Fastapi vs flask. 7+ based on standard Python type hints.
Fastapi vs flask In this video, we’re diving deep into the ultimate battle of Python frameworks: FastAPI vs Django vs Flask. Suggest alternative. Recently, it seems to me that there has been a buzz around FastAPI as an alternative Python web framework. FastAPI performance benchmark so you can choose the most suitable for you. The line chart is based on worldwide web search for the past 12 months. The Python micro framework for building web applications. Flask is literally the "do whatever you want" framework, whereas fastAPI has (at least what I consider) to be a pretty well-established FastAPI endpoint -> pydantic -> database (I use sqlalchemy) paradigm that's pretty damn useful for validation, doc creation, and things like pre and post processing using validators. Main benefits of DRF Python FastAPI vs Flask: A Detailed Comparison. FastAPIは高性能なASGI(Asynchronous Server Gateway Interface)フレームワークであるStarletteを基盤として開発されている。一方で、FlaskはWSGIサーバとJinja2テンプレートエンジンを基盤として開発されている。 Q. Recommendations: FastAPI vs Flask Use Cases. Speed and Performance: The Need for Speed. Flask and FastAPI are popular choices but cater to different developer needs and project requirements. So consider using the latest versions. Interestingly, Flask + psycopg2 + gunicorn beats out FastAPI + People talk about fastapi and it’s great, don’t get me wrong. com/in/christopher-hawkes-130aa835/ht 🚀 Flask vs. FastAPI Good Fits. Django stands as the titan of large, complex projects, Flask as the craftsman of lightweight, custom solutions, and FastAPI as the pioneer in quickly and efficiently creating modern APIs. I wrote an application to create, update, download, and delete news in these two frameworks. FastAPI’s automatic API documentation and built-in support for data validation and serialization reduce boilerplate code and improve code quality. 3 and go 1. Compare price, features, and reviews of the software side-by-side to make the best choice for your business. In this article, we’ll dive into a performance showdown between FastAPI vs Flask, examining how each framework handles high-traffic scenarios and which might be the better choice for your next There are many microframeworks in Python, including Django, Flask, Bottle, and Flask. FastAPI can also be considered a better option due to its auto scaling feature. Note that Grinberg is comparing the overall Extensibility: FastAPI is highly extensible, with support for custom middleware, plugins, and third-party integrations, allowing you to tailor the framework to your needs. However, FastAPI is faster compare to Flask as it is built on ASGI (Asynchronous Server Gateway Interface) whereby it supports concurrency / asynchronous code. Although Flask is a simple framework, it excels at providing solutions for typical security issues like CSRF, XSS, JSON security, and more. Source. Flask vs FastAPI: Factor-Wise Comparison. Ease of Use While Django is known for its 'batteries-included' philosophy, FastAPI offers a different approach: In the realm of Python web frameworks, Django, FastAPI, and Flask are three of the most popular options. Flask, on the other hand, is a traditional synchronous framework. Again, if you want to know more about FastAPI read our comparison between Flask and FastAPI. FastAPI is more recent compared to Flask and was released in 2018. Currently working on my computer science thesis. It has a tiny templating language with loops, conditions, filters, and inclusions. Même si Flask est un micro-framework, il est intéressant de noter que FastAPI est construit dessus. Gần đây, do nhu cầu phát triển theo mô hình microservice ngày càng phổ biến, mình chủ yếu code mảng Python - Backend nên được phép chọn một framework để phát triển project mới cho công ty, sau khi cân nhắc giữa 3 framework phổ biến hiện tại sử dụng Python là Django, Flask và FastAPI, mình quyết định chọn So, what are the differences between APIFlask and APIFairy/flask-smorest/FastAPI? In a word, I try to provide an elegant (act as a framework, no need to instantiate additional extension object) and simple (more automation support for OpenAPI/API documentation) solution for creating web APIs with Flask. Each framework is in demand and widely used for web development In a previous article, I benchmarked FastAPI, Express. Flask Quand utiliser FastAPI plutôt que Flask et vice versa ? FastAPI et Flask sont tous deux d’excellents frameworks, mais ils conviennent à des cas d’utilisation différents. Introduction: FastAPI and Flask are both web frameworks that facilitate the development of web applications and APIs using Python. Reply reply I recently