Techniques are disclosed for generating a GUI model for an application based upon requirements information for an application. The requirements information may include an image of a GUI screen (or multiple images of multiple screens) included in the GUI for the application. The GUI model generated based upon the input image may include information about the type and placement (layout) of GUI components in the GUI screen, and may also include information indicative of one or more functions to be assigned to one or more of the GUI components in the GUI screen. The GUI model may then be used to generate an implementation of the application GUI, including generating executable code that implements the GUI screen.