> ## Documentation Index > Fetch the complete documentation index at: https://docs.modellix.ai/llms.txt > Use this file to discover all available pages before exploring further. # Kling Image O1 > [Core Function] Kling Image O1 is a reasoning-enhanced multimodal image model. [Strengths] It performs deep reasoning over prompts and references to handle complex logic, spatial relationships, and intricate multi-image combinations. [Best For] Highly recommended for: complex scenes requiring strict logical or spatial accuracy. [Limitations] Do NOT use for simple artistic generation where V3 is faster and more stylistic. [Routing] Route to this model when the prompt involves complex physical logic or strict spatial reasoning. ## OpenAPI ````yaml /model-api/kling/kling-i2i.json post /kling/kling-image-o1 openapi: 3.1.0 info: description: The image-to-image models API from Kling AI. version: 1.0.0 contact: name: Modellix Support email: support@modellix.ai title: Kling Image-to-Image Models API servers: - url: https://api.modellix.ai/api/v1 description: The image-to-image models API from Kling AI. security: - bearerAuth: [] paths: /kling/kling-image-o1: post: summary: Kling Image O1 description: >- [Core Function] Kling Image O1 is a reasoning-enhanced multimodal image model. [Strengths] It performs deep reasoning over prompts and references to handle complex logic, spatial relationships, and intricate multi-image combinations. [Best For] Highly recommended for: complex scenes requiring strict logical or spatial accuracy. [Limitations] Do NOT use for simple artistic generation where V3 is faster and more stylistic. [Routing] Route to this model when the prompt involves complex physical logic or strict spatial reasoning. operationId: klingImageO1Async requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/KlingImageO1Request' examples: text_only: summary: Pure text generation value: prompt: A serene landscape with mountains at sunset resolution: 2k aspect_ratio: '16:9' image_reference: summary: Single image reference value: prompt: Transform <<>> into watercolor painting style images: - https://example.com/photo.jpg resolution: 2k multi_image: summary: Multiple image combination value: prompt: >- Combine <<>> and <<>> in modern office setting images: - https://example.com/person1.jpg - https://example.com/person2.jpg aspect_ratio: auto 'n': 4 mixed_input: summary: Multiple image combination value: prompt: Complex scene with multiple references images: - https://example.com/background.jpg - data:image/jpeg;base64,/9j/4AAQ... aspect_ratio: auto resolution: 2k 'n': 3 responses: '200': description: Task submitted successfully content: application/json: schema: $ref: '#/components/schemas/AsyncTaskResponse' example: code: 0 message: success data: status: pending task_id: task-omni-vwx234 model_id: model-123 get_result: method: GET url: https://api.modellix.ai/api/v1/tasks/task-omni-vwx234 '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/InternalServerError' components: schemas: KlingImageO1Request: type: object required: - prompt properties: prompt: type: string description: >- Image description text, supports Chinese and English. Can use <<>>, <<>> etc. to reference images from images array minLength: 1 maxLength: 2500 example: A serene landscape with mountains at sunset images: type: array description: >- Reference image URLs or Base64 strings. Simplified flattened parameter. Maximum 10 items. maxItems: 10 items: type: string minLength: 1 description: Image URL or Base64 encoded data example: https://example.com/reference.jpg example: - https://example.com/image1.jpg - data:image/jpeg;base64,/9j/4AAQ... resolution: type: string description: Image resolution. Supports 1K and 2K default: 1k enum: - 1k - 2k example: 2k aspect_ratio: type: string description: >- Image aspect ratio. Supports 'auto' for intelligent aspect ratio selection default: auto enum: - '16:9' - '9:16' - '1:1' - '4:3' - '3:4' - '3:2' - '2:3' - '21:9' - auto example: auto 'n': type: integer description: Number of images to generate per request default: 1 minimum: 1 maximum: 9 example: 1 description: >- Note: This model does NOT support: negative_prompt, image (single), image_reference, image_fidelity, human_fidelity, subject_image_list, scene_image, or style_image parameters. Use images for multiple image inputs instead. AsyncTaskResponse: type: object required: - code - message - data properties: code: type: integer description: Response code, 0 indicates success example: 0 message: type: string description: Response message example: success data: type: object required: - status - task_id - model_id properties: status: type: string enum: - pending - processing description: Task status example: pending task_id: type: string description: Unique task identifier example: task-abc123 model_id: type: string description: Model ID example: model-123 get_result: type: object description: API information to query the task result properties: method: type: string description: HTTP method example: GET url: type: string description: Full URL to query the task result example: https://api.modellix.ai/api/v1/tasks/task-abc123 description: Detailed data about the submitted asynchronous task. ErrorResponse: type: object required: - code - message properties: code: type: integer description: Error code (equals HTTP status code) example: 400 message: type: string description: 'Error message in format ''Category: detail''' example: 'Invalid parameters: parameter ''image'' is required' responses: BadRequest: description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 400 message: 'Invalid parameters: parameter ''image'' is required' Unauthorized: description: Unauthorized - Invalid or missing API Key content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 401 message: 'Authentication failed: invalid API key' TooManyRequests: description: Too many requests - Rate limit exceeded headers: X-RateLimit-Limit: description: Maximum requests per minute schema: type: integer example: 100 X-RateLimit-Remaining: description: Remaining quota in current window schema: type: integer example: 0 X-RateLimit-Reset: description: Rate limit window reset time (Unix timestamp) schema: type: integer example: 1704067260 content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 429 message: >- Rate limit exceeded: 100 requests per minute, retry after 60 seconds InternalServerError: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 500 message: Internal server error securitySchemes: bearerAuth: type: http scheme: bearer description: 'API Key authentication. Format: `Bearer YOUR_API_KEY`.' ````