Companion is a personal AI tutor developed by Lambda Labs. It is an interactive Python code editor fully integrated with an AI tutor designed to guide users' thinking at each coding step, making it a helpful tool for individuals learning to code in Python or refining their skills. The Companion AI tutor assists in the learning process by providing real-time guidance, which makes the coding process smoother and more effective. Companion works best on a computer, however, the application's platform compatibility may vary. It's important to note that Companion is completely free and open-source. This means the software can be modified and distributed by users in the coding community, allowing for updates, improvements, and customization to further enhance user experience and functionality. Users can join the Companion community on Discord and also access the software's resources on Github. Overall, Companion is a useful tool for individuals interested in Python programming, whether they are beginners or experienced coders, providing a supportive, interactive, and adaptable learning environment.