Model Description

A conversion to rectified flow of the Chenkin 0.2

For main model description please refer to this model repo.

RF allows this model to get away from greyness of the base EPS solutions, provides vivid colors and unlocks better lighting adherence, like very dark or contrasty scenes, while not requiring training-time tricks like offset noise.

It also allows to sustain high stability at wide range of CFG, while not suffering from common downfalls of other base models:

Developed by: Cabal Research (Bluvoll, Anzhc)
Compute provided by: Chenkin, Heathcliff
License: fair-ai-public-license-1.0-sd
Finetuned from model: ChenkinNoob-XL-V0.2

Bias and Limitations

Standard biases and limitations of Danbooru dataset apply.

Community Guide

Basic and standalone getting started guide.
Reserved for Chenkin and nian__gao233

Getting Started Guide

Model Output Examples

Some of the examples provided by our testers:

Prompt
1girl, dragon horns, white horns, gradient horns, dragon wings, red wings, pink hair, bob cut, wavy hair, (fluffy hair:0.4), hair between eyes, pointy ears, red eyes, slit pupils, white serafuku, red neckerchief, school uniform, solo, sitting, looking to the side, scenery, white leg warmers, knees to chest, loafers, shorts under skirt, (wide shot:0.85), dragon tail, three-quarter view, cloud, hugging own legs, ocean, wide shot, masterpiece, best quality

Negative Prompt
worst quality, lowres, normal quality, watermark, signature

Prompt
say hana, indai (3330425), konya karasue, (kasane teto:0.8), 1girl, red trim, twintails, red hair, shirt, drill hair, twin drills, ahoge, close up, one eye closed, red eyes, white pupils, blush, smile, teeth, own hands together, heavy breathing, winter, brown scarf, winter clothes, head tilt, looking at viewer, sidelighting, dappled sunlight, snow, wind, hair ornament, hair flower, yellow flower, masterpiece, best quality, aesthetic

Negative Prompt
watermark, twitter username, artist name, signature, low quality, worse quality

Prompt
ebifurya, hotate-chan, (quasarcake:0.3), (wlop:0.2), oil painting \(medium\), aesthetic, excellent, year 2025, newest, 1girl, solo, morgan le fay \(fate\), upper body, lying, blue rose, flower, grass, white hair, crown, blue eyes, dark, from above, looking at viewer, arms up,

Negative Prompt
lowres, watermark, artist name

Prompt
tamomoko, flowersbloodart, shchritt, phosphophyllite, phosphophyllite \(ll\), houseki no kuni, 1other, alternate body fluid, black background, blue hair, blue theme, colored eyelashes, colored tears, crying, double exposure, facing to the side, field, glowing, glowing body fluid, glowing eyes, glowing tears, grass, light particles, looking ahead, close-up, night, portrait, profile, sky, solo, white eyes, wind, best quality, aesthetic, excellent

Negative Prompt
low resolution, worst quality, bad quality, signature

Prompt
atmospheric layer, galaxy, no humans, planet, scenery, space, star \(sky\), best quality, masterpiece, aesthetic, excellent

Negative Prompt
low resolution, worst quality, bad quality, signature

Prompt
ebifurya, hotate-chan, (shimhaq:0.3), (quasarcake:0.3), (wlop:0.3), aesthetic, excellent, year 2025, newest, backlighting, lens flare, chromatic aberration, 1girl, sona \(league of legends\), league of legends, portrait, closed eyes,

Negative Prompt
lowres,

Prompt
ebifurya, hotate-chan, (shimhaq:0.3), (quasarcake:0.3), (wlop:0.3), aesthetic, excellent, year 2025, newest, 1girl, evelyn chevalier, zenless zone zero, animal, ass, bird, black jacket, black pants, blonde hair, blue eyes, blue sky, braid, breasts, cloud, evening, from behind, hand on own hip, jacket, jacket on shoulders, outdoors, pants, shirt, short hair, sky, sleeveless, sleeveless shirt, solo, white shirt

Negative Prompt
lowres, watermark, artist name

Prompt
newest, aesthetic, ebora, try \(lsc\), gotoh hitori, 1girl, chibi, chibi, chibi, smile, happy, full body, (negative space:1.2),

Negative Prompt
lowres, worst quality, low quality, watermark, expressionless, no pupils, artist name, speech bubble, english text, korean text, yunomi, sound effects, censored, writing, loli

