Parameters
| Name | Description | Type | Required | Enums |
|---|---|---|---|---|
| prompt | Text prompt describing the scene and referencing characters. Required. Use character1, character2, character3, etc. to reference images in the reference_images array (first image = character1, second = character2, etc.). Supports any language input. Maximum length: 5000 non-Chinese characters or 2500 Chinese characters (automatically truncated if exceeded) | string | Yes | - |
| reference_images | Array of reference image URLs. Supports 1-9 images. Images are referenced in the prompt using character1, character2, etc., following array order. Image requirements: Format: JPEG, JPG, PNG, WEBP; Resolution: Short edge >= 400 pixels (720P+ recommended); File size: <= 10MB per image. Supports HTTP/HTTPS URLs | string[] | Yes | - |
| duration | Video duration in seconds. Must be an integer between 3 and 15 | integer | No | 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 |
| ratio | Video aspect ratio. Determines the output video dimensions | string | No | 16:9, 9:16, 1:1, 4:3, 3:4, 4:5, 5:4, 9:21, 21:9 |
| resolution | Video resolution level. The model automatically scales to the nearest total pixels based on the selected resolution | string | No | 720P, 1080P |
| seed | Random seed for reproducibility. If not specified, the system generates a random seed. Note: Due to the probabilistic nature of model generation, even with the same seed, results may not be completely identical | integer | No | - |
Pricing
Unit: $/sec
| Dimension | Pricing |
|---|---|
| resolution: 720P | 0.1280 |
| resolution: 1080P | 0.2290 |
Related Models
- alibaba/happyhorse-1.0-t2v: [Core Function] HappyHorse 1.0 T2V is a breakout, highly optimized text-to-video model. [Strengths] It provides streamlined, fast, and high-quality video generation (up to 15s at 1080p) with native audio support, acting as a highly efficient alternative to Wan 2.7. [Best For] Highly recommended for: fast experimentation, rapid content creation, and users specifically requesting ‘HappyHorse’. [Limitations] Might lack some of the deeply integrated legacy editing features found strictly within the broader Wan 2.7 ecosystem. [Routing] Route to this model when the user explicitly mentions ‘HappyHorse’ or desires a streamlined, high-performance alternative to Wan.
- alibaba/happyhorse-1.0-i2v: [Core Function] HappyHorse 1.0 I2V is a streamlined image-to-video model. [Strengths] It generates high-quality 720P/1080P video (3-15s) from an image efficiently, with native audio support. [Best For] Highly recommended for: rapid image animation and robust character motion. [Limitations] Does not support complex video continuation like Wan 2.7 I2V. [Routing] Use when the user requests ‘HappyHorse’ or a streamlined image animation.
- alibaba/happyhorse-1.0-video-edit: [Core Function] HappyHorse 1.0 Video Edit is a streamlined video editing model. [Strengths] It provides high-quality video editing capabilities (with or without reference images) within the highly optimized HappyHorse architecture. [Best For] Highly recommended for: fast, high-quality video modifications, especially when the user explicitly requests HappyHorse. [Limitations] May lack the deep instruction-based logical replacement mechanics of Wan 2.7 Video Editing. [Routing] Route to this model when the user explicitly requests ‘HappyHorse’ for their video editing task.
- alibaba/happyhorse-1.1-t2v: [Core Function] HappyHorse 1.1 T2V is Alibaba’s latest streamlined text-to-video model. [Strengths] It generates 720P/1080P video with native audio support, 3-15 second duration, and an expanded set of aspect ratios including 4:5, 5:4, 9:21, and 21:9. [Best For] Highly recommended for: fast HappyHorse text-to-video generation, social video formats, and high-throughput content creation. [Limitations] It does not expose custom audio controls; use Wan 2.7 T2V when custom audio input is required. [Routing] Prefer this model when the user explicitly requests HappyHorse text-to-video or wants the latest HappyHorse generation quality.
- alibaba/happyhorse-1.1-i2v: [Core Function] HappyHorse 1.1 I2V is Alibaba’s latest streamlined first-frame image-to-video model. [Strengths] It turns a single image into high-quality 720P/1080P video with native audio support and 3-15 second duration; output aspect ratio follows the first frame image. [Best For] Highly recommended for: rapid image animation, product motion previews, and simple character or scene animation. [Limitations] It does not accept an explicit ratio parameter; use T2V or R2V when you need a fixed generated aspect ratio. [Routing] Prefer this model when the user provides one image and requests HappyHorse image animation.
- alibaba/happyhorse-1.1-r2v: [Core Function] HappyHorse 1.1 R2V is Alibaba’s latest reference-image-to-video model. [Strengths] It uses 1-9 reference images to preserve subject or character appearance while generating new video actions, supports 720P/1080P output, 3-15 second duration, and expanded aspect ratios including 4:5, 5:4, 9:21, and 21:9. [Best For] Highly recommended for: character-consistent storytelling, reference-based product shots, and multi-image subject composition. [Limitations] Do NOT use if the user simply wants to animate a single image exactly as provided; use HappyHorse I2V instead. [Routing] Use when the user provides one or more reference images and asks for a newly generated HappyHorse video.
