# FLUX.3 Klein Image Editing API

> FLUX.3 Klein-redigeren gitta 10 referánssain ja eaktodáhtolaš bounding-box-dávvirbidjamiin

Doaimmaha dahje čoahkká govvosiid bivdda ja 1 rájes 10 rádjái referánssaiguin `image_urls`-s, maid bivdda sáhttá čujuhit ortnega mielde, omd. vuosttaš govvii. Gitta 32 `bounding_boxes` sáhttet doalahit, lihkadit, sturrodit, sihkut dahje lasihit áššiid, mat namuhuvvojit bivddas labelain. Bivdda viiddideapmi lea standárdan alde. Máhcaha 1 rájes 4 rádjái gova jpeg-, png- dahje webp-formáhtas.

- 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/se/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 |  |  | Čále ollislaš govvvačielggadusa dárbbašuvvon govvagii maŋŋá redigeren, ja čájet referánssaid järjestaga, ovdamearkka dihte vuosttaš dahje nuppi govvva. |
| `enable_prompt_expansion` |  | boolean | no | `true` |  | Bivdda viiddideapmi dárkilis govvvačielggadussan ovdal ráhkadeami, doaibmago lea true. Redigerenis čielggadus vuođđuduvvo referánsgovvagiidda. |
| `seed` |  | integer \| null | no |  |  | Seed geardduhahtti govvagiidda: identtalaš bivdda ja seed ráhkadeaba identtalaš govvva, jos modealla veršuvdna lea seamma. |
| `num_images` | `num_outputs` | integer | no | `1` | 1 – 4 | Ráhkadeapmái bivdojuvvon govvamearri. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Sihkarvuođa dárkkisteami aktiviseren; true aktive dárkkisteami. |
| `output_format` |  | enum (string) | no | `png` | `jpeg`, `png`, `webp` | Boahtteva govva fiilaformáhtta. |
| `image_urls` | `images` | array of image URL | yes |  | 1 – 10 items | Referánsgovvvat redigerenii dahje komposišuvdnii, ráddjejuvvon 10:i. |
| `image_size` |  | object {width, height} \| enum (string) \| null | no |  | `square_hd`, `square`, `portrait_4_3`, `portrait_16_9`, `landscape_4_3`, `landscape_16_9` | Boađussturrodat lea standárdan vuosttaš referánsa sturrodat, eanemustá 1 megapiksel máŋga referánssain dahje skálerejuvvon eanemustá 4 megapikselii ovtta referánssain. Čielga sturrodagaid goappáge bealli galgá leat gaskal 256 ja 4096 pixel. |
| `bounding_boxes` |  | array of object {label, description, box, source_image_index, source_box, target_box} \| null | no |  | ≤ 32 items | Válljejuvvon áššelayout, mii seailluha, sirdaša, stuorida, unnida dahje váldá eret referánsaáššiid, dahje bidjá ođđa áššiid. Koordináhtat álget (0, 0)-s juohke govvagiid bajit-gurut čiegas; čájet láhtuid bivddas, nugo `<dragon>`. |
| `bounding_boxes[].label` |  | string \| null | no |  | ≤ 64 characters | Oanehis áššelábel láhtus, nugo `dragon`; standárda lea `obj_<n>`. Bija `<dragon>` bivddii čatnan dihte dan sániid láhtui; láhtut, maid bivdda ii namut, lasihuvvojit scenárii. |
| `bounding_boxes[].description` |  | string | yes |  | ≤ 500 characters | Ášši, mii rendererejuvvo láhtus, oktan dan hápmái. |
| `bounding_boxes[].box` |  | object {x_min, y_min, x_max, y_max} \| null | no |  |  | Ášše boađussajádat, mii zamaha `source_box`/`target_box` ja geavaha seamma sajádatláhtuma go teaksta-govvaráhkadeapmi. |
| `bounding_boxes[].box.x_min` |  | number | yes |  | 0 – 1 | Gurut rádji govvvačájeheami ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].box.y_min` |  | number | yes |  | 0 – 1 | Bajit rádji govvvaallodaga ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].box.x_max` |  | number | yes |  | 0 – 1 | Oike rádji govvvačájeheami ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].box.y_max` |  | number | yes |  | 0 – 1 | Vuolit rádji govvvaallodaga ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].source_image_index` |  | integer \| null | no |  | ≥ 0 | Ášše gáldoválljen: guođe eret ođđa ášši várás, dahje čájet dálá referánssa indeaksain `image_urls`, lohkat 0:s álggos. |
| `bounding_boxes[].source_box` |  | object {x_min, y_min, x_max, y_max} \| null | no |  |  | Ášše sajádat referánsgovvagis; `source_image_index` ferte maid addon. |
| `bounding_boxes[].source_box.x_min` |  | number | yes |  | 0 – 1 | Gurut rádji govvvačájeheami ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].source_box.y_min` |  | number | yes |  | 0 – 1 | Bajit rádji govvvaallodaga ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].source_box.x_max` |  | number | yes |  | 0 – 1 | Oike rádji govvvačájeheami ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].source_box.y_max` |  | number | yes |  | 0 – 1 | Vuolit rádji govvvaallodaga ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].target_box` |  | object {x_min, y_min, x_max, y_max} \| null | no |  |  | Ášše boađussajádatláhtus: sirdašeapmi dahje sturrodatrievdadeapmi gáibida goappaš láhtuid, muhto referánsaášši váldin eret gáibida guođđit dán láhtu meroštallan haga. |
| `bounding_boxes[].target_box.x_min` |  | number | yes |  | 0 – 1 | Gurut rádji govvvačájeheami ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].target_box.y_min` |  | number | yes |  | 0 – 1 | Bajit rádji govvvaallodaga ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].target_box.x_max` |  | number | yes |  | 0 – 1 | Oike rádji govvvačájeheami ektui, 0 rájes 1 rádjái. |
| `bounding_boxes[].target_box.y_max` |  | number | yes |  | 0 – 1 | Vuolit rádji govvvaallodaga ektui, 0 rájes 1 rádjái. |

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} | Modealla bokte buvttaduvvon govvat. |
| `timings` | object | Ráhkadeami áigodatdieđut. |
| `seed` | integer | Vuosttaš govvva ráhkadeami seed. |
| `has_nsfw_concepts` | array of boolean | Čájeha leat go ráhkaduvvon govvagiin NSFW-konseaptat. |
| `prompt` | string | Govvaráhkadeamis geavahuvvon bivdda. |

## 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