--- title: Krea 2 Medium | Runware Docs url: https://runware.ai/docs/models/krea-2-medium description: Faster Krea 2 variant for stable, consistent generation with controllable prompt strength and weighted reference guidance --- # Krea 2 Medium Krea 2 Medium is the smaller, faster, and more cost-efficient variant in the Krea 2 family. It applies heavier post-training for especially stable and consistent outputs, making it a strong fit for illustration, anime, painting, graphic design, and other expressive visual workflows. It supports text-to-image and image-to-image generation, prompt interpretation strength through the creativity control, and up to 10 weighted reference images with both positive and negative guidance. - **ID**: `krea:krea@2-medium` - **Status**: live - **Creator**: Krea - **Release Date**: May 27, 2026 - **Capabilities**: Text to Image, Image to Image, Checkpoint ## Pricing Pricing for a single image is $0.030. When using an image style reference, it's $0.035. - **1024x1024**: `$0.03` - **1024x1024 (reference image)**: `$0.035` ## Compatibility & Validation `width` and `height` must be used together. --- The following dimension combinations are supported: | Configuration | Dimensions | | --- | --- | | `1K (1:1)` | `1024x1024` | | `1K (4:3)` | `1184x896` | | `1K (3:2)` | `1248x832` | | `1K (16:9)` | `1376x768` | | `1K (2.35:1)` | `1568x672` | | `1K (4:5)` | `928x1152` | | `1K (2:3)` | `832x1248` | | `1K (9:16)` | `768x1376` | ## Notes **Custom moodboards:** Beyond the preset IDs listed in the schema, you can pass any **public** moodboard ID from [krea.ai](https://www.krea.ai). Private ones cannot be used through the API. Moodboards are addressed by UUID, so even public ones aren't discoverable without the exact ID. ## Request Parameters **API Options** Platform-level options for task execution and delivery. ### [taskType](https://runware.ai/docs/models/krea-2-medium#request-tasktype) - **Type**: `string` - **Required**: true - **Value**: `imageInference` Identifier for the type of task being performed ### [taskUUID](https://runware.ai/docs/models/krea-2-medium#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-2-medium#request-outputtype) - **Type**: `string` - **Default**: `URL` Image output type. **Allowed values**: `URL` `base64Data` `dataURI` ### [outputFormat](https://runware.ai/docs/models/krea-2-medium#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-2-medium#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-2-medium#request-webhookurl) - **Type**: `string` - **Format**: `uri` Specifies a webhook URL where JSON responses will be sent 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/platform/webhooks) (platform) ### [deliveryMethod](https://runware.ai/docs/models/krea-2-medium#request-deliverymethod) - **Type**: `string` - **Default**: `sync` Determines how the API delivers task results. **Allowed values**: - `sync` Returns complete results directly in the API response. - `async` Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse. **Learn more** (1 resource): - [Task Polling](https://runware.ai/docs/platform/task-polling) (platform) ### [uploadEndpoint](https://runware.ai/docs/models/krea-2-medium#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-2-medium#request-safety) - **Path**: `safety.checkContent` - **Type**: `object (1 property)` Content safety checking configuration for image generation. #### [checkContent](https://runware.ai/docs/models/krea-2-medium#request-safety-checkcontent) - **Path**: `safety.checkContent` - **Type**: `boolean` Enable or disable content safety checking. ### [ttl](https://runware.ai/docs/models/krea-2-medium#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-2-medium#request-includecost) - **Type**: `boolean` Include task cost in the response. ### [numberResults](https://runware.ai/docs/models/krea-2-medium#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. **Inputs** Input resources for the task (images, audio, etc). These must be nested inside the \`inputs\` object. ### [referenceImages](https://runware.ai/docs/models/krea-2-medium#request-inputs-referenceimages) - **Path**: `inputs.referenceImages` - **Type**: `array of strings or objects` Style reference images for guiding generation. Each item can be a plain image input (UUID, URL, DataURI, or Base64) or an object with an image and a per-image strength. **Examples**: **Shorthand format:** When you don't need to specify a custom strength, you can pass a plain image input directly. It will use the default influence strength. ```json "referenceImages": [ "aac49721-1964-481a-ae78-8a4e29b91402" ] ``` **Object format:** When you need to control the exact influence of the reference image, use an object with `image` and `strength`. Positive values guide the output toward the reference; negative values guide away from it. ```json "referenceImages": [ { "image": "aac49721-1964-481a-ae78-8a4e29b91402", "strength": 0.7 } ] ``` **Multiple images:** You can provide multiple reference images and even mix both formats. ```json "referenceImages": [ "aac49721-1964-481a-ae78-8a4e29b91402", { "image": "3ad204c3-a9de-4963-8a1a-c3911e3afafe", "strength": 1.2 } ] ``` **Format 1: string[]**: - **Type**: `string` Image input (UUID, URL, Data URI, or Base64). **Format 2: object[]**: #### [image](https://runware.ai/docs/models/krea-2-medium#request-inputs-referenceimages-format-2-image) - **Path**: `inputs.referenceImages.image` - **Type**: `string` - **Required**: true Image input (UUID, URL, Data URI, or Base64). #### [strength](https://runware.ai/docs/models/krea-2-medium#request-inputs-referenceimages-format-2-strength) - **Path**: `inputs.referenceImages.strength` - **Type**: `float` - **Min**: `0` - **Max**: `1` - **Default**: `0.5` Influence strength of the reference image on the generated output. **Core Parameters** Primary parameters that define the task output. ### [model](https://runware.ai/docs/models/krea-2-medium#request-model) - **Type**: `string` - **Required**: true - **Value**: `krea:krea@2-medium` Identifier of the model to use for generation. **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-2-medium#request-positiveprompt) - **Type**: `string` - **Required**: true 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-2-medium#request-width) - **Type**: `integer` - **Required**: true - **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-2-medium#request-height) - **Type**: `integer` - **Required**: true - **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) ### [seed](https://runware.ai/docs/models/krea-2-medium#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. ### [creativity](https://runware.ai/docs/models/krea-2-medium#request-settings-creativity) - **Path**: `settings.creativity` - **Type**: `string` - **Default**: `medium` Creativity level. Controls how closely the model follows the prompt versus generating its own interpretation. **Allowed values**: `raw` `low` `medium` `high` ### [moodboards](https://runware.ai/docs/models/krea-2-medium#request-settings-moodboards) - **Path**: `settings.moodboards` - **Type**: `array of objects (2 properties)` Moodboards to use as creative direction. A moodboard is built from a group of images that share an overall creative direction: palette, texture, style, mood, or composition. #### [id](https://runware.ai/docs/models/krea-2-medium#request-settings-moodboards-id) - **Path**: `settings.moodboards.id` - **Type**: `string` - **Required**: true The identifier of the moodboard to use as creative direction. **Allowed values**: - `36faac0b-2b82-45b7-961f-5019cfc886c0` Retro Web - `0bff265b-ba63-468f-9acb-e38705a343b8` Futurist Glam - `99f3fd48-c434-4f50-a798-57d3a0e3c064` Coquette - `1b1aaa13-b4dd-4db8-b550-0305324dd70b` Cyber Zine - `1c173dd2-e6b3-47f6-9565-93485cec15be` Lo-Fi Cyanotype - `29499086-a16b-4ee9-b04a-fdabea7e050b` Impasto Expressionism - `cb3a3e97-7eb6-4ed8-adee-18e384310f7c` Expressive Marker - `c3421c04-db95-4f18-a229-003227a54669` Thermal Airbrush - `4372ab77-fd8c-4c86-9c88-03b6f0d91ee3` Minimalist Sketch - `3b1ec8e1-3eda-467d-be5d-4fa5eda3b70c` Film Noir - `d4d96c37-a989-457a-94ee-6a0a968d178c` Vintage Pop Graphic #### [strength](https://runware.ai/docs/models/krea-2-medium#request-settings-moodboards-strength) - **Path**: `settings.moodboards.strength` - **Type**: `float` - **Min**: `0` - **Max**: `1` - **Default**: `0.23` Influence strength of the moodboard on the generated output. **Features** Standalone addons and post-processing features. ### [watermark](https://runware.ai/docs/models/krea-2-medium#request-watermark) - **Path**: `watermark.text` - **Type**: `object (7 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-2-medium#request-watermark-text) - **Path**: `watermark.text` - **Type**: `string` - **Min**: `2` - **Max**: `32` Watermark text. #### [image](https://runware.ai/docs/models/krea-2-medium#request-watermark-image) - **Path**: `watermark.image` - **Type**: `string` Watermark image (UUID, URL, Data URI, or Base64). #### [displayPosition](https://runware.ai/docs/models/krea-2-medium#request-watermark-displayposition) - **Path**: `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](https://runware.ai/docs/models/krea-2-medium#request-watermark-tiled) - **Path**: `watermark.tiled` - **Type**: `boolean` Enable tiled watermark. #### [opacity](https://runware.ai/docs/models/krea-2-medium#request-watermark-opacity) - **Path**: `watermark.opacity` - **Type**: `float` - **Min**: `0.1` - **Max**: `1` - **Step**: `0.01` Watermark opacity. #### [fontColor](https://runware.ai/docs/models/krea-2-medium#request-watermark-fontcolor) - **Path**: `watermark.fontColor` - **Type**: `string` Text color in hex format. #### [bgColor](https://runware.ai/docs/models/krea-2-medium#request-watermark-bgcolor) - **Path**: `watermark.bgColor` - **Type**: `string` Background color in hex format. ## Response Parameters ### [taskType](https://runware.ai/docs/models/krea-2-medium#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-2-medium#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-2-medium#response-imageuuid) - **Type**: `string` - **Required**: true - **Format**: `UUID v4` UUID of the output image. ### [imageURL](https://runware.ai/docs/models/krea-2-medium#response-imageurl) - **Type**: `string` - **Format**: `uri` URL of the output image. ### [imageBase64Data](https://runware.ai/docs/models/krea-2-medium#response-imagebase64data) - **Type**: `string` Base64-encoded image data. ### [imageDataURI](https://runware.ai/docs/models/krea-2-medium#response-imagedatauri) - **Type**: `string` - **Format**: `uri` Data URI of the output image. ### [seed](https://runware.ai/docs/models/krea-2-medium#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-2-medium#response-nsfwcontent) - **Type**: `boolean` Flag indicating if NSFW content was detected. ### [cost](https://runware.ai/docs/models/krea-2-medium#response-cost) - **Type**: `float` Task cost in USD. Present when `includeCost` is set to `true` in the request. ## Examples ### Origami Fox Weather Bureau (Text to Image) ![Origami Fox Weather Bureau]() --- ### Alpine Marmot Cocoa Tin Design (Text to Image) ![Alpine Marmot Cocoa Tin Design]() --- ### Porcelain Heron Lantern Parade (Text to Image) ![Porcelain Heron Lantern Parade]() --- ### Astronaut Ramen Delivery Poster (Text to Image) ![Astronaut Ramen Delivery Poster]()