Google’s image generator in Docs is available to paid Workspace accounts that include the Gemini Business, Enterprise, Education, Education Premium, or Google One AI Premium add-ons.
Those with the new feature can find it under Insert > Image > Help me create an image, which results in a “Create an image” sidebar where you can type in a description of what you’d like to make. It also provides a drop-down to select an art style with options such as “Photography” or “Sketch.”