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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.

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.

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
Cyberpunk(Photographic style) SDXL V.1.0
A person dressed in an ornate metallic steampunk outfit stands on a foggy cobblestone platform holding a detailed gun, with a vintage steam train in the background.
Digital line art illustration featuring a woman reclining on a soft surface, viewed from behind, with flowing long blue hair and silk fabric draping over her legs, surrounded by glowing bokeh lights and orbs on a white background.
Get inspirations

Made on Diffus

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

A semi-realistic female portrait in watercolor style with ink splatters and a crimson black golden background, evoking a mystical atmosphere.
A humanoid robot with cat ears and white mechanical armor sits crouched in a futuristic cockpit surrounded by advanced control panels and cables, with glowing orange eyes and a sleek black mask.
A lone explorer standing by a river under a large gnarled tree with a dramatic vintage sunset and rocky mountainous terrain in the background.
A woman in a red floral dress walks along a bright Mediterranean coastal town waterfront, with colorful boats and traditional white buildings with red roofs under a sunny blue sky.
A sci-fi landscape featuring a floating, disc-shaped vessel above a deep jungle-filled canyon with towering cliffs covered in lush green vegetation and ancient ruins embedded into the rocky walls.
Highly detailed CGI artwork of a futuristic cityscape at dusk featuring towering skyscrapers with glowing neon lights and two silhouetted figures overlooking the city from a rooftop.
A serene girl with lavender hair sitting barefoot in a moonlit field adorned with glowing butterflies and wearing an elegant floral fantasy dress.
Portrait of a woman with glowing neon orange biomechanical wiring integrated beneath her skin, against a deep black background highlighting detailed skin textures.
A mystical scene showing a giant wolf with glowing red eyes looming behind an ethereal girl with long flowing hair, sitting on a mossy rock in a dark forest bathed in red glow and moonlight.
Portrait of a red-haired princess wearing a black dress and golden crown with radiant royal jewelry, set against a mystical blue sky with glowing light effects.
Mystical shadow weaver woman with long dark flowing hair, dressed in a dark elegant outfit with red gems, surrounded by floating red autumn leaves.
Dark cyberpunk mythical creature with glowing red eyes and neon blue highlights, featuring detailed 3D rendering and surreal digital art effects.
Underwater scene featuring a detailed ship with orange sails viewed from a dynamic angle, using a limited palette and negative space, with a blurry foreground.
Astronaut in a spacesuit sitting inside the drum of a washing machine indoors, portrayed with a monochrome blue aesthetic and painterly style.
A photorealistic portrait of a female character with glowing blue eyes and half of her face painted like a red skull with intricate designs, wearing a dark cloak with ornate skull-themed patterns, long braided hair, set against a black background.
A boy stands alone in a vast sunflower field during golden hour, surrounded by softly lit sunflowers and hazy sky, evoking solitude and contemplation.
Wildlife painting of a solitary saltwater crocodile with armored scales lying on sandy mudflats near calm water, tropical reeds and pandanus palms under warm evening light, created in a coastal dot wave style.
Rusty, weathered steam train with glowing headlight traveling through a foggy mountain canyon with dense mist and rugged terrain.
A surreal oil painting of East Asian architecture perched on a cliff overlooking a majestic waterfall surrounded by lush jungle under a starry night sky.
A young woman with long blonde wavy hair stands in a grand hallway lined with oversized black and white chess pieces on a marble checkered floor, dressed in black with ripped jeans, under dramatic warm lighting.
Hyper-realistic oil painting portrait of a half-robot albino tween girl with intricate details and delicate features on black background in Rembrandt style.
Jelly Hoshiumi with blue gradient hair and yellow star antennae swings joyfully on a pastel yellow swing suspended in a dreamy sky playground with glowing clouds and soft stars.
Digital impressionistic painting of a cherry blossom tree with vibrant pink flowers and loose brushwork against a soft pastel sky.
Playful fluffy white creatures with big yellow eyes running joyfully through a bright green meadow filled with flowers under a sunny sky.
Silhouette of a samurai training with his katana at sunrise, depicted in sepia ink splash style with reflection on water and rice fields in the background.
A dark-armored demon knight with glowing red eyes stands on a cliff at sunset, holding a large black battleaxe engulfed in flames. A swarm of rats nests at his feet, overlooking an elven city in the distance.
A male figure with black hair, wearing a kimono, stands in a vibrant flower field holding red flowers with shadows cast on the ground in a dutch angle scene.
Platinum-haired elf warrior wearing intricate dark steel plate armor with Celtic engravings and a crimson velvet cloak, standing on a ruined castle battlement under a golden sunset, holding a large two-handed sword.
A beautiful cyborg woman with a robotic arm and neck, wearing a binary code patterned shirt, sitting inside a futuristic car with neon city lights in the background.
Black woman sitting inside a cab looking directly at the camera, captured in black and white with moody lighting and a vintage car interior.
A girl stands on a circular stone platform surrounded by shattered glass shards flying upward through a large circular stone portal, set in a dreamy space with broken glass platforms and a blue sky.
Close up of a cyberpunk futuristic Geisha with reflective blackened alloy robotic details, wearing a flowing teal and black kimono, featuring stainless steel and polished chrome finishes.
A weathered window with a potted plant on the sill, overlooking a sprawling cityscape under soft diffused lighting.
Flat vector illustration of a green-skinned goblin girl with purple hair holding a paintbrush dripping pink paint, standing on a colorful splash of paint against a dark brick wall background.
Digital artwork of a solitary girl with extremely long yellow hair and white robes sitting cross-legged on a rock, illuminated by a yellow lightning strike in a surreal evening mountain lake setting with dramatic lighting.
Black and white surrealist illustration of a solitary hooded figure in a flowing cloak standing at the center of concentric ripple-like rings with intricate scrollwork, under dramatic side lighting.
Back view of a blonde woman with wavy hair and a small white dog standing on a grassy ridge, overlooking a vibrant green and blue landscape under a sky with large yellow clouds, rendered in French comic style with bold outlines and flat colors.
Low-angle Dutch tilt photo of a young African American man with textured curly hair wearing a dark brown leather hooded jacket, leaning on a balcony railing with a dense cityscape background.
Watercolor painting of a side profile of an Asian woman wearing a traditional conical straw hat and holding a katana, rendered with expressive ink wash and earth tones.
Oil painting of a light-skinned red-haired woman indoors, wearing a sheer black lace dress, with hands styling her hair, next to furniture and a vase of flowers.

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