What is permutation prompt syntax?

Midjourney expands any {a, b, c} block in a prompt into separate jobs — one per option. With two slots of three options each, you get 3 × 3 = 9 jobs. It is the fastest way to grid-test variations of one idea.

How many images does a permutation create?

Multiply the number of options across every slot. A prompt with {a, b} and {x, y, z} produces 2 × 3 = 6 separate jobs, and each job returns the usual grid of images. This tool computes that product for you.

Does it cost more GPU time?

Yes — each permutation is a full, separate job that consumes Fast GPU minutes. A careless permutation can queue dozens of jobs at once, so the builder shows the count and an estimated minute cost before you commit.

Can I nest permutations?

You can use multiple separate slots in one prompt, and Midjourney multiplies them together. Deeply nested or numerous slots multiply fast, so keep slot counts small unless you intend a large grid.

Is my prompt sent anywhere?

No. The builder expands and counts permutations entirely in your browser. Nothing you type is uploaded.

Midjourney Permutation Prompt Builder

Midjourney permutation prompt builder

Permutation prompts are the quickest way to explore variations of a single idea in Midjourney. Using curly-brace syntax — {red, blue, green} — Midjourney expands one prompt into many jobs. This builder assembles the syntax, expands the full list, counts the exact number of jobs, and estimates the GPU-minute cost before you submit.

How permutations expand

Each {a, b, c} block becomes one job per option, and multiple blocks multiply:

prompt: a {sunny, rainy} street in {Tokyo, Paris}
→ 2 × 2 = 4 jobs
  - a sunny street in Tokyo
  - a sunny street in Paris
  - a rainy street in Tokyo
  - a rainy street in Paris

Because every job is a full generation, the total count is the product of all slot sizes — which is why three slots of four options is already 64 jobs.

Tips for efficient permutations

Vary one axis at a time when refining — it isolates what actually changed.
Keep slots small (2–4 options) unless you deliberately want a big grid.
Watch your Fast minutes — the builder’s estimate warns you before a run eats your monthly allowance.
Stylize/version flags apply to every job, so set them once on the base.