HappyHorse 1.0 AI Video Generator

HappyHorse 1.0 is a next-generation AI video generation model built on a 15-billion parameter Unified Self-Attention Transformer architecture. It is the first AI video model to rank #1 simultaneously for both Text-to-Video (T2V Elo: 1333) and Image-to-Video (I2V Elo: 1392) on the Artificial Analysis Video Arena as of April 2026. HappyHorse 1.0 generates up to 10-second 1080p video clips with fully synchronized native audio in approximately 32 seconds.

HappyHorse 1.0's Text-to-Video mode accepts natural language prompts in 7 supported languages. Simply describe the scene, characters, camera movement, lighting, and style you want. The model's 40-layer Unified Self-Attention Transformer processes your prompt alongside video frame tokens in a single unified sequence — no cross-attention separation — resulting in precise prompt adherence for complex multi-agent interactions, action sequences, and diverse stylistic directions. The output is a high-quality MP4 with native audio, ready to download and publish.

Three things set HappyHorse 1.0 apart. First, its unified architecture eliminates the modality gap between text, image, and audio — everything is processed in one forward pass for deeper cross-modal understanding. Second, it generates audio and video simultaneously, so lip sync and sound design are never bolted on after the fact. Third, it achieves ~87% multi-shot consistency, meaning characters and visual style remain stable across cuts — a capability no other publicly available model matches as of 2026.

Yes — and HappyHorse 1.0 holds the highest I2V Elo score (1392) of any model on the Artificial Analysis Video Arena. Upload any reference image — a product photo, portrait, illustration, or screenshot — and HappyHorse animates it with physically aware, naturalistic motion while preserving source image fidelity. There is no distortion, no character drift, and no flickering. I2V supports optional end-frame specification for precise control over the motion arc.

HappyHorse 1.0 supports output resolutions up to 1080p at 30 FPS, with aspect ratio options covering landscape (16:9), portrait (9:16), and square (1:1) formats. Clip duration is configurable from 2 to 15 seconds per generation. Generation time for a 10-second 1080p clip using 8-step CFG-free inference is approximately 32 seconds. Starter plan users are limited to 720p export; Basic, Plus, and Professional plans unlock full 1080p output.

HappyHorse 1.0 generates audio natively within the same Unified Self-Attention forward pass as video — not as a separate post-processing step. This means dialogue, ambient sound, and sound effects are generated with frame-by-frame synchronization. The model supports native lip sync in 7 languages: Mandarin, Cantonese, English, Japanese, Korean, German, and French. No third-party audio tool or manual sync is required — your exported MP4 includes a fully mixed audio track.

Yes. New users on JXP receive free experience credits upon registration, which can be used to generate videos with HappyHorse 1.0 and other models on the platform. No credit card is required to start. If you decide to continue, paid plans begin at $9.90 for 99 credits (Starter) up to $99.90 for 1,250 credits (Professional). All credits are one-time purchases — not subscriptions — and they never expire.

HappyHorse 1.0 accepts text prompts and generates native audio lip sync in 7 languages: Mandarin Chinese, Cantonese Chinese, English, Japanese, Korean, German, and French. You can write your prompt in any of these languages and the model will generate video content — including spoken audio — that matches the linguistic and cultural nuances of your input. This makes HappyHorse 1.0 uniquely suited for global brands and multilingual content creators.