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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.

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Images generated on Diffus
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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.

A detailed digital illustration of a female angel with black and red hair, red eyes, white feathered wings, a cracked floating halo, wearing a black vest, white shirt, and red tie, featuring visible tattoos and scars on her arms.
Temogam Art Style v2.0
[Pony] Geekpower Artists Style Optionaltypo
Terrifying Clown (FLUX) flux v1
Nani Pelekai (Lilo & Stitch) - Lora Illustrious Illustrious
Akabur Style PDXL, Illustrious Akabur V2.5
Frank Flux-etta V1
A surreal abstract portrait of a young woman with platinum blonde hair and pale skin, her face partially obscured by bold, colorful horizontal brushstrokes in yellow, blue, red, green, and white against a dark background.
biostuff experiments - mushroom house v0.1 mossystuff
Shrekman Style MIX v1.1pony
Woman in a pink summer dress with lace trim, wearing a straw hat and large hoop earrings, with chestnut hair and olive skin, leaning against a textured wall.
See through blouse - no bra V0.1
Cherry-Gig Style for PonyXL v1.0
MorgyMix-illustriousXL v4.1-Painterly-AAAAAAAAAA
Makima (Chainsaw Man) Flux LoRA v2.0
xijie_Platinum v1.0
Close-up of a young woman with brown hair and hoop earrings wearing a white Adidas jacket with yellow stripes, playfully sticking out her tongue in a car.
DnD_Grainyboyz Lora FLUX DnD_Grainyboyz V1.0
Wizard's Experimental Photography Lab Portraits
Get inspirations

Made on Diffus

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

A geisha dressed in traditional kimono serving tea in an Old Japan style temple with sliding shoji screens and a wooden table.
A bonsai tree in a pot situated in front of a traditional Japanese shrine with wooden architecture, under a rainy late afternoon sky.
A mystical elven princess with silver-white hair in a sapphire blue gown adorned with silver filigree gently cradles the face of a majestic black panther under a bright full moon with twin crescent moons in the starry night sky.
A fierce young woman with fiery red hair and golden eyes stands close to a majestic parrot with molten gold and orange feathers and flaming plumage, both set against a dark background illuminated by floating embers.
Photorealistic image of a pale young woman with long black hair, demonic horns, and bat-like wings wearing a white lace dress, standing on a pile of skulls with a creepy castle in the foggy background.
Intricate ornamental design of a playing card featuring a geometric humanoid figure with sacred geometry patterns, metallic textures, and sharp angles in hyperrealistic digital art style.
A powerful winged angel with dark wings and a sword, set against a dramatic red apocalyptic sky and rocky terrain.
A futuristic astronaut in a reflective metallic chrome suit seated on an opulent golden throne with intricate detailing against a vibrant cosmic space background.
A glowing white-winged angelic figure stands amidst cracked ruins holding a luminous horizontal sword, surrounded by a dark, mysterious, cinematic environment.
Anime-style female character with dark hair, wearing kaleidoscopic sunglasses and licking a pink and white lollipop, her transparent face blending into a vivid liquid dreamscape of colors and lights.
A minimalist digital artwork showing a female knight in a black Roman helmet and white armor, standing centered on a sharp vertical color split with pastel pink on the left and deep navy blue on the right.
A futuristic digital portrait featuring a yellow gradient face with glowing eyes, rendered with geometric shapes and a dark moody background.
Silhouette of a woman standing in a field at sunset, partially obscured by vertical light streaks, with a cabin lit warmly in the background.
Portrait of a young woman with short wavy blonde hair and blue eyes, wearing a dark grey wool coat, standing amidst blurred city street silhouettes with golden bokeh lights and reflective glass glare.
Close-up of a supermodel wearing a metallic outfit with golden barbed-wire covering her eyes and plasma-like glowing fangs, sitting on a golden throne with vibrant magic bokeh effects.
A lone figure standing on a desert dune enveloped in a vast, ethereal caramel-colored fog with soft shadows.
A surreal landscape featuring a winding wooden path over reflective caramel-colored water, surrounded by leafless trees and red reeds, with a large subtle red sun in a pale sky and a misty background.
Majestic warrior with silver hair and antlered crown rides a massive snow-white owl with golden eyes, set against a night sky illuminated by auroras over snowy mountains.
A narrow glowing yellow-orange light streak resembling sunlight pierces through a misty cliff gap, surrounded by dark rocky rockfalls and green vegetation under a soft, surreal atmosphere with depth of field.
Digital portrait of a blue-skinned man wearing a black suit and a tall chrome crown against a vivid red background.
Mysterious cyberpunk cultist nun with a golden chained veil, wearing a futuristic black and white overcoat in a dense jungle illuminated by red neon light.
Hyper-realistic portrait of a colossal chrome knight with surreal armor, purple scarf, and yellow robe inside a dim castle interior.
A detailed portrait of a young woman with blue eyes wearing a floral crown and a fur coat, illuminated with soft, cinematic lighting.
A whimsical caricature featuring a large, blue and orange cute fish with exaggerated eyes, accompanied by three smaller colorful fish.
A girl with very long red hair tied in a folded ponytail wearing a green flower dress and a backpack standing on a rooftop during sunset with bokeh lights and blurry background.
A hyperrealistic cybernetic robotic arm and hand with red paint dripping, holding a transparent glass cube against a soft, light background with shallow depth of field.
A stylized white fantasy animal with red eyes and sharp claws stands confidently on a white background, rendered in detailed PastelInk style.
Black and white photograph of a tattooed punk rock woman sitting on a tall wooden stool with combat boots, styled with pigtails and dramatic makeup.
White cat with black markings standing on a smooth white curved balcony overlooking a calm blue sea under a gray sky, shot in analog film style with natural light and film grain.
Photorealistic scene of an astronaut sitting on a rocky mountain peak on Mars with a vast mountainous landscape, clouds, a large moon, starry cosmic sky, and an alien spaceship flying overhead.
Young Rapunzel in an elegant silk kimono kneels inside a tatami room, holding a black Easter egg decorated with gold flowers, bathed in warm light.
A red-haired woman in a teal Victorian dress sleeps peacefully on moss-covered rocks, embraced by a large whimsical black creature with glowing eyes in an ancient forest filled with wildflowers and morning mist.
A lone traveler stands on rocky terrain overlooking a vast alien desert with tall black obelisks emitting blue glowing inscriptions under a stormy purple and blue sky with lightning and distant mountains.
A towering futuristic crystalline spire glowing softly against a twilight sky, reflected perfectly in calm water with a glowing lotus flower in the foreground.
Highly detailed futuristic sci-fi cityscape at dusk featuring towering skyscrapers, sleek flying vehicles with red lights, and a metallic river reflecting dramatic orange and purple clouds.
A young woman with fair skin in an elaborate blue and white Victorian-style gown poses gracefully in a luxurious room decorated with white flowers and ornate furniture.
Hyper-detailed surreal cybernetic portrait of a female figure integrated with biomechanical elements and a technological charging station, set against a cloudy sci-fi backdrop.
A woman with short brown hair stands on a wet urban street at night holding a large black umbrella. She wears a black wool poncho, beige ruffled skirt, white leg warmers, and black patent leather heels, with illuminated city signs in the background.
A confident woman wearing a black hijab, fishnet stockings, and stiletto heels holds a knife against a dark blue gradient background with dramatic lighting.

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