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IMAGE MODELby Black Forest LabsFLUX1.1 [pro] Ultra

Flux Ultra 1.1

Black Forest Labs’ highest-resolution model — up to 4 megapixels of output, with full prompt adherence preserved at scale. Includes Raw mode for authentic, candid photography aesthetics.

Max Output
4 Megapixels
Dimensions
Up to 2752×1536
Special mode
Raw Mode
Released
November 2024

Two modes

Ultra Mode generates images at up to 4 megapixels — four times the resolution of standard FLUX1.1 [pro] — with full prompt fidelity preserved at the higher resolution. No quality degradation. Raw Mode produces a less synthetic, more natural aesthetic: candid photography style, increased diversity in human subjects, and enhanced realism for nature and documentary scenes. Enable it when you want output that looks like it was captured, not generated.

Capabilities

Raw mode

Produces candid, photojournalism-style images with authentic lighting variation, more diverse human subjects, and reduced synthetic look.

Image-to-image support

Accepts a base image as input with adjustable influence strength (0.0–1.0) for style-guided or composition-directed generation.

Prompt upsampling

Optional prompt enhancement automatically expands short prompts into richer descriptions for better results.

How to use

1

Open the AI Image Generator

Go to the ImagineArt AI Image Generator.
2

Select the model

From the model dropdown, choose Flux Ultra 1.1.
3

Choose your mode

Select standard Ultra Mode for maximum resolution, or enable Raw Mode if you want a more candid, photojournalistic aesthetic.
4

Write your prompt

Write a detailed prompt. For Raw mode, describe candid scenes, environmental portraits, or nature photography subjects for the most authentic results.
5

Set your aspect ratio

Choose the aspect ratio. Landscape (16:9) or portrait (9:16) recommended for maximum pixel dimensions.
6

Generate

Click Generate. Flux Ultra delivers results in approximately 10 seconds.

Prompting tips

  • Ultra mode works best with highly descriptive prompts — include lighting, composition, texture, and atmosphere details to take advantage of the 4MP fidelity.
  • Raw mode excels with scene-based prompts: “Street photographer capturing a busy market”, “Wildlife portrait of an otter in natural habitat”, “Candid portrait, soft natural window light”.
  • Product photography — Use Ultra mode with precise material and lighting descriptions: “Levitating wireless mouse, studio soft box lighting, shadow gradient, minimalist white background”.

Example prompts

Macro photograph of bioluminescent mushrooms glowing in a dark forest, ethereal blue-green light, mist, shallow depth of field, National Geographic style.
Aerial view of mountain terrain at golden hour, dramatic shadow and light across ridgelines, landscape photography, ultra-detailed.

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