> ## 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 Video O1 I2V > [Core Function] Kling Video O1 I2V is the image-to-video slice of Kling O1 Omni Video. [Strengths] Reasoning-enhanced generation from 1-7 reference images, 720p/1080p, duration 3-10s (single image only 5 or 10). [Best For] Complex physical motion grounded in reference frames. [Limitations] No native audio; no aspect_ratio (follows first frame); duration capped at 10s. [Routing] Prefer this for O1-quality I2V; use Kling Video O1 V2V when a source video is required. ## OpenAPI ````yaml /model-api/kling/kling-i2v.json post /kling/kling-video-o1-i2v openapi: 3.1.0 info: description: The image-to-video models API from Kling AI. version: 1.0.0 contact: name: Modellix Support email: support@modellix.ai title: Kling Image-to-Video Models API servers: - url: https://api.modellix.ai/api/v1 description: The image-to-video models API from Kling AI. security: - bearerAuth: [] paths: /kling/kling-video-o1-i2v: post: summary: Kling Video O1 I2V description: >- [Core Function] Kling Video O1 I2V is the image-to-video slice of Kling O1 Omni Video. [Strengths] Reasoning-enhanced generation from 1-7 reference images, 720p/1080p, duration 3-10s (single image only 5 or 10). [Best For] Complex physical motion grounded in reference frames. [Limitations] No native audio; no aspect_ratio (follows first frame); duration capped at 10s. [Routing] Prefer this for O1-quality I2V; use Kling Video O1 V2V when a source video is required. operationId: klingVideoO1I2VAsync requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/KlingVideoO1I2VRequest' examples: single_image: summary: Single image I2V value: images: - https://example.com/keyframe.jpg prompt: The subject slowly turns toward the camera resolution: 1080p audio: 'off' duration: 5 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-o1-i2v-123 model_id: model-123 get_result: method: GET url: https://api.modellix.ai/api/v1/tasks/task-o1-i2v-123 '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/InternalServerError' components: schemas: KlingVideoO1I2VRequest: type: object required: - prompt - images properties: prompt: type: string description: Video generation prompt. minLength: 1 maxLength: 2500 example: >- The subject slowly turns toward the camera while wind moves through their hair images: type: array description: >- Required reference images (max 7 when no reference video). With a single image, duration must be 5 or 10. minItems: 1 maxItems: 7 items: type: string minLength: 1 example: https://example.com/keyframe.jpg audio: type: string description: 'Official O1 settings.audio without reference video: off only.' default: 'off' enum: - 'off' example: 'off' resolution: type: string description: Output video resolution. Aspect ratio follows the first frame. default: 720p enum: - 720p - 1080p example: 1080p duration: type: integer description: >- Video duration in seconds (3-10). With exactly one image, only 5 or 10 are allowed. default: 5 enum: - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 example: 5 description: >- Kling Video O1 I2V — category slice of kling-video-o1. images required; no videos. 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 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`.' ````