The current callable scope covers prompt-only video, one-image video, and reference video with 2 to 9 images. Editing an existing video is currently unavailable.
The final cost is rounded up to whole credits.
Example output
HappyHorse 1.0
Text to Video · Image to Video
Example output
HappyHorse 1.0
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Model details
Provider
HappyHorse
Category
Video
Capabilities
Text to Video · Image to Video · Reference to Video
Credit charges
Credit rate: 28–48 per second of output
Inputs
Prompt + optional images
Prompt requirements
Up to 5,000 characters
Developer access
HappyHorse 1.0 can be called through Public API v1. Modes that use reference media require uploads through the Files API. Check the model reference for supported inputs.
HappyHorse 1.0 FAQ
HappyHorse 1.0 on Rivya supports text-to-video, single-image animation, and multi-image reference video from one model page.
The current callable scope covers prompt-only video, one-image video, and reference video with 2 to 9 images. Editing an existing video is currently unavailable.
Choose 720p or 1080p and a 3 to 15 second duration. Aspect ratio is available for text-to-video and multi-image reference video; the prompt is optional only in single-image mode.
HappyHorse 1.0 costs 28 credits per output second at 720p and 48 credits per output second at 1080p. The total price is the selected resolution rate multiplied by the requested output duration.
Use exactly 1 image for image-to-video or 2 to 9 images for reference video. Images must be JPEG, PNG, or WebP and no larger than 10 MB; single-image mode requires both dimensions to be at least 300 px, while reference mode requires the shortest side to be at least 400 px.
HappyHorse 1.0 on Rivya supports text-to-video, single-image animation, and multi-image reference video from one model page.
Choose 720p or 1080p and a 3 to 15 second duration. Aspect ratio is available for text-to-video and multi-image reference video; the prompt is optional only in single-image mode.
Use exactly 1 image for image-to-video or 2 to 9 images for reference video. Images must be JPEG, PNG, or WebP and no larger than 10 MB; single-image mode requires both dimensions to be at least 300 px, while reference mode requires the shortest side to be at least 400 px.
The page is public, but creating the actual video requires sign in. Current pricing is 28 credits per output second at 720p and 48 credits per output second at 1080p; the total is the rate multiplied by the requested output duration.
HappyHorse 1.0 on Rivya supports text-to-video, single-image animation, and multi-image reference video from one model page.
Compare alternatives
Create Seedance 2.5 videos from text, a start frame with an optional end frame, or image, video, and audio references. Choose 480p, 720p, or 1080p, a duration from 4 to 30 seconds or automatic duration, and an MP4 or MOV format request.
Why consider it
Input option: Up to 50 reference files
Generate video from text, a first frame, or media references.
Why consider it
Input option: Prompt, first frame with optional last frame, or image/video/audio references
ByteDance's Seedance 2.0 Fast video model for text prompts, a first frame with an optional last frame, or image, video and audio references. Choose 480p or 720p, set a 4–15-second duration, and request audio or a returned last frame.
Why consider it
Input option: Prompt, first frame with optional last frame, or image/video/audio references