Prompt
watercolor \(medium\), aesthetic, excellent, year 2025, newest, scenery, detailed background, no humans, field, genshin impact, blue sky, cloud, grass, flower,

Negative Prompt
worst quality, low quality, @_@, multiple views, 4koma,

Prompt
shchritt, yao liao wang, hua ming wink, 1girl, senko \(sewayaki kitsune no senko-san\), casual, shirt, pants, seiza, fox girl, fox tail, fox ears, fluffy tail, ears down, holding own tail, hugging own tail, outdoors, garden, stone, grass, flowers, tree, tree shade, closed eyes, relaxing, against tree, on grass, wide shot, masterpiece, best quality

Negative Prompt
worst quality, lowres, normal quality, watermark, signature

Prompt
year 2025, high resolution, newest, aesthetic, try \(lsc\), ebora, oyama mahiro, 1girl, :d, animal costume, animal hands, blonde hair, blush, breasts, brown eyes, collarbone, gloves, hair between eyes, heart, long hair, looking at viewer, onesie, open mouth, paw gloves, paw sleeves, smile, solo, trick or treat, wolf costume, wolf hood, cloud, tail

Negative Prompt
lowres, worst quality, low quality, watermark, expressionless, no pupils, artist name, speech bubble, english text, korean text, yunomi, sound effects, censored, writing, loli

Prompt
yuming li, (itowo \(itowc\):0.8), godiva ghoul, (watanabe tomari:0.7), oil painting \(medium\), aesthetic, excellent, year 2025, newest, colorful, dark, 1boy, knight, holding sword, moonlight greatsword, armor, faceless, horned helmet,

Negative Prompt
worst quality, low quality, @_@, multiple views, 4koma,

Prompt
1girl, futatsuiwa mamizou, touhou, tanuki, japanese clothes, green kimono, white trim, smile, \:3, detached sleeves, lotus position, crossed legs, arm support, head on hand, hand on own knee, brown eyes, miniskirt, (newest:1.3), masterpiece, best quality, very aesthetic, (nora higuma:0.6), tsukumizu yuu, (wlop:0.6), (ohisashiburi:0.6),

Negative Prompt
halftone, scanlines, pixel art, depth of field, (flat colors, flat color:1.2), (worst aesthetic:1.3), (old, early, lowres:1.3), logo, print, eyeliner, (anime screencap:1.3), (worst quality,bad quality,low quality:1.2), bad anatomy, compression artifacts, jpeg artifacts, rough sex, motion lines, afterimage, twitching, trembling, motion outline, sketch, (oekaki, jaggy lines:1.3), text, doujinshi, commentary, blurry,motion blur, (@_@, spiral eyes:1.2), watermark, signature, unfinished, censored,

Prompt
egomeshi, oil painting \(medium\), year 2025, aesthetic, excellent BREAK 1girl, hatsune miku, aqua hair, blue eyes, blush stickers, collared shirt, eyepatch, fisheye, freckles, hair between eyes, heart, looking at viewer, medical eyepatch, open mouth, pov peephole, shirt, solo, star \(symbol\), dark, glitch

Negative Prompt
lowres, sketch

Prompt
watanabe tomari, aesthetic, excellent, year 2025, newest, 1girl, school uniform, colorful, closed eyes, smile,

Negative Prompt
low quality, worst quality, @_@, multiple views, 4koma,

Prompt
ebifurya, hotate-chan, (shimhaq:0.3), (quasarcake:0.3), (wlop:0.3), aesthetic, excellent, year 2025, newest, dark, dim lighting, 1girl, xayah, league of legends, portrait, looking at viewer, half-closed eyes, hand up, holding feather, black background,

Negative Prompt
lowres,

Prompt
tamomoko, flowersbloodart, shchritt, touhou, inubashiri momiji, 1girl, autumn leaves, blurry background, branch, facing away, from behind, long sleeves, maple leaf, red hat, short hair, solo, tokin hat, upper body, white hair, wolf ears, wolf girl, wolf tail, tongue out, best quality, aesthetic, excellent

Negative Prompt
worst quality, bad anatomy, (jpeg artifacts:0.7), watermark, sketch

