Both are stripped-down Python microframeworks without the bloated bells and whistles. Flask is more battle-tested, therefore slightly more reliable, and it’s widely used. FastAPI is a newer, more modern framework known for its speed with lots of built-in support.
Table of contents
The Ultimate Face-off: Flask vs. FastAPIInstallationHello World ApplicationRunning in DevelopmentHTTP MethodsAutomatic DocumentationData ValidationURL or Path ParametersTemplates FolderProduction ServerSort: