Diffus
Get started
Black Forest Labs' Flux.2 line

Run Flux.2 Klein in Your Browser

Klein 9B and 4B, plus the 2,100+ community models built on them. No 9-billion-parameter download, no GPU, no environment to keep alive.

Images generated on Diffus
Behance logoGoogle logoCanva logoSquarespace logoAmazon logo
The difference, not the spec sheet

Why Run Klein Here

The weights are open. What is not free is the disk, the card and the afternoon of setup.

2,100+ Klein Models, Already Hosted

Community checkpoints and LoRAs built on Klein 9B and 4B are on disk and selectable. Paste a Civitai link to add one that isn't.

Browse models

One Node, the Whole Workflow

Generate, edit, inpaint, outpaint and face swap from a single self-contained Klein node in ComfyUI — no graph to assemble before the first image.

Open ComfyUI

Compare It Against the Rest

Flux.1, Flux Kontext, Qwen, SDXL and SD 3.5 are in the same session. Run one prompt through several and keep what wins.

Start generating

Core capabilities

What You Can Do With It

Generation is the first step, not the whole job.

Prompt to picture

Text to Image on Klein

Prompt Klein 9B for quality or 4B when you want the lighter model, at the aspect ratio you need, with the sampler and guidance already tuned for the Flux.2 line.

Start generating
Selecting a Flux model on Diffus
Edit where you generate

Edit, Inpaint and Outpaint

The Klein node covers editing in the same place you generate — repaint a region, extend the frame, swap a face — without exporting and losing the parameters.

Open ComfyUI
Editing an image on Diffus
Bring your own LoRAs

Stack Community LoRAs

Klein has its own growing LoRA ecosystem on Civitai. Import one by URL and stack it, or fine-tune your own here and use it the moment training ends.

Browse models
A ComfyUI workflow on Diffus

How it works

Three Steps, No Setup

Nothing to download and no hardware to buy.

step 1

Pick Klein

Choose Klein 9B or 4B, or a community fine-tune built on either.

step 2

Write the Prompt

Or bring an image to edit — the same node handles both.

step 3

Generate and Refine

Inpaint, outpaint or upscale in place. Outputs land in your gallery.

Get started
Free creator tools

More Free Tools to Try

Single-purpose tools that need no setup. Describe it, click, done.

Flux 1 Image Generator

Text to image on the Flux.1 line, with community LoRAs.

Try for free

Flux Kontext Image Editor

Prompt-guided edits that keep character and style consistent.

Try for free

AI Image Generator

Text to image with community models, styles and aspect ratios.

Try for free
Explore the library

Models Built on Flux

Checkpoints and LoRAs across the Flux line, ready without a download.

Sheer Tights (pantyhose) v1.0
White-haired girl with blue eyes sitting on a subway bench with an abstract background filled with many blue eyes.
A glamorous woman in a deep red sequin dress performing with a vintage microphone on a stage with a grand piano and dramatic lighting in a retro nightclub setting.
Aka6 [Illustrious] Style LyCORIS v1.0
A cat girl character with black hair, green eyes, round rimless glasses, cat ears, and tail, wearing an off-shoulder green sweater, kneeling barefoot.
Somman v1.0
Link from the legend of Zelda BOTW [FLUX DEV] v1.0
A stylized white-haired girl with green eyes wearing a dark green overcoat stands in a snowy village at night with falling snow and illuminated lampposts.
Close-up portrait of a girl with long black hime-cut hair and red eyes drinking blood from a blood bag using a straw, dressed in a white coat and black shirt with a red necktie, set against a dimly lit dark background with soft shadows.
Quaintly Chaotic Comtesse FINAL
AyamiKojima Style v1.0
Anime Art-Style Anime_Retro
A detailed landscape painting forming a face silhouette with a snow-capped mountain ridge, an alpine lake reflecting dawn light on the left, and a shadowed pine forest with a chapel clearing on the right.
Cyberpunk stylized portrait of a bald woman with tribal patterns and big eyes, lit by pink and blue light with glasses and electrical wires attached.
MeMaXL Flat Anime Style - Noob/Illustrious/Pony/XL v4.0 B [Zootlustrious-v2]
Vanillaware Style | Anima/SDXL v2.0 [Zootlustrious-v2]
Chrome Spice v1.0
Get inspirations

Made on Diffus

Work from the community, with the model and prompt behind every image.

