MiniMax H3-Image.
MiniMax H3-Image is an open-weight image model from MiniMax. Specs, recommended settings, hardware and licence terms, from the developer's own pages.
- Status
- Reference
- Task
- Text to image, Image editing
- Input
- Prompt, optional reference images (up to 16)
- Output
- Images at about 16 MP
- Developer
- MiniMax
- Parameters
- 33.1B
- Released
- November 2026
What the model does.
Paraphrased from the official model card.
MiniMax H3-Image is a 33.1B diffusion transformer derived from MiniMax H3, the video model, with the audio branch removed. One checkpoint covers text to image, up to 16 reference images and editing.
It's distilled to 6 sampling steps with no classifier-free guidance and no negative prompt, and generates at about 16 megapixels. The licence excludes the US, the EU, the UK and South Korea.
Reference page.
We don't currently serve MiniMax H3-Image. The specs, settings and licence terms on this page come from MiniMax's own pages.
Live for images today: Z-Image Turbo (text to image) and FLUX.2 [klein] 4B (text to image). See Image generation for what the API does now.
Is MiniMax H3-Image licensed for commercial use?
Conditional. The licence doesn't cover the United States, the European Union, the United Kingdom or South Korea. Elsewhere commercial use is allowed, but businesses above US$1 million in annual revenue, and anyone running it as a hosted service, need MiniMax's written authorisation, and commercial products must show "MiniMax-H3-Image" in their interface.
- No rights in the European Union, the United Kingdom, South Korea or the United States. MiniMax-H3-Image, LICENSE
- Commercial use above US$1 million in annual revenue, and running it as a hosted service for third parties at any revenue, need MiniMax's written authorisation. MiniMax-H3-Image, LICENSE
- Commercial products must show "MiniMax-H3-Image" prominently in the interface. The model and its outputs can't be used to improve other AI models, except derivatives of H3-Image. MiniMax-H3-Image, LICENSE
This is our reading of the licence, not legal advice. Read the licence text before you rely on it.
MiniMax H3-Image hardware requirements.
Published by MiniMax for running the weights yourself. These are the developer's figures, not Windpaint's.
- Published VRAM
- Not stated
- GPUs named
- H200, RTX PRO 6000 Blackwell, MI350X (supported list)
- Applies to
- No VRAM figure on the card. BF16 DiT 66.28 GB plus text encoder 66.7 GB.
- The card gives no VRAM figure. In BF16 the DiT (
transformer/) is 66.28 GB, the VAE 2.34 GB, and the text encoder, loaded from the MiniMax-H3 repo'stext_encoder/folder, 66.7 GB. MiniMax-H3-Image model card - The card lists the NVIDIA H200, RTX PRO 6000 Blackwell and AMD Instinct MI350X as supported hardware. MiniMax-H3-Image model card
- The optional prompt expander, MiniMax-H3-Image-PE, is 17.9 GB in NVFP4. MiniMax-H3-Image model card
MiniMax H3-Image native resolution.
What the developer's own code and examples use.
- About 16 MP recommended, with a working range of about 4 to 20 MP. Sizes from the card include 4096 × 4096 (1:1), 4736 × 3552 (4:3), 5024 × 3360 (3:2), 5472 × 3072 (16:9) and 6272 × 2688 (21:9). MiniMax-H3-Image model card
- The reference server's
min_generation_areadefaults to 2048 × 2048, so smaller requests are rendered at that size and resized down. MiniMax-H3-Image model card
Recommended settings for MiniMax H3-Image.
Steps, guidance and defaults from the developer's card and code, for running the weights yourself.
- 6 sampling steps, guidance scale 1 (no classifier-free guidance), no negative prompt, BF16. The SGLang and vLLM-Omni servers reject other values. MiniMax-H3-Image model card
- One checkpoint covers text to image, up to 16 reference images and editing. References are called
<Picture 1>,<Picture 2>and so on in upload order. MiniMax-H3-Image model card
MiniMax H3-Image prompt guide.
From MiniMax's own prompt guide, prompt tooling and examples.
- The card says the model expects a detailed English description of the whole image. MiniMax-H3-Image-PE can expand short prompts. MiniMax-H3-Image model card
MiniMax H3-Image limitations.
As the developer states them.
- H3-Image-Context-IR, the prompt module MiniMax's hosted version uses, isn't in the open release. MiniMax-H3-Image model card
Questions.
Can I call MiniMax H3-Image on Windpaint?
Not at the moment. For images today, z-image-turbo and flux-2-klein-4b are live.
How much VRAM does MiniMax H3-Image need?
The card doesn't give a figure. In BF16 the DiT is 66.28 GB and the text encoder 66.7 GB, and the card lists the H200, RTX PRO 6000 Blackwell and MI350X as supported.
How many steps does MiniMax H3-Image use?
Six, with guidance scale 1 and no negative prompt. The reference servers reject other values.
Is MiniMax H3-Image open source?
No, it's open-weight. The weights are downloadable, but its licence (MiniMax-H3-Image Community License Agreement) restricts how they can be used, so it isn't an open-source licence.
Can MiniMax H3-Image be used commercially?
Conditional. The licence doesn't cover the United States, the European Union, the United Kingdom or South Korea. Elsewhere commercial use is allowed, but businesses above US$1 million in annual revenue, and anyone running it as a hosted service, need MiniMax's written authorisation, and commercial products must show "MiniMax-H3-Image" in their interface. Its licence is MiniMax-H3-Image Community License Agreement. That's our reading of the licence, not legal advice; check the licence text before you rely on it.