Happy Horse 1.0 — The #1 Open-Source AI Video Generator
Turn any idea into stunning AI videos instantly. Blazing fast, multilingual, fully open source.
15B-parameter SOTA AI video generator with native joint audio-video synthesis. Powered by a unified 40-layer self-attention Transformer with DMD-2 distillation — only 8 denoising steps needed. Generate 1080p videos in ~38 seconds. Supports 7 languages with ultra-low WER lip-sync.
1080p
Quality
~38s
Generation
7
Lip-Sync Languages
Free
Get Started
CORE TECHNOLOGY
What Makes Happy Horse 1.0 the World's Leading Open-Source AI Video Generator?
15B-parameter unified 40-layer self-attention Transformer, native joint audio-video synthesis, and ultra-low WER lip-sync in 7 languages. DMD-2 distillation requires only 8 denoising steps. 1080p generation in ~38 seconds. Fully open source.
Native Audio-Video Sync
Joint generation produces perfectly synchronized dialogue, ambient sounds, and Foley effects.
7-Language Lip-Sync
Ultra-low WER lip-sync in English, Mandarin, Cantonese, Japanese, Korean, German, French.
Creation Pipeline
From prompt to 1080p video with native audio — in ~38 seconds on H100.
Unified Transformer Architecture
A single 40-layer self-attention Transformer processes text, image, video, and audio tokens in one unified sequence. Sandwich architecture with modality-specific layers at start/end and 32 shared-parameter layers in the middle. Per-head gating enables seamless multimodal fusion.
15B Params / 40 Layers / Unified
DMD-2 Distillation + MagiCompiler
DMD-2 distillation reduces denoising to just 8 steps without CFG. Timestep-free denoising and MagiCompiler accelerated inference deliver ~2s for 5-second 256p video, ~38s for 1080p on H100. The fastest open-source AI video model available.
8 Steps / ~38s 1080p / Open Source
Happy Horse 1.0 TECHNICAL ADVANTAGES
Why Choose Happy Horse 1.0?
15B-parameter unified Transformer with native joint audio-video synthesis. DMD-2 distillation (8 steps only), MagiCompiler accelerated inference (~38s for 1080p), 7-language ultra-low WER lip-sync. Fully open source.
Blazing Fast: ~38s for 1080p
DMD-2 distillation reduces denoising to just 8 steps without CFG. MagiCompiler accelerated inference delivers ~2s for 5-second 256p video, ~38s for 1080p on H100.
- ✓1080p in ~38 seconds
- ✓Only 8 denoising steps
- ✓MagiCompiler acceleration
Native Joint Audio-Video Synthesis
Single unified 40-layer self-attention Transformer generates video and audio together in one pass. Perfectly synchronized dialogue, ambient sounds, and Foley effects.
- ✓Joint audio-video generation
- ✓40-layer unified Transformer
- ✓Perfect audio-video sync
7-Language Ultra-Low WER Lip-Sync
Native support for English, Mandarin, Cantonese, Japanese, Korean, German, and French. Ultra-low Word Error Rate ensures natural, accurate lip movements.
- ✓7 languages supported
- ✓Ultra-low WER accuracy
- ✓Natural lip movements
Fully Open Source & Customizable
Complete open-source release: base model, distilled model, super-resolution module, and inference code. Self-host on your infrastructure. Fine-tune for custom use cases.
- ✓Base + distilled models open
- ✓Self-hosting supported
- ✓Fine-tuning enabled
~38s 1080p
Generation Speed
15B Params
Model Size
7 Languages
Lip-Sync Support
Open Source
Fully Open
WHAT PEOPLE ARE SAYING
Hear From Creators Who Love Happy Horse 1.0
Thousands of filmmakers, content creators, and studios trust Happy Horse 1.0 to bring their visions to life. Join 10,000+ creators already using Happy Horse 1.0 worldwide.
“Happy Horse completely transformed our marketing workflow. The video generation speed is unmatched.”
Sarah L.
Marketing Director
“The lip-sync accuracy across different languages is mind-blowing. It saved us weeks of localization work.”
David C.
Content Creator
“We use the image-to-video feature daily for our e-commerce products. Highly recommended!”
Emily R.
E-commerce Owner
“As an indie filmmaker, having a tool that generates consistent characters and native audio is a game changer.”
Michael T.
Director
“The 1080p quality and physics simulation are incredibly realistic. Best AI video tool on the market.”
Jessica W.
VFX Artist
“Fast, reliable, and the API integration was seamless. Our team loves Happy Horse.”
Kevin B.
Tech Lead
“Happy Horse completely transformed our marketing workflow. The video generation speed is unmatched.”
Sarah L.
Marketing Director
“The lip-sync accuracy across different languages is mind-blowing. It saved us weeks of localization work.”
David C.
Content Creator
“We use the image-to-video feature daily for our e-commerce products. Highly recommended!”
