Flask

Flask vs FastAPI: which is better for modern Python APIs?

The question is about Flask .

Answer:
FastAPI is built with modern async Python, delivers faster performance, auto-generates interactive API docs with OpenAPI/Swagger, and offers type hints with validation powered by Pydantic. Flask is simple, battle-tested, and flexible, but lacks async support and out-of-the-box API typing/docs. For speed, structure, and modern Python best practices, FastAPI excels. Flask is reliable for quick prototyping or traditional Python web apps.

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Waleed focuses on cloud-native backend system architecture for SaaS products as a Senior Software Engineer. With about 8 years of commercial delivery, he builds services in Python using Django, shaping REST API boundaries, Mi... Read More

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Senior
Availability
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Experience
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English
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Vladyslav is a Senior Data Engineer focused on building data pipelines and infrastructure for AI-driven products. Started as a Python developer, he moved deeper into data engineering through hands-on work with ETL/ELT systems... Read More

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Victoriia S.

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Cortance 5-star rating on ClutchCortance 5-star rating on GoodFirms
Catherine Ilaschuk
Marketing Assistant

Cortance helped us to deliver the system on time, even with the client's last-minute feature requests. The launch was a success, and the client left a very positive feedback. Describe your overall experience in details. And because the client was very satisfied with the finished product, they have decided to continue working with us further.

goodfirms
5.0/5.0
Anonymous
CEO

The app built by Cortance reduced manual work, digitized patient information, and increased overall convenience. The team had an efficient project management approach, communicating through phone and Google Meet and using Jira to manage tasks. Their smooth workflow made the collaboration a success.

Clutch
5.0/5.0
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