Because Anime Studio is vector-based, it can import and work with files saved using the Adobe Illustrator (.AI) file format. Not all objects created in Illustrator can be imported, but Anime Studio can work with any Bezier curves and points that are exported.
You can only import Adobe Illustrator files in Anime Studio Pro.
Anime Studio doesn’t use Bezier curves the same way Adobe Illustrator does, so the imported curves can be a little off. Anime Studio 6 has improved how it places points to make the imported curves cleaner.
Most of the advanced features found in Illustrator cannot be exported to Anime Studio, including text (unless converted to outlines), blends, patterns, effects, gradient fills, ...