vioscaleAI
Comparison

FastAPI vs Quarkus

On the evidence we track, FastAPI leads this comparison with a composite score of 78/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

FastAPI full profile →Quarkus full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
★FastAPI78
Quarkus62
Score
vioscaleAI score
FastAPI78 / 100medium · 69%
Quarkus62 / 100medium · 74%
Pricing
Free tier
FastAPI✓
Quarkus✓
Model
FastAPIopen_source
Quarkuscommercial
Price level
FastAPIfree
Quarkusfree
Integrations
Count
FastAPI11
Quarkus19
Security
Disclosure policy
FastAPI–
Quarkus✓
Scorecard
FastAPI–
Quarkus5.6
Trust center
Vulnerabilities
Reliability
Status page
FastAPI✓
Quarkus✓
Adoption
Dependent repos
FastAPI43,608
Quarkus4,936
Github stars
FastAPI102,768
Quarkus15,943
Package downloads weekly
FastAPI97,378,207
Quarkus–
Stackoverflow questions
FastAPI31,000
Quarkus–
Activity
Commits last 30d
FastAPI63
Quarkus100
Release
Cadence days
FastAPI14
Quarkus1
History
FastAPI20 items
Quarkus20 items
License
Spdx
FastAPIMIT
QuarkusApache-2.0
Language
Primary
FastAPIPython
QuarkusJava
Market
Availability
Content
Faq
FastAPI8 items
Quarkus6 items

Capabilities

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

Core
Rendering model
FastAPI-
Quarkus-
File-based routing
FastAPI-
Quarkus-
Language
FastAPIPython
QuarkusJava
Rendering
Server components
FastAPI-
Quarkus-
Streaming SSR
FastAPI-
Quarkus-
Fullstack
Built-in API / backend routes
FastAPI✓
Quarkus✓
DX
First-class TypeScript
FastAPI-
Quarkus-
Fast refresh / HMR
FastAPI✓
Quarkus✓
Deployment
Edge runtime support
FastAPI-
Quarkus-

What each one is

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

FastAPI

Leader

A Python web framework designed for creating APIs with automatic documentation, built on standard protocols and type hints to enable rapid development and deployment.

Independently observed

Quarkus

Quarkus is a Java application framework that enables efficient, cloud-native development with fast startup times and low memory footprint through compile-time optimization. It provides a cohesive platform integrating popular libraries and standards, supporting both JVM and native executable deployments with live reload capabilities.

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 ↗

Quarkus

Open sourceFree tier
as of verify ↗

Platform & deployment

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

Platforms
Web
FastAPI✓
Quarkus✗
macOS
FastAPI✗
Quarkus✓
Windows
FastAPI✗
Quarkus✓
Linux
FastAPI✗
Quarkus✓
CLI
FastAPI✓
Quarkus✓
Deployment
Cloud / SaaS
FastAPI✓
Quarkus✓

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

Quarkus

25 total
  • Eclipse Vert.x
  • Hibernate
  • Apache Camel
  • JAX-RS
  • RESTEasy
  • Netty
  • Eclipse MicroProfile
  • Hibernate ORM
  • JPA
  • Jackson
  • GraphQL
  • Redis
  • Kubernetes
  • OIDC
  • Liquibase
  • GraalVM
  • PostgreSQL
  • MySQL
  • Micrometer
  • Prometheus
  • gRPC
  • Keycloak
  • OAuth
  • OpenShift
  • +1 more
Independently observed
Still deciding?

FastAPI or Quarkus: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

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