Providers and ModelsAlibaba Cloud

HappyHorse 1.1

HappyHorse 1.1
Alibaba Cloud · Video Generation
POST /v1/videos/generations

Text, image, and reference-to-video in one model. Cinematic motion, character consistency across up to 9 references, and synchronized native audio.

At a glance

FieldValue
Model idhappyhorse-1-1
Model release date2026-06-22
Input modalitiesText, Image
Output modalitiesVideo
Context window-
Weight precision-
RegionSingapore
Featuresvideo_generation, image_to_video, reference_to_video, audio_sync
Native inferenceNo
NewYes
Supported endpointsPOST /v1/videos/generations

Pricing

ChargeSpecRate
720pper second$0.14
1080pper second$0.18

Example request

$curl https://api.empiriolabs.ai/v1/videos/generations \
>  -H 'Authorization: Bearer $EMPIRIOLABS_API_KEY' \
>  -H 'Content-Type: application/json' \
>  -d '{"model": "happyhorse-1-1", "prompt": "sunrise over the ocean", "duration": 6}'

Parameters

ParameterTypeRequiredDefaultDescription
promptstringyes-Describe the scene to generate. Up to 2,500 characters.
modeenumno"auto"Auto detects from attachments. t2v: text-to-video. i2v: animate one image. r2v: reference-to-video from up to 9 images. · Allowed: auto, t2v, i2v, r2v
imagestringno-Image URL or upload. One image for image-to-video, up to 9 for reference-to-video. Reference them in the prompt as character1, character2.
aspect_ratioenumno"16:9"Aspect ratio of the output. Used by text-to-video and reference-to-video; image-to-video follows the source image. · Allowed: 16:9, 9:16, 1:1, 4:3, 3:4
resolutionenumno"720p"Output resolution. 720p renders faster; 1080p is higher fidelity. · Allowed: 720p, 1080p
durationnumberno5Clip length in seconds (3 to 15). · Range: 3 – 15
seednumberno-Reproducibility seed. Reuse the same seed for a repeatable result. · Range: 0 – 2147483647
watermarkbooleannofalseAdd a watermark to the generated video. Off by default.

Notes

Modes (in one model)

  • Text-to-video
  • Image-to-video
  • Reference-to-video (up to 9 images)

Constraints

  • 720p / 1080p, 3 to 15 seconds per generation
  • Prompt up to 2,500 characters

Aspect ratios

  • Text and reference modes: 16:9, 9:16, 1:1, 4:3, 3:4
  • Image-to-video follows the source image

Native audio is generated automatically.

Machine-readable schema: GET https://api.empiriolabs.ai/v1/models/happyhorse-1-1.