happy-horses.io

What is happy-horses.io

HappyHorse is an open-source AI video generator that creates 1080p video and synchronized audio in a single pass. It is ranked #1 on the Artificial Analysis Arena for its advanced unified audio-video architecture.

How to use happy-horses.io

1. Start Generating: Navigate to the "Start Generating" button on the homepage.
2. Choose Generation Type: Select "Image To Image" or "Text To Image" (though the primary focus appears to be video generation).
3. Select Model: Choose a model, such as "Nano Banana 2".
4. Upload Image (for Image-to-Image): Drag and drop an image or click to upload. You can also doodle/edit the uploaded image.
5. Enter Prompt: Describe the desired video or image transformation in the prompt field.
6. Configure Settings: Adjust output format, aspect ratio, and output number as needed.
7. Generate: Click the "Generate Image" or "Generate Video" button.

Features of happy-horses.io

• Unified Transformer Architecture: A 15B-parameter, 40-layer single-stream Self-Attention Transformer processes text, video, and audio tokens simultaneously.
• Joint Audio-Video Generation: True end-to-end audio-video joint pre-training from scratch, generating dialogue, ambient sound, and Foley effects alongside video.
• 8-Step Fast Inference: DMD-2 distillation reduces denoising to 8 steps without Classifier-Free Guidance, accelerated by the MagiCompiler runtime.
• Native 1080p / 2K Output: Generates high-resolution video up to 2K cinema-grade quality, with an optional super-resolution module for upscaling.
• 7-Language Lip-Sync: Natively supports Mandarin, Cantonese, English, Japanese, Korean, German, and French with a low word error rate.
• Text-to-Video & Image-to-Video: A unified pipeline handles both T2V and I2V tasks.
• Multi-Shot Narrative: Advanced motion synthesis for videos with realistic motion, seamless transitions, and strong prompt adherence.
• Fully Open Source: Base model, distilled model, super-resolution module, and inference code are released under a commercial-friendly license.
• Diverse Aesthetic Styles: Supports photorealistic, anime, cyberpunk, watercolor, cinematic, and more.

Use Cases of happy-horses.io

• Short Film Production: Eliminating post-dubbing pipelines for faster creation.
• Video Advertising: Producing multiple video ads for different markets with multilingual lip-sync.
• Game Development: Prototyping cutscenes with various visual styles.
• Content Creation: Generating engaging video content for social media and other platforms.
• Marketing Campaigns: Creating localized video content without reshooting.

Pricing

HappyHorse offers several plans billed annually or monthly, with discounts for annual subscriptions:

• Pro: $14.92/mo (billed annually), includes 6,000 credits/year, priority generation, and commercial use license.
• Basic: $7.42/mo (billed annually), includes 1,800 credits/year, standard generation speed, and limited commercial use license.
• Max: $37.40/mo (billed annually), includes 18,000 credits/year, faster generation, API access, and team features.
• Ultra: $60.08/mo (billed annually), includes 36,000 credits/year, fastest generation priority, API access, and advanced team features.

Note: Prices are based on annual billing, with monthly and one-time purchase options also available. A price increase is noted as coming soon.

FAQ

• What is HappyHorse 1.0? HappyHorse 1.0 is a 15-billion parameter open-source AI model that jointly generates video and synchronized audio from text or image prompts, built on a unified Transformer architecture.
• How does HappyHorse compare to other video models? It ranks #1 on the Artificial Analysis Video Arena, surpassing competitors like Seedance 2.0, Kling 3.0, and PixVerse V6 in blind user testing.
• Is HappyHorse truly open source? Yes, the base model, distilled model, super-resolution module, and inference code are released with commercial-use rights.
• What languages does the lip-sync feature support? It natively supports Mandarin, Cantonese, English, Japanese, Korean, German, and French with a low word error rate.
• What hardware do I need to run HappyHorse? High-performance GPUs like NVIDIA H100 or A100 (48GB+ VRAM recommended) are advised. FP8 quantization and 8-step checkpoints reduce memory requirements.
• What video resolution and duration does it support? It generates native 1080p to 2K cinema-grade video, typically 5–10 seconds long, with an optional super-resolution module.
• Can I use HappyHorse for commercial projects? Yes, it is released under a commercial-friendly license, allowing free use of generated content for personal and commercial purposes.
• What visual styles are supported? It supports a wide range of styles including photorealistic, anime, cyberpunk, watercolor, and cinematic.
• How fast is the generation? Thanks to DMD-2 distillation and the MagiCompiler runtime, video clips can be generated in seconds on supported hardware.
• Is there an API available? Yes, a RESTful API is available for integration, with setup in under 5 minutes and sub-10-second generation times.