FLUX

FLUX, from Black Forest Labs, makes and edits images. Add reference images and it edits or combines them.

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What you can give it

• A prompt.
• References: up to 10 images on FLUX.3 Image, or 9 on FLUX.2 Pro.

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Output settings

FLUX.3 Image

• Aspect ratio: Auto, 1:1, 3:2, 2:3, 4:3, 4:5, 3:4, 16:9, 9:16 or 21:9. Auto makes a square image, or follows the first reference when editing.
• Resolution: 1K, the default, 2K or 4K.

FLUX.2 Pro

• Aspect ratio: Auto, 1:1, 3:2, 2:3, 4:3, 3:4, 16:9 or 9:16, each up to 1 megapixel. 3:2 comes out as 4:3, and 2:3 as 3:4.
• When editing, Auto follows the first reference, up to 4 megapixels.

Each run makes one image.

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Cost

• FLUX.3 Image is priced per megapixel of the result, and references are free. A 1K square image costs about $0.07, 2K about $0.25 and 4K about $1.00.
• FLUX.2 Pro costs about $0.04 for a 1-megapixel image. Edits also count the references’ size.

Prices are as of October 28, 2026. For FLUX.3 video, see FLUX.3 video.