Comparison

FastAPI vs Symfony

On the evidence we track, FastAPI leads this comparison with a composite score of 73/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsJSONMarkdownGraphQLor send Accept: application/json
FastAPI73
Symfony62
Score
Vioscale score
FastAPI73 / 100high · 78%
Symfony62 / 100medium · 65%
Pricing
Free tier
FastAPI
Symfony
Model
FastAPIcommercial
Symfonycommercial
Price level
FastAPIfree
Symfonyfree
Transparent
FastAPI
Symfony
Integrations
Count
FastAPI11
Symfony4
Reliability
Status page
FastAPI
Symfony
Adoption
Dependent repos
FastAPI43,608
Symfony22,779
Github stars
FastAPI101,862
Symfony31,135
Package downloads weekly
Symfony
Stackoverflow questions
FastAPI31,000
Symfony
Activity
Commits last 30d
FastAPI210
Symfony100
Release
Cadence days
FastAPI14
Symfony
History
FastAPI20 items
Symfony20 items
License
Spdx
FastAPIMIT
SymfonyMIT
Language
Primary
FastAPIPython
SymfonyPHP
Market
Availability
Content
Faq
FastAPI8 items
Symfony

Capabilities

Feature-by-feature on the axes that matter for web frameworks. “-” means undocumented, not absent.

Core
Rendering model
FastAPI-
SymfonyHybrid (SSR+SSG+CSR)
File-based routing
FastAPI-
Symfony-
Language
FastAPIPython
SymfonyPHP
Rendering
Server components
FastAPI-
Symfony-
Streaming SSR
FastAPI-
Symfony-
Fullstack
Built-in API / backend routes
FastAPI
Symfony
DX
First-class TypeScript
FastAPI-
Symfony-
Fast refresh / HMR
FastAPI
Symfony-
Deployment
Edge runtime support
FastAPI-
Symfony-

What each one is

The product in its own terms, so the numbers below have context.

FastAPI

Leader

FastAPI is a modern web framework for constructing APIs in Python that combines high performance with developer convenience through automatic validation, interactive documentation generation, and first-class type hint support.

Independently observed

Symfony

An open-source PHP framework providing developers with reusable components, comprehensive documentation, and community support for constructing full-stack web applications, command-line tools, and APIs.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

FastAPI

Leader
Open sourceFree tier
as of verify ↗

Symfony

Open sourceFree tier

Free and open source under MIT license

as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
FastAPI
Symfony
macOS
FastAPI
Symfony
Windows
FastAPI
Symfony
Linux
FastAPI
Symfony
CLI
FastAPI
Symfony
Deployment
Cloud / SaaS
FastAPI
Symfony
Self-hosted
FastAPI
Symfony

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

FastAPI

Leader
11 total
  • Starlette
  • Pydantic
  • OpenAPI
  • JSON Schema
  • Swagger UI
  • ReDoc
  • OAuth2
  • JWT
  • HTTP Basic authentication
  • Cookies
  • Session management
Independently observed

Symfony

4 total
  • Drupal
  • Laravel
  • API Platform
  • Composer
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.