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    [KLEIN 9b] Unchained XXX - v1.0
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    Description

    First version. KLEIN has serious issues with anatomy, extra hands, arms and fingers. Try again, new seeds generally solve the problem.

    FAQ

    Comments (72)

    cobaltpixiv520Jan 29, 2026
    CivitAI

    Any thoughts on trying ZIB? it's highly trainable from my experience

    alcaitiff
    Author
    Jan 30, 2026· 5 reactions

    Yes, It will come next.

    larrylangJan 30, 2026· 2 reactions
    CivitAI

    Woohoo. Was waiting for your Klein version. I don’t know if it’s an unpropitious or not but I prefer the look of the Klein images over z image. The skin textures just look so much better imo. Cheers GOAT!

    alcaitiff
    Author
    Jan 30, 2026

    To create new images with great photo style use a nice photo of an object as base.

    alcaitiff
    Author
    Jan 30, 2026

    If your card is 50xx blackwell use nvfp4, 3 seconds for one image

    larrylangJan 30, 2026

    @alcaitiff it is a 5070ti. But I don’t understand what you mean. Will need to check when I get home.

    alcaitiff
    Author
    Jan 30, 2026

    @larrylang https://huggingface.co/black-forest-labs/FLUX.2-klein-9b-nvfp4

    larrylangJan 30, 2026· 1 reaction

    @alcaitiff cheers mate

    AivanjoJan 30, 2026· 2 reactions
    CivitAI

    Looks amazing! This is something Flux 2 Klein really needed. Looking forward to more updates!

    MikeflowerJan 30, 2026· 2 reactions
    CivitAI

    😍 👍🏻

    speckrod212Jan 30, 2026· 3 reactions
    CivitAI

    Awesome lora! Has a lot of variety when it comes to nsfw poses/positions. Seems like there is a slight quality hit on higher weights though. Will experiment more.

    alcaitiff
    Author
    Jan 30, 2026

    It's an edit model, if you use one image as base style it will follow. This thing is very impressive.

    alcaitiff
    Author
    Jan 30, 2026

    I used this image for style in several of my examples https://civitai.com/images/114937254

    speckrod212Jan 30, 2026· 3 reactions

    @alcaitiff agreed it is very impressive at retaining style, i just hooked up a second sampler without the loras added to the model to add sharpness/improve quality so no worries. Thanks for putting this together!

    jenniferhoustonpancakesJan 30, 2026· 4 reactions
    CivitAI

    Provides better missionary images than what else is out there but still suffers from the common long barely inserted dicks problem. If I had sex like that it would drive me crazy, and not in a good way.

    alcaitiff
    Author
    Jan 30, 2026· 9 reactions

    I'm sorry, next time I'll go deeper .

    @alcaitiff Missionary POV for LTX-2 should be out within two days, maybe tomorrow. They definitely go all the way in, and there's even a slapping sound every time it goes in. Really hard to find stuff like that. 30 hours spent finding training videos, 27 137-frame segments and 43 241-frame segments. Probably too much moaning (and princesses don't have foul mouths like that,) may be addressable with text prompt.

    ForeverNecessary737716Jan 30, 2026· 3 reactions
    CivitAI

    can it do gay stuff?

    bboy206979Jan 30, 2026· 1 reaction

    just tested it. no, it attaches boobs and vaginas to everything :(

    alcaitiff
    Author
    Feb 8, 2026

    @ss9999 Not true. It learned male anatomy too.

    DrakeniJan 30, 2026· 9 reactions
    CivitAI

    I'm sorry but Klein's understanding of NSFW training blows Z-image out of the water. I like the aesthetic more too.

    Fantastic job!

    NeonScreamsJan 30, 2026· 2 reactions

    Have you tried Chroma1-HD? It has no censor.

    cobaltpixiv520Jan 30, 2026· 5 reactions

    Klein 9b won't be a thing. Too big and expensive to train (and use) for most people. Borderline horrible at anime. I don't think it'll be a thing. Chroma tried, and failed.

    DrakeniJan 30, 2026· 1 reaction

    @cobaltpixiv520 Expensive? I train it on my budget 4060, same speed as Z-image almost, and it converges way faster. It's great at anime out of the box, and even better with lora. Finetunes are already being made and I think it will turn out spectacular at anime, realism, and NSFW content.

    The 4b model is also pretty good for older hardware, especially when finetuned more.. but you can get 9b to run on pretty low vram with quantized model/TE.

    alcaitiff
    Author
    Jan 30, 2026

    NVFP4 is small and fast 2.81it/s for 1Mpx image.

    tsunamixJan 31, 2026

    @Drakeni Hey, what do you use to train 9b Loras on 4060? AI Toolkit with offloading? I've only tried 4b so far, it gives me 4.2 s/it, but I wasn't sure if 8gb would be enough for 9b.

