Midlibrary is the art style library for Midjourney AI's latest version, V6, containing a variety of styles, art movements, techniques, titles, and artist styles. Users can browse and apply these art styles through Midlibrary to enrich and beautify their works. The V6 version of Midlibrary boasts more features and advantages, accessible via Patreon support. Pricing is tiered based on usage, aiming to provide users with cutting-edge art style applications.