---
title: Krea 3 | Runware Docs
url: https://runware.ai/docs/models/krea-3
description: Krea image model for precise region edits, reference-guided generation, and up to 4K output
---
# Krea 3

![Krea 3](https://assets.runware.ai/covers/krea-3.jpg)

Krea 3 is Krea's image model for text-to-image generation and precise editing of existing images. Boxes mark the areas to change and the objects to bring in from up to eight reference images, each with an optional label and instruction, while the rest of the frame stays untouched. Output comes in 1K, 2K, and 4K across ten aspect ratios, with a fast or high thinking level.

- **Status**: live
- **ID**: `krea:krea@3`
- Try in Playground
- **Creator**: Krea
- **Release Date**: October 15, 2026
- **Capabilities**: Text to Image, Image to Image, Edit, Checkpoint

## Pricing

$0.0125 $0.025 from, per output megapixel · ~45s per request

**Rates** (per output megapixel)

- Output: `$0.0125 $0.025`
- Each reference image: `$0.0125 $0.025`

**4 example generations**

- [text-to-image](https://runware.ai/docs/models/krea-3/examples#example-canal-house-hotel-website-hero) · 1360×768: `$0.0125` (~11s)
- [reference-bounding-boxes](https://runware.ai/docs/models/krea-3/examples#example-antique-auction-banner-expansion) · 2K: `$0.15` (~54s)
- [reference-to-image](https://runware.ai/docs/models/krea-3/examples#example-peatland-science-mug-catalog-photograph) · 2K: `$0.15` (~41s)
- [local-editing](https://runware.ai/docs/models/krea-3/examples#example-bicycle-chain-wax-tin-retouch) · 4K: `$0.40` (~49s)

times vary, measured end to end · [How pricing works](https://runware.ai/docs/models-api/pricing)

## Compatibility & Validation

Either provide `inputs.referenceImages`, or specify `width/height`.

---

When `inputs.referenceImages` is provided, provide exactly one of `width` or `resolution`.

---

`resolution` cannot be used with `width/height`.

---

When `resolution` is provided, `inputs.referenceImages` is required.

---

When `settings.editRegions` is provided, `inputs.referenceImages` is required.

---

`width` and `height` must be used together.

---

The following dimension combinations are supported:

| Configuration | Dimensions |
| --- | --- |
| `1K (1:1)` | `1024x1024` |
| `1K (4:5)` | `912x1152` |
| `1K (3:4)` | `880x1184` |
| `1K (2:3)` | `832x1248` |
| `1K (9:16)` | `768x1360` |
| `1K (5:4)` | `1152x912` |
| `1K (4:3)` | `1184x880` |
| `1K (3:2)` | `1248x832` |
| `1K (16:9)` | `1360x768` |
| `1K (21:9)` | `1568x672` |
| `2K (1:1)` | `2048x2048` |
| `2K (4:5)` | `1824x2288` |
| `2K (3:4)` | `1776x2368` |
| `2K (2:3)` | `1680x2512` |
| `2K (9:16)` | `1536x2736` |
| `2K (5:4)` | `2288x1824` |
| `2K (4:3)` | `2368x1776` |
| `2K (3:2)` | `2512x1680` |
| `2K (16:9)` | `2736x1536` |
| `2K (21:9)` | `3136x1344` |
| `4K (1:1)` | `4096x4096` |
| `4K (4:5)` | `3648x4576` |
| `4K (3:4)` | `3552x4736` |
| `4K (2:3)` | `3360x5024` |
| `4K (9:16)` | `3072x5472` |
| `4K (5:4)` | `4576x3648` |
| `4K (4:3)` | `4736x3552` |
| `4K (3:2)` | `5024x3360` |
| `4K (16:9)` | `5472x3072` |
| `4K (21:9)` | `6272x2688` |

## Request Parameters

**API Options**

Platform-level options for task execution and delivery.

