Replit AI, consisting of Replit Agent and Assistant, transforms the Replit IDE into a conversational, AI-driven development environment. Powered by advanced models like GPT-4o and Claude Sonnet 4, it allows users to: Agent: Turn a plain-language app idea into a fully functional prototype—spanning code setup, environment configuration, and deployment—without manual setup. Assistant: Provide in-line code completion, bug fixes, explanations, and enhancements during actual coding sessions. Unique features include multimodal prompt support (e.g. screenshot uploads), real-time collaboration, and seamless deployment options. The platform supports building with front-end frameworks (React, Vue), back-end (Node.js, Flask, Django), and managed databases like PostgreSQL—all directly in the browser.