How many colours are there in an AI file format?

An AI file format, which is used by Adobe Illustrator, supports a vast range of colors. It can handle millions of colors due to its use of vector graphics and color models like RGB and CMYK. The exact number of colors available depends on the color mode selected and the capabilities of the display or printer being used. Additionally, AI files can also support spot colors and custom color palettes for more precise color management.