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HappyHorse 1.0 is Now on Segmind: Video with Native Audio in One Call

HappyHorse 1.0 generates cinematic 1080P video with synchronized audio, lip-sync, and multilingual support from a single API call.

Rohit Rao

• 1 min read
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AI video generation just got a serious upgrade. HappyHorse 1.0 is now live on Segmind, and it brings something most video models still lack: native audio generation, lip-sync across seven languages, and true 1080P output, all in a single API call.

What is HappyHorse 1.0?

HappyHorse 1.0 is Alibaba's unified video generation model, built on a 15-billion-parameter single-stream Transformer. It currently tops the Artificial Analysis Video Arena for both text-to-video and image-to-video generation. What makes it distinct: it produces synchronized audio, speech, and lip-synced motion in the same forward pass as the video. No separate audio pipeline, no post-production dubbing step.

What You Can Build

Marketing agencies can generate product launch videos, social ads, and branded clips at scale. A smartphone rotating in studio lighting, a coffee pour in slow motion, a fitness product in action: all producible from a text prompt, delivered in 720P for previews or 1080P for client delivery.

Film studios and VFX teams get a pre-visualization tool that handles cinematic prompts well. I tested it with nature documentary and sci-fi scenes, and the motion quality, color grading, and depth of field hold up for storyboarding and concept work.

Production houses and MCNs creating short-form content can generate vertical 9:16 clips optimized for TikTok, Reels, and Shorts. The multilingual lip-sync (English, Mandarin, Japanese, Korean, German, French, Cantonese) means localized talking-head content without separate dubbing passes.

See It in Action

Prompt used A majestic white horse galloping through golden wheat fields at sunset, cinematic slow motion, warm golden hour lighting, dust particles catching sunlight, shallow depth of field, professional nature documentary style

Parameters resolution: 720P  |  duration: 5s  |  aspect_ratio: 16:9  |  prompt_extend: on

HappyHorse 1.0 output: cinematic nature footage at 720P with smooth motion and warm color grading.

Get Started

HappyHorse 1.0 is available right now on the Segmind playground and via API. Here is all the code you need:

import requests

response = requests.post(
    "https://api.segmind.com/v1/happyhorse",
    headers={"x-api-key": "YOUR_API_KEY"},
    json={
        "prompt": "Your scene description here",
        "resolution": "720P",
        "duration": 5,
        "aspect_ratio": "16:9",
        "prompt_extend": True,
        "watermark": False
    }
)

with open("output.mp4", "wb") as f:
    f.write(response.content)

Pricing starts at $0.875 per video at 720P and $1.50 at 1080P. No subscriptions, no minimums. Try HappyHorse 1.0 on Segmind now.