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About the saya (saya no uta) tag
saya (saya no uta) is a character tag that NovelAI Diffusion can use. On Danbooru it has 764 posts, and its best-rated still image scores 428. 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 saya (saya no uta)
Follows composition and expression instructions closely, so the effect shows in a tidy form.
Reacts to the tag more strongly, so its effect is easier to see.
WAI illustrious SDXL v17, a local model. Shows how the same tag reads outside NovelAI.
Writing saya (saya no uta) in a prompt
Put the subject first, then this tag, then quality tags.
saya (saya no uta), solo, best quality, masterpiecewlop, saya (saya no uta), soloThe 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
Main heroine of Saya no uta.
Contrary to popular belief, she doesn't have cat ears, she has hair flaps.
She is actually a Lovecraftian horror from another dimension.
FAQ
Does NovelAI recognize saya (saya no uta)?
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 saya (saya no uta).
How do I write saya (saya no uta) in a prompt?
Write "saya (saya no uta)" near the front of the prompt and separate it from other tags with commas.
Should I use V5 or V4.5?
V4.5 shows the tag's effect more strongly. V5 gives steadier images with fewer artifacts.