MiniMax H3 AI Video Generator

MiniMax H3 is the video model MiniMax released on 31 July 2026. It turns a text prompt or a still photo into a short clip and generates the sound in the same pass, including short spoken lines. On CastTake you pick it in the studio, choose 720p or 1080p and a length of 5, 8, 10 or 15 seconds, and see the credit price before you press Generate. We rendered six clips with it on 16 October 2026, plus a 1080p re-run of one prompt, and put every result on this page with its prompt, so you can judge the model from real output rather than a feature list.

Not on CastTake, and we would rather say so up front. Sign-in credits do not cover video renders: your first credit pack opens every video model, and pack credits never expire. A 5-second 720p clip costs 10 credits, the lowest price of any video model we sell, so a pack goes a long way while you test prompts. Before you buy, watch the six clips above and copy a prompt you like, so your first paid render starts from something that already worked. The studio shows the exact price on the Generate button, and nothing is charged until you press it.

A clip from text or one photo costs 10 credits for 5 seconds at 720p and 15 at 1080p. Longer clips scale with length, so 15 seconds at 720p is 30 credits. Using reference photos to keep a person or product consistent costs more: 40 credits for 5 seconds at 720p and 60 at 1080p. The table above lists every length, and the studio shows the exact total on the Generate button before anything renders. Credits come from a plan or a top-up pack on the pricing page.

Yes. Every clip on this page came back with an audio track made in the same render, with no separate step. Ambience and effects matched the scene: surf, a sizzling wok, rain on a shelter roof. In the bus stop test we quoted a short line and the woman spoke it with matching lip movement, though our transcript heard one word twice. Name the sounds you want in the prompt, put dialogue in quotation marks, and keep lines short enough to say comfortably inside the clip length you picked.

CastTake does not sell API access, only the studio, where you type a prompt, pick the model and download the finished MP4. MiniMax offers its own API for developers who want to build H3 into an app, and its documentation covers keys, request limits and pricing. If you only need clips rather than an integration, the studio is simpler: no code, no key to manage, the price shown before each render, and your finished videos kept in your account history so you can download them again later.

Start with H3 unless you need a multi-shot scene from one render. On CastTake a 5-second 720p clip is 10 credits on H3 and 325 on Seedance 2.5, so you can try dozens of H3 prompts for the price of one Seedance clip. H3 also renders 1080p, while Seedance 2.5 is sold at 720p here. Seedance 2.5 is described as stronger at multi-shot storytelling with dialogue. A practical order is to find the idea on H3, then spend on Seedance 2.5 only when the story truly needs several shots inside a single clip.