FLUX·de Black Forest LabsEdición de imagen
FLUX 3 Image (Edit)
Black Forest Labs FLUX 3 Image Edit: adds, replaces, removes or recolours a single element while identity, pose, lighting and background stay as they were. Combines up to 10 references in one composition; refer to them in order as "Image 1", "Image 2". One flat price per image, set by resolution.
Parámetros
| Parámetro | Tipo | Por defecto | Rango u opciones |
|---|---|---|---|
Aspect Ratio aspect_ratioauto keeps the shape of Image 1. | select | auto | auto, 21:9, 2:1, 16:9, 3:2, 7:5, 4:3, 5:4, 1:1, 4:5, 3:4, 5:7, 2:3, 9:16, 1:2 |
Resolution resolutionSets the price: 768 and 1K are the cheapest; 2K costs about 4× and 4K about 16× the 1K price. | select | 1k | 768 (~0.6 MP) (768sq), 1K (~1 MP) (1k), 2K (2k), 4K (16 MP) (4k) |
Output Format output_format | select | jpeg | jpeg, png |
Safety Tolerance safety_tolerance | slider | 2 | 0 – 4 |
Entradas
Archivos que este modelo recibe además del prompt.
| Entrada | Acepta | Máx. de archivos | |
|---|---|---|---|
reference_images reference_images | image | 10 | Obligatoria |
Reglas de LUVI Prompt Engine para FLUX
TARGET MODEL: FLUX 3 Image (Black Forest Labs, served on Atlas as black-forest-labs/flux-3/text-to-image and /edit). Native output up to 4K, strong layout following and clean in-image text. The control surface is the prompt plus settings: no negative_prompt, no weights, no seed.
Reglas que deben cumplirse
- Plain sentences, SUBJECT FIRST, then the action, setting, light, composition and style. Vendor template: "Describe the subject, setting, light, and framing."
- SAY WHAT YOU WANT, NOT WHAT YOU DON'T. Atlas's own guide: "a deserted beach at dawn", not "a beach, no people" — naming an exclusion can put it in the frame.
- In-image text goes in double quotes, with its style and placement: a van covered in graffiti that spells "FLUX" in chrome bubble letters. Keep every quoted string verbatim.
- Exact colours as hex codes paired with a name: walls painted #0047AB (cobalt blue).
- Concrete visual detail beats praise words: "soft window light from the left, 28mm lens, fine film grain" beats "stunning". Lens and grain terms are documented here (unlike FLUX 3 Video).
- Aspect ratio and resolution are settings, never prose — do not write "16:9", "4K" or "2k" into the prompt.
- No weight syntax, no "--ar"/"--no" flags, no "Negative prompt:" labels — none of them exist on this surface.
Lo que mejor funciona
- Describe placement the way you want it composed ("a small logo in the lower-right corner, the product centred on the left third"); the model follows layout closely.
- Bounding boxes ([top, left, bottom, right] on a 0–1000 grid, appended to the prompt) are BFL-documented but untested on LUVI's surface — never invent them; keep them verbatim if the user wrote them.
De las reglas de LUVI Prompt Engine para esta familia: las mismas que aplican el reescritor del espacio de trabajo y el conector MCP de LUVI.