# Happy Horse 1.1 Happy Horse 1.1 is the latest version of Happy Horse AI (HappyHorse), Alibaba's video model, released on 23 June 2026. It does text-to-video, image-to-video and reference-to-video in one model. In Sloosh, Happy Horse 1.1 makes 3 to 15 second clips with sound at 720p or 1080p, from up to 9 reference images or a start frame. Web page: https://sloosh.ai/models/happy-horse-1.1 [Use Happy Horse 1.1](https://sloosh.ai/studio/video?video-model=happy-horse-1.1) ## Key facts in Sloosh | | | | --- | --- | | Made by | Alibaba | | Makes | video (with sound: always) | | Inputs | text, start frame (optional), no end frame, up to 9 reference images. A start frame and reference images can't be used together. | | Length | 3 to 15 seconds (whole seconds) | | Resolution | 720p, 1080p | | Aspect ratios | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9, 9:21, 5:4, 4:5 | | Prompt limit | 2,500 characters | ## Best for - Scenes with several subjects from reference images: Alibaba says 1.1 improves how it reads and combines multiple reference images for more consistent reference-to-video ([Alibaba Cloud](https://www.alibabacloud.com/blog/happyhorse-gets-stronger-motion-expressiveness-higher-generation-consistency-and-enhanced-visual-quality_603293)). - Complex action: Alibaba cites "smoother, more coherent, and visually striking movement in complex action sequences" ([Alibaba Cloud](https://www.alibabacloud.com/blog/happyhorse-gets-stronger-motion-expressiveness-higher-generation-consistency-and-enhanced-visual-quality_603293)). - Video with matched sound: Alibaba cites "precise audio-visual synchronization" ([Alibaba Cloud](https://www.alibabacloud.com/blog/happyhorse-gets-stronger-motion-expressiveness-higher-generation-consistency-and-enhanced-visual-quality_603293)). - Product marketing clips in many shapes, including 4:5 and 9:21; Alibaba markets it as "Product Marketing Ready" ([Alibaba Cloud](https://www.alibabacloud.com/en/campaign/happyhorse-video)). - Repeatable results with a fixed seed ([Alibaba Cloud](https://www.alibabacloud.com/help/en/model-studio/happyhorse-reference-to-video-api-reference)). ## How to use Happy Horse 1.1 in Sloosh 1. Open [Video in Studio](https://sloosh.ai/studio/video?video-model=happy-horse-1.1) with Happy Horse 1.1 in the model chip. 2. Add up to 9 reference images, or one start image. Not both. 3. Pick the length (3 to 15 seconds), 720p or 1080p, and the aspect ratio. 4. Optionally set a seed to repeat a result. 5. Write the prompt, naming each subject with its image number, and press Generate. The price shows first. ## Happy Horse 1.1 prompting tips - Refer to images by number in the order you added them, as Alibaba does with "[Image 1]", "[Image 2]" ([Alibaba Cloud](https://www.alibabacloud.com/help/en/model-studio/happyhorse-reference-to-video-api-reference)). - Name the object in each image when you refer to it, e.g. "the woman in a red qipao in [Image 1]" ([Alibaba Cloud](https://www.alibabacloud.com/help/en/model-studio/happyhorse-reference-to-video-api-reference)). - Use clear, high-resolution references; Alibaba recommends 720p or higher and warns against small, blurry or compressed images ([Alibaba Cloud](https://www.alibabacloud.com/help/en/model-studio/happyhorse-reference-to-video-api-reference)). - Fix the seed for more consistent results across runs; Alibaba notes it does not guarantee identical outputs ([Alibaba Cloud](https://www.alibabacloud.com/help/en/model-studio/happyhorse-reference-to-video-api-reference)). ## Happy Horse 1.1 example prompts **Prompt 1** ```text The woman in a red qipao from Image 1 opens the folding fan from Image 2 and turns toward the camera in a lantern-lit courtyard at night; the earrings from Image 3 catch the light. Slow push-in. Sound: soft guqin music, distant crowd. ``` **Prompt 2** ```text The skincare bottle from Image 1 sits on a bathroom shelf; a hand from the right picks it up and pumps serum onto the palm. 4:5, close-up, morning light. Sound: a soft pump click, running water. ``` **Prompt 3** ```text A golden retriever bounds across a snowy field toward the camera and leaps to catch a red ball. Low tracking shot, bright winter sun. Sound: paws in snow, a happy bark. ``` ## How it compares in Sloosh | | Happy Horse 1.1 | Grok Imagine | Grok Imagine 1.5 | | --- | --- | --- | --- | | Length | 3 to 15 s | 4 to 10 s | 4 to 15 s | | References | 9 images | 7 images | 14 images | | Frames | start only, not with references | start only, not with references | start and end | | Resolution | 720p, 1080p | 480p, 720p | up to 1080p | | Seed | yes | no | no | ## Where else it runs - happyhorse.com and the Alibaba Cloud Model Studio API ([Alibaba Cloud](https://www.alibabacloud.com/blog/happyhorse-gets-stronger-motion-expressiveness-higher-generation-consistency-and-enhanced-visual-quality_603293), 23 Jun 2026). ## Frequently asked questions ### What is Happy Horse AI? HappyHorse is Alibaba's video generation model. Version 1.1, from 23 June 2026, does text-to-video, image-to-video and reference-to-video in one model. ### What's new in Happy Horse 1.1? Alibaba cites better motion, more consistent reference-to-video, richer visual detail and precise audio-visual sync ([Alibaba Cloud](https://www.alibabacloud.com/blog/happyhorse-gets-stronger-motion-expressiveness-higher-generation-consistency-and-enhanced-visual-quality_603293)). ### How many reference images does Happy Horse 1.1 take? Up to 9, in Sloosh and in Alibaba's API. ### How long can a Happy Horse 1.1 video be? 3 to 15 seconds. ### Does Happy Horse 1.1 make sound? Yes, every clip has sound in Sloosh. ### Can I use a start frame with references? No. In Sloosh you choose either a start image or reference images. There is no end frame. ### How do I use Happy Horse 1.1? Open Video in Studio, pick Happy Horse 1.1, add references or a start image, write the prompt and press Generate. ## Related - Models: [Grok Imagine](https://sloosh.ai/models/grok-imagine), [Grok Imagine 1.5](https://sloosh.ai/models/grok-imagine-1.5), [Kling O3](https://sloosh.ai/models/kling-o3) - Spaces: [Product in Hand (UGC)](https://sloosh.ai/spaces/product-in-hand-ugc) - Answers: [How do I make UGC-style product-in-hand videos with AI?](https://geo.sloosh.ai/posts/how-do-i-make-ugc-style-product-in-hand-videos-with-ai) ## Sources - [Alibaba Cloud: HappyHorse 1.1 upgrade](https://www.alibabacloud.com/blog/happyhorse-gets-stronger-motion-expressiveness-higher-generation-consistency-and-enhanced-visual-quality_603293) - [Alibaba Cloud: HappyHorse reference-to-video API](https://www.alibabacloud.com/help/en/model-studio/happyhorse-reference-to-video-api-reference) - [Alibaba Cloud: HappyHorse image-to-video API](https://www.alibabacloud.com/help/en/model-studio/happyhorse-image-to-video-api-reference) - [Alibaba Cloud: Happy Horse-1.1 campaign page](https://www.alibabacloud.com/en/campaign/happyhorse-video)