Airfuck's Brute Mix (ABM)
Model development is a lot of work. Beer makes it easier 🍺😘
This beginner-friendly model is great at generating male-focused scenes. Men tend to be muscular by default and the model likes to reveal dicks and asses - so be prepared to see some dicks even if you did not prompt for them.
You can achieve a variety of body types, poses and even sexual acts by prompting accordingly. The style has a brute touch to it: Men tend to be masculine, raunchy and rough. Images look gritty, muscles and dicks are often huge. Use the prompt if you wish to tone that down or exaggerate it even further. This model is not suited for women because they tend to grow dicks. You have been warned!
Compared to my Airfuck's Wild Mix this one is a little bit less responsive to your prompt and also a little less versatile (prove me wrong!). The HDR style might go over the top for some of your images. On the plus side it is really good for large dicks and also handles groups of men quite well. The model is very sexual and although it still struggles with sexual position (especially when more then two people are involved), you can get lucky with lewd pics pretty often.
Tips for model usage
Simple and short prompts without the usual "incantations" (like "masterpiece, 4k, ...") can bring you a long way. Also try to be light on the negatives, only include them if you can't achieve your desired look otherwise. Beware of negative textual embeddings - they may change style and content considerably.
The model likes to reveal dicks. If you find they are of weird shape, try to explicitly include penis in the prompt or move it further up in the prompt. Flaccid dicks are a bit harder to generate: Try to use flaccid without "penis" in the positives and erection in the negatives. Realistic or even small dick sizes are still problematic. You shouldn't need LoRAs for generating convincing junk though. The model is still compatible to a wide range of LoRAs if you wish to use them.
The model defaults to masculine guys. Prompt accordingly to prevent that. Use beefy to fatten up your guys (this is different than my Airfuck's Wild Mix!).
Settings that work well are:
Sampling Method: DPM++ SDE Karras
Sampling Steps: ⪰ 20
CFG Scale: between 5 and 7 (don't go too high here)
I usually use resolutions between 512x512 and 768x768 and upscale using the following settings - feel free to change if you have a beefier GPU:
Restore faces: on
Hires. fix: on
Upscaler: R-ESRGAN 4x+
Hires steps: 10
Denoising strength: 0.5
Upscale by: 1.5
I also recommend the Face Editor and ADetailer extensions for Automatic1111 - the latter becomes especially useful with the penis refiner model.
Credits
Following models are in the mix:
Thanks to all data taggers, model trainers and creators, and Open Source Stable Diffusion enthusiasts - without you none of this would be possible!
Also thanks to all the nice people in the Unstable Diffusion Discord #men-only channel. Your feedback, ideas, prompts and company are invaluable! 🥰