Happyhorse-1.0 API

What is Happyhorse-1.0 API

HappyHorse 1.0 is a unified multimodal video generation model developed by Alibaba's ATH-AI. It generates 1080p video and native audio simultaneously in a single forward pass, supporting lip-sync for 7 languages. It ranked first in both text-to-video and image-to-video categories on Artificial Analysis.

How to use Happyhorse-1.0 API

1. Register for an APIMart account.
2. Recharge your account to start using the service.
3. Create an API Key in the control panel for authentication.
4. Make a POST request to /v1/videos/generations with your APIMart API Key, the model name happyhorse-1.0, and your prompt.

Features of Happyhorse-1.0 API

• Unified Multimodal Transformer: Generates video and native audio simultaneously in a single forward pass.
• Native Audio Generation: Audio is generated in sync with the video, eliminating the need for separate TTS or post-synthesis.
• 7-Language Lip-Sync: Supports English, Mandarin, Cantonese, Japanese, Korean, German, and French with sub-pixel lip-sync accuracy.
• 1080p Native Output: Produces broadcast-quality 1080p video without upscaling.
• Optimized for Vertical Video & Dialogue: Specifically optimized for short videos and dialogue-heavy content.
• Fast Generation: Generates a 1080p video in approximately 38 seconds on a single NVIDIA H100 GPU.
• Top Performance: Ranked first in text-to-video and image-to-video on Artificial Analysis.

Use Cases of Happyhorse-1.0 API

• Multilingual Advertising: Create ad creatives for different regions with synchronized lip-sync in 7 languages.
• Short-Form Video Production: Efficiently produce dialogue-focused content for platforms like TikTok and Reels.
• Spokesperson & Endorser Videos: Generate videos with perfect audio-visual synchronization for product explanations or endorsements.
• Storyboard & Pre-visualization: Create multi-shot previews with temporary dialogue and sound for film, animation, and game CG.
• Localized Online Education: Produce multilingual versions of courses with synchronized lip-sync to accelerate internationalization.
• Overseas Brand Content: Quickly create localized video marketing materials for global brands.

Pricing

Pricing is based on usage, with per-second billing. Specific pricing details are available in the pricing section of the page.

FAQ

• What is HappyHorse 1.0? It's a video generation model from Alibaba ATH-AI that simultaneously generates 1080p video and native audio with lip-sync.
• What parameters does HappyHorse 1.0 accept? Key parameters include: model (happyhorse-1.0), prompt (up to 2500 characters), resolution (720P or 1080P), duration (3-15 seconds), aspect_ratio (for text-to-video), and optional seed and watermark. Image inputs switch to image-to-video mode.
• How does HappyHorse 1.0's audio generation differ? It generates audio and video in a single Transformer, achieving sub-pixel lip-sync accuracy and natural audio-visual synchronization, unlike models that add audio separately.
• Which languages does the lip-sync feature support? It supports English, Mandarin, Cantonese, Japanese, Korean, German, and French.
• How fast is HappyHorse 1.0? It generates a 1080p video in about 38 seconds on a single H100 GPU, using an 8-step sampling process.
• How does it compare to other models? It ranks first in Artificial Analysis text-to-video and image-to-video benchmarks. It excels in native audio generation and lip-sync compared to models like Sora 2 and Veo 3.1, and offers better dialogue and lip-sync performance than Kling.
• What is the price? Refer to the pricing section for per-second billing details. Recharge your APIMart account to use the service.
• How to integrate quickly? Send a POST request to /v1/videos/generations with your API Key, model name happyhorse-1.0, and prompt. See API documentation for examples.