HappyHorse on Genosai — video with audio and lip-sync
HappyHorse is Alibaba's video model, available on Genosai for image-to-video with sound. It is built on a unified transformer of about 15 billion parameters, jointly synthesizes audio and video, and does synced lip-sync in 7 languages. The model outputs clips at 720p and 1080p up to 15 seconds long. On Genosai it runs online, with no API setup — generation costs from 22 credits per second.
Updated: July 7, 2026
- Audio with video — A unified architecture jointly synthesizes audio and picture: speech, effects and music in one pass.
- Lip-sync in 7 languages — Synced articulation in English, Mandarin, Cantonese, Japanese, Korean, German and French.
- Up to 1080p resolution — The model generates at 720p and 1080p at up to 30 frames per second.
- Image-to-video — Animates an uploaded frame with prompt-driven motion, keeping the source composition.
- Flexible formats — Duration from 2 to 15 seconds and aspect ratios 16:9, 9:16, 1:1, 4:3 and 3:4.
Contents
- What is HappyHorse
- Capabilities
- Examples
- How to use on Genosai
- Prompts
- Generation cost
- Comparison
- Limitations and tips
- FAQ
What is HappyHorse
HappyHorse is Alibaba's video model, available on Genosai for image-to-video with sound. It appeared in 2026 and quickly climbed to the top of blind video-generation rankings, after which the developer revealed its authorship. The model stands out because it was designed from the start as a single solution for picture and sound, rather than a generator of a video track alone.
Technically HappyHorse is built on a unified transformer of about 15 billion parameters with 40 layers of self-attention. The architecture natively processes text, image, video and audio tokens and jointly synthesizes audio and video in one pass. From this grows the model's strength — synced lip-sync in seven languages: English, Mandarin, Cantonese, Japanese, Korean, German and French. This lets you assemble multilingual talking scenes with no separate dubbing.
By the numbers, the model generates at 720p and 1080p at up to 30 frames per second. Clip length is configurable from 2 to 15 seconds, and among aspect ratios it offers 16:9, 9:16, 1:1, 4:3 and 3:4 — for landscape, vertical and square. This set of formats covers both talking clips and short social scenes.
On Genosai the image-to-video variant is connected: the model animates an uploaded frame, and motion and sound are set by the prompt. You do not need a developer account, API keys or your own infrastructure — just open the video studio in the browser, upload a frame and describe the scene. HappyHorse suits authors of multilingual content, marketers and anyone who needs a talking scene with sound from a finished image.
Capabilities
HappyHorse gives a short clip with sound and synced speech from a finished frame. Here is what the model does in practice.
Joint synthesis of audio and video
The unified architecture processes text, image, video and audio as a single set of tokens and generates sound together with the picture in one pass. It is speech, sound effects and background music, synced to the image. A short voiced scene can be produced whole, with no separate audio editing step.
Lip-sync in seven languages
The model's strength is synced articulation in English, Mandarin, Cantonese, Japanese, Korean, German and French. HappyHorse carefully matches lip movement to speech, so talking scenes look natural. This is handy for multilingual content where articulation matters, not just subtitles.
Resolution and duration
The model generates at 720p and 1080p at up to 30 frames per second. Clip length is configurable from 2 to 15 seconds, and aspect ratios 16:9, 9:16, 1:1, 4:3 and 3:4 let you assemble the frame straight for the target platform. For a sharp talking scene take 1080p, and for volume drafts, 720p.
Image-to-video
On Genosai the model works from an image: you upload a frame, describe motion and lines, and HappyHorse animates it into a short clip. The model keeps the source composition and builds motion around the character, so the result is closer to a "living photo" with speech than to generation from scratch.
Flexible formats
The set of aspect ratios and configurable duration make the model versatile for different platforms. A vertical clip for social, a horizontal scene or a square are assembled in one interface, and the length is chosen to fit the line and scene.
Examples
There is no demo gallery for HappyHorse on Genosai yet, so instead of ready clips we describe the typical scenarios the model is built for. The first scenario is a talking scene from a portrait: you upload a frame with a person, set a line, and the model animates it with synced lip-sync and sound.
The second scenario is a multilingual clip: the same scene is assembled with articulation in English, Japanese or German with no separate dubbing. The third scenario is animating a frame with sound: a product photo or scene gets camera motion and a sound accent in one pass. The fourth scenario is a vertical clip for social at 720p, when volume and format matter more than maximum resolution. In all cases an uploaded frame is the starting point, and motion, speech and sound are set by the prompt.
How to use on Genosai
Launching HappyHorse on Genosai requires no setup: everything happens in the browser and the model is already connected. The basic path from a frame to a finished clip looks like this.
- Sign in to your Genosai account and open the video studio.
- Pick HappyHorse in the model list.
- Upload a source frame for image-to-video.
- Describe the motion and, if needed, the character's line with the language specified.
- Choose a resolution up to 1080p, a duration up to 15 seconds and the aspect ratio, then run the generation.
- Download the clip or refine the prompt and regenerate.
Prompts
These templates show how to phrase tasks for HappyHorse. Replace the text in square brackets with your own data and add details on motion, speech and sound — the model takes them into account when generating.
Talking scene: animate the frame [character], line [text] in English, lip sync, lively expression, 1080p.Multilingual clip: [character] delivers [text] in Japanese, natural articulation, quiet ambient.Image-to-video with sound: animate the frame [description], soft camera move, a light sound accent, 720p.Product clip: [item] on [background], slow turnaround, clean light, a short sound effect, 1080p.Vertical 9:16 clip: [story], dynamic frame, energetic music, a line at the end, 10 seconds.Two-language dialogue: [character] speaks [text] in German, then in French, lip sync.Atmospheric scene: animate the frame [description], soft light, background music, smooth motion, 720p.Generation cost
On Genosai the cost of HappyHorse is counted per second of the clip and depends on resolution: about 22 credits per second at 720p and 40 credits at 1080p. So a ten-second clip at 1080p costs about 400 credits, and at 720p noticeably less. Since the model combines picture, sound and lip-sync in one pass, you get a voiced scene without a separate audio generation.
You pay for actual generations, with no monthly subscription, so the spend is easy to plan for the amount of work. Starter credits after sign-up let you try HappyHorse for free. Current packages and balance are in the Pricing section.
Comparison
HappyHorse is the choice when you need a talking scene with sound and synced lip-sync in several languages. If clean image-to-video without an emphasis on speech matters more, look at Hailuo 2.3; speed and sound in a short clip are covered by Grok Imagine 1.5. Expressive motion comes from Kling 2.5 Turbo, and the cheapest option for volume drafts is Seedance V1 Lite.
| Model | Strength | Price on Genosai |
|---|---|---|
| HappyHorse | Sound and lip-sync in 7 languages | from 22 credits/sec |
| Hailuo 2.3 | Quality i2v at 1080p | from 45 credits |
| Grok Imagine 1.5 | Speed and sound | from 12 credits/sec |
| Kling 2.5 Turbo | Expressive motion | 5 sec=42 credits |
| Seedance V1 Lite | Cheapest, no audio | from 2 credits/sec |
All models are available in one Genosai interface, so you can compare them on your own scene and pick the best by price and quality. A practical approach is HappyHorse for talking and multilingual scenes, and cheaper models for silent clips and volume.
Limitations and tips
HappyHorse on Genosai works in image-to-video mode, so you need a source frame to start — a clip cannot be built from a pure text description. Length is capped at 15 seconds, so do not count on long scenes from one generation. Exact limits and parameters may depend on the studio — rely on the actual result.
The model's strength is speech, so phrase the line explicitly and specify one of the seven supported languages. Keep the phrase short so it fits the duration and syncs naturally to the lips. For a multilingual series use one source frame and change only the text and language of the line.
Like any i2v, HappyHorse is sensitive to the quality of the source frame. Upload a sharp image with a clear composition and a well-visible face if you need a talking scene — the accuracy of the lip-sync depends on it. For 1080p budget a higher credit spend, and drafts are more convenient at 720p.
FAQ
What is HappyHorse and who built it?
HappyHorse is Alibaba's video model, released in 2026. It is built on a unified transformer of about 15 billion parameters and jointly synthesizes audio and video. On Genosai the model is available online with no separate subscription and no API setup.
How much does a HappyHorse clip cost on Genosai?
The price is counted per second of the clip: about 22 credits per second at 720p and 40 at 1080p. You pay for actual generations, with no monthly subscription. Current packages are in the Pricing section.
Does HappyHorse generate audio?
Yes. The unified architecture natively processes text, image, video and audio tokens and jointly synthesizes sound with the picture. It is speech, effects and music in one pass, with synced lip-sync in several languages.
What languages does HappyHorse lip-sync support?
The model supports synced articulation in seven languages: English, Mandarin, Cantonese, Japanese, Korean, German and French. This lets you assemble multilingual talking scenes with no separate dubbing.
What resolutions and durations does HappyHorse support?
The model generates at 720p and 1080p at up to 30 frames per second. Clip length is configurable from 2 to 15 seconds, with aspect ratios 16:9, 9:16, 1:1, 4:3 and 3:4. Exact parameters may depend on the studio.
Does HappyHorse work from an image?
On Genosai the image-to-video variant is connected: the model animates an uploaded frame, and motion and sound are set by the prompt. So you need a source frame to start. The motion and line description itself is still written in text.