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HappyHorse 1.1
Use happyhorse-1.1 with a prompt of up to 2,500 characters. Set seconds to an integer from 3 to 15 and choose 720P or 1080P. Supported aspect_ratio values are 16:9, 9:16, 1:1, 4:3 and 3:4. For image-to-video, provide first_frame_image. For reference generation, provide one to nine image_urls. These two input forms are mutually exclusive. References must be publicly reachable image URLs. This contract does not accept source video, audio references or a caller-selected upstream model.
Send the request to https://api.snapgen.org/v1/videos with your Bearer key and a unique Idempotency-Key. Query GET /v1/tasks/{id} for the result. An image reference is optional; the first-frame form is:
Current launch prices are $0.26 per output second at 720P and $0.33 at 1080P. The requested duration and resolution determine the reservation. Availability and current pricing come from the Catalog; a missing channel is not silently replaced with another video model.