> ## 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. # Grok Imagine Video 1.5 Lite I2V > [Core Function] Grok Imagine Video 1.5 Lite I2V animates a single starting image into a video with native audio. [Strengths] It uses the input image as the first frame, keeps the output aspect ratio aligned with that image, and adds lip-synced speech. [Best For] Highly recommended for: animating a photo or illustration into a short clip when the Lite backbone is enough. [Limitations] Do NOT use this model for text-only generation, reference images, voice references, pinned frames, video editing, or video extension. It requires one starting image. Duration is 1-15 seconds and resolution is 480p, 720p, or 1080p. 1080p is upscaled from 720p, not native 1080p. The output aspect ratio follows the input image. [Routing] Use this model when the user provides one starting image and wants the Lite backbone. For text-only video, use Grok Imagine Video 1.5 Lite. If the user needs reference images, voices, pinned frames, or native 1080p, use the full Grok Imagine Video 1.5 models. ## OpenAPI ````yaml /media-model-api/xai/xai-i2v.json post /xai/grok-imagine-video-1.5-lite-i2v openapi: 3.1.0 info: description: >- The image-to-video models API from xAI Grok Imagine. Includes single-frame image-to-video (animate a starting image) and reference-to-video (generate a video that preserves the subjects from reference images). Tasks are asynchronous: submit, then poll the task endpoint for the result. version: 1.0.0 contact: name: Modellix Support email: support@modellix.ai title: xAI Grok Imagine Image-to-Video Models API servers: - url: https://api.modellix.ai/api/v1 description: The image-to-video models API from xAI Grok Imagine. security: - bearerAuth: [] paths: /xai/grok-imagine-video-1.5-lite-i2v: post: summary: Grok Imagine Video 1.5 Lite I2V description: >- [Core Function] Grok Imagine Video 1.5 Lite I2V animates a single starting image into a video with native audio. [Strengths] It uses the input image as the first frame, keeps the output aspect ratio aligned with that image, and adds lip-synced speech. [Best For] Highly recommended for: animating a photo or illustration into a short clip when the Lite backbone is enough. [Limitations] Do NOT use this model for text-only generation, reference images, voice references, pinned frames, video editing, or video extension. It requires one starting image. Duration is 1-15 seconds and resolution is 480p, 720p, or 1080p. 1080p is upscaled from 720p, not native 1080p. The output aspect ratio follows the input image. [Routing] Use this model when the user provides one starting image and wants the Lite backbone. For text-only video, use Grok Imagine Video 1.5 Lite. If the user needs reference images, voices, pinned frames, or native 1080p, use the full Grok Imagine Video 1.5 models. operationId: grokImagineVideo15LiteI2VAsync requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/GrokImagineVideo15LiteI2VRequest' examples: basic: summary: Image and prompt value: image: https://example.com/portrait.png prompt: The subject blinks once full_options: summary: Duration and resolution value: image: https://example.com/scene.png prompt: The frame slowly brightens duration: 8 resolution: 480p 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-xai-i2v-lite-001 model_id: xai/grok-imagine-video-1.5-lite-i2v get_result: method: GET url: https://api.modellix.ai/api/v1/tasks/task-xai-i2v-lite-001 '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/InternalServerError' components: schemas: GrokImagineVideo15LiteI2VRequest: type: object required: - image - prompt description: >- xAI Grok Imagine Video 1.5 Lite image-to-video request. The input image is the first frame and the output aspect ratio follows that image. 1080p is upscaled from 720p. properties: prompt: type: string minLength: 1 description: Motion description for the generated video example: The subject blinks once image: type: string minLength: 1 description: Starting frame image URL or base64 data URI example: https://example.com/portrait.png duration: type: integer minimum: 1 maximum: 15 default: 8 description: Video duration in seconds example: 8 resolution: type: string enum: - 480p - 720p - 1080p default: 480p description: Video resolution. 1080p is upscaled from 720p example: 480p 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 for polling example: task-abc123 model_id: type: string description: Model ID in `provider/model` format example: xai/grok-imagine-video-i2v get_result: type: object description: API information to query the task result properties: method: type: string example: GET url: type: string 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 example: 400 message: type: string 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`.' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.