### [taskType](https://runware.ai/docs/models/krea-3#request-tasktype)

- **Type**: `string`
- **Required**: true
- **Value**: `imageInference`

Identifier for the type of task being performed.

### [taskUUID](https://runware.ai/docs/models/krea-3#request-taskuuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.

### [outputType](https://runware.ai/docs/models/krea-3#request-outputtype)

- **Type**: `string`
- **Default**: `URL`

Image output type.

**Allowed values**: `URL` `base64Data` `dataURI`

### [outputFormat](https://runware.ai/docs/models/krea-3#request-outputformat)

- **Type**: `string`
- **Default**: `JPG`

Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.

- \`JPG\`: Best for photorealistic images with smaller file sizes (no transparency).
- \`PNG\`: Lossless compression, supports high quality and transparency (alpha channel).
- \`WEBP\`: Modern format providing superior compression and transparency support.

> [!NOTE]
> \*\*Transparency\*\*: If you are using features like background removal or LayerDiffuse that require transparency, you must select a format that supports an alpha channel (e.g., \`PNG\`, \`WEBP\`, \`TIFF\`). \`JPG\` does not support transparency.

**Allowed values**: `JPG` `PNG` `WEBP`

### [outputQuality](https://runware.ai/docs/models/krea-3#request-outputquality)

- **Type**: `integer`
- **Min**: `20`
- **Max**: `99`
- **Default**: `95`

Compression quality of the output. Higher values preserve quality but increase file size.

### [webhookURL](https://runware.ai/docs/models/krea-3#request-webhookurl)

- **Type**: `string`
- **Format**: `uri`

Webhook URL that receives JSON responses via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.

**Learn more** (1 resource):

- [Webhooks](https://runware.ai/docs/models-api/webhooks) (platform)

### [deliveryMethod](https://runware.ai/docs/models/krea-3#request-deliverymethod)

- **Type**: `string`
- **Default**: `sync`

Determines how the API delivers task results.

**Allowed values**:

- `sync` Returns results directly in the API response. Over HTTP, a task still running after 120 seconds continues as an async task and comes back with status 'processing'. Poll for its results using getResponse.
- `async` Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse.

**Learn more** (1 resource):

- [Task Polling](https://runware.ai/docs/models-api/task-polling) (platform)

### [uploadEndpoint](https://runware.ai/docs/models/krea-3#request-uploadendpoint)

- **Type**: `string`
- **Format**: `uri`

Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.

**Common use cases:**

- **Cloud storage**: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
- **CDN integration**: Upload to content delivery networks for immediate distribution.

```text
// S3 presigned URL for secure upload
https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600

// Google Cloud Storage presigned URL
https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789

// Custom storage endpoint
https://storage.example.com/uploads/generated-image.jpg
```

The content data will be sent as the request body to the specified URL when generation is complete.

### [safety](https://runware.ai/docs/models/krea-3#request-safety)

- **Path**: `safety.checkContent`
- **Type**: `object (1 property)`

Content safety checking configuration for image generation.

#### [checkContent](https://runware.ai/docs/models/krea-3#request-safety-checkcontent)

- **Path**: `safety.checkContent`
- **Type**: `boolean`

Enable or disable content safety checking. Increases total generation time.

### [ttl](https://runware.ai/docs/models/krea-3#request-ttl)

- **Type**: `integer`
- **Min**: `60`

Time-to-live (TTL) in seconds for generated content. Only applies when `outputType` is `URL`.

### [includeCost](https://runware.ai/docs/models/krea-3#request-includecost)

- **Type**: `boolean`

Include task cost in the response.

### [numberResults](https://runware.ai/docs/models/krea-3#request-numberresults)

- **Type**: `integer`
- **Min**: `1`
- **Max**: `20`
- **Default**: `1`

Number of results to generate. Each result uses a different seed, producing variations of the same parameters.

### [routing](https://runware.ai/docs/models/krea-3#request-routing)

- **Path**: `routing.allowedModels`
- **Type**: `object (8 properties)`

Model router options. Only read when `model` is `auto`, and never sent to the model.