    DrakeniJan 31, 2026

    @tsunamix in AI toolkit, I select low VRAM and enable offloading. Raise both offloading bars to 100%. It will still keep stuff in VRAM, this just gives it permission to offload 100%. No quantizing nessesary. I get about 3s/it. Not fast, but quick enough to train 1-2 lora overnight while I sleep.

    tsunamixFeb 1, 2026

    @Drakeni Thanks. I've tried different settings and so far have been getting 21 sec/it or worse (when quantizing to 3 bit, or offloading and quantizing, doesn't matter). Maybe it's because of my 32gb RAM? But it only uses, like, 17gb when the actual training starts. Or is an "edit" type of Lora (with pairs of images) harder to train?

    cai567890Feb 2, 2026

    @NeonScreams The result of chroma is always a cartoon-like plastic glass effect, making it difficult to achieve a realistic human appearance.

    NeonScreamsFeb 2, 2026

    @cai567890 I normally wouldn't get into an opinion based back and forth on someone's unrelated model's LoRA page and debate this. But someone might read your comment and take it as fact. https://civitai.com/posts/22294591 .. but um. "Always?", really?

    Besides, Chroma's strength is its NSFW range. If you ask it to show you a mutant plant railing a toaster oven in hyper-realism it's like .. (╭ರ_•́) .oO"Ay-yo.. but is the toaster on?" Whereas all the other models look at your prompt about 2-females making out and ask "mommy, what's 'french' kissing?" .oO ヘ(。□°)ヘ and then try to tell the Internet Police where you touched them on the No-No Square.

    Chroma1-HD's NSFW capability without LoRA's was the original thought behind my initial comment. And -with- Lora's, well.. I wish I was allowed to show it off. But hey, ask me for recipes! :)

    cobaltpixiv520Feb 4, 2026· 1 reaction

    I take my comment back. 9b slaps. Somehow it ran on my weenie 16gb vram card.

    brnfd24434343dFeb 18, 2026

    @cobaltpixiv520 You know, next time you could wait and test before claims :)

    rxtotx1111Jan 30, 2026
    CivitAI

    How do you train for 159000 steps, with ostris toolkit or google tpu

    alcaitiff
    Author
    Jan 30, 2026

    This model was with Ostris ai-toolkit

    rxtotx1111Jan 30, 2026

    @alcaitiff Oh nice, i was going nuts because 159000 steps its a lot of steps, how much did it took more or less?

    alcaitiff
    Author
    Jan 31, 2026

    What?

    rxtotx1111Feb 4, 2026

    @alcaitiff you marked this lora as 159.000 steps / 159 epochs

    alcaitiff
    Author
    Feb 5, 2026

    @rxtotx1111 and it's true

    rxtotx1111Feb 5, 2026

    @alcaitiff Yeah, do you know how much time it took to finish

    alcaitiff
    Author
    Feb 6, 2026

    @rxtotx1111 about 200hs

    AnimaXxJan 30, 2026· 6 reactions
    CivitAI

    Does this work for the 9b distilled model? I prefer the overall distilled look anyway.

    NarzJan 30, 2026

    AHA! i was wondering why this wasn't working right. yes - another vote for distilled version, please

    NeonScreamsJan 31, 2026

    @Narz Remember to use a zero-out conditioning node on the negative prompt when you swap to distilled. (that obvsly- cfg 1.0 & 4-steps). Oh and because its cfg 1.0, we can use the EulerCFG++ custom sampler node with alternative version. Seems to handle any 9b LoRA I toss at it with no distortions after the Sampler swap.

    NarzJan 31, 2026

    @NeonScreams ah thanks for the feedback, i'm sure that will help someone - i'm using DrawThings on the Mac, though. haven't had luck yet :/

    FantasticFeverJan 31, 2026

    Distilled is all I use. Please I'm a greedy bastard! do it!

    apo1sJan 30, 2026· 6 reactions
    CivitAI

    Wow... 159000 steps How many hours elapsed,Which GPU you used or any training settings? Image count?

    wintersmalkolm906Jan 31, 2026
    CivitAI

    Can the Lora handle smaller breasts? It seems that no matter how I prompt it, I get at least a B cup or something

    alcaitiff
    Author
    Jan 31, 2026

    I have several flat chests on the dataset. It should be capable.

    wintersmalkolm906Jan 31, 2026

    @alcaitiff That's great, is there a specific trigger word or description, perhaps? Thanks!

