About the crazy smile tag
crazy smile is a face tag that NovelAI Diffusion can use. On Danbooru it has 3,037 posts, and its best-rated still image scores 538. 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 crazy smile
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 crazy smile in a prompt
Put the subject first, then this tag, then quality tags.
1girl, solo, crazy smile, best quality, masterpiecewlop, 1girl, crazy smileThe 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
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A smile that exudes craziness rather than happiness. Usually depicted as an extreme smirk or as a wide open smile, both with distinctive sharp mouth corners pointing upwards. Often accompanied with a shaded face or crazy eyes to emphasize the malicious nature of the expression.
Typically seen with characters who are either yandere, sadistic, or completely crazy. May overlap with evil smile when the character is not just crazy, but malicious.
Examples
See also
FAQ
Does NovelAI recognize crazy smile?
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 crazy smile.
How do I write crazy smile in a prompt?
Write "crazy smile" 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.