Prompt
anime screenshot, kita ikuyo, 1girl, bass guitar, black hoodie, blush, closed mouth, cowboy shot, floating hair, floral print, green eyes, guitar, hair between eyes, holding instrument, holding plectrum, long hair, long sleeves, looking at viewer, miniskirt, thighs, wind, multicolored hair, one side up, pleated skirt, print hoodie, red hair, shoulder strap, outdoors, smile, solo, standing, white skirt, yellow eyes, stage, sunlight, blue sky, sidelighting, bloom, masterpiece, best quality, aesthetic

Negative Prompt
watermark, twitter username, artist name, signature, low quality, worse quality

Prompt
ebora, 1boy, black hair, black pants, cloudy sky, collared shirt, cowboy shot, facing away, from behind, holding bouquet, midriff peek, ocean, outdoors, shirt lift, short hair, sky, solo, white shirt, wind, wide shot, masterpiece, best quality, aesthetic

Negative Prompt
watermark, twitter username, artist name, signature, low quality, worse quality

Prompt
sakiya \(sak1 01\), john kafka, kasane teto, 1girl, simple background, black background, dark theme, dark, blue hair, broken skin, portrait, red eyes, red hair, solomasterpiece, best quality

Negative Prompt
worst quality, bad anatomy, (jpeg artifacts:0.7), watermark, multiple horns

Prompt
negative space, 1girl, bags under eyes, black background, closed mouth, collared shirt, colored eyelashes, drill hair, expressionless, grey shirt, hand up, looking at viewer, neck ribbon, one eye covered, purple choker, purple flower, purple hair, purple ribbon, purple theme, ringed eyes, short hair, solo, upper body, upturned eyes, best quality, aesthetic, excellent

Negative Prompt
worst quality, bad anatomy, (jpeg artifacts:0.7), watermark

Prompt
tamomoko, flowersbloodart, shchritt, mahou tsukai no yome, elias ainsworth, hatori chise, adder stone, animal head, animal skull, black robe, black skirt, blurry, blurry background, blush, carrying, princess carry, green, couple, gloves, glowing eyes, headscarf, horns, loose clothes, red hair, red headscarf, red sweater vest, robe, shirt, skirt, skull head, socks, sweater vest, white gloves, white shirt, white socks, best quality, aesthetic, excellent

Negative Prompt
worst quality, bad anatomy, (jpeg artifacts:0.7), watermark, sketch

Prompt
(tamomoko, flowersbloodart, shchritt:1.1), 1girl, holding, holding stuffed toy, (ikea shark:1.1), indoors, bedroom, pink hair, slit pupils, dragon girl, dragon horns, gradient horns, dragon tail, dragon wings, covered mouth, hair between eyes, upturned eyes, looking at viewer, head tilt, heart, long sleeves, oversized clothes, sweater, red eyes, wariza, sitting, sleeves past fingers, sleeves past wrists, white leg warmers, thighs, short hair, zettai ryouiki, white horns, solo, red wings, red tail, feet, toes, best quality, aesthetic, excellent

Negative Prompt
worst quality, bad anatomy, (jpeg artifacts:0.7), watermark, sketch, multiple horns, asymmetrical horns, straight-on, loli

Prompt
ebora, 1girl, charlotta (granblue fantasy), tall crown, smile, blue eyes, blonde hair, upper body, hand on own hip, scenery, masterpiece, best quality, aesthetic

Negative Prompt
watermark, twitter username, artist name, signature, low quality, worse quality

Prompt
(@nekotoufu, flat color:0.6), 1girl, oyama mahiro, solo, haru urara \\(umamusume\\) \\(cosplay\\), pink hair, ahoge, horse tail, horse ears, animal ears, holding phone, smartphone, looking at phone, outdoors, bokeh, depth of field, track suit, pink tracksuit, racetrack

Negative Prompt
nude, chest, bare chest, nipples, lewd

Prompt
vihua6, 1girl, asymmetrical hair, brown hair, chemise, expressionless, glitch, melting, short hair, single sidelock, sitting, sleeveless dress, solo, strap slip, surreal, white dress, hair ornament, masterpiece, best quality, aesthetic

Negative Prompt
watermark, twitter username, artist name, signature, low quality, worse quality

Prompt
newest, aesthetic, try \(lsc\), 2girls, fern \(sousou no frieren\), frieren, dark , back-to-back, looking at viewer, pointy ears, blunt bangs,