#### [allowedModels](https://runware.ai/docs/models/krea-3#request-routing-allowedmodels)

- **Path**: `routing.allowedModels`
- **Type**: `array of strings`
- **Min items**: `2`

Models the router may choose from. Nothing outside this list is considered, so a request none of them can serve is refused.

#### [excludedModels](https://runware.ai/docs/models/krea-3#request-routing-excludedmodels)

- **Path**: `routing.excludedModels`
- **Type**: `array of strings`
- **Min items**: `1`

Models the router may not choose. Every other model stays a candidate.

#### [preferences](https://runware.ai/docs/models/krea-3#request-routing-preferences)

- **Path**: `routing.preferences`
- **Type**: `object (3 properties)`

Relative importance of each dimension when models are compared. Weights, not thresholds.

##### [quality](https://runware.ai/docs/models/krea-3#request-routing-preferences-quality)

- **Path**: `routing.preferences.quality`
- **Type**: `integer`
- **Min**: `0`
- **Max**: `5`

Importance of one dimension. `0` leaves it out of the decision.

##### [speed](https://runware.ai/docs/models/krea-3#request-routing-preferences-speed)

- **Path**: `routing.preferences.speed`
- **Type**: `integer`
- **Min**: `0`
- **Max**: `5`

Importance of one dimension. `0` leaves it out of the decision.

##### [cost](https://runware.ai/docs/models/krea-3#request-routing-preferences-cost)

- **Path**: `routing.preferences.cost`
- **Type**: `integer`
- **Min**: `0`
- **Max**: `5`

Importance of one dimension. `0` leaves it out of the decision.

#### [maxPrice](https://runware.ai/docs/models/krea-3#request-routing-maxprice)

- **Path**: `routing.maxPrice`
- **Type**: `float`
- **Min**: `0`

Upper bound on what this request may cost, in USD. A model whose cost cannot be bounded is not chosen.

#### [requirements](https://runware.ai/docs/models/krea-3#request-routing-requirements)

- **Path**: `routing.requirements`
- **Type**: `string`
- **Max**: `3000`

Conditions the result has to meet, in plain words, such as a style or a feature. A model that cannot meet them is not chosen. Output size is set with width and height rather than described here.

**Inputs**

Input resources for the task (images, audio, etc). These must be nested inside the \`inputs\` object.

### [referenceImages](https://runware.ai/docs/models/krea-3#request-inputs-referenceimages)

- **Path**: `inputs.referenceImages`
- **Type**: `array of strings`
- **Min items**: `1`
- **Max items**: `8`

List of reference images (UUID, URL, Data URI, or Base64).

**Core Parameters**

Primary parameters that define the task output.

### [model](https://runware.ai/docs/models/krea-3#request-model)

- **Type**: `string`
- **Required**: true
- **Value**: `krea:krea@3`

Send `auto` instead of an AIR identifier to have the model router choose the model for this task. The rest of the request is unchanged, every value you send is kept, and only the parameters you leave out are filled in. See [Model Router](https://runware.ai/docs/models-api/model-router).

**Learn more** (3 resources):

- [Text To Image: Model Selection](https://runware.ai/docs/learn/text-to-image#model-selection) (learn)
- [Image Inpainting: Model Specialized Inpainting Models](https://runware.ai/docs/learn/image-inpainting#model-specialized-inpainting-models) (learn)
- [Image Outpainting: Other Critical Parameters](https://runware.ai/docs/learn/image-outpainting#other-critical-parameters) (learn)

### [positivePrompt](https://runware.ai/docs/models/krea-3#request-positiveprompt)

- **Type**: `string`
- **Required**: true
- **Min**: `1`
- **Max**: `10000`

Text prompt describing elements to include in the generated output.

**Learn more** (1 resource):

- [Prompts](https://runware.ai/docs/learn/prompts) (learn)

### [width](https://runware.ai/docs/models/krea-3#request-width)

- **Type**: `integer`
- **Required**: conditional — Required when inputs.referenceImages is not provided
- **Paired with**: height

Width of the generated media in pixels.

