MiniMax H3 AI 视频生成

MiniMax H3 is a general-purpose multimodal video generation model released by MiniMax in July 2026. It processes text, images, video, and audio in one shared context instead of treating each input type as a separate workflow. MiniMax positions H3 for production work that needs instruction following, readable text and brand elements, coherent motion, and native stereo sound. The model can generate up to 15 seconds of native 2K video.

On FlyAIgh, H3 supports four workflows from one account: text-to-video, image-to-video, first-and-last-frame interpolation, and multimodal reference-to-video. FlyAIgh exposes whole-second durations from 5 to 15 seconds at 480p, 768p, 1080p and native 2K. The 480p–1080p tiers run on a hosted build of the open-source H3 weights; native 2K runs on MiniMax's official service. Text-to-video and reference-to-video include an aspect-ratio picker; image-to-video and first/last-frame generation follow the source image ratio.

Reference-to-video is where H3 differs most from a conventional image animator. A generation can use up to nine images, three videos, and three audio files (at native 2K, no more than 12 reference files in total). Images can define a person, product, location, costume, or visual style. Video references can guide movement, performance, or camera behavior, while audio can provide dialogue, music, or timing. Describe each reference's role clearly in the prompt so the model knows what to preserve and what to transform.

MiniMax says H3 uses a Contextual Omni Representation, an H3-VAE that compresses the effective sequence length, an H3-Omni Transformer, and in-context regeneration for 2K output. In practical terms, that architecture is designed to keep multimodal instructions and longer clips coherent without relying on a separate super-resolution pass. Useful applications include product ads, branded social videos, ecommerce demonstrations, UI and game concepts, character-driven clips, motion transfer, and shots built around an existing soundtrack.

FlyAIgh prices H3 per output second: 2 credits at 480p, 2.7 at 768p, 4 at 1080p and 7.2 at native 2K. A 5-second clip costs 10, 14, 20 or 36 credits; 768p used to cost 21 for the same clip. At 480p–1080p, reference images, videos and audio add nothing to the price. At native 2K, the first five reference images are included and each additional image costs 2 credits, reference video is billed by input duration at the 2K rate, and reference audio has no separate surcharge. The exact total is shown before generation, and no separate MiniMax account or API key is required.