Negative Prompt
lowres, worst quality, low quality, watermark, expressionless, no pupils, artist name, speech bubble, english text, korean text, yunomi, sound effects, censored, writing, loli

Prompt
godiva ghoul, aesthetic, excellent, year 2025, newest, greyscale, dark background, 1girl, dragon horns, slit pupils, upper body, animal hands, scales, reaching towards viewer, looking at viewer, hair between eyes, claws, cleavage, grin, sharp teeth,

Negative Prompt
worst quality, low quality, @_@, multiple views, 4koma,

Prompt
otonoha aika, (neg \(101neg\):0.4), lapis lazuli \(houseki no kuni\), 1other, black hair, black nails, blue hair, closed eyes, closed mouth, colored skin, hair between eyes, head tilt, long hair, multicolored hair, simple background, smile, solo, topless female, two-tone hair, upper body, very long hair, white background, white skin, best quality, aesthetic, excellent

Negative Prompt
worst quality, bad anatomy, (jpeg artifacts:0.7), watermark, sketch

Prompt
year 2025, high resolution, newest, aesthetic, try \(lsc\), ayase momo, 1girl, black choker, blue skirt, brown eyes, brown hair, choker, clenched hand, cowboy shot, crossed bangs, debris, earrings, fighting stance, hair behind ear, hair between eyes, jewelry, kami high school uniform, looking at viewer, miniskirt, open hand, <break> outstretched arm, outstretched hand, pink sweater, pleated skirt, rock, school uniform, serious, skirt, solo, sweater, from above, foreshortening

Negative Prompt
lowres, worst quality, low quality, watermark, expressionless, no pupils, artist name, speech bubble, english text, korean text, yunomi, sound effects, censored, writing, loli

Recommendations

Inference

Comfy

(Workflow is available alongside model in repo)

Same as your normal inference, but with addition of SD3 sampling node, as this model is Flow-based.

Recommended Parameters:
Sampler: Euler, DPM++ SDE, etc.
Steps: 20-28
CFG: 3-6
Shift: 3-8
Schedule: Normal/Simple/SGM Uniform/Beta Positive Quality Tags: masterpiece, best quality, aesthetic

Negative Tags: worst quality, normal quality, bad anatomy, low resolution

A1111 WebUI

(All screenshots are repeating our other RF release, as there is no difference in setup)

Recommended WebUI: ReForge - has native support for Flow models, and we've PR'd our native support for Flux2vae-based SDXL modification.

How to use in ReForge:

(ignore Sigma max field at the top, this is not used in RF)

Support for RF in ReForge is being implemented through a built-in extension:

Set parameters to that, and you're good to go.

Recommended Parameters:
Sampler: Euler Comfy, Euler, DPM++ SDE Comfy, etc. ALL VARIANTS MUST BE RF OR COMFY, IF AVAILABLE. In ComfyUI routing is automatic, but not in the case of WebUI.
Steps: 20-28
CFG: 3-6
Shift: 3-8
Schedule: Normal/Simple/SGM Uniform/Beta Positive Quality Tags: masterpiece, best quality, aesthetic
Negative Tags: worst quality, normal quality, bad anatomy, low resolution

ADETAILER FIX FOR RF: By default, Adetailer discards Advanced Model Sampling extension, which breaks RF. You need to add AMS to this part of settings:

Add: advanced_model_sampling_script,advanced_model_sampling_script_backported to there.

If that does not work, go into adetailer extension, find args.py, open it, replace _builtin_scripts like this:

Here is a copypaste for easy copy:

_builtin_script = (
    "advanced_model_sampling_script",
    "advanced_model_sampling_script_backported",
    "hypertile_script",
    "soft_inpainting",
)

Or use this fork of Adetailer - https://github.com/Anzhc/aadetailer-reforge

Training

Training Details

Samples seen(unbatched steps): ~47 million samples seen
Learning Rate: 2e-5
Effective Batch size: 1376
Precision: Mixed BF16
Optimizer: AdamW8bit with Kahan Summation
Weight Decay: 0.01
Schedule: Constant with warmup
Timestep Sampling Strategy: Complicated, first 2 epochs are "Logit Normal", epoch 3 onwards is "Uniform"
SD3 Shift: 2
Text Encoders: Frozen
Keep Token: False
Tag Dropout: 10%
Uncond Dropout: 10%
Shuffle: True