> ## 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. # SkyReels Text-to-Video > **[Core Function]** SkyReels Text-to-Video generates a video purely from a text prompt, with no input media. **[Strengths]** Strong prompt adherence and smooth motion; supports optional audio, 480p/720p/1080p output, and a fast/std quality-speed trade-off. **[Best For]** Turning an idea or script into video, concept visualization, story beats, and social clips generated from text. **[Limitations]** Do NOT use this when the user provides an image, video, or audio input; route to Image-to-Video (skyreels-i2v), Reference-to-Video (skyreels-r2v), or the video-to-video / Omni models instead. Output is capped at 1080p and 15s per clip; fast mode currently supports only sound=false (no audio). **[Routing]** Use for text-only generation. Choose mode=fast for quicker results or mode=std for balanced quality; set resolution and aspect_ratio as needed. ## OpenAPI ````yaml /model-api/skywork/skyreels-t2v.json post /skywork/skyreels-t2v openapi: 3.1.0 info: description: >- The text-to-video models API from SkyReels (Skywork). Generates videos purely from a text prompt. 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: SkyReels Text-to-Video Models API servers: - url: https://api.modellix.ai/api/v1 description: The text-to-video models API from SkyReels (Skywork). security: - bearerAuth: [] paths: /skywork/skyreels-t2v: post: summary: SkyReels Text-to-Video description: >- **[Core Function]** SkyReels Text-to-Video generates a video purely from a text prompt, with no input media. **[Strengths]** Strong prompt adherence and smooth motion; supports optional audio, 480p/720p/1080p output, and a fast/std quality-speed trade-off. **[Best For]** Turning an idea or script into video, concept visualization, story beats, and social clips generated from text. **[Limitations]** Do NOT use this when the user provides an image, video, or audio input; route to Image-to-Video (skyreels-i2v), Reference-to-Video (skyreels-r2v), or the video-to-video / Omni models instead. Output is capped at 1080p and 15s per clip; fast mode currently supports only sound=false (no audio). **[Routing]** Use for text-only generation. Choose mode=fast for quicker results or mode=std for balanced quality; set resolution and aspect_ratio as needed. operationId: skyreelsT2VAsync requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/SkyreelsT2VRequest' examples: basic: summary: Prompt only value: prompt: A red fox running through a snowy forest at dawn, cinematic duration: 5 aspect_ratio: '16:9' resolution: 1080p mode: std 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-skyreels-t2v-001 model_id: skyreels/skyreels-t2v get_result: method: GET url: https://api.modellix.ai/api/v1/tasks/task-skyreels-t2v-001 '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/InternalServerError' components: schemas: SkyreelsT2VRequest: type: object required: - prompt description: >- SkyReels text-to-video request. Generates a video from a text prompt only. Only prompt is required; other fields fall back to the provider defaults. properties: prompt: type: string minLength: 1 description: Text description of the video to generate (max 1280 tokens). example: A red fox running through a snowy forest at dawn, cinematic duration: type: integer minimum: 3 maximum: 15 default: 5 description: Video duration in seconds. example: 5 aspect_ratio: type: string enum: - '16:9' - '4:3' - '1:1' - '9:16' - '3:4' default: '16:9' description: Video aspect ratio. example: '16:9' resolution: type: string enum: - 480p - 720p - 1080p default: 1080p description: Output video resolution. example: 1080p mode: type: string enum: - fast - std default: std description: >- Quality/performance mode. fast is quicker (sound must be false); std balances speed and quality. example: std sound: type: boolean default: false description: Whether to generate audio. Not supported when mode=fast. example: false prompt_optimizer: type: boolean default: true description: >- Enable automatic prompt expansion/optimization for better fidelity and alignment. example: true 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: skyreels/skyreels-t2v 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 ''prompt'' is required' responses: BadRequest: description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' example: code: 400 message: 'Invalid parameters: parameter ''prompt'' 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`.' ````