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FastAPI vs JetBrains IntelliJ IDEA

FastAPI logo

FastAPI

Web Development

A modern, fast, high-performance web framework for building APIs with Python

From
Free
Free plan
Yes
Visit FastAPIFull review
JetBrains IntelliJ IDEA logo

JetBrains IntelliJ IDEA

Developer Tools

Java and Kotlin IDE

From
Free
Free plan
Yes
Visit JetBrains IntelliJ IDEAFull review

The short version

  • FastAPI is an open source Python API framework licensed under MIT.
  • FastAPI is free; JetBrains IntelliJ IDEA starts at $19.9/mo.
  • Where FastAPI falls short: no built-in ORM, requires separate database libraries.
  • Where JetBrains IntelliJ IDEA falls short: high memory consumption and slower startup time compared to lightweight editors like Visual Studio Code.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which FastAPI and JetBrains IntelliJ IDEA actually diverge.

Attributes where FastAPI and JetBrains IntelliJ IDEA differ
AttributeFastAPIJetBrains IntelliJ IDEA
PlatformsWebmacOS, Windows, Linux
CategoryWeb DevelopmentDeveloper Tools

Identical on both: starting price (Free), free tier (Yes).

Not yet recorded: pricing model for JetBrains IntelliJ IDEA, founded for FastAPI.

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in FastAPI

Nothing recorded that JetBrains IntelliJ IDEA does not also cover.

Only in JetBrains IntelliJ IDEA

  • Smart code completion
  • Framework support
  • Refactoring tools
  • Debugging & profiling
  • Version control
  • Database tools
  • Build tools
  • Testing frameworks

What people use each for

The jobs each tool is most often brought in to do.

FastAPI

  • Building production-ready REST APIs with automatic validationnot JetBrains IntelliJ IDEA
  • Serving machine learning model predictions as REST servicesnot JetBrains IntelliJ IDEA
  • Building crisis management and orchestration platformsnot JetBrains IntelliJ IDEA
  • Enabling real-time APIs with WebSocket connectionsnot JetBrains IntelliJ IDEA
  • Rapid API development reducing boilerplate code significantlynot JetBrains IntelliJ IDEA

JetBrains IntelliJ IDEA

  • Enterprise Java developmentnot FastAPI
  • Spring applicationsnot FastAPI
  • Android appsnot FastAPI
  • Web applicationsnot FastAPI
  • Microservicesnot FastAPI

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

FastAPI

  • No built-in ORM, requires separate database libraries
  • Python-only, cannot build with other languages
  • Async/await learning curve for developers new to async programming
  • Production deployment requires separate ASGI server configuration

JetBrains IntelliJ IDEA

  • High memory consumption and slower startup time compared to lightweight editors like Visual Studio Code
  • Refactoring can sometimes increase code line count and doesn't effectively support all modern programming languages
  • Occasionally misses dependencies between files requiring full rebuilds for consistency
  • Expensive subscription costs for Ultimate edition compared to open-source alternatives like Eclipse
  • Not all class name references are updated reliably when using search and replace functionality

Pricing, plan by plan

FastAPI

Free

No published plan breakdown. See the FastAPI review.

JetBrains IntelliJ IDEA

Free
  • Community EditionFree
    • Java, Kotlin, Scala development
    • Python, Go, Rust, PHP, Ruby support
    • Spring Boot integration
  • Ultimate (Individual)$19.9/mo
    • All Community Edition features
    • Advanced web development tools
    • JavaScript, TypeScript, React support
  • All Products Pack (Individual)$29.9/mo
    • IntelliJ IDEA Ultimate
    • PyCharm Professional
    • WebStorm

Which should you pick?

