Choosing the Best Python Framework: Flask, Django, or FastAPI Explained

Learn the differences between Flask, Django, and FastAPI to pick the best Python web framework for your project, whether small, full-featured, or high-speed.

When it comes to building websites or apps with Python, three frameworks usually come to mind: Flask, FastAPI, and Django.

All three can get the job done, but the right choice really depends on what you’re trying to build. If you wait too long to decide, you can slow down your project, spend more money than you need to, and lose time.

And let’s face it we don’t want that because time is money. I love each of these frameworks for their own use cases, they are great tools and you should get a decent understanding of each of them especially in 2025.

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In this article, I’m going to break down when to use each one. My goal is to make it simple enough that you’ll be able to pick Flask, FastAPI, or Django in less than a minute and move forward with confidence.

I’ll walk you through each framework, explain the differences with real-world examples, and show a little code here and there so you can get a feel for how they actually work.

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