Emily R.
E-commerce Owner
“As an indie filmmaker, having a tool that generates consistent characters and native audio is a game changer.”
Michael T.
Director
“The 1080p quality and physics simulation are incredibly realistic. Best AI video tool on the market.”
Jessica W.
VFX Artist
“Fast, reliable, and the API integration was seamless. Our team loves Happy Horse.”
Kevin B.
Tech Lead
Happy Horse 1.0 TUTORIAL
How to Create AI Videos in 4 Simple Steps
Master Text-to-Video and Image-to-Video with Happy Horse 1.0. Follow this guide to create 1080p videos with native joint audio-video synthesis and 7-language lip-sync.
Describe Your Story or Upload an Image
Enter a text prompt describing your scene — characters, mood, dialogue, and audio. Or upload a photo for Image-to-Video with high physical realism.
Choose Resolution and Aspect Ratio
Select output resolution up to 1080p and choose from multiple aspect ratios (16:9, 9:16, 4:3, 21:9, 1:1). The model supports 5-8 second video clips with native joint audio generation.
Select Audio Language for Lip-Sync
Choose your lip-sync language from 7 supported languages: English, Mandarin, Cantonese, Japanese, Korean, German, and French. Ultra-low WER ensures natural, accurate lip movements.
Generate 1080p Video in ~38 Seconds
Click Generate. The 15B-parameter unified Transformer with DMD-2 distillation generates 1080p video and audio jointly — synchronized dialogue, ambient sounds, and Foley in ~38 seconds on H100. Fully open source.
OPEN-SOURCE SOTA AI VIDEO
Why Happy Horse 1.0 Is the Best Open-Source AI Video Generator in 2026
The #1 open-source SOTA AI video generator with native joint audio-video synthesis. 15B-parameter unified Transformer, DMD-2 distillation (8 steps), 1080p in ~38 seconds, 7-language lip-sync.
Fully open source model (base model, distilled model, super-resolution module, inference code). Self-host and fine-tune for custom use cases. Outperforms Seedance 2.0, Ovi 1.1, and LTX 2.3 on Artificial Analysis Video Arena leaderboard.
Native support for 7 languages: English, Mandarin, Cantonese, Japanese, Korean, German, French. Ultra-low WER lip-sync ensures natural dialogue. Full commercial usage rights.
Blazing Fast: 1080p in ~38 Seconds
DMD-2 distillation reduces denoising to 8 steps without CFG. MagiCompiler accelerated inference: ~2s for 5-second 256p, ~38s for 1080p on H100. The fastest open-source AI video generator available.
Native Joint Audio-Video Generation
Single unified 40-layer Transformer generates video and audio together. Perfectly synchronized dialogue, ambient sounds, and Foley effects. Ultra-low WER lip-sync. No post-production dubbing needed.
Flexible Pricing
Happy Horse 1.0: Simple, Transparent Pricing
Powered by the world's leading open-source SOTA AI video generator: 15B-parameter unified Transformer, ~38s for 1080p, 7-language lip-sync.
Basic
540 credits each month, ideal for consistent creators.
$11.90/mo
- ✓540 credits monthly (≈54 videos)
- ✓1080p generation (~38s per video)
- ✓7-language native lip-sync
- ✓Email support
Pro
2040 credits and priority processing for growing teams.
$39.90/mo
- ✓2040 credits monthly (≈204 videos)
- ✓Priority queue access
- ✓Native audio-video joint generation
- ✓Priority support
Studio
6000 credits, fastest queues, and dedicated assistance.
$99.99/mo
- ✓6000 credits monthly (≈600 videos)
- ✓Fastest processing lanes
- ✓Dedicated account manager
- ✓Full commercial rights
Happy Horse 1.0 FAQ
Common Questions About the AI Video Generator
Happy Horse 1.0 is the only AI video generator with native multi-shot storytelling — automatically creating coherent scene sequences from a single prompt. It maintains persistent character identity, generates synchronized audio in one pass, and outputs 2K cinema-grade video 30% faster than Seedance 1.5 Pro.
Yes! New users get free credits to experience all features including multi-shot narrative generation, 2K output, and native audio sync. No credit card required.
Happy Horse 1.0 generates native 2K cinema-grade videos. Clips range from 5-12 seconds in 6 aspect ratios: 16:9, 9:16, 4:3, 3:4, 21:9, and 1:1.
Absolutely. Every video includes 100% commercial rights and copyright ownership. Enterprise-grade SOC 2 compliant security, 99.9% uptime SLA, and end-to-end encryption.
Phoneme-level accurate lip-sync in 7+ languages: English, Mandarin Chinese, Korean, Japanese, Cantonese, German, and French. Video and audio are generated in a single pass.
No hardware required. Happy Horse 1.0 runs entirely in the cloud. Access it from any device via your browser.
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