IMAGE MODEL by Black Forest Labs FLUX1.1 \[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

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## 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. A1b7fd8752da616e93054230e22f1b6357475c78 1935x1080

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## Capabilities Produces candid, photojournalism-style images with authentic lighting variation, more diverse human subjects, and reduced synthetic look. Accepts a base image as input with adjustable influence strength (0.0–1.0) for style-guided or composition-directed generation. Optional prompt enhancement automatically expands short prompts into richer descriptions for better results.

## How to use Go to the **ImagineArt AI Image Generator**. From the model dropdown, choose **Flux Ultra 1.1**. Select standard **Ultra Mode** for maximum resolution, or enable **Raw Mode** if you want a more candid, photojournalistic aesthetic. Write a detailed prompt. For Raw mode, describe candid scenes, environmental portraits, or nature photography subjects for the most authentic results. Choose the aspect ratio. Landscape (16:9) or portrait (9:16) recommended for maximum pixel dimensions. 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. ## Compare models | Model | Max resolution | Key differentiator | Best for | | ---------------------- | ----------------- | ----------------------------------- | ---------------------------------------- | | **Flux Ultra 1.1** | 4MP (2752×1536) | Raw mode, 4× resolution | Print, editorial, commercial photography | | **Flux Dev** | \~1MP (1024×1024) | Open weights, fine-tuning | Research, experimentation, LoRA base | | **ImagineArt 1.5 Pro** | Native 4K | Composition control, text rendering | Posters, branding, typography | | **Seedream 4.0** | Native 4K | Up to 6 references | Multi-reference campaigns |