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FLUX 3 Image
FLUX 3 Image lays out a picture exactly how you want: pick an aspect ratio, drag a bounding box per element, and tie it together with one scene prompt.
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Why FLUX 3 Image
Lay out the image exactly how you want using bounding boxes, an aspect ratio and one scene prompt.
- Bounding-Box Layout ControlDrag out a box for every element that matters, then describe what goes inside it.
- Aspect Ratio, Fixed 0–1000 GridPick any canvas shape — both axes stay a 0 to 1000 grid, so box coordinates keep meaning.
- One Scene Prompt Ties It TogetherA single scene line unifies every described box, the way Le Festival du Soleil was generated.
How to Use FLUX 3 Image
Three steps from an empty canvas to a laid-out image.
FLUX 3 Image FAQ
Quick answers about laying out a FLUX 3 Image with bounding boxes.
How do bounding boxes decide where things go?
You drag out a box for each element that matters, and that box defines the region the described element occupies in the image.
What does the 0–1000 canvas grid mean?
Whatever the aspect ratio of the canvas, both axes are measured as a 0 to 1000 grid, so box positions are expressed on a consistent scale.
Do I have to choose an aspect ratio before laying out?
Yes — you pick an aspect ratio first, and because the canvas is always a 0 to 1000 grid on both axes, the same box coordinates stay readable across shapes.
What is the scene prompt used for?
The scene prompt is one line that ties the individual elements together, as in the example 'Le Festival du Soleil, generated from bounding boxes and a scene prompt'.
Can each box be described separately?
Yes — after dragging a box for an element, you describe what goes in that box, so each region carries its own content instruction.
Do I need a subscription or seat licence?
No: pricing is pay as you go with no subscriptions and no seat fees, you only pay for what you generate, and open-weights licensing tiers exist for running the models on your own infrastructure.
Lay Out Your Own FLUX 3 Image
Box every element, add one scene prompt, then generate. Pay as you go.