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About the rei (rei rr) tag
rei (rei rr) is an artist tag that NovelAI Diffusion can use. On Danbooru it has 213 posts, and its best-rated still image scores 223. The samples above put the tag at the front of a fixed base prompt with seed 1234, so the differences between tags come from the tag alone.
How each model draws rei (rei rr)
Follows pose and expression instructions closely. Good for clean standing portraits.
Picks up face shape, line and palette more strongly. Good when you want the style to lead.
WAI illustrious SDXL v17, a local model. Shows how the same tag reads outside NovelAI.
Writing rei (rei rr) in a prompt
Put the artist tag near the front, then add the subject and quality tags.
rei (rei rr), 1girl, solo, best quality, masterpiecerei (rei rr), hatsune miku, 1girlrei (rei rr), cromachina, 1girlThe mix example uses cromachina, the closest style on this site. The negative prompt and the full settings are on the terms page.
How these samples were made
Every image uses 832×1216, seed 1234, 23 steps and the k_euler_ancestral sampler. The base prompt and negative prompt stay the same for every tag, and only the tag under test changes. Images flagged by the NSFW check are regenerated with a new seed or hidden.
From the Danbooru wiki
Modeler, artist.
Nickname: "01" (レイ, Rei) The other names: レイP (Rei-P) or レイぷん突撃砲 F型
FAQ
Does NovelAI recognize rei (rei rr)?
Compare the samples on this page. Every tag on this site shares the same seed and base prompt, so any change you see comes from rei (rei rr).
How do I write rei (rei rr) in a prompt?
Write "rei (rei rr)" near the front of the prompt and separate it from other tags with commas.
Which artists draw in a similar style to rei (rei rr)?
cromachina, otokamu, akuma (kishikaisei) are the closest on this site, judged from the V4.5 samples.
Should I use V5 or V4.5?
V4.5 gives a stronger rei (rei rr) look. V5 gives steadier poses and fewer artifacts.