Nai.ckpt

: The file is part of the NovelAI image generation leak that surfaced around late 2022. It was highly sought after because it outperformed most early Stable Diffusion models in rendering detailed anime aesthetics.

To run this model locally, you typically use a tool like the AUTOMATIC1111 WebUI .

: If you want to use it for modifying existing images, rename the file to end with inpainting.ckpt (e.g., nai-inpainting.ckpt ) so the UI recognizes its specialized function. nai.ckpt

New (suspected) NAI model leak - AnythingV3.0 and VAE for it

: Place the .ckpt file in the models/Stable-diffusion directory of your installation. : The file is part of the NovelAI

: This model responds exceptionally well to Danbooru-style tags (e.g., 1girl, solo, masterpiece ) rather than long natural language sentences. Modern Alternatives

While nai.ckpt was revolutionary at its release, newer models hosted on platforms like Civitai often offer better performance and safety: : If you want to use it for

: The standard nai.ckpt file is approximately 4.27 GB . It is often distributed alongside a specialized VAE (Variational Autoencoder) file, which is necessary to prevent generated images from looking washed out or gray. How to Use nai.ckpt