    ChillDesireJan 31, 2026· 1 reaction
    CivitAI

    I notice your workflows attached to the images are Edit workflows. Were you using this to edit images and make the NSFW, or is the "Edit" portion just a leftover?

    alcaitiff
    Author
    Jan 31, 2026· 1 reaction

    I used this image for style in several of my examples https://civitai.com/images/114937254

    ChillDesireJan 31, 2026

    @alcaitiff that makes sense!

    I'm getting good initial results (outside of the anatomy issues you warned of, which is a Klein issue in general), and I'm hoping to post some later tonight!

    axibaahJan 31, 2026· 4 reactions
    CivitAI

    zib version plz

    aungkhant0911Feb 1, 2026· 5 reactions
    CivitAI

    Works with Edit mode too. But you have to lower Lora strength to maximum 0.8 to do targeted editing. Otherwise, it will strip the subject completely naked, no topless / half-naked.

    kpssslavik177Feb 3, 2026· 13 reactions
    CivitAI

    I am not an expert, but as match as I know this LoRA seems to be little overtrained - you have to drop strength to 0.4 to make it not produce nude where it is not asked by prompt and I believe it is a sign of overtrain and/or overfitting.

    StanleyPainFeb 10, 2026

    Out of curiosity which LORA loader are you using?

    NeonScreamsFeb 10, 2026

    @StanleyPain i've had the same experience as OP with both RGThree's Power LoRA Loader (best one available.) and also Easy-Use's Easy-LoRA-Stack

    StanleyPainFeb 10, 2026

    @NeonScreams That's why I'm asking. I've had better luck using the built in ComfyUI one. RGThree's always required my to use 0.45 or less.

    kronos1959777Feb 11, 2026· 2 reactions
    CivitAI

    works really well at 0.5 strength.

    1.0 is kinda grainy.

    kronos1959777Feb 12, 2026· 1 reaction
    CivitAI

    wow this gives body horror with klein base but the other version works. also, use the prompt 'perfect nipples' if they look weird at first.

    naken97184823dsdsdsdsdFeb 13, 2026· 1 reaction

    You should not be making images with "base". It's for training.

    And on body horror, just increase a few steps.

    ThepottedpenguinFeb 14, 2026· 1 reaction
    CivitAI

    Cool!

    StanleyPainFeb 15, 2026
    CivitAI

    This is one of the best LORAs. Great work.

    Any chance of porting it to QWEN 2512? ;)

    gonzalonpapaleo805Feb 17, 2026· 2 reactions
    CivitAI

    Thank you for this. It's fantastic.

    ponystalk69990Feb 26, 2026
    CivitAI

    klein has horrible prompt adherence compared to ZIT, i hope thee ZIB is better than ZIT

    MysteryDonutMar 2, 2026· 3 reactions

    Try the base model and use the turbo slider LoRA. Sample the first half of steps using the base model and then use the LoRA turbo slider at 0.75 on the last half. This encourages better prompt adherence because the base model, not being distilled, is more easily guided by the prompt.

    DrakeniMar 8, 2026· 3 reactions

    You are absolutely doing something wrong. Klein prompt adherance is miles ahead of zimage, especially with the ability to quickly edit mistakes.

    bloodforce88Mar 8, 2026· 2 reactions

    Take the base version fp8 use 2 kasampler advance. Use the Turbo Lora with rank64 in the first with strength 0.15 in the second ksampler the rank128 with strength 1. For the first ksampler you use cfg 3.5-4.0 for the second cfg 1.0. Steps a total of 10-12 steps divided between both samplers, for me it works well with 6 steps in the first and 4-5 in the second. Take Dpm++2m on both with SGM uniform. In addition, I have the custom node "Flux2-Klein-Enhancer" Contrast -0.5 normalize strength to 0.10 and simply leave the rest at default. So I have perfect prompt follow and the quality is more than just good. I also tested all the resolutions and have the best quality with 1248x1824 and prompt follow-up.

    johndoeyoututube613Mar 3, 2026
    CivitAI

    With 1.0 strength, impossible to see a penis on a picture (i2i), it's always show only balls, it's normal?

    MrChikuwaMar 7, 2026
    CivitAI

    Does this work for image edit too? If so what nodes do I attach the lora loader to? (just using the default template workflow from comfy's template list)

    alcaitiff
    Author
    Mar 7, 2026· 1 reaction

    Yes it works for edit too. The LoRa loader should receive the model and feed your sampler.
    My images have wf and you can use it if you like.

    MrChikuwaMar 9, 2026

    Thank you! I will tinker around and try to figure it out, just not sure where the load image goes for image edit. Thanks again for the help!