AlibabaReleased on Apr 24, 2026

Happy Horse 1.0: Benchmarks, Pricing & Context Window

Happy Horse 1.0 is a video generation model from Alibaba, released in April 2026.

Alibaba's Happy Horse 1.0 - image-to-video animation and instruction-based video editing (V2V). Animate a still first-frame image, or edit a source video with natural language prompts using up to 5 reference images. Supports 720p and 1080p

Input
TextImageVideo
Output
Video

Happy Horse 1.0 examples

Recent arena outputs from Happy Horse 1.0, picked from the highest-ranked matchups.

Happy Horse 1.0 API

POST/v1/generations

Image-to-video start frame.

Run a request to see the response

Use it in your code

OpenAI-compatible endpoint through the LLM Stats gateway.

import requests

# Create the generation. wait="auto" long-polls (up to 60s) so most short
# jobs return as "completed" in a single round-trip.
res = requests.post(
    "https://gateway.llm-stats.com/v1/generations",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
        "model": "happyhorse-1.0",
        "input": {"prompt": "A timelapse of clouds moving across the sky"},
        "wait": "auto",
    },
)
job = res.json()

# If it didn't finish inside the wait window, poll the same resource.
while job["status"] in ("queued", "running"):
    res = requests.get(
        f"https://gateway.llm-stats.com/v1/generations/{job['id']}",
        params={"wait": 60},
        headers={"Authorization": "Bearer YOUR_API_KEY"},
    )
    job = res.json()

if job["status"] == "completed":
    print("video:", job["output"]["media"][0]["url"])
else:
    print("Failed:", job["error"]["message"])

Need an API key? Create one above in the playground, or read the API documentation.

Happy Horse 1.0 pricing

Providers

Happy Horse 1.0 starts at $0.140 per second of 720p video via Replicate. See all 2 providers below with per-resolution pricing, latency, and modality support.

Provider720p $/s1080p $/sLatency sInputOutput
Replicate logoReplicate
$0.140$0.280
Fal logoFal
$0.140$0.280

Happy Horse 1.0 benchmarks

Video Arena Performance

Performance by category and language

Where Happy Horse 1.0 is strongest across prompt themes and languages. Conservative TrueSkill score (μ − 3σ), only axes with 3+ votes.

Leaderboard Rankings

Quality Tracker

Similar Models

How Happy Horse 1.0 compares to its closest neighbors on each video arena it competes in.

Notice missing or incorrect data?

Happy Horse 1.0 license

Happy Horse 1.0 is released under the Apache 2.0 license, which permits commercial use.

License
Apache 2.0
Commercial use allowed

Apache License 2.0 - allows commercial use

Models like Happy Horse 1.0

Other video models ranked closest to Happy Horse 1.0.

FAQ

Common questions about Happy Horse 1.0.

Who created Happy Horse 1.0?

Happy Horse 1.0 was created by Alibaba.

What is the license for Happy Horse 1.0?

Happy Horse 1.0 is released under the Apache 2.0 license. This is an open-source/open-weight license.

Is Happy Horse 1.0 multimodal?

Yes, Happy Horse 1.0 is a multimodal model that can process both text and images as input.