FLUX 3 Image Klein

Start with the images you want to change. FLUX 3 Image Klein turns your edit instructions and one to three reference images into a new result, with 1K or 2K output. Refine a background, restyle a scene or combine visual references while keeping your creative direction clear.You can try it on Nano Banana

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ModelFLUX 3 Image Klein Add image reference1 image Describe the image you want to create or edit...Use FLUX 3 Image Klein

FLUX 3 Image Klein image gallery with photography, illustrated scenes, a postage stamp and typography

What is FLUX 3 Image Klein?

FLUX 3 Image Klein is Black Forest Labs' compact, open-weights image model, officially named FLUX 3 Image Klein. Its 5.6-billion-parameter design supports flexible visual workflows. The editor here uses the distilled image-editing version: provide one to three reference images, describe the change and choose 1K or 2K output. Downloadable model versions are also available for developers building their own pipelines.

What makes FLUX 3 Image Klein useful?

Use a small set of reference images and a clear edit instruction to develop a result that fits your project.

Edit and combine one to three references

Upload an image to edit, or combine up to three references that establish the subject, setting and visual style. Describe the role of each image and the changes you want. At least one reference is required for this editing workflow.

Make focused changes with natural language

Describe the detail you want to change and the parts you want to keep. Refresh a background, adjust a material or explore a different season while guiding the original composition. For a clearer edit, give each instruction a specific purpose and build on the result that works best.

Explore photography, illustration and design

Restyle a photograph as an illustration, explore a different lighting treatment or refine a graphic concept from a reference. Describe the medium, colors and composition you want to change while identifying the details that should stay recognizable.

Choose 1K or 2K image output

Use 1K, the default, to explore an edit or choose 2K when you need a larger result. Leave the aspect ratio on Auto to follow the first reference image, or choose a supported ratio for a different composition. Review fine details and any text before publishing.

Run a compact model in your own pipeline

The 5.6B-parameter model is designed to run on a single compatible consumer GPU. Download the weights for your own hardware or cloud setup, and connect Klein to ComfyUI or a custom pipeline. Its developer workflows also support bounding boxes for more deliberate control over a composition.

Choose fast inference or deeper customization

The online editor uses the distilled model for fast image editing. Developers can also explore the undistilled Base weights for fine-tuning and research. Choose the hosted editing workflow for changes from reference images, or set up a separate local pipeline for model customization.

How to use FLUX 3 Image Klein

Upload your references, describe the edit and choose the output settings.

Upload one to three images

Open the image editor with FLUX 3 Image Klein selected and add at least one reference image. The first image sets the output aspect ratio by default. Use additional references to guide the subject, scene or style.

Describe the edit and choose a size

Enter a clear instruction describing what should change and what should stay the same. Choose 1K or 2K output. Keep Auto framing to follow the first reference, or select a supported aspect ratio.

Generate, review and refine

Sign in, review the credit cost and generate your edit. Check the composition and important details, then adjust the instruction or references for another version. Download the result that fits your project.

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FLUX 3 Image vs FLUX 3 Image Klein

FLUX 3 Image is Black Forest Labs' full-scale flagship image model. FLUX 3 Image Klein brings the family's capabilities to a smaller, open-weights architecture with a 5.6-billion-parameter image transformer, designed for fast generation and local hardware.

Feature	FLUX 3 Image	FLUX 3 Image Klein
Model role	Full-scale flagship architecture for demanding image creation	Compact, open-weights model built for speed and customization
Size and architecture	A larger architecture focused on detailed images and complex scenes	5.6B-parameter image transformer with a separate Qwen3-VL-4B-Instruct text encoder; the encoder is excluded from the 5.6B count
Creative focus	High-quality rendering, subtle stylistic detail and complex compositions	Fast image generation, instruction-based editing and multi-reference composition
Deployment	Hosted access through Black Forest Labs' API	Downloadable weights for a compatible consumer GPU, your cloud or a custom pipeline
Customization	Guide image creation with prompts, reference images and targeted edits	An undistilled Base checkpoint for fine-tuning, LoRA training and research, plus step-distilled checkpoints for low-latency inference
Best fit	Detailed scenes, polished visuals and demanding creative projects	Interactive tools, local image workflows and rapid creative iteration

What can you create with FLUX 3 Image Klein?

Use a specific creative brief to turn the model's image capabilities into something useful for your project.

Portraits and editorial images

Explore lighting, styling and framing for a portrait series. Use references to guide the subject and describe the mood you want across the set.

Product and campaign concepts

Try new settings, materials and visual directions for a product concept. Keep the product reference clear and give the scene a single focal point.

Illustrations and story worlds

Develop a scene as a print, an illustrated story or a stylized concept. Describe the medium and texture alongside the characters and setting.

Posters and graphic layouts

Explore a poster, cover or packaging idea with text and imagery working together. Specify the hierarchy, color palette and exact wording in your brief.

Photo edits and scene variations

Change the atmosphere, an object or a background in an existing image. Name the elements you want to preserve so the edit has a clear boundary.

Custom creative pipelines

Use the open weights as a starting point for a ComfyUI workflow or a custom model project. Choose Base when your work involves fine-tuning or research.

Explore FLUX 3 Image Klein on X

Discover FLUX 3 Image Klein examples, creative ideas and image-editing workflows shared on X.

FLUX 3 Image Klein FAQ

Answers about required references, edit instructions, image sizes and working with the open weights.

What is FLUX 3 Image Klein?

FLUX 3 Image Klein is a compact, open-weights image model from Black Forest Labs, officially called FLUX 3 Image Klein. The online editor uses its distilled image-editing workflow: a prompt and one to three reference images are required. Optional settings let you choose 1K or 2K output and an aspect ratio.

Can I use FLUX 3 Image Klein online?

Yes. Open the image editor from this page, upload one to three reference images and describe the edit you want. A reference image is required; this online workflow does not accept text-only requests. Sign in to generate and review the credit cost before submitting.

Can FLUX 3 Image Klein edit images and use multiple references?

Yes. Upload between one and three reference images, then explain the changes you want and what each reference contributes. The first image determines the output aspect ratio unless you choose a different ratio. Keep the subject, setting and style instructions specific.

Which resolutions does FLUX 3 Image Klein support here?

The online editor supports 1K and 2K output. The default is 1K. Leave aspect ratio on Auto to follow the first reference image, or select a supported ratio for your composition.

What is the difference between Klein Distilled and Klein Base?

Distilled is optimized for fast inference and powers the online image-editing workflow. Base is the undistilled version for fine-tuning and research. Both have 5.6 billion parameters, but local training and deployment require a separate setup with the downloadable weights.

Can I run FLUX 3 Image Klein locally or in ComfyUI?

Yes. Download the weights from Black Forest Labs on Hugging Face and follow its setup instructions for your pipeline or ComfyUI. The model can run on a single compatible consumer GPU, although memory needs depend on the full pipeline and configuration. Follow the official prompt enhancement guidance for local inference.

Does FLUX 3 Image Klein generate video or audio?

FLUX 3 Image Klein is an image model. Its training draws on the FLUX 3 family's shared learning across images, video and audio, but Klein produces still images.

Can I fine-tune the open weights for my own project?

Yes. Klein Base is intended for fine-tuning and research, and the open weights can be used in custom pipelines. Check the license supplied with the exact model before deploying it, particularly for a commercial product. The official model cards and licensing information are linked below.

Bring your next image idea to life with FLUX 3 Image Klein.

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