> ## Documentation Index > Fetch the complete documentation index at: https://docs.goenhance.ai/llms.txt > Use this file to discover all available pages before exploring further. # Wan 3.0 > Wan 3.0 text-to-video and image-to-video. Provide `image_url` for a first frame and optionally `image_end_url` for a last frame; omit both for pure text-to-video. ⚠️ **This endpoint rejects reference materials.** Wan 3.0's two input modes are mutually exclusive upstream — mixing `first_frame`/`last_frame` with reference images, videos, audio, files or links fails the whole task. Use [`wan-3-0-refs`](/api-reference/video-generations/wan-3-0-refs) for reference-driven generation. **Pricing** — per second of generated video, in tokens (USD at $0.02/token). Both wan-3-0 endpoints cost the same: | resolution | tokens/s | USD/s | |---|---|---| | 480p | 2.91 | $0.0582 | | 720p | 5.82 | $0.1164 | | 1080p | 11.64 | $0.2328 | The published per-second rate times the duration is exactly what gets charged. Example: a 5s 720p video costs 29.1 tokens. **Notes on defaults:** `resolution` defaults to `720p` rather than the upstream default of `1080p`, so an omitted resolution never silently bills at the most expensive tier. Smart duration (`-1`) is not exposed because the output length — and therefore the price — is only known after generation. Returns an `img_uuid`; poll GET /api/v1/jobs/detail (or use `custom_callback_url`) to get the generated video. ## OpenAPI ````yaml api-reference/video-generations/openapi-wan-3-0.json POST /api/v1/videos/generations openapi: 3.1.0 info: title: GoEnhance API - HappyHorse 1.1 description: Video generation with HappyHorse 1.1. version: 1.0.0 servers: - url: https://api.goenhance.ai security: [] paths: /api/v1/videos/generations: post: tags: - VideoGenerations summary: Wan 3.0 description: >- Wan 3.0 text-to-video and image-to-video. Provide `image_url` for a first frame and optionally `image_end_url` for a last frame; omit both for pure text-to-video. ⚠️ **This endpoint rejects reference materials.** Wan 3.0's two input modes are mutually exclusive upstream — mixing `first_frame`/`last_frame` with reference images, videos, audio, files or links fails the whole task. Use [`wan-3-0-refs`](/api-reference/video-generations/wan-3-0-refs) for reference-driven generation. **Pricing** — per second of generated video, in tokens (USD at $0.02/token). Both wan-3-0 endpoints cost the same: | resolution | tokens/s | USD/s | |---|---|---| | 480p | 2.91 | $0.0582 | | 720p | 5.82 | $0.1164 | | 1080p | 11.64 | $0.2328 | The published per-second rate times the duration is exactly what gets charged. Example: a 5s 720p video costs 29.1 tokens. **Notes on defaults:** `resolution` defaults to `720p` rather than the upstream default of `1080p`, so an omitted resolution never silently bills at the most expensive tier. Smart duration (`-1`) is not exposed because the output length — and therefore the price — is only known after generation. Returns an `img_uuid`; poll GET /api/v1/jobs/detail (or use `custom_callback_url`) to get the generated video. parameters: - name: Authorization in: header description: '' required: false example: '{{Authorization}}' schema: type: string requestBody: content: application/json: schema: type: object properties: model: type: string enum: - wan-3-0 description: Model name. Must be `wan-3-0`. prompt: type: string description: Text prompt describing the video. image_url: type: string format: uri description: Optional. First-frame image URL. Omit for text-to-video. ratio: type: string enum: - adaptive - '16:9' - '4:3' - '1:1' - '3:4' - '9:16' default: adaptive description: >- Output aspect ratio. `adaptive` lets the model pick from the input media. Note: unlike Wan 2.7 there is no 21:9. `aspect_ratio` is accepted as a compatible alias. duration: type: integer minimum: 2 maximum: 30 default: 5 description: Video duration in seconds. Any integer from 2 to 30. resolution: type: string enum: - 480p - 720p - 1080p default: 720p description: >- Output resolution, lowercase like every other video model. `quality` is accepted as a compatible alias. image_end_url: type: string format: uri description: >- Optional. Last-frame image URL. Must be used together with image_url. generate_audio: type: boolean default: true description: >- Whether the output contains an audio track. Enabling it costs no extra. seed: type: integer minimum: 0 maximum: 2147483647 description: Optional. Fixing the seed makes results more reproducible. custom_callback_url: type: string format: uri description: >- Optional. A publicly accessible HTTPS URL. When the task status changes (processing / success / failed), GoEnhance sends a POST request to this URL. The request body is identical to the response of GET /api/v1/jobs/detail. If your server does not respond with HTTP 200, the notification is retried up to 3 times, with a 3-second timeout per attempt. example: https://your-server.com/goenhance/callback required: - model - prompt example: model: wan-3-0 prompt: >- A cat running across a moonlit rooftop, neon city lights in the distance, cinematic resolution: 720p ratio: '16:9' duration: 5 responses: '200': description: '' content: application/json: schema: type: object properties: code: type: integer msg: type: string data: type: object properties: img_uuid: type: string required: - img_uuid required: - code - msg - data examples: '1': summary: Success value: code: 0 msg: Success data: img_uuid: c12b656c-747a-44fd-9c80-add79b0c52d5 '2': summary: Insufficient tokens value: code: 100 msg: tokens is not enough headers: {} '401': description: '' content: application/json: schema: type: object properties: code: type: integer msg: type: string required: - code - msg headers: {} deprecated: false security: [] ````