Alibaba Cloud Bailian
Happy Horse 1.0
Text, image, reference video, and video edit — one Happy Horse 1.0 API call.
From $0.163 per second
HappyHorse 1.1 — Text, Image & Reference to Video
HappyHorse 1.1 by Alibaba turns text, a first-frame image, or up to nine reference images into 3–15s video. 720p or 1080p, nine aspect ratios, async endpoint.
Input
Optional in image-to-video · use bracket Image-N tags to cite references
Default 720p
Ignored in image-to-video
5
3 to 15 · default 5
Result
Try one of these prompts
What you can build with this model
Real-world workflows and production use cases you can build and ship with this model.
Animate any photo with HappyHorse 1.1
Pass a single first-frame image and a motion prompt. HappyHorse 1.1 returns a 3 to 15 second clip and reads orientation straight from the image — no aspect-ratio guesswork, no model swap.
Generate a clipCompose new scenes with HappyHorse 1.1 reference images
Send one to nine reference images alongside a prompt. HappyHorse 1.1 fuses subject, style, and props into a brand-new scene — cite specific frames with bracket Image-N tags for product shots, character reskins, and stylized social posts.
Ship social video from a single prompt
Describe the shot and HappyHorse 1.1 returns it in any of nine aspect ratios at 720p or 1080p. One endpoint covers Reels, Shorts, and TikTok without a storyboard or an edit timeline.
Pricing
Credit-based — 1 credit = $0.001 USD. Pay only for completed generations.
| Category | Unit | Price |
|---|---|---|
| Standard | ||
| 720P | 1 second | $0.182 182 credits |
| 1080P | 1 second | $0.242 242 credits |
Why reAPI
One endpoint, three modes
HappyHorse 1.1 auto-routes text-to-video, image-to-video, and reference-to-video by request shape. A prompt alone runs T2V, one first-frame image runs I2V, and one to nine reference images run R2V. No model swap, no second integration.
Pricing by resolution × seconds
HappyHorse 1.1 bills per-second by resolution. See the current 720p and 1080p rates in the pricing table on this page. The routing mode never changes the rate, and failed jobs refund automatically.
Sharper than the last release
Over version 1.0, HappyHorse 1.1 lands better prompt understanding, smoother motion, stronger subject consistency, and higher overall quality — so it holds a scene together across the full 3 to 15 second clip.
HappyHorse 1.1 vs Runway Gen-4
How HappyHorse 1.1 on reAPI compares to Runway Gen-4 for text, image, and reference-driven video.
Capability
HappyHorse 1.1 on reAPI
Runway Gen-4
Input modes
Text, image, and reference-to-video from one model id
Text and image-to-video
Reference images
Up to 9, with bracket Image-N citations in the prompt
Single reference image guidance
Resolution
720p and 1080p
Up to 1080p, plan-gated tiers
Clip length
3 to 15 seconds per request
5 or 10 second base clips, extendable
Pricing model
Per-second by resolution — routing mode is free
Credit packs tied to subscription plans
Access
OpenAI-style async endpoint, pay-as-you-go credits
First-party API plus web app, plan-based limits
Comparison reflects publicly documented Runway Gen-4 behavior as of mid-2026 and may change. Model details reflect this page.
Ship in three steps
- step 01
Create an API key
Sign up and grab a key from the dashboard. Free credits cover your first generations — no card required.
Open - step 02
Submit a video task
POST to /api/v1/videos/generations with model = happyhorse-1-1. The endpoint returns a task ID immediately.
Open - step 03
Poll the result
GET /api/v1/tasks/:id until status is completed. Download the output video and ship it.
Open
Frequently asked questions
Common questions about this model.
HappyHorse 1.1 is Alibaba's unified video generation model, served through one endpoint on reAPI. A single model id (happyhorse-1-1) auto-routes text-to-video, image-to-video, and reference-to-video based on which inputs the request carries.
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Try it in the playground or grab an API key to integrate now.