Parameter List

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Article Summary

Parameters are options added to a prompt that change how an image generates. Parameters can change an image's Aspect Ratios, switch between Midjourney Model Versions, change which Upscaler is used, and lots more.

Parameters are always added to the end of a prompt. You can add multiple parameters to each prompt.

Example of how Midjourney parameters are used.

Using an Apple device?

Many Apple devices automatically change double hyphens (--) to an em-dash (—). Midjourney accepts both!

Basic Parameters

Aspect Ratios

--aspect, or --ar Change the aspect ratio of a generation.

Chaos

--chaos <number 0–100> Change how varied the results will be. Higher values produce more unusual and unexpected generations.

Image Weight

--iw Sets image prompt weight relative to text weight. The default value is --iw 0.25.

No

--no Negative prompting, --no plants would try to remove plants from the image.

Quality

--quality <.25, .5, or 1>, or --q <.25, .5, or 1> How much rendering quality time you want to spend. The default value is 1. Higher values use more GPU minutes; lower values use less.

Repeat

--repeat <1–40>, or --r <1–40> Create multiple Jobs from a single prompt. --repeat is useful for quickly rerunning a job multiple times.

--seed <integer between 0–4294967295> The Midjourney bot uses a seed number to create a field of visual noise, like television static, as a starting point to generate the initial image grids. Seed numbers are generated randomly for each image but can be specified with the --seed or --sameseed parameter. Using the same seed number and prompt will produce similar ending images.

Stop

--stop <integer between 10–100> Use the --stop parameter to finish a Job partway through the process. Stopping a Job at an earlier percentage can create blurrier, less detailed results.

Style

--style <raw> Switch between versions of the Midjourney Model Version 5.1.
--style <4a, 4b, or 4c> Switch between versions of the Midjourney Model Version 4.
--style <cute, expressive, original, or scenic> Switch between versions of the Niji Model Version 5.

Stylize

--stylize <number>, or --s <number> parameter influences how strongly Midjourney's default aesthetic style is applied to Jobs.

Tile

--tile parameter generates images that can be used as repeating tiles to create seamless patterns.

Default Values (Model Version 5)

	Aspect Ratio	Chaos	Quality	Seed	Stop	Stylize
Default Value	1:1	0	1	Random	100	100
Range	any	0–100	.25 .5, or 1	whole numbers 0–4294967295	10–100	0–1000

Aspect ratios greater than 2:1 are experimental and may produce unpredictable results.

Default Values (Model Version 4)

	Aspect Ratio	Chaos	Quality	Seed	Stop	Style	Stylize
Default Value	1:1	0	1	Random	100	4c	100
Range	1:2–2:1	0–100	.25 .5 or 1	whole numbers 0–4294967295	10–100	4a, 4b, or 4c	0–1000

Model Version Parameters

Midjourney routinely releases new model versions to improve efficiency, coherency, and quality. Different models excel at different types of images.

Niji

--niji An alternative model focused on anime-style images.

Version

--version <1, 2, 3, 4, or 5> or --v <1, 2, 3, 4, or 5> Use a different version of the Midjourney algorithm.

Legacy Parameters

Some parameters only work with earlier Midjourney Models.
Read More about legacy parameters here.

Compatibility

Model Version & Parameter Compatability

	Affects initial generation	Affects variations + remix	Ver. 5	Ver. 4	Niji 5
Max Aspect Ratio	✓	✓	any	1:2 or 2:1	any
Chaos	✓		✓	✓	✓
Image Weight	✓		.5–2 default=1		.5–2 default=1
No	✓	✓	✓	✓	✓
Quality	✓		.5–2	.5–2	.5–2
Repeat	✓		✓	✓	✓
Seed	✓		✓	✓	✓
Stop	✓	✓	✓	✓	✓
Style			raw	4a, and 4b	cute, expressive, original and scenic
Stylize	✓		0–1000 default=100	0–1000 default=100	0–1000 default=100)
Tile	✓	✓	✓		✓

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