**Learn more** (2 resources):

- [Dimensions](https://runware.ai/docs/learn/dimensions) (learn)
- [Image Outpainting: Dimensions Critical For Outpainting](https://runware.ai/docs/learn/image-outpainting#dimensions-critical-for-outpainting) (learn)

### [height](https://runware.ai/docs/models/krea-3#request-height)

- **Type**: `integer`
- **Required**: conditional — Required when inputs.referenceImages is not provided
- **Paired with**: width

Height of the generated media in pixels.

**Learn more** (2 resources):

- [Dimensions](https://runware.ai/docs/learn/dimensions) (learn)
- [Image Outpainting: Dimensions Critical For Outpainting](https://runware.ai/docs/learn/image-outpainting#dimensions-critical-for-outpainting) (learn)

### [resolution](https://runware.ai/docs/models/krea-3#request-resolution)

- **Type**: `string`

Resolution preset for the output. When used with input media, automatically matches the aspect ratio from the input.

**Allowed values**: `1K` `2K` `4K`

### [seed](https://runware.ai/docs/models/krea-3#request-seed)

- **Type**: `integer`
- **Min**: `0`
- **Max**: `9223372036854776000`

Random seed for reproducible generation. When not provided, a random seed is generated in the unsigned 32-bit range.

**Learn more** (1 resource):

- [Seed](https://runware.ai/docs/learn/seed) (learn)

**Settings**

Technical parameters to fine-tune the inference process. These must be nested inside the \`settings\` object.

### [editRegions](https://runware.ai/docs/models/krea-3#request-settings-editregions)

- **Path**: `settings.editRegions`
- **Type**: `array of objects (7 properties)`
- **Min items**: `1`
- **Max items**: `24`

Boxes on the reference images. Boxes on the first reference image mark where edits happen. Boxes on the other reference images mark source objects. A box is referenced from `positivePrompt` or a `note` as `@label`, or by its 1-based position as `@1`, `@2`.

#### [referenceIndex](https://runware.ai/docs/models/krea-3#request-settings-editregions-referenceindex)

- **Path**: `settings.editRegions.referenceIndex`
- **Type**: `integer`
- **Required**: true
- **Min**: `0`
- **Max**: `7`

Index into `inputs.referenceImages` of the image the box sits on. Must be less than the number of reference images.

#### [x](https://runware.ai/docs/models/krea-3#request-settings-editregions-x)

- **Path**: `settings.editRegions.x`
- **Type**: `float`
- **Required**: true
- **Min**: `0`
- **Max**: `1`

Left edge of the box, as a fraction of the image width.

#### [y](https://runware.ai/docs/models/krea-3#request-settings-editregions-y)

- **Path**: `settings.editRegions.y`
- **Type**: `float`
- **Required**: true
- **Min**: `0`
- **Max**: `1`

Top edge of the box, as a fraction of the image height.

#### [width](https://runware.ai/docs/models/krea-3#request-settings-editregions-width)

- **Path**: `settings.editRegions.width`
- **Type**: `float`
- **Required**: true
- **Max**: `1`
- **Paired with**: height

Width of the box, as a fraction of the image width. `x` plus `width` must be at most 1.

#### [height](https://runware.ai/docs/models/krea-3#request-settings-editregions-height)

- **Path**: `settings.editRegions.height`
- **Type**: `float`
- **Required**: true
- **Max**: `1`
- **Paired with**: width

Height of the box, as a fraction of the image height. `y` plus `height` must be at most 1.

#### [label](https://runware.ai/docs/models/krea-3#request-settings-editregions-label)

- **Path**: `settings.editRegions.label`
- **Type**: `string`
- **Min**: `1`
- **Max**: `128`

Name for referring to the box as `@label`, in place of its position number.

