MiniMax H3 Image - ComfyUI Built-in Node Documentation

Generates images from text with MiniMax H3 Image, or edits and combines up to 16 reference images. The prompt refers to the references by connection order: @Image1, @Image2, and so on.

Inputs

Parameter	Description	Data Type	Required	Range
`model`	`MiniMax-H3-Image`, or `MiniMax-H3-Image-Highspeed` for faster runs. Default: `"MiniMax-H3-Image"`.	COMBO	Yes	`"MiniMax-H3-Image"` `"MiniMax-H3-Image-Highspeed"`
`prompt`	What to generate, or how to edit the references. With reference images connected it can be at most 8,000 characters. Default: empty.	STRING	Yes	1 to 8000 characters
`size`	`2K` and `4K` derive the size from an aspect ratio; `custom` sets an exact width and height. Default: `"2K"`.	DYNAMIC_COMBO	Yes	`"2K"` `"4K"` `"custom"`
`enhance_prompt`	MiniMax rewrites the prompt into a detailed scene description before generating. Image edits are always enhanced. When off, pick a fixed aspect ratio or a custom size. Default: true.	BOOLEAN	No	true false
`seed`	Controls whether the node re-runs; results are non-deterministic regardless of the seed. Default: 42.	INT	No	0 to 2147483647
`images`	Reference images to edit or combine, addressed in the prompt as `@Image1` to `@Image16` in connection order.	AUTOGROW	No	Up to 16 images

Size “2K” and “4K” Inputs

Parameter	Description	Data Type	Required	Range
`aspect_ratio`	With `auto`, MiniMax picks the ratio from the prompt, or follows the reference image when one is connected. Text to image with `enhance_prompt` off needs a fixed ratio. Default: `"auto"`.	COMBO	Yes	Multiple options available

Size “custom” Inputs

Parameter	Description	Data Type	Required	Range
`width`	Output width in pixels. Default: 2048.	INT	Yes	512 to 7680 (step 16)
`height`	Output height in pixels. Default: 2048.	INT	Yes	512 to 7680 (step 16)

Note: For a custom size, width times height must be between 655,360 and 20,000,000 pixels with an aspect ratio of at most 3:1.

Outputs

Output Name	Description	Data Type
`image`	The generated or edited image, as PNG.	IMAGE
`revised_prompt`	The rewritten prompt MiniMax used, when prompt enhancement was on.	STRING

This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! Edit on GitHub

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