> ## Documentation Index > Fetch the complete documentation index at: https://docs.evolink.ai/llms.txt > Use this file to discover all available pages before exploring further. # Krea 2 Turbo Image Generation > - Krea 2 Turbo is an ultra-fast text-to-image generation model that produces high-fidelity, cinematic visuals - Text-to-image only; reference images are not supported - Asynchronous processing mode, use the returned task ID to [query](/en/api-manual/task-management/get-task-detail) - Generated image links are valid for 24 hours, please save them promptly ## OpenAPI ````yaml en/api-manual/image-series/krea/krea-2-turbo-image-generate.json POST /v1/images/generations openapi: 3.1.0 info: title: krea-2-turbo Interface description: >- Create image tasks using AI models with support for multiple models and parameter configurations license: name: MIT version: 1.0.0 servers: - url: https://api.evolink.ai description: Production environment security: - bearerAuth: [] tags: - name: Image Generation description: AI image generation related APIs paths: /v1/images/generations: post: tags: - Image Generation summary: krea-2-turbo Interface description: >- - Krea 2 Turbo is an ultra-fast text-to-image generation model that produces high-fidelity, cinematic visuals - Text-to-image only; reference images are not supported - Asynchronous processing mode, use the returned task ID to [query](/en/api-manual/task-management/get-task-detail) - Generated image links are valid for 24 hours, please save them promptly operationId: createImageGeneration requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ImageGenerationRequest' examples: text_to_image: summary: Text to Image value: model: krea-2-turbo prompt: >- A cinematic product poster, silver headphones floating against a deep matte-black backdrop with soft rim lighting size: '16:9' quality: 1K responses: '200': description: Image generation task created successfully content: application/json: schema: $ref: '#/components/schemas/ImageGenerationResponse' '400': description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: invalid_request message: Invalid request parameters type: invalid_request_error '401': description: Unauthenticated, invalid or expired token content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: unauthorized message: Invalid or expired token type: authentication_error '402': description: Insufficient quota, recharge required content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: insufficient_quota message: Insufficient quota. Please top up your account. type: insufficient_quota '403': description: Access denied content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: model_access_denied message: 'Token does not have access to model: krea-2-turbo' type: invalid_request_error '429': description: Rate limit exceeded content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: rate_limit_exceeded message: Too many requests, please try again later type: rate_limit_error '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: error: code: internal_error message: Internal server error type: api_error components: schemas: ImageGenerationRequest: type: object required: - model - prompt properties: model: type: string description: Image generation model name enum: - krea-2-turbo default: krea-2-turbo example: krea-2-turbo prompt: type: string description: >- Prompt describing the image to be generated. English works best, with a maximum length of `640` tokens example: >- A cinematic product poster, silver headphones floating against a deep matte-black backdrop with soft rim lighting size: type: string description: >- Aspect ratio of the generated image; defaults to `1:1` when omitted. The actual output pixels are determined jointly by `size` and `quality`. **Supported ratios (11 total):** `1:1`, `4:3`, `3:4`, `5:4`, `4:5`, `2:3`, `3:2`, `9:16`, `16:9`, `1:2`, `2:1` **Output pixel reference (`size` × `quality`):** | Ratio | `1K` | `2K` | |---|---|---| | `1:1` | 1024×1024 | 2048×2048 | | `4:3` | 1152×896 | 2304×1728 | | `3:4` | 896×1152 | 1728×2304 | | `5:4` | 1152×896 | 2240×1792 | | `4:5` | 896×1152 | 1792×2240 | | `2:3` | 832×1280 | 1664×2496 | | `3:2` | 1280×832 | 2496×1664 | | `9:16` | 768×1344 | 1472×2688 | | `16:9` | 1344×768 | 2688×1472 | | `1:2` | 704×1472 | 1408×2816 | | `2:1` | 1472×704 | 2816×1408 | enum: - '1:1' - '4:3' - '3:4' - '5:4' - '4:5' - '2:3' - '3:2' - '9:16' - '16:9' - '1:2' - '2:1' default: '1:1' example: '16:9' quality: type: string description: >- Output resolution tier `1K` / `2K`; defaults to `1K` when omitted. `2K` produces higher-resolution images than `1K`. Billing differs by tier — see the pricing page enum: - 1K - 2K default: 1K example: 1K seed: type: integer description: |- Random seed for generating similar compositions **Note:** - Range: `0` to `1048576` - `0` or empty uses a random seed - Same seed with same prompt may reproduce the same composition minimum: 0 maximum: 1048576 example: 12345 nsfw_check: type: boolean description: |- Enable additional NSFW content moderation **Note:** - Default: `false` (disabled) - Basic content moderation is always active even when disabled - Enable for stricter content filtering default: false example: false callback_url: type: string description: >- HTTPS callback address after task completion **Callback Timing:** - Triggered when task is completed, failed, or cancelled - Sent after billing confirmation is completed **Security Restrictions:** - Only HTTPS protocol is supported - Callback to internal IP addresses is prohibited (127.0.0.1, 10.x.x.x, 172.16-31.x.x, 192.168.x.x, etc.) - URL length must not exceed `2048` characters **Callback Mechanism:** - Timeout: `10` seconds - Maximum `3` retries on failure (retries after `1` second/`2` seconds/`4` seconds) - Callback response body format is consistent with the task query API response format - Callback address returning 2xx status code is considered successful, other status codes will trigger retry format: uri example: https://your-domain.com/webhooks/image-task-completed ImageGenerationResponse: type: object properties: created: type: integer description: Task creation timestamp example: 1751280000 id: type: string description: Task ID example: task-unified-1751280000-k2t9x8a3 model: type: string description: Actual model name used example: krea-2-turbo object: type: string enum: - image.generation.task description: Specific type of the task progress: type: integer description: Task progress percentage (0-100) minimum: 0 maximum: 100 example: 0 status: type: string description: Task status enum: - pending - processing - completed - failed example: pending task_info: $ref: '#/components/schemas/TaskInfo' description: Async task information type: type: string enum: - text - image - audio - video description: Output type of the task example: image usage: $ref: '#/components/schemas/Usage' description: Usage and billing information ErrorResponse: type: object properties: error: type: object properties: code: type: string description: Error code identifier message: type: string description: Error description type: type: string description: Error type TaskInfo: type: object properties: can_cancel: type: boolean description: Whether the task can be cancelled; always `false` for krea-2-turbo example: false estimated_time: type: integer description: Estimated completion time (seconds) minimum: 0 example: 45 Usage: type: object description: Usage and billing information properties: billing_rule: type: string description: Billing rule enum: - per_call - per_token - per_second example: per_call credits_reserved: type: number description: Estimated credits consumed minimum: 0 example: 0.05 user_group: type: string description: User group category example: default securitySchemes: bearerAuth: type: http scheme: bearer description: >- ##All APIs require Bearer Token authentication## **Get API Key:** Visit [API Key Management Page](https://evolink.ai/dashboard/keys) to get your API Key **Add to request header:** ``` Authorization: Bearer YOUR_API_KEY ``` ````