FLUX 3 Image Klein

FLUX 3 Image Klein is the compact, open-weights version of FLUX 3 Image from Black Forest Labs, released on October 15, 2026. At 5.6 billion parameters it keeps text to image, editing, up to ten reference images, bounding boxes and up to 4K output, and it runs on a single consumer GPU. GoEnhance does not offer FLUX 3 Image Klein yet. The creation console below uses GoEnhance 2.0 Lite, our own lightweight image model, which is free to try.

Fashion Editorial Photo

Art Deco Travel Poster

Isometric Diorama

Season Change Edit

GoEnhance 2.0 Lite

Prompt

Example prompts

Opens the GoEnhance editor with this model and prompt ready.

What FLUX 3 Image Klein Brings

Frontier Features in an Open-Weights Model

Klein is a 5.6B-parameter version of FLUX 3 Image with open weights on Hugging Face. Black Forest Labs says it runs on a single consumer GPU, down to an RTX 3090, and reports about 4 seconds per 1024×1024 image on an RTX 5090 with the INT8 build. FP8, NVFP4 and INT8 versions cut memory further. The diorama shown here is an illustration, not a Klein output.

Same Controls as FLUX 3 Image

Klein takes the same request as FLUX 3 Image: a prompt, up to ten reference images, an aspect ratio, a resolution from 768sq to 4K, and the same bounding-box format for placing a headline, a product or each panel of a layout. The travel poster shown here is an illustration of a type-led design.

Edits from a Plain Instruction

Write the change as an instruction, such as turning an autumn cabin into a snowy winter night, and keep the rest of the scene in place. Klein also composes new images from several references. The before-and-after shown here is an illustration made with GoEnhance's image tools. On GoEnhance today, GoEnhance 2.0 Lite edits with up to 5 reference images.

Built to Be Fine-Tuned

Klein comes in two variants. Klein (Distilled) runs 16 steps for fast results. Klein Base runs 50 steps and is the one to fine-tune: train a LoRA on your own style, product or character, and it loads into the distilled model too. The fashion editorial shown here is an illustration.

FLUX 3 Image Klein vs FLUX 3 Image

Feature	FLUX 3 Image Klein	FLUX 3 Image
Release	October 15, 2026	October 1, 2026
Weights	Open weights (FLUX Kommunity License)	API; licensed weights for businesses
Size	5.6B parameters	Full-size model
Run it yourself	Yes, on a single consumer GPU down to RTX 3090	Only with a business weights license
Features	Text to image, editing, up to 10 references, bounding boxes	Same
Maximum output	4K	4K (about 16 megapixels)
API price per image	$0.008–$0.036	$0.041–$0.607
Available on GoEnhance	Not yet	Not yet

How to Create Images on GoEnhance Today

Write a Full Scene Description

Describe the subject, setting, light and framing in the console above, or start from a sample prompt. Put any words you want in the image in quotes.

Generate with GoEnhance 2.0 Lite

Click generate to open the GoEnhance text-to-image studio with GoEnhance 2.0 Lite selected. It costs 6 tokens per image at 1K and 12 at 2K, and the free plan can use it.

Edit with References

Switch to image to image to change a picture with an instruction, using up to 5 reference images, or ask for a transparent PNG background for product cutouts.

Come Back for Klein

We will add FLUX 3 Image Klein to this page when it becomes available on GoEnhance. Until then you can also try FLUX.2 [klein] in the same studio.

Frequently Asked Questions

You may want to know

What is FLUX 3 Image Klein?

FLUX 3 Image Klein is a 5.6B-parameter, open-weights version of FLUX 3 Image from Black Forest Labs. It supports the same features as the full model: text to image, image editing, up to ten reference images, bounding boxes and output up to 4K.

When was FLUX 3 Image Klein released?

Black Forest Labs released FLUX 3 Image Klein on October 15, 2026, two weeks after FLUX 3 Image.

Is FLUX 3 Image Klein free to use commercially?

The weights are published under the FLUX Kommunity License. According to reports, it allows free commercial use for individuals and businesses with annual revenue under $5 million; larger organizations need a separate agreement or can use the paid API.

What GPU do I need to run Klein locally?

Black Forest Labs says Klein runs on consumer GPUs down to an RTX 3090, and reports say quantized builds work with about 8 GB of video memory. It works with Diffusers and ComfyUI.

What is the difference between Klein and Klein Base?

Klein (Distilled) runs 16 steps at CFG 1 for fast generation. Klein Base runs 50 steps at CFG 3.5 and is meant for fine-tuning and LoRA training; a LoRA trained on Base also loads into the distilled model.

How does Klein differ from FLUX 3 Image?

Klein has the same request format and features but is much smaller, has open weights and costs far less on the API: $0.008 to $0.036 per image versus $0.041 to $0.607 for FLUX 3 Image.

Can I use FLUX 3 Image Klein on GoEnhance?

Not yet. The console on this page uses GoEnhance 2.0 Lite, our own lightweight image model. It costs 6 tokens per image at 1K and 12 at 2K, works on the free plan, supports transparent PNG backgrounds and edits with up to 5 reference images. We will update this page when Klein is added.

Were the example images made with Klein?

No. The four images on this page are illustrations made with GoEnhance's image tools to show the kinds of tasks Klein targets. They were not generated by FLUX 3 Image Klein or by GoEnhance 2.0 Lite.

More FLUX Models

FLUX 3 Image

FLUX.2 [klein]

FLUX.2

Flux Kontext

Start Creating on GoEnhance Today

FLUX 3 Image Klein is not available on GoEnhance yet, but GoEnhance 2.0 Lite is ready now in our text-to-image studio: 6 tokens per image, free plan included. We will update this page when Klein is added.

Try GoEnhance 2.0 Lite