switched from flask to fastapi, there is a bit of a learning curve. What are the main differences between Flask and FastAPI? Flask is a lightweight microframework that is easy to learn and suitable for small to medium-sized web applications. What are Django, Flask, and FastAPI? Django is a high-level Python web framework created by Adrian Holovaty and Simon Willison in 2003. But for When deciding between Flask or FastAPI, consider the project's complexity, performance needs, and the development team's expertise. Its outstanding performance and modern way of building APIs have won many hearts. Flask. Q. In the world of Python, the two most popular web frameworks are Flask and FastAPI, and they each have their unique advantages and use cases. Let's walk though some of the different REST API options in Python and why FastAPI is the best 😂Join me and make the long and arduous journey of becoming a <del>The war has begun. FastAPI is built on top of Starlette and Uvicorn, which are optimized for speed. It has a tiny templating language with loops, conditions Flask has no such instruments for customizing the output. FastAPI: While both Flask and FastAPI are popular choices for building RESTful APIs in Python, they have different design philosophies and use cases: Flask is a minimalist and flexible FastAPI vs Flask Performance Benchmark. js + Prisma is about a 2x difference. A modern framework in Python that is used for building APIs is called FastAPI while a micro web framework written in Python that is used for developing web applications is called Flask. FastAPI excels for: FastAPI: Despite being a newer player compared to Flask and Django, FastAPI has quickly become a favorite in the Python community. form. For each framework, I created an API endpoint that returns 100 rows of data from a PostgreSQL database. The choice between Flask and FastAPI should be guided by the specific needs of the project, considering factors such as expected load, complexity, and development speed. In this article, I am pitting the champion, FastAPI, against a new set of faster competitors. FastAPI, on the other hand, is built for high performance from the ground up. Nowadays, web developers use Python FastAPI and Flask to build small-scale data science and machine learning websites and applications. In the realm of APIs, speed and performance are paramount. Compare Flask vs fastapi and see what are their differences. This comparison will help you understand their features, advantages, and use cases, making it easier to choose the right one for your needs. SocketIO Integration: A Hurdle for FastAPI (compared Therefore, working with a web framework should be quick and easy. Imagine you’re building an API, and you need it to be fast, reliable, and scalable. The extensive list of features that FastAPI supports can be found on their feature page with highlights Flask: While not as fast as FastAPI, Flask is still a performant framework. It is designed to make it easy to build APIs quickly and efficiently while providing features like automatic validation, serialization, and documentation of your API, making it a popular choice for building web services and microservices. (by pallets) Web Frameworks Python Flask Wsgi web-framework Werkzeug Jinja Pallets. FastAPI is a modern high-performant web framework for building APIs with Python. Lets discuss pros, cons and which framework needs to be used under what condition. Or an article or blog will do a comparison from flask to fastapi when they should really be comparing starlette. Use Flask for small to medium-sized projects where simplicity and minimalism are important. Users often note that it outperforms Flask and Django in handling concurrent requests. Each framework has its own strengths and is suited to different types of projects. FastAPI is designed for APIs. FastAPI works with a technology called ASGI (Asynchronous Server Gateway Interface) and can also use Jinja2 for templates. Python’s web development ecosystem is packed with robust frameworks, but two of the most popular options for building web applications and APIs are Flask and FastAPI. Flask + Gunicorn vs. Question I'm pretty much a novice in web development and am curious about the difference between Flask and FastAPI. In Flask, however, we inherit from the BaseSchema class, which is a regular data class and contains several methods the inheriting classes will When to Use FastAPI vs. FastAPI’s syntax is clean and shares many similarities with Flask, so rewriting endpoints is generally easy. Edit Torn between Flask, Django or FastAPI . These are the three names comes to everyone's mind when we talk about python for