This SD 1.0XL-Checkpoint is capable to produce nearly everything.. It is very good creating extremly realistic pictures, anime and art. But beware! This model is still untamed... uncensored.. be aware of that!

Hephaistos NextGen DPO is a merge between my own Hephaistos NextGen Tensor 1.0 model https://tensor.art/models/671019109045166017 and the new DPO model https://huggingface.co/mhdang/dpo-sdxl-text2image-v1 .

Also it got some parts of freek22s model Gleipnir

https://civarchive.com/models/175094/gleipnir

Lately I also experimented with LCM and created some hybrid models with it. This model here also benefits from its LCM part.

What is DPO?

This stands for Direct Preference Optimization. Its basically a very optimised training method for getting better outputs..

Here you can get the full scientific paper: https://arxiv.org/abs/2311.12908

What is LCM?

Basically LCM allows models to operate in much lower cfg and steps.. this way this model is faster than normal checkpoints. I've tested in with A1111 and comfy.

How to use it?

Here is a cfg/step example from my tests with the DPM++ SDE sampler (other sampler can work a bit differently. Keep that in mind) klick here https://civarchive.com/posts/1053066

As you can see it has a wide range starting from 1 cfg and about 4-5 steps.. But I for a better quality I recommend using at least 8 steps and 3- 8cfg. As you can see the quality can increase with higher steps. Use clip Skip 2.

Comfy workflow:

A prototype Comfy UI workflow can be downloaded here: https://civarchive.com/articles/3492/hephaistos-nextgen-dpo-prototype-workflow

Working samplers: Here is a list of working samplers..

I highly recommend use one of the following samplers: DPM++ SDE Karras, DPM++ SDE, DPM++ 2S a Karras, DPM++ 2S a

3-7+ cfg, 7-12+ steps, Clip Skip 2, use a highresfix with 0.2- 0.5 denoise and use the foolhardy-Upscaler.

Don't use following samplers:

DPM++ 2M, LMS, Heun, DPM++ 2M SDE, DPM++ 2M SDE Heun, DPM fast

Credits:

Thanks to the LCM Team for making all this possible. Here is their website: https://latent-consistency-models.github.io/

Thanks to the creators of the DPO model https://huggingface.co/mhdang/dpo-sdxl-text2image-v1 .

Thanks to Freek22, Check out his models too... https://civarchive.com/user/freek22

This model is trained on my first Hephaistos NextGen was Colossus Project XL so I will credit all creators (the stuff I used for Colossus Project XL). Those works are still inside the model somehow...

Realistic Stock Photo by PromptSharingSamaritan

https://civarchive.com/models/139565?modelVersionId=154593

NewdawnXL by freek22

https://civarchive.com/models/120741?modelVersionId=163104

Those resources I used to create Hephaistos, Talos and Asmodeus:

FenrisXL by freek22

https://civarchive.com/models/122793/fenrisxl

SDVN6-RealArtXL by StableDiffusionVN

https://civarchive.com/models/118114?modelVersionId=128795

first_nsfw_for_sdxl_v1 by sevenof9247

https://civarchive.com/models/118794/firstnsfwforsdxlv1

Perfect Eyes XL by Deizor

https://civarchive.com/models/118427/perfect-eyes-xl

Finenude by finenude

https://civarchive.com/models/117603?modelVersionId=127928

Hella Babes, a SDXL LoRA for better nudity by vfx_ai

https://civarchive.com/models/127842?modelVersionId=139902

Film Like XL by getjinxed

https://civarchive.com/models/130286/film-like-xl