# MiniMax H3 Image in Sloosh: 4K images from up to 16 references MiniMax H3 Image makes 1K, 2K or 4K images and edits from up to 16 references. What it's good at, copy-ready prompts, the Highspeed tier, and how to try it in Sloosh. 11 Nov 2026 · 4 min read · Models · By Sloosh Web page: https://sloosh.ai/blog/minimax-h3-image-4k MiniMax H3 Image is now in Sloosh. It makes 1K, 2K or 4K images, enough to crop hard, print big or fill a 4K screen. It takes a prompt, or a prompt plus up to 16 reference images, so the same model does both new images and edits. MiniMax also published the weights on Hugging Face under its own community license. ![Close-up of a potter's clay-covered hands shaping a grey cylinder on a spinning wheel, shelves of unfired pots blurred behind.](https://cdn.pro.shopos.ai/sloosh/o/93664a0d00debd5d/01a1c91c-6114-749b-858a-4db84b00f83c.webp) _Made with MiniMax H3 Image in Sloosh. AI-generated._ ## What's new - **Up to 4K.** 1K, 2K or 4K. 2K is the default. - **Up to 16 references.** A product, a model, a setting and a colour swatch in one run, referred to by position (image 1, image 2, ...) in the order you add them. - **Wide and tall shapes.** 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3, 4:5, 5:4, 21:9 and 9:21. - **Long prompts.** Up to 32,000 characters. - **Open weights.** The model is on Hugging Face as `MiniMaxAI/MiniMax-H3-Image`. In Sloosh you don't need any of that: pick it in the model chip. What it doesn't do: transparent backgrounds, negative prompts or a seed. For a sticker or a logo on a transparent PNG, use [GPT Image 2.6 Sunburst](https://sloosh.ai/models/gpt-image-2.6-sunburst). ## When to use it Pick H3 Image when the picture is going somewhere big and has to look like a photo: a hero banner, a product page image people will zoom into, a print, a billboard mock-up. Pick it for edits that pull from several images at once. Hand it the jacket, the model and the location, say which is which, and say what must not change. Pick something else for GIFs, SVGs or transparent PNGs (GPT Image 2.6). ## Highspeed MiniMax ships a second tier, [MiniMax H3 Image Highspeed](https://sloosh.ai/models/minimax-h3-image-highspeed), with the same inputs and limits at a higher price. The Generate button shows the price of each before you run it. ## Copy-paste prompts MiniMax's model card recommends detailed English prompts, and MiniMax's API can also enhance a prompt before it renders. Describe the subject, the light, the surface, the lens and the shape of the frame. A product shot for a banner: ```text A close-up product photo of a brushed steel wristwatch with a deep green dial, lying on a slab of dark grey slate. Soft window light from the left, a thin reflection along the bezel, fine scratches visible on the slate. Shallow depth of field, the strap fading out of focus at the back. Horizontal 16:9 frame for a website banner, empty slate on the right for copy. ``` A wide scene for the 21:9 shape: ```text A wide 21:9 photo of a quiet harbour town at dawn. Pastel houses along the water, fishing boats tied up in a row, mist sitting low on the bay, gulls on the harbour wall. Natural colour, fine detail in the windows and rigging, no people. ``` Since the model takes no negative prompt, describe what you want to see. "A plain wall with nothing written on it" works better than "no text". ## References and 4K - Add up to **16 reference images** and give each one a job in the prompt: "Image 1 is the shirt. Image 2 is the model. Image 3 is the terrace." - Say what must stay the same: "Keep her face, hair and pose exactly as in image 2." - Work at **2K** (the default) while you get the look right. Render the keeper at **4K**. - With no seed, ask for several images in one run (up to 4 in Studio) to see variations side by side. Copy this for a three-reference edit: ```text Image 1 is a linen shirt. Image 2 is the model. Image 3 is a sunlit terrace. Put the shirt from image 1 on the model in image 2, sleeves rolled once, standing on the terrace from image 3. Keep her face, hair and pose exactly as in image 2, and the shirt's colour and buttons exactly as in image 1. ``` ## How it compares in Sloosh | Model | Resolution | References | Prompt limit | Also makes | | --- | --- | --- | --- | --- | | MiniMax H3 Image | 1K, 2K, 4K | 16 | 32,000 | | | MiniMax H3 Image Highspeed | 1K, 2K, 4K | 16 | 32,000 | | | GPT Image 2.6 Sunburst | 1K, 2K, 4K | 16 | 32,000 | GIF, SVG, transparent PNG | | Nano Banana Pro | 1K, 2K, 4K | 14 | 50,000 | | | Seedream 5 Pro | 1K, 2K | 10 | 5,000 | | H3 Image and GPT Image 2.6 Sunburst match on resolution, references and prompt length. Sunburst has more file types and five quality levels; H3 Image has the 21:9 and 9:21 shapes. Run the same prompt on both and keep the one you like. ## Try it in two minutes 1. **Open Studio with MiniMax H3 Image selected.** 2. **Paste one of the prompts above, or add references and write your own.** 3. **Pick the aspect ratio, the resolution and how many images.** 4. **Check the price on the Generate button, then generate.** New Sloosh workspaces start with free credits, which is enough to try it. Every run shows its price before you press Generate. Sources:[MiniMax image generation guide](https://platform.minimax.io/docs/guides/image-generation), [MiniMax-H3-Image on Hugging Face](https://huggingface.co/MiniMaxAI/MiniMax-H3-Image). ## FAQ **What is MiniMax H3 Image?** MiniMax's open-weight image model. In Sloosh it makes 1K, 2K or 4K images from a prompt, or edits from up to 16 references. **What sizes does it make?** 1K, 2K or 4K, in 11 shapes from 21:9 to 9:21. 2K is the default. **What is H3 Image Highspeed?** MiniMax's Highspeed tier, with the same inputs and limits at a higher price. **How many reference images can I use?** Up to 16 per generation, referred to by position in the order you add them. **Can it make a transparent background?** No. Use GPT Image 2.6 Sunburst for transparent PNGs. **Is MiniMax H3 Image open source?** The weights are public on Hugging Face under the MiniMax-H3-Image Community License, which has its own terms. In Sloosh you use it with no setup or API key. **Is it free?** New Sloosh workspaces start with free credits. After that, each run shows its price on the Generate button before you press it.