web development. GitHub Gist: instantly share code, notes, and snippets. Conclusion: FastAPI uses Hot Reloading, which keeps the app running while you’re making code changes. In this comparative analysis, we’ll dive into Flask and FastAPI, exploring their features, performance, and use cases to help you make an informed decision. For flexibility, FastAPI is very flexible code-wise and doesn't restrict the code layout. Flask version upto 1. In this article, Flask. On the other hand, Mozilla relies on Flask for their In this blog, we will explain the pros and cons of both Flask and FastAPI so that you can make the right decision to ensure the success of your project. Now that we have understood the purpose of comparison based on Django vs Flask vs FastAPI, let us explore these frameworks one by one. It uses Werkzeug for handling requests and Jinja2 for templating, suitable for smaller applications. Flask is perfect for small-to-medium projects that don’t require high concurrency or complex asynchronous operations. Sometimes, it becomes crucial to use features of both in a singl Performance Comparison: FastAPI vs. Imo fast api is better however since it supports async functions out of the box, and it has a lot of other cool features. FastAPI: Which Should You Choose? 🤔. For projects that require rapid development and high performance, FastAPI is often the preferred choice in 2024. So, I would say Flask and FastAPI have very similar development times. In the debate between Django, Flask and FastAPI, there is no absolute winner; each one shines in their respective domain. FastAPI supports WSGI through libraries like uvicorn, so you can gradually Never tried the FastAPI/Flask + SQL ALchemy, but I can assure that by using Django + DRF you will save a lot of time with basic stuff like field validation (including relationship), admin panels, authentication and etc. 去年在知乎上看到一篇文章，后来想找却找不到了，最后通过关键词「5 分钟」和「四年」在 掘金 上找到了原文——《用它5分钟以后，我放弃用了四年的 Flask》。 作者先是给出了一个手动用 if 验证请求数据的 Flask 视图函数 ： The migration from Flask to FastAPI is straightforward, especially for APIs. Easy to Learn: Projects needing sophisticated functionality should consider Flask because of its ease of Flask is very good, FastAPI is even better. This section delves into real-world use cases and the performance outcomes that developers can expect when using FastAPI FastAPI vs Flask. com. FastAPI, on the other hand, is a more Flask and FastAPI are two of the most popular Python web frameworks, but they have different strengths and weaknesses. FastAPI + SQLModel + gunicorn compared to Nest. The abundance of extensions and resources makes it a solid choice for developers who value community support and a well-established This blog will delve into the differences between FastAPI and Flask, examining their advantages, disadvantages, and use cases, to help you make an informed decision about which framework best As aforementioned earlier in this discourse on "fastapi vs flask", FastAPI can take load-intensive projects effortlessly in stride compared with the Flask framework which best lend itself servicing simpler web applications that do not require This also makes FastAPI better for larger-scale projects, especially enterprise when compared to Flask, as it is better at handling more requests much faster. 0 uses a synchronous model by default, which means it processes requests one at a time. While both frameworks can be used to develop a wide range of applications, they each shine in different scenarios. Flask/Quart are therefore best compared with Starlette, and FastAPI is best compared with relevant Flask, Quart, and Starlette extensions. </del> Let's end the war between Flask and FastAPI. Flask is a bare framework. Applications requiring rapid development of scalable, modern APIs. What is Flask? Flask is FastAPI and Flask are both strong frameworks, each with unique advantages. Some of the key features of FastAPI include: Speed: FastAPI is one of the fastest web frameworks for building APIs, allowing you to handle a high volume of requests For instance, when comparing FastAPI vs Flask benchmark results, FastAPI can handle a significantly higher number of requests per second due to its asynchronous capabilities and efficient handling of data validation. Its outstanding performance and modern way of building APIs have won many FastAPI vs Flask vs Django. FastAPI and Flask are two popular frameworks for building web applications in Python, each with its own strengths and weaknesses. 8. I try to migrate from Flask to FastAPI, and I was wondering if there is something similar to Flask's: payload = request. Flask 1. First, we looked at a description of each framework, then reviewed the pros, the cons, and a few use cases for each. I also saw lots of Fast API love in this Overview of the Flask vs FastAPI vs Django Comparison Flask is a suitable option for small projects like your blog, which you can customize to fit your preferences. linkedin. session, which is a dictionary. Whether you’re optimizing for performance, scalability, or developer experience, the debate between FastAPI , Django , and Flask has only grown fiercer as we approach 2025. While Flask has long been the go-to lightweight framework for Python developers, FastAPI has quickly risen in popularity thanks to its modern features, performance, and developer-friendly design. Flask and FastAPI are python-based micro-frameworks for developing small-scale data science and machine learning web and apps. Choosing the proper framework is critical for bui FastAPI: Despite being a newer player compared to Flask and Django, FastAPI has quickly become a favorite in the Python community. So now we have a framework that dares to call itself FastAPI and Flask battle it out to see which Python API framework is best!Want free repositories? https://www. Both have concept of modularity via Blueprint in Flask and Router in FastAPI. The choice between FastAPI vs Flask is a critical decision for developers seeking a suitable framework for their projects. I have to create a RESTful API in Python for serving an ML model, as well as handling user registration and login, and support for non-relational data (MongoDB for example). FastAPI is based on Pydantic and types hints to validate, serialize, and deserialize data. Discover the key differences between Flask and FastAPI in 2025. Django. I would reccomend learning it since I think it will probably end up replacing flask some day. The FastAPI ecosystem is growing fast, Flask vs. If you are a backend developer, you must have encountered many frameworks for Python like Django, Flask, and FastAPI. Introduction. The key differences between Flask and FastAPI are: Flask is a micro-framework, while FastAPI is a full-stack framework. Flask vs FastAPI: Use Cases. FastAPI is built on top of Starlette, which is a lightweight ASGI framework, and it’s been optimized for speed. Both Python FastAPI and Flask are excellent frameworks, each with its strengths and ideal use cases. FastAPI has gained significant traction in the development community due to its performance and ease of use. In Flask, however, we inherit from the BaseSchema class, which is a regular data class and contains several methods the inheriting classes will Django vs Flask vs FastAPI: Which Python Web Framework is Right for You? Django, Flask, and FastAPI are three of the most popular Python web frameworks. Today, I want to share an in-depth comparison of two Choosing between Flask and FastAPI boils down to your project requirements: Go with Flask if you want simplicity and flexibility for smaller projects. com/freebiesWant to learn FastAP Conclusion: Choosing Between Python FastAPI and Flask. Compare their performance, features, ease of use, documentation, and use cases. Which framework is better for a large-scale application? A: FastAPI is generally better for large-scale applications due to its performance 🐍FastAPI vs Flask 🌶️v⚡ FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3. Independent benchmarks, such as those from TechEmpower, However, Flask and Quart are designed to be extendable and there are extensions that provide this functionality. Flask and FastAPI are two of the most popular frameworks for Python web development, but they cater to different needs. Reply reply If you want to scale your FastApi app, the effort is also similar to Flask. The basics. And many times people build something using fastapi when they should simply be using starlette. Both FastAPI and Flask have their merits. js in order to verify FastAPI’s claims of being on par with Node. This is required because BaseModel comes from the Pydantic library and has the functions necessary for data validation. The article makes the simple, easy to understand point that Flask and FastAPI are not to be compared. to_dict(flat=False) payload = {key:payload[key][0] for key in payload} for FastAPI. Learn the differences and similarities between FastAPI and Flask, two popular Python web frameworks. It can be used as a general backend for any website o Real-World Applications: In practical applications, the performance of FastAPI can be influenced by its advanced features, such as automatic data validation and interactive API documentation, which may introduce some overhead compared to simpler frameworks like Flask. Learn about