Examples
Happy Horse 1.0 — #1 AI Video Generator
Leading open-source model for Text-to-Video and Image-to-Video generation
Happy Horse 1.0 is a 15B-parameter AI video model ranked #1 on the Artificial Analysis Video Arena for T2V (Elo 1,333) and I2V (Elo 1,392). Built on a unified 40-layer single-stream Transformer, it jointly generates 1080p video with synchronized audio, 7-language lip sync, and multi-shot storytelling — all in a single forward pass.
Happy Horse 1.0 Video Showcase
Explore videos generated by Happy Horse 1.0 — the #1 arena-ranked AI video model. Experience multi-shot storytelling, joint audio synthesis, and cinematic VFX quality that topped blind human preference tests in April 2026.
#1 Arena-Ranked Visual Quality
Happy Horse 1.0 tops the Artificial Analysis Video Arena with Elo 1,333 (T2V) and 1,392 (I2V) in no-audio categories, outperforming Seedance 2.0, Kling 3.0, and other leading models in blind human preference tests with over 3,500 votes.
Unified Video + Audio Architecture
A single-stream self-attention Transformer processes text, image, video, and audio tokens in one sequence, generating synchronized video with dialogue, ambient sounds, and Foley effects — no separate audio model or post-sync required.
Open Source & Fast Inference
Happy Horse 1.0 will be fully open-sourced (base model, distilled model, super-resolution module, and inference code). Using 8-step DMD-2 distillation, it renders 1080p video in approximately 38 seconds on H100 — fast enough for real production workflows.
Happy Horse 1.0 Core Capabilities
Joint Video + Audio Synthesis
Generate 1080p video complete with dialogue, ambient sounds, and Foley effects in a single forward pass. No separate audio pipeline or manual sync — the unified architecture handles it all simultaneously.
Multi-Shot Storytelling
Produce coherent multi-shot sequences with persistent character identity and smooth scene transitions across cuts. Characters, wardrobe, and environments stay visually consistent — no manual stitching required.
7-Language Lip Sync
Native phoneme-level lip synchronization in English, Mandarin, Cantonese, Japanese, Korean, German, and French. Render realistic micro-expressions, natural eye movement, and accurate lip sync for spokesperson content and talking-head ads.
High-Impact Dynamic Scenes
Excel at generating intense, physically grounded action — explosions, particle effects, high-speed motion, and dramatic weather. The 15B-parameter Transformer delivers frame-level detail even in chaotic, fast-moving compositions.
Generate Video with Happy Horse 1.0
Enter a Prompt
Describe the video you want — include duration, motion direction, camera work, and audio cues for best results. You can also upload a reference image for Image-to-Video generation.
Configure & Generate
Select Happy Horse 1.0 as your model, choose resolution (up to 1080p), aspect ratio, and duration (5–10s). Click generate — the model produces video with synchronized audio in a single pass.
Preview & Download
Preview the result and export a clean MP4 with audio when you're ready. Happy Horse 1.0 renders 1080p video in approximately 38 seconds, so production-ready content is just moments away.
Frequently Asked Questions about Happy Horse 1.0
Everything you need to know about Happy Horse 1.0 — the #1 open-source AI video model on the Artificial Analysis Arena
What is Happy Horse 1.0?
Happy Horse 1.0 is a 15-billion-parameter AI video generation model ranked #1 on the Artificial Analysis Video Arena for text-to-video (Elo 1,333) and image-to-video (Elo 1,392) in no-audio categories. It uses a unified 40-layer single-stream self-attention Transformer to jointly generate video and synchronized audio from text or image prompts in a single forward pass.
Is Happy Horse 1.0 open source?
The team has announced that Happy Horse 1.0 will be fully open-sourced, including the base model, distilled model, super-resolution module, and inference code. As of April 2026, the weights are not yet publicly available but the open-source release is coming soon.
What languages does Happy Horse 1.0 support for lip sync?
Happy Horse 1.0 supports native phoneme-level lip synchronization in 7 languages: English, Mandarin, Cantonese, Japanese, Korean, German, and French. This makes it ideal for producing multilingual spokesperson content and talking-head ads without live filming.
How fast is Happy Horse 1.0?
Happy Horse 1.0 uses 8-step DMD-2 distillation (no CFG required) to render 1080p video in approximately 38 seconds on an H100 GPU. MagiCompiler provides an additional 1.2x speedup on top of that, making it one of the fastest high-quality video generation models available.
Can Happy Horse 1.0 generate audio with video?
Yes. Happy Horse 1.0 features joint video + audio synthesis — it generates dialogue, ambient sounds, and Foley effects in the same single forward pass as the video. No separate audio model, post-sync, or compositing is required.
What is the maximum video length and resolution?
Happy Horse 1.0 supports video durations of 5–10 seconds at up to 1080p native resolution. It supports aspect ratios including 16:9, 9:16, and 1:1, making it suitable for everything from cinematic clips to TikTok-style vertical content.