Comparison

FastAPI vs Next.js

On the evidence we track, Next.js leads this comparison with a composite score of 84/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

FastAPI full profile →Next.js full profile →

Machine formatsJSON Markdown GraphQLor send Accept: application/json

FastAPI73

★Next.js84

Attribute comparison across 2 tools
Attribute	FastAPI	Next.jsLeader
Vioscale score	73 / 100high · 78%updating	84 / 100high · 76%updating
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	commercial	open_source
Price levelpricing.price_level	free	free
Transparentpricing.transparent	-	✓
Integrations
Countintegrations.count	11	1
Security
Scorecardsecurity.scorecard	-	6.2
Soc2security.soc2	-	✗
Vulnerabilitiessecurity.vulnerabilities	Count: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=fastapi&per_page=100 · Last 12m: 0 · Max severity: HIGH	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40next%2Fenv&per_page=100 · Last 12m: 0
Reliability
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	43,608	304,007
Github starsadoption.github_stars	101,862	141,941
Package downloads weeklyadoption.package_downloads_weekly	127,838,650	54,344,634
Stackoverflow questionsadoption.stackoverflow_questions	31,000	148,000
Activity
Commits last 30dactivity.commits_last_30d	210	640
Release
Cadence daysrelease.cadence_days	14	9
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	MIT
Language
Primarylanguage.primary	Python	JavaScript
Market
Availabilitymarket.availability	Available worldwide · HQ ES	Available worldwide
Content
Faqcontent.faq	8 items	8 items

Score

Vioscale score

FastAPI73 / 100high · 78%updating

Next.js84 / 100high · 76%updating

Pricing

Free tier

FastAPI✓

Next.js✓

Model

FastAPIcommercial

Next.jsopen_source

Price level

FastAPIfree

Next.jsfree

Transparent

FastAPI–

Next.js✓

Integrations

Count

FastAPI11

Next.js1

Security

Scorecard

FastAPI–

Next.js6.2

Soc2

FastAPI–

Next.js✗

Vulnerabilities

FastAPICount: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=fastapi&per_page=100 · Last 12m: 0 · Max severity: HIGH

Next.jsCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40next%2Fenv&per_page=100 · Last 12m: 0

Reliability

Status page

FastAPI✓

Next.js✓

Adoption

Dependent repos

FastAPI43,608

Next.js304,007

Github stars

FastAPI101,862

Next.js141,941

Package downloads weekly

FastAPI127,838,650

Next.js54,344,634

Stackoverflow questions

FastAPI31,000

Next.js148,000

Activity

Commits last 30d

FastAPI210

Next.js640

Release

Cadence days

FastAPI14

Next.js9

History

FastAPI20 items

Next.js20 items

License

Spdx

FastAPIMIT

Next.jsMIT

Language

Primary

FastAPIPython

Next.jsJavaScript

Market

Availability

FastAPIAvailable worldwide · HQ ES

Next.jsAvailable worldwide

Content

Faq

FastAPI8 items

Next.js8 items

Capabilities

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

Capability comparison for Web Frameworks
Capability	FastAPI	Next.js
Core
Rendering model	-	Hybrid (SSR+SSG+CSR)
File-based routing	-	✓
Language	Python	JavaScript/TypeScript
Rendering
Server components	-	✓
Streaming SSR	-	✓
Fullstack
Built-in API / backend routes	✓	✓
DX
First-class TypeScript	-	✓
Fast refresh / HMR	✓	-
Deployment
Edge runtime support	-	-

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✓

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

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

Next.js

Leader

Next.js is a React-based web framework that provides server-side rendering, static site generation, API routes, and file-based routing to enable developers to create optimized production-ready applications.

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 2026-08-14verify ↗

Next.js

Leader

Open sourceFree tier

Open source (MIT license), free to use

as of 2026-08-14verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	FastAPI	Next.js
WebPlatforms	✓	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✓

Platforms

Web

FastAPI✓

Next.js✓

CLI

FastAPI✓

Next.js✓

Deployment

Cloud / SaaS

FastAPI✓

Next.js✓

Self-hosted

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

Leader

1 total

Cloudinary

Independently observed

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