Django is also a web development framework created in the Python programming language. It is a full-featured web application framework with a lot of features that are built into it, such as an Admin backend, and an ORM with migration capability. It is a little bit older and more mature.
Flask is better for quick development use cases and is perfect for prototyping. Django has inspired even some Flask extensions that are written. Flask is more suitable for developing lightweight web applications that do not require a large codebase. It is apt for developing microservices or serverless applications.
Flask is easy to learn and has fewer API’s when compared to Django. As the industry is following the trends towards microservices served as part of containers, it is excellent to keep Flask in your web development toolkit.