their performance, developer experience, ecosystems, and use cases with examples and tips. When comparing their performance, FastAPI generally outperforms Flask due to its asynchronous capabilities and the use of Starlette as its underlying framework. Choose FastAPI if you need high performance, async support, and automatic features for modern, scalable applications. As these are Python languages, when making an app with Python, you will have to pick one of these to proceed. FastAPI is built on top of the Starlette framework, which is optimized for high performance and asynchronous programming. This detailed article offers an insightful comparison of these two leading Python Yuan Gao wrote a somewhat lengthy article entitled: Flask vs FastAPI first impressions [10]. You can implement standard security measures using 3rd party extensions like Flask Flask and FastAPI are python-based micro-frameworks for developing small-scale data science and machine learning web and apps. FastAPI is significantly faster than Flask due to its use of Python type annotations, which enables static type checking and code optimization. Both FastAPI and Flask are web frameworks (well Flask is a “microframework”) to build APIs with Python. Compare FastAPI vs. Ease of Migration. Flask’s simplicity and maturity suit smaller projects, while FastAPI’s performance and modern features make it a potent choice for larger, high-performance applications. We can notice that FastAPI’s NewsSchema / CreatorSchema use BaseModel as a parent class. Aside from the cool convo, I have been noticing lots of trends about Fast API potentially replacing flask. Pros of Flask. So, which one do you choose? FastAPI Tutorial in Visual Studio Code. Flask vs. Automatic Data Validation. Documentation: SessionMiddleware An Some of the most popular web frameworks are Django, Flask and FastAPI. I have used Flask in the past, but recently I have been using Nodejs, so the async nature of FastAPI will make it similar to Nodejs, plus I have read that it's better for making APIs. You can check here a comparison between these frameworks. js. Micro web vs web A web framework is a collection [] Hello, I'm going to build a microservice that processes images and does OMR on them, and I'm torn between using Flask or FastAPI. Among some of those differences included the learning curve, the community, the flexibility, how Flask is WSGI, and how FastAPI is ASGI. The two different frameworks offer very different features sets out of the box. Both Flask and FastAPI are powerful frameworks with unique strengths. FastAPI vs Flask, are the most used web frameworks for Python, specializing in building RESTful APIs. However, Flask remains a strong contender for simpler applications or when rapid development is prioritized over raw speed. It works similarly to Flask which supports the deployment of web applications with a minimal amount of code. ![[images/introduction-to-fastapi/Pasted image 20240816183405. Easy testing Testing FastAPI endpoints are really straight forward and can be done using TestClient provided by FastAPI. The actual choice is usually fastAPI vs flask as they are more comparable. I want to create an IP reputation API and was wondering what would be a better framework to use. Flask and FastAPI are popular micro-frameworks in Python, ideal for building small-scale websites and applications. FastAPI. 5. Get Choosing between Flask and FastAPI ultimately depends on the specific use case at hand: Go with Flask if you prefer simplicity, and flexibility alongside an extensive community support system. Explore a detailed comparison of FastAPI, Flask, and Django - three popular Python web frameworks. 14. Flask vs FastAPI . In contrast, Flask is a WSGI framework that may not perform as well under high load conditions. Use FastAPI for: Building APIs or services with high concurrency or real-time updates. According to a benchmark study by Miguel Grinberg, FastAPI can be faster or slower than async Flask, depending on the web server and the Flask async type. Jinja2 is simple and flexible. F astAPI is a modern, fast, web framework for building APIs with Python 3. FastAPI vs Flask. D eciding on the right web development framework to use is vital to developing a fast, scalable, and efficient web application. As a result, here’s my comparison of FastAPI and Flask. While FastAPI is best suited for developers who require comprehensive API features and Learn the key differences, strengths, and weaknesses of FastAPI and Flask, two popular Python web frameworks. Flask is a lightweight option suitable for small to medium-sized applications, while FastAPI offers advanced features