Definio AI is a powerful browser extension that runs every major LLM from a single sidebar, allowing you to chat with multiple AI models simultaneously without opening new tabs. It supports text selection, screenshots, and image uploads for computer vision tasks, and includes slash commands for quick actions like switching models, toggling web search, and capturing the screen. Ideal for students, researchers, and professionals, Definio enhances productivity by enabling cross-checking facts, summarizing content, and brainstorming ideas directly within your browsing.