#### [note](https://runware.ai/docs/models/krea-3#request-settings-editregions-note)

- **Path**: `settings.editRegions.note`
- **Type**: `string`
- **Max**: `600`

Instruction for this box. Takes precedence over `positivePrompt` inside the box.

### [thinkingLevel](https://runware.ai/docs/models/krea-3#request-settings-thinkinglevel)

- **Path**: `settings.thinkingLevel`
- **Type**: `string`
- **Default**: `fast`

Controls the depth of internal reasoning the model performs before generating a response.

**Allowed values**:

- `fast` Expands the prompt quickly, then generates.
- `high` Plans with a stronger reasoning step for complex or multi-step edits, and takes longer.

**Features**

Standalone addons and post-processing features.

### [watermark](https://runware.ai/docs/models/krea-3#request-advancedfeatures-watermark)

- **Path**: `advancedFeatures.watermark`
- **Type**: `object (6 properties)`

Configuration object for adding watermarks to generated videos. Watermarks can be applied using either text or image content with customizable positioning and appearance. You must provide either `text` or `image` content for the watermark, but not both.

**Text watermark**:

```json
"advancedFeatures": {
  "watermark": {
    "text": "© 2025 Company",
    "displayPosition": "bottom-right",
    "opacity": 0.6,
    "fontColor": "#ffffff",
    "bgColor": "#000000"
  }
}
```

**Image watermark**:

```json
"advancedFeatures": {
  "watermark": {
    "image": "c64351d5-4c59-42f7-95e1-eace013eddab",
    "displayPosition": "top-left",
    "opacity": 0.6
  }
}
```

**Tiled watermark**:

```json
"advancedFeatures": {
  "watermark": {
    "text": "PREVIEW",
    "tiled": true,
    "opacity": 0.4,
    "fontColor": "#cccccc"
  }
}
```

#### [text](https://runware.ai/docs/models/krea-3#request-advancedfeatures-watermark-text)

- **Path**: `advancedFeatures.watermark.text`
- **Type**: `string`
- **Min**: `2`
- **Max**: `32`

Watermark text.

#### [image](https://runware.ai/docs/models/krea-3#request-advancedfeatures-watermark-image)

- **Path**: `advancedFeatures.watermark.image`
- **Type**: `string`

Watermark image (UUID, URL, Data URI, or Base64).

#### [displayPosition](https://runware.ai/docs/models/krea-3#request-advancedfeatures-watermark-displayposition)

- **Path**: `advancedFeatures.watermark.displayPosition`
- **Type**: `string`

Watermark position.

**Allowed values**: `top-left` `top-center` `top-right` `center-left` `center-center` `center-right` `bottom-left` `bottom-center` `bottom-right` `tiled`

#### [opacity](https://runware.ai/docs/models/krea-3#request-advancedfeatures-watermark-opacity)

- **Path**: `advancedFeatures.watermark.opacity`
- **Type**: `float`
- **Min**: `0.1`
- **Max**: `1`
- **Step**: `0.01`

Watermark opacity.

#### [fontColor](https://runware.ai/docs/models/krea-3#request-advancedfeatures-watermark-fontcolor)

- **Path**: `advancedFeatures.watermark.fontColor`
- **Type**: `string`

Text color in hex format.

#### [bgColor](https://runware.ai/docs/models/krea-3#request-advancedfeatures-watermark-bgcolor)

- **Path**: `advancedFeatures.watermark.bgColor`
- **Type**: `string`

Background color in hex format.

## Response Parameters

### [taskType](https://runware.ai/docs/models/krea-3#response-tasktype)

- **Type**: `string`
- **Required**: true
- **Value**: `imageInference`

Identifier for the type of task this response belongs to.

### [taskUUID](https://runware.ai/docs/models/krea-3#response-taskuuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID v4 identifier echoed from the original request, used to match async responses to their tasks.

### [imageUUID](https://runware.ai/docs/models/krea-3#response-imageuuid)

- **Type**: `string`
- **Required**: true
- **Format**: `UUID v4`

UUID of the output image.

