# FLUX.3 Klein Image Editing API

> Deasaiche FLUX.3 Klein le suas ri 10 iomraidhean agus suidheachadh nithean roghainneil le bogsaichean crìche

Deasaich no dèan co-dhealbhadh ìomhaighean à prompt agus 1 gu 10 iomraidhean ann an `image_urls`, air am faod am prompt iomradh a thoirt a rèir òrduigh, leithid a’ chiad ìomhaigh. Faodaidh suas ri 32 `bounding_boxes` nithean a chumail, a ghluasad, ath-mheudachadh, a thoirt air falbh no a chur ris, air an ainmeachadh sa phrompt le leubail. Tha leudachadh prompt air a ghnàth. Tillidh e 1 gu 4 ìomhaighean ann an jpeg, png no 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/gd/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 |  |  | Sgrìobh caption slàn a’ mìneachadh na h-ìomhaigh a tha thu ag iarraidh às dèidh deasachaidh, a’ comharrachadh iomraidhean a rèir an t-sreath, leithid a’ chiad no an dàrna ìomhaigh. |
| `enable_prompt_expansion` |  | boolean | no | `true` |  | Leudachadh prompt gu caption mhionaideach ro ghineadh, air a chomasachadh nuair a tha e fìor. Airson deasachaidh, tha an caption stèidhichte air na h-ìomhaighean iomraidh. |
| `seed` |  | integer \| null | no |  |  | Sìol airson ìomhaighean ath-riochdachail: cruthaichidh prompt agus sìol co-ionann an aon ìomhaigh nuair nach eil tionndadh a’ mhodail air atharrachadh. |
| `num_images` | `num_outputs` | integer | no | `1` | 1 – 4 | Àireamh nan ìomhaighean a chaidh iarraidh airson gineadh. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Gnìomhachadh an t-sgrùdaiche sàbhailteachd; tha true a’ comasachadh sgrùdaidh. |
| `output_format` |  | enum (string) | no | `png` | `jpeg`, `png`, `webp` | Cruth faidhle na h-ìomhaigh a thig às. |
| `image_urls` | `images` | array of image URL | yes |  | 1 – 10 items | Ìomhaighean iomraidh air an cleachdadh airson deasachaidh no co-dhèanamh, cuibhrichte gu 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` | Bidh tomhasan às-chuir a’ chleachdaidh bhun-roghainn de thomhasan a’ chiad iomraidh, le crìoch aig 1 megapixel airson iomraidhean iomadach no air an sgèileadh gu 4 megapixel aig a’ char as motha airson aon iomradh. Feumaidh gach taobh de mheudan soilleir a bhith eadar 256 agus 4096 piogsail. |
| `bounding_boxes` |  | array of object {label, description, box, source_image_index, source_box, target_box} \| null | no |  | ≤ 32 items | Cruth nì roghainneil airson nithean iomraidh a chumail, a ghluasad, ath-mheudachadh no a thoirt air falbh, no nithean ùra a chur. Tòisichidh co-chomharran aig (0, 0) ann an oisean gu h-àrd air an taobh chlì gach ìomhaigh; thoir iomradh air bogsaichean le bileagan sa phrompt, leithid `<dragon>`. |
| `bounding_boxes[].label` |  | string \| null | no |  | ≤ 64 characters | Bileag ghoirid nì airson a’ bhogsa, leithid `dragon`; is e `obj_<n>` am bun-roghainn. Cuir `<dragon>` sa phrompt gus na faclan aige a cheangal ris a’ bhogsa; thèid bogsaichean nach eil air an ainmeachadh sa phrompt a chur ris an t-sealladh. |
| `bounding_boxes[].description` |  | string | yes |  | ≤ 500 characters | Nì ri renderadh taobh a-staigh a’ bhogsa, a’ gabhail a-steach a choltas. |
| `bounding_boxes[].box` |  | object {x_min, y_min, x_max, y_max} \| null | no |  |  | Suidheachadh às-chuir an nì, a’ cur `source_box`/`target_box` nan àite agus a’ cleachdadh an aon ghiùlain suidheachaidh ri text-to-image. |
| `bounding_boxes[].box.x_min` |  | number | yes |  | 0 – 1 | Crìoch chlì air a cur an cèill an coimeas ri leud na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].box.y_min` |  | number | yes |  | 0 – 1 | Crìoch àrd air a cur an cèill an coimeas ri àirde na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].box.x_max` |  | number | yes |  | 0 – 1 | Crìoch dheas air a cur an cèill an coimeas ri leud na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].box.y_max` |  | number | yes |  | 0 – 1 | Crìoch ìosal air a cur an cèill an coimeas ri àirde na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].source_image_index` |  | integer \| null | no |  | ≥ 0 | Taghadh tùs an nì: fàg às airson nì ùr, no comharraich iomradh làithreach leis a’ chlàr-amais aige ann an `image_urls`, a’ cunntadh bho 0. |
| `bounding_boxes[].source_box` |  | object {x_min, y_min, x_max, y_max} \| null | no |  |  | Suidheachadh an nì taobh a-staigh na h-ìomhaigh iomraidh; feumar `source_image_index` a thoirt seachad cuideachd. |
| `bounding_boxes[].source_box.x_min` |  | number | yes |  | 0 – 1 | Crìoch chlì air a cur an cèill an coimeas ri leud na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].source_box.y_min` |  | number | yes |  | 0 – 1 | Crìoch àrd air a cur an cèill an coimeas ri àirde na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].source_box.x_max` |  | number | yes |  | 0 – 1 | Crìoch dheas air a cur an cèill an coimeas ri leud na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].source_box.y_max` |  | number | yes |  | 0 – 1 | Crìoch ìosal air a cur an cèill an coimeas ri àirde na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].target_box` |  | object {x_min, y_min, x_max, y_max} \| null | no |  |  | Bogsa suidheachaidh às-chuir an nì: airson gluasad no ath-mheudachadh feumar an dà bhogsa, agus airson nì iomraidh a thoirt air falbh feumar am bogsa seo fhàgail gun shuidheachadh. |
| `bounding_boxes[].target_box.x_min` |  | number | yes |  | 0 – 1 | Crìoch chlì air a cur an cèill an coimeas ri leud na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].target_box.y_min` |  | number | yes |  | 0 – 1 | Crìoch àrd air a cur an cèill an coimeas ri àirde na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].target_box.x_max` |  | number | yes |  | 0 – 1 | Crìoch dheas air a cur an cèill an coimeas ri leud na h-ìomhaigh, bho 0 gu 1. |
| `bounding_boxes[].target_box.y_max` |  | number | yes |  | 0 – 1 | Crìoch ìosal air a cur an cèill an coimeas ri àirde na h-ìomhaigh, bho 0 gu 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} | Ìomhaighean a chaidh a chruthachadh leis a’ mhodail. |
| `timings` | object | Fiosrachadh tìm mun phròiseas gineadh. |
| `seed` | integer | Sìol gineadh airson a’ chiad ìomhaigh. |
| `has_nsfw_concepts` | array of boolean | A’ comharrachadh a bheil bun-bheachdan NSFW a’ nochdadh anns na h-ìomhaighean a chaidh a ghineadh. |
| `prompt` | string | Prompt a chaidh a chleachdadh rè gineadh ìomhaighe. |

## 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