Version Guide (TLDR version)
Alpha: Excellent on semi-realism style, would be perfect but the colors are faded
Lights On: Most vivid colors and most artistic version. Leans a little less realistic.
Get Real: Heaviest focus on realism, without losing the ability to make drawn/anime/etc. images. Especially strong on realistic hybrids/anthros, and without prompting leans realistic.
Prompt Notes:
Lights On and Get Real often need to prompt for the background. Alpha does not.
Always use score_9, score_8_up, score_7_up, score_6_up, score_5_up
Negatives can heavily alter the image!
This has many SDXL elements in it, so you may need to up the strength of your non Pony LoRAs
Normal Pony filters for rating/source work
Version Notes
Get Real
Realism focused improvement on Lights On. Great for better Anthros and to push the bounds of realism while still able to generate anime/cartoon images and working with most style LoRAs. Trade-off was a lot in the backgrounds if not prompting for them or using a LoRA; generally has a harder time doing very artistic/abstract backgrounds on its own like Lights On can.
Lights On
This version's goal was to fix the Alpha version sometimes produced. Most attempts to do so, however, completely negated some of the detail in backgrounds and it has moved slightly towards a more drawn base style.
Alpha
This is an alpha. The desired style is perfect, but the colors can be a bit faded.
If the images look faded, adding vivid lighting to the prompt can attenuate the issue.