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Pixel Alchemy 30
Recommended settings :

·         Sampler: dpmpp_2m_sde_gpu

·         Scheduler : sgm_uniform

·         CFG: 4

·         Steps: 30 - 40

Pixel Alchemy Hyper V20 & V22
Improvement of human body and hands from the merger of the unreleased Pixel Alchemy V2.0 and Hyper-SDXL-12 steps CFG LoRA

Settings (ComfyUI) : Sampler : heunpp2, ddim, Euler/ Scheduler : sgm_uniform, ddim_uniform, simple / Steps : 16 to 20 / cfg : 2.5 to 3
For A1111, I won't be able to give any recommendations, because I don't use it, but I think that with a few tests you will end up finding what works best.

Pixel Alchemy Hyper V16
It's a merging of Pixel Alchemy V1.6 model with 2 LoRAs :

Hyper-SDXL-12 steps CFG LoRA : https://huggingface.co/ByteDance/Hyper-SD/blob/main/Hyper-SDXL-12steps-CFG-lora.safetensors

Hand Detail XL LoRA : https://civitai.com/models/260852/hand-detail-xl-lora

Settings (ComfyUI):
Sampler : ddim / Scheduler : ddim_uniform / Steps : 20 / cfg : 3
Sampler : Euler / Scheduler : Simple / Steps : 14 / cfg : 2.5
Sampler : heunpp2/ Scheduler : sgm_uniform / Steps : 18 / cfg : 2.5

but feel free to test others settings, specially for A1111

Pixel Alchemy V16
Version 1.6 of Pixel Alchemy brings a significant improvement in the rendering of photorealistic portraits, the texture of the skin appears more natural.

It's a merging of Pixel Alchemy V1.3 with 1 checkpoint and 2 LoRAs

RealVisXl model : https://civitai.com/models/139562?modelVersionId=344487

Steve McCurry - Photography SDXL LoRa : https://civitai.com/models/213283/steve-mccurry-photography-sdxl-lora?modelVersionId=240247

Essenz - Better Photography (Style LoRa for SDXL 1.0) : https://civitai.com/models/198378?modelVersionId=250573

Pixel Alchemy V13
It's a merge of 4 checkpoints and 3 LORAs (see list below).
One of the main goals is was to obtain a very versatile checkpoint. It's NSFW one.

Quite efficient in rendering landscapes, realistic portraits, surrealism and gives better results with noise reinjection in ComfyUI (see below, the recommended extension)

All my uploaded images were generated with low strength ADetailer (Eyes / hands / Face).

Models merged in:
Omnium : https://civitai.com/models/194245/omnium

Realism Engine SDXL : https://civitai.com/models/152525/realism-engine-sdxl

Crystal Clear XL : https://civitai.com/models/122822/crystal-clear-xl

Juggernaut : https://civitai.com/models/133005?modelVersionId=348913

LoRAs merged in:
Detail Tweaker XL : https://civitai.com/models/122359/detail-tweaker-xl

xl more art-full / xl_real / Enhancer : https://civitai.com/models/124347/xlmoreart-full-xlreal-enhancer

 SDXL Film Photography Style : https://civitai.com/models/158945/sdxl-film-photography-style?modelVersionId=180569

Recommended settings :
·         Sampler: dpmpp_2m / Euler / heunpp2 / dpmpp_3m_sde_gpu

·         Scheduler : Karras / Exponentiel / sgm_uniform

·         CFG: 5 - 7

·         Steps: 36 - 46