New
HappyHorse 1.1AI video generator
Alibaba's video model with its own sound and lip-synced speech, at 720p or 1080p, from text or a first frame. On Leap, it sits beside 169 other models in one studio.
- Text to video
- Image to video
- Up to 15 s
- Up to 1080p
- 9 aspect ratios
- Start free, no card
- Every top model, one account
- Pay per run, priced before it starts
AI video generator
HappyHorse 1.1 at a glance
HappyHorse 1.1 is a video model from Alibaba. It makes video from words or a first frame, 3 to 15 seconds long, at up to 1080p.
- Made by
- Alibaba
- Makes
- Video
- Starts from
- Words or a first frame
- Length
- 3 to 15 seconds
- Resolution
- 720p or 1080p
- Shapes
- 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, 9:21, 5:4, 4:5
- Prompt
- Up to 2,500 characters
- Price per run
- $0.462 to $2.97
- On Leap since
- October 5, 2026
- Updated
- October 5, 2026
- 01Describe it, or start from a photo
- 02See the exact price, then press go
- 03Keep it in your library, or take it further
Pick the right one
HappyHorse 1.1 and its siblings
| Model | Best for | Length | Resolution | Price per run |
|---|---|---|---|---|
| HappyHorse 1.1 (this page) | Alibaba's video model with its own sound and lip-synced speech, at 720p or 1080p, from text or a first frame. | 3 to 15 seconds | Up to 1080p | $0.462 to $2.97 |
| HappyHorse Video Edit | Edits a video of up to 15 seconds from a prompt and up to four reference images, keeping its motion. Keep the original sound, or let the model decide whether to make new sound. Billed by the length of the video. | – | Up to 1080p | $0.616 a second of your video |
Start with an idea
Three ways to try HappyHorse 1.1
Side by side
More video models on Leap
No prompt needed
Or start from a recipe
Recipes write the prompt for you: add a photo, pick a look, and get a finished result.
Questions
HappyHorse 1.1, answered
- What is HappyHorse 1.1?
- HappyHorse 1.1 is a video model from Alibaba. Alibaba's video model with its own sound and lip-synced speech, at 720p or 1080p, from text or a first frame. On Leap it runs in one studio beside every other top model, with one account.
- Can HappyHorse 1.1 start from a photo?
- Yes. HappyHorse 1.1 starts from words or a first frame. The photo becomes the first frame, cropped to the video's shape.
- How long can the videos be?
- 3 to 15 seconds. You choose the length before you press go, and the price follows it.
- What resolution and sizes does it make?
- Up to 1080p, in 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, 9:21, 5:4 or 4:5.
- How is it different from HappyHorse Video Edit?
- HappyHorse 1.1: Alibaba's video model with its own sound and lip-synced speech, at 720p or 1080p, from text or a first frame. HappyHorse Video Edit: Edits a video of up to 15 seconds from a prompt and up to four reference images, keeping its motion. Keep the original sound, or let the model decide whether to make new sound. Billed by the length of the video. They all run in the same studio, so you can try one prompt on each.
- How much does a run cost?
- A 5-second 1080p clip costs $0.99 at the default settings. By length and resolution, a run costs $0.462 to $2.97. You see the exact price before you press go, and a run that fails costs nothing.
- Is HappyHorse 1.1 free to try?
- Yes. Sign up with a Gmail, Outlook or work address and you start with $2 of free credit, no card needed. The cheapest run is $0.462 (a 3-second 720p clip), so the credit covers four of those. After that you pay per run, in dollars, with no subscription.
- Can I use what I make commercially?
- Yes. You own what you make on Leap, so you can use it commercially, and we never train AI on it. The people and brands shown in a result can still have rights in it; the Terms say more.
- Is there an API?
- Yes. Leap's REST API runs it as alibaba/happy-horse-1.1, at the same price per run as the studio, and agents can call it through Leap's MCP server. The request is at the bottom of this page.
- Do I need an Alibaba account?
- No. Leap sends your request to Alibaba's model and gives you what it makes. One Leap account runs HappyHorse 1.1 and every other model, in the studio, through the API and from your agents.
Your idea, HappyHorse 1.1.
Start free, no card. Every run shows its price before it starts.
Make it with HappyHorse 1.1For developers
Run HappyHorse 1.1 from code
- Model ID
- alibaba/happy-horse-1.1
- Makes
- Video
- Pricing
- Per run, quoted first: POST /v1/quotes
Inputs
What the model takes. Leave out anything with a default.
Promptprompt
Text, up to 2,500 characters, required
First framefirst_frame
An imageAn image the video starts from. It is cropped to the video's shape.
Aspect ratioaspect_ratio
16:9, 9:16, 1:1, 4:3, 3:4, 21:9, 9:21, 5:4, 4:5. Default: 16:9
Durationduration
3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 s, required. Default: 5 s
Resolutionresolution
720p, 1080p. Default: 1080p
Seedseed
0 to 4294967295The same seed and input give the same image.
The request
The same envelope for every model; only the model and its input change. With prefer: wait=60 the answer holds the result when the run finishes within a minute; a longer one is read again by its ID. Agents can call it through the MCP server at app.tryleap.ai/api/mcp.
curl https://api.tryleap.ai/v1/generations \ -H "x-api-key: $LEAP_API_KEY" \ -H "content-type: application/json" \ -H "prefer: wait=60" \ -d '{ "model": "alibaba/happy-horse-1.1", "input": { "prompt": "A paper boat drifting down a rainy street at dusk" } }' # Video often outlasts the wait and answers "queued" or "running".# Put its "id" in GENERATION_ID and read it again until it is done:# curl https://api.tryleap.ai/v1/generations/$GENERATION_ID -H "x-api-key: $LEAP_API_KEY"