Close-up of a biomechanical cyborg's skull-like face with a damaged, rusted helmet split between yellow and black, glowing orange eye, and decayed mechanical and organic elements
A group of Fremen warriors in stillsuits on a sandy ridge amid a dust storm, urgently reacting as a massive multicolored gummy worm bursts from the desert sands on the planet Arrakis.
A surreal desert landscape with giant sand shark creatures and small fisherboats, surrounded by small human-like figures and rocky cliffs under a clear sky.
Close-up hyper-realistic oil painting of a young vampire girl with vibrant red hair, glowing blue eyes, pale skin, and sharp fangs, rendered in a Rembrandt style.
A hyper realistic Moluccan Cockatoo perched inside an ornate antique cage, with vibrant splashes of orange and yellow on its crest, detailed white feathers, and a vivid abstract background in purple and pink hues.
Closeup portrait of a Japanese woman with long black hair and bangs, wearing a denim jacket and white blouse, standing against neon signs on a traditional Japanese street at night with bokeh effects.
A powerful female angel with flowing white hair, clad in ornate golden armor, standing on rocky terrain with glowing golden wings and holding a large sword.
Realistic digital painting of a young woman dressed as a nun with a black habit and white headpiece, smiling broadly and sticking her tongue out playfully.
A silhouetted figure stands on rocky terrain beneath a large, colorful starry nebula cloud illuminated by neon glass filaments in a cosmic space setting.
A futuristic cyborg with glowing white and blue skin wearing a black hoodie, illuminated by chiaroscuro lighting in a dark setting.
A towering hooded dark figure stands in a desolate post-apocalyptic landscape beneath a bleeding red orb, surrounded by crumbling buildings and dark stormy skies.
Close-up of a female cyborg's mechanical face and bionic body with exposed wires and robot joints, detailed and textured with worn white plating.
Semi-realistic image of a purple-haired woman wearing black stockings, a white top with black suspenders, and a choker, sitting on the hood of a vintage red car.
Cyberpunk female android warrior with white hair, black armor with gold and orange glowing accents, holding a large sword vertically in front of her face against a black background.
Close-up portrait of a femme fatale hacker wearing a sleek leather coat, a wide-brim fedora, and round black glasses, lit with dramatic noir-style lighting.
A dark desert landscape under a night sky filled with large, translucent jellyfish glowing with soft bioluminescent light, drifting slowly above the ground.
Close-up of a woman's head and neck in a mixed media collage style, constructed from layered newsprint and bold typography with a high-contrast halftone texture and yellow geometric background.
Side profile of a female ballerina standing en pointe, depicted in red neon line art against a solid black background with a flowing dress and graceful pose.
Space explorer woman in sleek sci-fi suit stands on rocky terrain of an alien planet, with a futuristic tracked vehicle nearby and a large broken moon glowing in an orange atmospheric haze.
Oil painting of an albino Victorian girl with long white hair wearing a black corseted dress, standing over a night scene of Victorian London with intricate details and Rembrandt lighting.
Soft whimsical digital painting of a sad gothic vampire princess with delicate features and intricate details, set against a castle stone background in a Rembrandt style.
Magical fantasy scene with a giant ethereal white bunny and a small glowing black rabbit by a luminous pool in a mystical forest.
A soft digital painting of a teen female vampire with purple eyes and red hair wearing a fluffy white bathrobe and towel on her head, smiling with sharp vampire fangs against a black background in a Rembrandt style.
A woman wearing a straw hat and white linen dress sits in a brown canoe floating on a waterlily-covered lake surrounded by lush green trees and vibrant nature under bright sunlight.
Top-down satellite view of a lone rowing boat navigating a river shaped into an M.C. Escher spiral, surrounded by trees on a circular stone pathway with deep blues and greens in reflective water.
A digital illustration of a yellow armored vehicle with a large gun, standing in front of a ruined city under a dark stormy sky, with a military man in green jacket beside it.
A floating rocky island surrounded by fluffy clouds with brightly colored neon geometric pillars, set against a dark sky with stars and a crescent moon, featuring a film grain texture.
A surreal black and white desert landscape features a floating inverted island with a single tree, beneath a cosmic sky filled with a colorful glowing sphere surrounded by futuristic circuit patterns and colorful orbs.
Hyper-realistic fantasy portrait of a young woman with glowing orange eyes, wearing an intricate metallic mask and a flowing blue scarf with abstract patterns.
A serene monk balanced on one leg in a classic yoga pose, dressed in flowing robes, against a large, intricately designed yin and yang symbol detailed with ornate patterns.
Rectangular black spacecraft with antennas and hanging cables hovers low over a dusty, barren post-apocalyptic landscape with rocky terrain, powerlines, and ruined concrete buildings under a bright sky.
A massive ancient dragon with cracked obsidian-like scales and glowing red eyes confronts a lone cloaked figure with silver hair amid a vivid autumnal forest with deep red leaves and rugged rocky terrain.
Illustration of a cute neko cat with pink spots and a calm expression sitting on a red rug in a tastefully decorated room.
Silhouette of a reclining figure by a luminous golden tree with star-like forms in a dark, misty environment.
Stylized portrait of a cheetah wearing pink cat-eye sunglasses and a white fluffy bathrobe, holding a green matcha latte cup against a solid pink background.
Close-up side view of a female robot with a transparent plastic head showing a pink brain filled with wires, with metal body parts adorned with pink rose patterns on a grey background.
A cloaked solitary figure walking on a path through overgrown ruins under a dramatic stormy sky with an ancient stone tower illuminated from above in a dark fantasy painting style.
Black and white high-contrast photograph of a dynamic figure standing on wet sand at the beach, lifting one leg, with a long sharp shadow cast on the rippled sand surface.
A landscape painting featuring a serene pond surrounded by colorful wildflowers and grasses, a distant tree line shrouded in mist, and a radiant sunset sky with golden clouds, rendered in an impasto style.
A broken warrior with tattered wings stands in dusty ruins under a twilight sky, surrounded by shadows and soft bokeh highlights.

Flux.2 Klein — FAQs

Try Klein Without Downloading It

And put it next to Flux.1, Qwen and SDXL on the same prompt.

Get started

2,100+ Models

No GPU

Product screen shoot