like automatic data validation and asynchronous support for high-performance APIs. Final Thoughts. In this article, we will compare and contrast these two web development frameworks. On the other hand, FastAPI shines when building high-performance, asynchronous APIs with automatic validation and documentation. In the Flask vs FastAPI showdown, here we will provide a comprehensive comparison of both Flask and FastAPI based on various factors: 1. I was never that fond of Django because it seemed so heavy for my particular use cases, but I always loved Flask because it was quick and easy to build. FastAPI: FastAPI wraps pydantic into its framework and allow data validation by simply using a combination of pydantic schema and python type hints. Understanding FastAPI and Flask: FastAPI is a modern asynchronous web framework for building APIs with Python 3. This is because it uses asynchronous code, which allows it to handle requests concurrently. The difference in speed can be significant, especially for applications with many concurrent Comparison between Flask and FastAPI Performance. And articles should stop comparing them. In addition FastAPI itself extends Starlette which is a microframework like Flask and Quart. However, we need to make a small FastAPI vs Flask distinction. Here's what you need to know: Flask: Lightweight, flexible, and ideal for small projects or traditional In the FastAPI vs. Flask’s API is simple and easy to learn, even for beginners. Hey all I host a podcast and recently interviewed Sebastián Ramirez the creator of Fast API. I am also known as a Python Developer. The choice between them depends on your project requirements, team expertise, and performance needs. FastAPI (Python): FastAPI is one of the fastest frameworks in the Python ecosystem, thanks to its asynchronous capabilities. In contrast, Flask and FastAPI are micro frameworks used to build small scale websites or applications based on ML. Flask is great for building prototypes, proof-of-concept applications, or RESTful APIs, where you want the freedom to choose specific extensions based on your needs. The person compares with visible enthusiasm: I’ve recently upgraded several of our API endpoints over from Flask to FastAPI, and honestly I haven’t felt such a breath of fresh air in development for a long time. A large community ensures ample learning resources, plugins, and extensions. Compare FastAPI and Flask, two popular Python web frameworks for building APIs. Are there many extensions available for FastAPI like Flask? A: FastAPI has fewer extensions compared to Flask, but it comes with many built-in features that reduce the need for additional extensions. 2. One option is to use the Marshmallow library to serialize your data. Interest over time of fastapi and Flask Note: It is possible that some search terms could be used in multiple areas and that could skew some graphs. Have you considered Litestar? Check it out, it might be the solution you are looking for. Performance and Speed: FastAPI vs Flask. In summary, when evaluating development speed between FastAPI and Flask, FastAPI offers several advantages that can lead to faster development cycles, reduced bugs, and improved overall efficiency. It’s common practice to either write custom validation logic or use libraries such as marshmalllow or pydantic. When comparing FastAPI, Flask, and Django, several key points emerge: Performance: FastAPI is known for its high performance, leveraging asynchronous programming and type hints to optimize speed. 4. ปีก่อนเราสอน Course Machine Learning Deployment (ปีนี้ก็จะเปิดอีกเด้อ รอได้เลย) แล้วมีผู้เรียนถามว่า ทำไมตอนนั้นเราใช้ Flask ไม่ได้ใช้ FastAPI ในการสอน เออ เป็นคำถามที่ดี FastAPI + psycopg2 + uvicorn, on the other hand, seemed to lag behind Express. For developers prioritizing performance, asynchronous programming, and modern API features, FastAPI is hard to beat. In the realm of web development, the debate between Flask and FastAPI is more relevant than ever in 2024. Take a look at Starlette's SessionMiddleware. I’m a freelance developer with experience in web development and web scraping. com/📣 Other Social:https://twitter. com/RealChrisHawkeshttps://www. Based on your needs you might have used any of these from time to time. In contrast, Flask requires additional extensions and route-specific decorators to generate a similar Swagger UI page. Two of the most popular web development frameworks are FastAPI and Flask. But one comment states: " this article reads like it was written by an AI. Choose Flask when you need a lightweight and flexible microframework. Generally Flask on a Greenlet powered WSGI server (Meinheld / Gevent) can offer comparable throughput as an async-first ASGI framework like FastAPI. HTTP Methods One of the biggest differences between Flask and FastAPI is performance. Litestar using this comparison chart. FastAPI is built on top of Starlette for the web parts, and Pydantic for the data parts. Despite the fact that FastAPI is a relatively new framework, an increasing number of developers are using it in their new projects. This is inspired from flask-vs-fastapi which is also used as the base code but updated to the latest dependency versions python 3. Flask, being around since 2010, has a more mature ecosystem, while FastAPI, introduced in 2018, focuses on modern Python features and performance. If you’re building a small-scale project or prefer simplicity, Flask is a reliable choice. Flask VS FastAPI パフォーマンス. FastAPI, a young web framework for creating RESTful APIs, emerged 8 years after Flask's debut in 2018. As a developer, choosing between Flask and FastAPI will depend on the needs of your project. Under the hood, FastAPI uses Pydantic for data validation and Starlette for tooling, making it blazing fast compared to Flask, Flask vs FastAPI Performance. 7+ based on standard Python type hints. FastAPI and Flask, both esteemed web frameworks, embody distinctive philosophies and features that cater to different aspects of FastAPI is a Python based web framework that allows you to write backend server in a matter of minutes. This age difference has piqued interest among developers, leading to questions about FastAPI's rapid ascent. FastAPI is a framework for building serverless APIs in Python. Learn which Python framework is best suited for your next project based on performance, flexibility, and community support. Comparing them is something the FastAPI docs tells you not to do. The straightforward approach of Flask is ideal for newcomers to web development. Whether you're serving up data to hungry web applications or handling millions of requests per second, your API needs to be lightning-fast to provide an optimal user experience and ensure efficient resource utilization. FastAPI uses Starlette under the hood so it is compatible. You’ve got two great options on your plate: Flask—the tried-and-true, minimalist framework, and FastAPI—the rising star that’s been blowing developers away with its speed and features. Until now I've found only some hacks, were you still had to implement one-by-one all the form's arguments to a function: FastAPI Vs Flask. Compare Flask and FastAPI, two Python web frameworks for building web applications and APIs. An exploration of 4 different web frameworks, 2 in python, 2 in go. So when should you actually use FastAPI versus Flask for a new Python project? Having built and maintained dozens of applications with each, here is my hands-on recommendation based on the technical differences just covered. I greatly use Python in my work, from simple scripts to full-stack applications. After you register SessionMiddleware, you can access Request. Flask is currently used by companies such as Uber, Microsoft, and Explosion AI. Speed: Benchmarks show that FastAPI can handle more requests per second compared to Flask and Django, making it a preferred choice for high-performance applications. FastAPI: Which One Wins? 🏆 Flexibility : Both frameworks offer flexibility, but Flask gives you more control over every aspect, while FastAPI does a lot of the heavy lifting for you. Overview: Django vs Flask vs FastAPI Overview of Each Framework: Django vs Flask vs FastAPI. Use Cases API Development: FastAPI is particularly well-suited for building APIs for various applications, including mobile apps, web services, and IoT devices, due to its high performance and The choice between Flask and FastAPI is a significant decision that should align with your project’s goals and your team’s expertise. The FastAPI and Flask provide different features. Flask’s minimalist design and lack of boilerplate code make it easy to use for small and medium-sized projects. Flask is a lightweight framework that is easy to learn and use, while FastAPI 1. js + pg by over 6x. codingwithroby. Flask, with its simplicity and flexibility, is ideal for small to medium-sized applications, including Choosing Django vs Flask vs FastAPI will help you manage your money wisely, save time and find the perfect team to develop your web product, so keep on reading. security module of FastAPI has several tools for various security mechanisms. Pros and Cons of Flask vs FastAPI Flask. Flask: Security. Flask: Flask boasts a mature and extensive ecosystem with a large community. Pros: Flask’s minimalistic and