vioscaleAI
Comparison

FastAPI vs Next.js

No clear leader: Next.js (81.8) and FastAPI (78.1) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

FastAPI full profile →Next.js full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
FastAPI78
Next.js82
Score
vioscaleAI score
FastAPI78 / 100medium · 69%
Next.js82 / 100high · 76%
Pricing
Free tier
FastAPI✓
Next.js✓
Model
Price level
FastAPIfree
Next.jsfree
Transparent
FastAPI–
Next.js✓
Integrations
Count
FastAPI11
Next.js4
Security
Scorecard
FastAPI–
Next.js6.2
Soc2
FastAPI–
Next.js✗
Trust center
Vulnerabilities
Reliability
Status page
FastAPI✓
Next.js✓
Adoption
Dependent repos
FastAPI43,608
Next.js304,007
Github stars
FastAPI102,768
Next.js143,019
Package downloads weekly
FastAPI97,378,207
Next.js67,469,854
Stackoverflow questions
FastAPI31,000
Next.js148,000
Activity
Commits last 30d
FastAPI63
Next.js100
Release
Cadence days
FastAPI14
Next.js9
History
FastAPI20 items
Next.js20 items
License
Spdx
FastAPIMIT
Next.jsMIT
Language
Primary
FastAPIPython
Next.jsJavaScript
Market
Availability
Content
Faq
FastAPI8 items
Next.js8 items

Capabilities

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

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

What each one is

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

FastAPI

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

Next.js

Next.js provides a complete framework for creating full-stack web applications by combining React components with built-in routing, rendering, data fetching, caching, and build tooling. It enables developers to write both frontend UI and backend API endpoints within a unified application structure.

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

Open sourceFree tier
as of verify ↗

Next.js

Open sourceFree tier

Open source (MIT license), free to use

as of verify ↗

Platform & deployment

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

Platforms
Web
FastAPI✓
Next.js✓
CLI
FastAPI✓
Next.js✓
Deployment
Cloud / SaaS
FastAPI✓
Next.js✓

Integrations

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

FastAPI

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

Next.js

5 total
  • Cloudinary
  • Netlify
  • Cloudflare
  • Google Cloud
  • AWS Amplify
Independently observed
Still deciding?

FastAPI or Next.js: 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.