### [imageURL](https://runware.ai/docs/models/krea-3#response-imageurl)

- **Type**: `string`
- **Format**: `uri`

URL of the output image.

### [imageBase64Data](https://runware.ai/docs/models/krea-3#response-imagebase64data)

- **Type**: `string`

Base64-encoded image data.

### [imageDataURI](https://runware.ai/docs/models/krea-3#response-imagedatauri)

- **Type**: `string`
- **Format**: `uri`

Data URI of the output image.

### [seed](https://runware.ai/docs/models/krea-3#response-seed)

- **Type**: `integer`

The seed used for generation. If none was provided, shows the randomly generated seed.

### [NSFWContent](https://runware.ai/docs/models/krea-3#response-nsfwcontent)

- **Type**: `boolean`

Flag indicating if NSFW content was detected.

### [cost](https://runware.ai/docs/models/krea-3#response-cost)

- **Type**: `float`

Task cost in USD. Present when `includeCost` is set to `true` in the request.

## Examples

### text-to-image (text-to-image)

![Canal House Hotel Website Hero](https://assets.runware.ai/examples/krea-3/998313a5-871f-4e2f-8636-1568b320c486.jpg)

```json
{
  "taskType": "imageInference",
  "taskUUID": "db2f2839-3225-4755-9540-c4ab3e099339",
  "model": "krea:krea@3",
  "positivePrompt": "Commercial hospitality photograph for the website hero of a small design-led canal house hotel in Utrecht, Netherlands. A woman in her early forties arrives by bicycle and pauses beside the entrance of a carefully restored narrow brick canal house, one hand resting on the bicycle handlebar and the other holding a simple canvas overnight bag. She wears realistic understated travel clothing: navy raincoat, cream knit sweater, straight-leg trousers and practical leather shoes. The hotel entrance feels welcoming but unbranded, with a dark green painted door, clean brass hardware, two modest potted plants and warm natural wood visible through the open doorway. Include a small section of calm canal, stone quay and neighboring historic facades to establish the location without turning it into a tourist postcard. Ordinary soft late-morning daylight, mild neutral sky, natural colors, realistic skin and fabric texture, restrained contemporary travel photography, no dramatic weather and no cinematic color grade. Eye-level camera, 35mm lens, landscape composition. Place the guest and bicycle in the right third as the clear subject, with uncluttered brick facade and softly detailed canal-side context across the left half for potential website copy. Believable proportions, candid relaxed posture, polished but authentic commercial production. No visible logos, no signs, no lettering, no interface, no text overlay, no borders or mockup.",
  "width": 1360,
  "height": 768
}
```

---

### reference-to-image (reference-to-image)

![Peatland Science Mug Catalog Photograph](https://assets.runware.ai/examples/krea-3/07d33fc2-18d7-42dd-ba22-d530b6f50d56.jpg)

```json
{
  "taskType": "imageInference",
  "taskUUID": "b8512988-5774-4a67-bffb-8ff5f2b317c2",
  "model": "krea:krea@3",
  "positivePrompt": "Create one finished vertical 2K catalog advertising photograph for a children’s natural-history museum gift shop. Take the exact product identity, silhouette, proportions, materials, colors, handle shape and complete surface illustration from image 1. Take the environment, furnishings, tabletop objects, camera position, perspective, depth, ambient light and overall spatial arrangement from image 2. Place the product naturally in the open foreground tabletop area of image 2 at a believable scale, standing upright and fully visible, with the illustrated face turned clearly toward the camera. Preserve the educational artwork accurately and make it the visual focus without altering or inventing details. Match contact shadow, reflections, color temperature and depth of field so the placement looks like a single authentic photograph. Keep nearby learning materials secondary and neatly arranged, with enough breathing room around the product for catalog use. Ordinary soft daylight and practical room light, ordinary 50mm lens perspective, realistic ceramic texture, restrained commercial color grading, warm curious mood, no people, no added lettering, no logo, no packaging, no interface, no mockup frame.",
  "resolution": "2K",
  "inputs": {
    "referenceImages": [
      "https://assets.runware.ai/assets/inputs/8f92241f-d048-47f8-b2f6-8dccd5aac831.jpg",
      "https://assets.runware.ai/assets/inputs/eba590b1-65f4-452d-866d-944ec295b6d3.jpg"
    ]
  }
}
```

