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Video Alibaba · 2026-06

HappyHorse 1.1 API

Alibaba video with addressable [Image 1] references and nine aspect ratios

720p$0.399per second
1080p$0.532per second

Failed generations are not charged. Prices exclude taxes. Billed from your prepaid USD balance.

Exact cost for your settings →

HappyHorse 1.1 is Alibaba's June 2026 update to HappyHorse. It generates 3-15 second clips at 720p or 1080p from text, one first-frame image, or 1-9 reference images. The main addition is addressable references: you name them in the prompt as [Image 1], [Image 2] and so on, which makes clear which character wears what and who does what. Nine aspect ratios, from 21:9 to 9:21, are available in text and reference modes. The rate depends only on resolution and duration.

Best for

  • Scenes with two or three distinct characters from reference photos
  • Ultra-wide 21:9 cinematic shots and tall 9:21 formats
  • Product placement using a product image plus a scene image
  • Feed videos in 4:5

Prompting tips

  • Refer to references explicitly: "[Image 1] hands the cup from [Image 2] to [Image 3]".
  • Prompts can be up to 5,000 characters in Latin scripts, or 2,500 in Chinese, Japanese or Korean.
  • Use image_url for image-to-video or image_urls for references, not both.
  • The default resolution is 720p, so set 1080p for finals.

FAQ

How much does HappyHorse 1.1 cost?

HappyHorse 1.1 is priced at from $0.399 per second. Only resolution and duration change the cost, and failed generations are not charged.

How long can HappyHorse 1.1 videos be?

From 3 to 15 seconds, at 720p or 1080p.

Does HappyHorse 1.1 edit existing videos?

No. Video restyling is available on HappyHorse 1.0.

How to call HappyHorse 1.1 via API

curl https://jantaris.com/v1/generate?wait=60 \
  -H "Authorization: Bearer $JANTARIS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "happyhorse-1.1",
  "input": {
    "prompt": "A slow dolly shot through a neon-lit night market in the rain, reflections on wet asphalt, cinematic",
    "aspect_ratio": "16:9",
    "resolution": "720p",
    "duration": 5
  }
}'

Parameters

ParameterTypeAllowedDefault
promptstring≤ 5000 chars
aspect_ratiostring16:9 9:16 3:4 4:3 4:5 5:4 1:1 9:21 21:916:9
resolutionstring720p 1080p720p
durationinteger3-155
image_urlstring
image_urlsarraymax 9

The same schema is available from GET /v1/models/happyhorse-1.1.