This research aims to analyze the ability of ChatGPT-4, an artificial intelligence-based language model, to create menus in line with different vegetarian dietary types for professional and amateur chefs, individuals who have taken up cooking as a hobby, and vegetarian individuals. For this purpose, ChatGPT-4 was given ingredients separately for Lacto-Vegetarian, Ovo-Vegetarian, Lacto-Ovo Vegetarian, Pescatarian, Polo-Vegetarian, Vegan, Semi-Vegetarian, Raw Vegan, and Fruitarian dietary types, and it was asked to create a daily menu consisting of three meals from these ingredients. For each vegetarian diet type, prohibited products were added to the list of ingredients, and whether ChatGPT could distinguish these prohibited products and create a correct menu was analyzed. As a result of the research, ChatGPT was able to correctly prepare Lacto-Ovo Vegetarian, Lacto-Vegetarian, Vegan, and Raw Vegan menus. However, errors were observed in the menus created in Ovo-Vegetarian, Semi-Vegetarian, and Polo-Vegetarian diet types. Half correct and half incorrect results were obtained in the Fruitarian diet. In Ovo-Vegetarian, Semi-Vegetarian, Polo-Vegetarian, and Fruitarian menus, prohibited products were used in the ingredient list. These findings show the potential of artificial intelligence in gastronomy but also emphasize the need for users to verify the information.