipéid sa leid, amhail `<dragon>`. |
| `bounding_boxes[].label` |  | string \| null | no |  | ≤ 64 characters | Lipéad gearr réada don bhosca, amhail `dragon`; is é `obj_<n>` an réamhshocrú. Cuir `<dragon>` sa leid chun a focail a cheangal leis an mbosca; cuirtear boscaí nach luaitear sa leid leis an radharc. |
| `bounding_boxes[].description` |  | string | yes |  | ≤ 500 characters | An réad atá le rindreáil sa bhosca, a chuma san áireamh. |
| `bounding_boxes[].box` |  | object {x_min, y_min, x_max, y_max} \| null | no |  |  | Suíomh an réada san aschur, in ionad `source_box`/`target_box` agus ag úsáid na hiompraíochta suite céanna le téacs-go-híomhá. |
| `bounding_boxes[].box.x_min` |  | number | yes |  | 0 – 1 | An teorainn chlé i gcoibhneas le leithead na híomhá, ó 0 go 1. |
| `bounding_boxes[].box.y_min` |  | number | yes |  | 0 – 1 | An teorainn uachtarach i gcoibhneas le hairde na híomhá, ó 0 go 1. |
| `bounding_boxes[].box.x_max` |  | number | yes |  | 0 – 1 | An teorainn dheas i gcoibhneas le leithead na híomhá, ó 0 go 1. |
| `bounding_boxes[].box.y_max` |  | number | yes |  | 0 – 1 | An teorainn íochtarach i gcoibhneas le hairde na híomhá, ó 0 go 1. |
| `bounding_boxes[].source_image_index` |  | integer \| null | no |  | ≥ 0 | Roghnú fhoinse an réada: fág ar lár é do réad nua, nó sainaithin tagairt atá ann cheana lena hinnéacs in `image_urls`, ag comhaireamh ó 0. |
| `bounding_boxes[].source_box` |  | object {x_min, y_min, x_max, y_max} \| null | no |  |  | Suíomh an réada san íomhá thagartha; ní mór `source_image_index` a thabhairt freisin. |
| `bounding_boxes[].source_box.x_min` |  | number | yes |  | 0 – 1 | An teorainn chlé i gcoibhneas le leithead na híomhá, ó 0 go 1. |
| `bounding_boxes[].source_box.y_min` |  | number | yes |  | 0 – 1 | An teorainn uachtarach i gcoibhneas le hairde na híomhá, ó 0 go 1. |
| `bounding_boxes[].source_box.x_max` |  | number | yes |  | 0 – 1 | An teorainn dheas i gcoibhneas le leithead na híomhá, ó 0 go 1. |
| `bounding_boxes[].source_box.y_max` |  | number | yes |  | 0 – 1 | An teorainn íochtarach i gcoibhneas le hairde na híomhá, ó 0 go 1. |
| `bounding_boxes[].target_box` |  | object {x_min, y_min, x_max, y_max} \| null | no |  |  | Bosca suite an réada san aschur: tá an dá bhosca ag teastáil chun bogadh nó athmhéadú a dhéanamh, ach ní mór an bosca seo a fhágáil gan socrú chun réad tagartha a bhaint. |
| `bounding_boxes[].target_box.x_min` |  | number | yes |  | 0 – 1 | An teorainn chlé i gcoibhneas le leithead na híomhá, ó 0 go 1. |
| `bounding_boxes[].target_box.y_min` |  | number | yes |  | 0 – 1 | An teorainn uachtarach i gcoibhneas le hairde na híomhá, ó 0 go 1. |
| `bounding_boxes[].target_box.x_max` |  | number | yes |  | 0 – 1 | An teorainn dheas i gcoibhneas le leithead na híomhá, ó 0 go 1. |
| `bounding_boxes[].target_box.y_max` |  | number | yes |  | 0 – 1 | An teorainn íochtarach i gcoibhneas le hairde na híomhá, ó 0 go 1. |

File parameters (`images`) take a public `https://` URL, a `data:` URI up to 10 MB, or the `file_url` of an upload from `POST /files`.

## Example input

Required parameters only:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "images": [
    "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  ]
}
```

A fuller example:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "image_urls": [
    "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  ]
}
```

## 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/blackforestlabs/flux-3/klein/edit-image?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "image_urls": [
      "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
    ]
  }'

# 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/blackforestlabs/flux-3/klein/edit-image?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "image_urls": [
      "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
    ]
  }),
});
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": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "image_urls": [
        "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    ],
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/blackforestlabs/flux-3/klein/edit-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": "blackforestlabs/flux-3/klein/edit-image",
      "input": {
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
        "image_urls": [
          "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
        ]
      },
      "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": "blackforestlabs/flux-3/klein/edit-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": 9,
    "usd": "0.009",
    "charged": 9,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "image_urls": [
      "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
    ]
  },
  "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,
        "width": 1024,
        "height": 768
      }
    ],
    "timings": {},
    "seed": 42,
    "has_nsfw_concepts": [
      false
    ],
    "prompt": "string"
  },
  "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, width, height} | Íomhánna a tháirgeann an tsamhail. |
| `timings` | object | Eolas ama faoin bpróiseas giniúna. |
| `seed` | integer | Síol giniúna don chéad íomhá. |
| `has_nsfw_concepts` | array of boolean | Léiríonn sé cibé acu an bhfuil coincheapa NSFW le feiceáil sna híomhánna ginte. |
| `prompt` | string | Leid a úsáidtear le linn giniúint íomhá. |

## Related models

- [FLUX.3 Klein](https://doitong.com/developers/models/blackforestlabs/flux-3/klein/text-to-image.md) (`blackforestlabs/flux-3/klein/text-to-image`): from $0.008 / run of output image
- [FLUX.1 Kontext \[pro\]](https://doitong.com/developers/models/flux-pro/kontext.md) (`flux-pro/kontext`): $0.04 / image
- [GPT Image 2.5 Edit](https://doitong.com/developers/models/openai/gpt-image-2.5/flare/edit.md) (`openai/gpt-image-2.5/flare/edit`): from $0.12 / image
- [Nano Banana 2 Edit](https://doitong.com/developers/models/nano-banana-2/edit.md) (`nano-banana-2/edit`): from $0.06 / image
- [Nano Banana Pro Edit](https://doitong.com/developers/models/nano-banana-pro/edit.md) (`nano-banana-pro/edit`): from $0.15 / image
- [Qwen Image 3 Edit](https://doitong.com/developers/models/alibaba/qwen-image-3/edit.md) (`alibaba/qwen-image-3/edit`): from $0.04 / image
- [Seedream 5.0 Pro Edit](https://doitong.com/developers/models/bytedance/seedream/v5/pro/edit.md) (`bytedance/seedream/v5/pro/edit`): from $0.0675 / run of output image
- [FLUX 2 Edit](https://doitong.com/developers/models/flux-2/edit.md) (`flux-2/edit`): $0.012 / megapixel

## Links

- HTML page: https://doitong.com/developers/models/blackforestlabs/flux-3/klein/edit-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=blackforestlabs/flux-3/klein/edit-image
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/blackforestlabs/flux-3/klein/edit-image