Choose FastAPI if

  • You want to start without paying.
FastAPI review

Choose JetBrains IntelliJ IDEA if

  • You need smart code completion.
  • You want to start without paying.
  • You work on macOS, Windows, Linux.
  • You also want framework support.
JetBrains IntelliJ IDEA review

Questions people ask

Is FastAPI or JetBrains IntelliJ IDEA better?
Neither clearly leads. FastAPI starts at Free and JetBrains IntelliJ IDEA at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FastAPI or JetBrains IntelliJ IDEA?
FastAPI starts at Free and JetBrains IntelliJ IDEA at Free.
Does FastAPI or JetBrains IntelliJ IDEA run on more platforms?
FastAPI runs on Web. JetBrains IntelliJ IDEA runs on macOS, Windows, Linux.
Can I use FastAPI for free?
Both have a free tier, so you can try either at no cost before committing.
What is FastAPI best used for?
FastAPI is most often used for building production-ready rest apis with automatic validation, serving machine learning model predictions as rest services, building crisis management and orchestration platforms, enabling real-time apis with websocket connections. Of those, building production-ready rest apis with automatic validation and serving machine learning model predictions as rest services are not what JetBrains IntelliJ IDEA is typically brought in for.
What can FastAPI do that JetBrains IntelliJ IDEA cannot?
JetBrains IntelliJ IDEA covers Smart code completion, Framework support, Refactoring tools, Debugging & profiling.

Answered from the vendors’ own pages

FastAPI: Is FastAPI free to use?

Yes. FastAPI is free and open-source under the MIT License. It costs nothing to download, use, or deploy in production. An optional paid service, FastAPI Cloud, offers one-command deployment for additional convenience, but the core framework is free.

Source
JetBrains IntelliJ IDEA: Is there a free version of IntelliJ IDEA?

Yes, IntelliJ IDEA Community Edition is completely free for personal, educational, and commercial use. As of IntelliJ IDEA 2025.3, the Community Edition has been unified with Ultimate, maintaining all core functionality free including Java, Kotlin, Scala, Python, Go, Rust, PHP, and Ruby support.

Source
FastAPI: Can I use FastAPI for commercial applications?

Yes. FastAPI's MIT License permits unrestricted commercial use, modification, and distribution. You can build and sell products powered by FastAPI without licensing fees or restrictions.

Source
JetBrains IntelliJ IDEA: What programming languages does IntelliJ IDEA support?

IntelliJ IDEA supports Java, Kotlin, Scala, Python, Go, Rust, PHP, Ruby, JavaScript, TypeScript, and more. The free Community Edition includes support for all major languages with new features in Spring, Jakarta EE, Thymeleaf, and other frameworks.

Source
FastAPI: Does FastAPI include a database or ORM?

No. FastAPI does not include a built-in database or ORM. You must add separate libraries like SQLAlchemy for database access. This gives flexibility to choose the database solution best suited to your project.

Source
JetBrains IntelliJ IDEA: Can I use IntelliJ IDEA with Spring Boot?

Yes, IntelliJ IDEA has built-in Spring Boot integration including the Spring Initializr project wizard, automatic dependency management with Maven and Gradle, code inspections for Spring frameworks, and direct project creation from Spring Initializr.

Source
FastAPI: What Python versions does FastAPI support?

FastAPI supports Python 3.7 and later. Older Python versions are not compatible, so you must run at least Python 3.7 to use FastAPI.

Source
JetBrains IntelliJ IDEA: Does IntelliJ IDEA support Git version control?

Yes, IntelliJ IDEA includes comprehensive Git integration allowing users to create Git repositories, commit changes, push to GitHub, create and merge branches, resolve conflicts, and investigate file history directly from the IDE.

Source
JetBrains IntelliJ IDEA: How much does IntelliJ IDEA Ultimate cost?

IntelliJ IDEA Ultimate subscription starts at $19.90 per month for Individual plans or $29.90 for the All Products Pack. Long-term discounts apply: 20% off year 2 and 40% off year 3 and beyond, reducing the annual cost significantly for loyal users.

Source
JetBrains IntelliJ IDEA: What are the main differences between IntelliJ IDEA and Eclipse?

IntelliJ IDEA offers a cleaner UI and more powerful code assistance capabilities compared to Eclipse's more complex interface. IntelliJ provides better refactoring tools, superior code completion, and optimized performance, while Eclipse remains free and open-source with a larger plugin ecosystem.

Source
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