---

### local-editing (local-editing)

![Bicycle Chain Wax Tin Retouch](https://assets.runware.ai/examples/krea-3/ceb0dd2b-cc99-4eb9-9dc7-12073275ffdd.jpg)

```json
{
  "taskType": "imageInference",
  "taskUUID": "c771a548-e482-484b-b3b3-068874548bf7",
  "model": "krea:krea@3",
  "positivePrompt": "Retouch only @item. Change the tin from plain silver metal to a smooth satin safety-orange finish. Replace its white label with a clean navy-and-cream paper label carrying the exact wording \"DRY WEATHER CHAIN WAX\" and \"120 g\" in restrained, legible sans-serif typography. Preserve the tin's original dimensions, cylindrical geometry, lid seams, position, perspective, lighting, reflections, edge detail, and contact with the counter. Everything outside @item must stay identical to the reference image, including the worktop, tools, rag, bicycle components, background, shadows, color balance, depth of field, framing, and camera angle. Add nothing and remove nothing.",
  "resolution": "4K",
  "settings": {
    "editRegions": [
      {
        "referenceIndex": 0,
        "x": 0.25,
        "y": 0.25,
        "width": 0.5,
        "height": 0.5,
        "label": "item"
      }
    ],
    "thinkingLevel": "high"
  },
  "inputs": {
    "referenceImages": [
      "https://assets.runware.ai/assets/inputs/d6fc527f-7b9d-4c63-8f33-f6b438d92722.jpg"
    ]
  }
}
```

---

### reference-bounding-boxes (reference-bounding-boxes)

![Antique Auction Banner Expansion](https://assets.runware.ai/examples/krea-3/c9ec70ee-2302-4fc9-836c-b7f63e92c1ed.jpg)

```json
{
  "taskType": "imageInference",
  "taskUUID": "6c40d51f-5419-4cb5-b817-39de70df81b2",
  "model": "krea:krea@3",
  "positivePrompt": "Create a finished 4:3 auction catalog banner from the first reference image. Preserve the original square photograph as the central portion and outpaint naturally to the left and right, continuing the same sage plaster walls, limestone floor, side daylight, perspective, restrained antique-auction setting and ordinary documentary photography. Extend only plausible room details toward the outer edges, keeping the widened composition calm and balanced. Replace @target with @source at the same scale, perspective and lighting, while the rest of the first image stays unchanged. The Swedish Mora clock must remain upright, complete and centered exactly where the original clock stood, with convincing floor contact and a soft ambient shadow consistent with the room. Maintain realistic materials, neutral exposure and subdued sage, limestone, pale blue-gray and aged-wood colors. No people, no lettering, no logos, no dramatic lighting, no theatrical atmosphere.",
  "resolution": "2K",
  "settings": {
    "editRegions": [
      {
        "referenceIndex": 0,
        "x": 0.3,
        "y": 0.2,
        "width": 0.4,
        "height": 0.6,
        "label": "target"
      },
      {
        "referenceIndex": 1,
        "x": 0.2,
        "y": 0.15,
        "width": 0.6,
        "height": 0.7,
        "label": "source"
      }
    ],
    "thinkingLevel": "high"
  },
  "inputs": {
    "referenceImages": [
      "https://assets.runware.ai/assets/inputs/be02a419-f000-48a7-a8a4-bc84203d1c68.jpg",
      "https://assets.runware.ai/assets/inputs/8ec270b6-5a09-4fab-b696-2839651bbf97.jpg"
    ]
  }
}
```