Replit has launched Ghostwriter, an AI-powered coding assistant available for a subscription fee, designed to enhance and streamline the coding process by providing features such as in-line code suggestions, code explanation, code transformation, and code generation. After two months of beta testing and incorporating user feedback, Ghostwriter aims to make coding faster, easier, and more enjoyable by acting as an AI pair programmer that can assist users on any device, anywhere. It helps automate repetitive tasks, refactor large code blocks, and facilitates learning by offering step-by-step explanations and generating code based on natural language prompts. The development of Ghostwriter was a collaborative effort by Replit's team, with specific members responsible for building each feature and the supporting infrastructure, making it a versatile tool for both novice and experienced programmers seeking to enhance their productivity and creativity.