flexible design makes it easy to learn and adapt to various project needs. It supports asynchronous programming and can run with WSGI and ASGI servers for production. flask. Learn the key differences, features, pros and cons of each framework. It's a completely async framework whereas Flask and Django are not. For those already using Flask, transitioning to FastAPI doesn’t have to be a full rewrite. When it comes to choosing one, it’s difficult to consider various performance dimensions It will assist in analyzing the Flask vs. With Flask, you need an extra terminal command: export FLASK_ENV=development, which allows you to make code changes without restarting your development server. Flask battle, the choice ultimately depends on your project’s requirements and your familiarity with the frameworks. palletsprojects. Source Code. png|Thumbnail of The different between Django, Flask, and FastAPI]] Hi, it’s Ekky. Hence, you don’t have to keep restarting the development server. Leveraging asyncio and Flask and FastAPI are probably easier to use. Maturity: Compared to well-established frameworks like Flask and Django, FastAPI is relatively new, which may lead to occasional changes and updates. Not sure the difference between the two and if FastAPI is more for backend. When discussing FastAPI vs Flask, both indeed offer similar features. Whether building a simple website or a full-scale web app with third-party integrations, learning Flask vs Falcon vs FastAPI benchmark. Not sure if it helps. 6+ based on standard Python type hints. Flask Flask doesn’t provide any input data validation feature out-of-the-box. FastAPI is designed for building APIs, while Flask can be used for For instance, Robinhood leverages FastAPI's async features to handle millions of requests per second, showcasing its efficiency in high-concurrency environments . FastAPI is for building high-performance APIs with real-time However, for modern APIs demanding exceptional performance, robust built-in features, and a clear API-centric approach, FastAPI takes the lead. But two are the most popular now: Flask and FastAPI. When it comes to Flask vs FastAPI comparison in rendering HTML, both rely on the Jinja2 templating library. . Microframeworks are a great start for small projects, MVPs, or even large systems that need a REST API—including Flask and FastAPI. Choose Python FastAPI if: You’re building high-performance APIs or microservices There are many web development frameworks available for Python. FastAPI vs. FastAPI provides lots of features that make it easy to create and use APIs. FastAPI excels in performance, FastAPI vs Django vs Flask: The Framework Showdown for 2025 👇🏼 Choosing the right web framework is one of the most critical decisions for any project. What's weird about this comparison is that, when we're talking about already existing codebases, usually the cost of switching from something already good to something better isn't justifiable, but Flask is good enough to kill itself by making the transition rather easy. In summary, while FastAPI demonstrates impressive performance metrics, especially in scenarios that leverage its unique features, it is essential to consider the specific requirements of your application when choosing between FastAPI and Flask. Discover their performance, scalability, development speed, community support, documentation, database support, IMO, Flask is easier than fastAPI. 🚀 Learn to code with me: https://codehawke. js, Flask, and Nest. Reply reply Strict-Koala-5863 • Why Photo by Tharoushan Kandarajah on Unsplash. This can lead to slower performance under high load or when dealing with I/O-bound operations. It performs 100 times better than Flask in any given situation. FastAPI + Uvicorn: A comparitive analysis Flask with Gunicorn : Flask is a mature and flexible microframework for building web applications in Python. In today’s article, we reviewed the differences between Flask and FastAPI. Both frameworks are powerful tools for Python developers. As a Senior Software Engineer in the AI field, I’ve had extensive experience working with various Python web frameworks. The fastapi. But starlette and its devs deserve more visibility. Speed: FastAPI is generally faster than Flask. FastAPI is well known to be the fastest python web framework. FastAPI was built with these three main concerns in mind: Speed; Developer experience; Open standards; You can think of FastAPI as the glue that brings together Starlette, Pydantic, OpenAPI, and JSON Schema. Compare their performance, features, ease of development, and community support. cbmss kppjgg nqajdu glzdpd dzlppht blrlccf vwzhuk juyxi uohcay vkpwbn