CyberIllustrious is a realistic model based on the anime model Illustrious XL, combining the artistic prowess of Illustrious XL with realism and photographic precision. While it is possible to prompt CyberIllustrious with Danbooru tags, it is not necessary or recommended. CyberIllustrious works well with natural language prompting and keyword prompting. 

Please use caution with this model. It will render risque content. To avoid nudes, specify the clothing you want. Avoid prompting with 1girl or 1boy and instead use woman or man. 

CivitAI Link

Here are a few suggestions from the CyberIllustrous page on Civit:
Prompt:  
masterpiece, best quality, high quality, ultra-detailed, realistic
Please note, while the makers of CyberIllustrious recommend adding these terms to the prompts, they are not included in the CyberIllustrious Civit example images. Moreover, the terms did not appear to improve image quality in my tests.

Negative Prompts: 
worst quality, low quality, normal quality, lowres, low details, oversaturated, undersaturated, overexposed, underexposed
deformed, deformed face, low quality, bad quality, worst quality, (drawn, furry, illustration, cartoon, anime, comic:1.5), 3d, cgi, extra fingers, deformed teeth, watermark, logo
Please note, only the second set of negative prompts were used in the CyberIllustrious examples.

Recommended Steps: 30
Recommended CFG: 4-5

 

Example result. Prompt: steampunk-inspired portrait of a woman in a mechanical corset, her hair styled in intricate braids, standing against the backdrop of a…

Prompt:  steampunk-inspired portrait of a woman in a mechanical corset, her hair styled in intricate braids, standing against the backdrop of a steampunk industrial factory. The copper and brass elements of her attire gleam in the dim light. Her face is partly obscured by goggles, but her piercing gaze cuts through the steam and fog. The scene is richly detailed with intricate textures and warm metal tones, evoking a sense of adventure and futuristic elegance

Negative Prompt:  deformed, deformed face, low quality, bad quality, worst quality, (drawn, furry, illustration, cartoon, anime, comic:1.3), extra fingers, mutation

Guidance Scale: 4.5
Steps: 27
Size: 896x1152

Example result. Prompt: beautiful woman, solo, close up, rain coat, pink hair, short hair, wind, night, city, scenic background, wet, street, reflections,…

Prompt:  beautiful woman, solo, close up, rain coat, pink hair, short hair, wind, night, city, scenic background, wet, street, reflections, neon, looking at viewer, upper body

Negative Prompt:  deformed, deformed face, low quality, bad quality, worst quality, (drawn, furry, illustration, cartoon, anime, comic:1.5), 3d, cgi, extra fingers, extra digit, deformed teeth, mutation

Guidance Scale: 4.8
Steps: 28
Size: 896x1152

Example result. Prompt: beautiful woman wearing a dress and jacket with enormous slit sleeves, pale blue, haute couture, fashion editorial, high fashion…

Prompt:  beautiful woman wearing a dress and jacket with enormous slit sleeves, pale blue, haute couture, fashion editorial, high fashion photography, textured background 

Negative Prompt:  deformed, deformed face, low quality, bad quality, worst quality, (drawn, furry, illustration, cartoon, anime, comic:1.3), 3d, cgi, extra fingers

Guidance Scale: 5.0
Steps: 28
Size: 896x1152

Example result. Prompt: beautiful woman, leather jacket, iridescent blouse, leather skirt, blonde hair, messy hair, dark skin, silver boots, sitting on a…

Prompt:  beautiful woman, leather jacket, iridescent blouse, leather skirt, blonde hair, messy hair, dark skin, silver boots, sitting on a wooden chair, in the middle of field of yellow grass, cloudy skies

Negative Prompt:  deformed, deformed face, low quality, bad quality, worst quality, (drawn, furry, illustration, cartoon, anime, comic:1.3), 3d, cgi, extra fingers, deformed teeth

Guidance Scale: 4.8
Steps: 28
Size: 896x1152

Example result. Prompt: handsome man with a floral wreath in his curly dark hair. the man is wearing a white shirt, with silky flowing fabric, long sleeves.…

Prompt:  handsome man with a floral wreath in his curly dark hair. the man is wearing a white shirt, with silky flowing fabric, long sleeves. His hands are raised in an expressive pose, gentle expression, side profile, soft lighting, ethereal, neutral indoor background with dappled light and shadow, whimsical, artistic, serene, dreamy, close up, upper body

Negative Prompt:  deformed, deformed face, low quality, bad quality, worst quality, (drawn, furry, illustration, cartoon, anime, comic:1.3), extra fingers, mutation

Guidance Scale: 4.5
Steps: 27
Size: 1024x1024

Example result. Prompt: beautiful blonde, (close portrait, side view:1.2), wearing aqua sunglasses with gold wire rims, teal spaghetti strap blouse, thin…

Prompt:  beautiful blonde, (close portrait, side view:1.2), wearing aqua sunglasses with gold wire rims, teal spaghetti strap blouse, thin gauzy scarf blowing in the wind, (bright sunshine reflecting, glowing), old ruined desert city in the background, minimal, (haunting, moody, bleak:1.2)

Negative Prompt:  deformed, deformed face, low quality, bad quality, worst quality, (drawn, furry, illustration, cartoon, anime, comic:1.3), 3d, cgi, extra fingers

Guidance Scale: 4.4
Steps: 28
Size: 896x1152

Example result. Prompt: beautiful blonde wearing a halter blouse and ruffled skirt, close portrait, leaning against a graffiti-covered train, vignette,…

Prompt:  beautiful blonde wearing a halter blouse and ruffled skirt, close portrait, leaning against a graffiti-covered train, vignette, vintage, faded film

Negative Prompt:  deformed, deformed face, low quality, bad quality, worst quality, (drawn, furry, illustration, cartoon, anime, comic:1.3), 3d, cgi, extra fingers

Guidance Scale: 5.0
Steps: 28
Size: 896x1152

Example result. Prompt: woman, turtleneck shirt, white shirt, denim jeans, pink coat, black hair, curly hair, sitting on a grassy hill, knees together,…

Prompt:  woman, turtleneck shirt, white shirt, denim jeans, pink coat, black hair, curly hair, sitting on a grassy hill, knees together, hugging own knees, cloudy sky, masterpiece, best quality 

Negative Prompt:  deformed, deformed face, low quality, bad quality, worst quality, (drawn, furry, illustration, cartoon, anime, comic:1.5), 3d, cgi, extra fingers, extra digit, deformed teeth, mutation

Guidance Scale: 5.0
Steps: 30
Size: 896x1152

Source: the MonAI wiki · Updated · First published