Comparison

Checkstyle vs mypy

On the evidence we track, mypy leads this comparison with a composite score of 69/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Checkstyle full profile →mypy full profile →

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.

Checkstyle60

★mypy69

Attribute comparison across 2 tools
Attribute	Checkstyle	mypyLeader
vioscaleAI score	60 / 100low · 49%	69 / 100medium · 66%
Pricing
Free tierpricing.free_tier	✓	-
Modelpricing.model	open_source	open_source
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	7	1
Security
Scorecardsecurity.scorecard	7	6.8
Vulnerabilitiessecurity.vulnerabilities	Count: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.puppycrawl.tools%3Acheckstyle&per_page=100 · Last 12m: 0 · Max severity: MODERATE	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mypy&per_page=100 · Last 12m: 0
Reliability
Status pagereliability.status_page	✓	-
Adoption
Dependent reposadoption.dependent_repos	1,425	52,771
Github starsadoption.github_stars	9,599	20,682
Package downloads weeklyadoption.package_downloads_weekly	-	42,892,033
Activity
Commits last 30dactivity.commits_last_30d	100	100
Release
Cadence daysrelease.cadence_days	13	-
Historyrelease.history	20 items	-
License
Spdxlicense.spdx	LGPL-2.1	-
Language
Primarylanguage.primary	Java	Python
Content
Faqcontent.faq	4 items	3 items

Score

vioscaleAI score

Checkstyle60 / 100low · 49%

mypy69 / 100medium · 66%

Pricing

Free tier

Checkstyle✓

mypy–

Model

Checkstyleopen_source

mypyopen_source

Price level

Checkstylefree

mypyfree

Transparent

Checkstyle✓

mypy–

Integrations

Count

Checkstyle7

mypy1

Security

Scorecard

Checkstyle7

mypy6.8

Vulnerabilities

CheckstyleCount: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.puppycrawl.tools%3Acheckstyle&per_page=100 · Last 12m: 0 · Max severity: MODERATE

mypyCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mypy&per_page=100 · Last 12m: 0

Reliability

Status page

Checkstyle✓

mypy–

Adoption

Dependent repos

Checkstyle1,425

mypy52,771

Github stars

Checkstyle9,599

mypy20,682

Package downloads weekly

Checkstyle–

mypy42,892,033

Activity

Commits last 30d

Checkstyle100

mypy100

Release

Cadence days

Checkstyle13

mypy–

History

Checkstyle20 items

mypy–

License

Spdx

CheckstyleLGPL-2.1

mypy–

Language

Primary

CheckstyleJava

mypyPython

Content

Faq

Checkstyle4 items

mypy3 items

Capabilities

Feature-by-feature on the axes that matter for code quality tools. “-” means undocumented, not absent.

Capability comparison for Code Quality Tools
Capability	Checkstyle	mypy
Core
Function	Static analyzer	Type checker
Language scope	Single-language	Single-language
Implementation language	Java	Python
Capability
Autofix	✗	✗
Config
Config model	Config file	-
Extensibility
Custom rules	✓	✗
Deployment
Deployment	CLI-local	CLI-local
Delivery
Editor integration	✓	✓
CI / VCS gating	✓	✓
Insight
Code metrics	✓	✗
Performance
Incremental / monorepo aware	-	✓
Licensing
Open-source	OSS	OSS
Commercial
Pricing model	Free	Free

Core

Function

CheckstyleStatic analyzer

mypyType checker

Language scope

CheckstyleSingle-language

mypySingle-language

Implementation language

CheckstyleJava

mypyPython

Capability

Autofix

Checkstyle✗

mypy✗

Config

Config model

CheckstyleConfig file

mypy-

Extensibility

Custom rules

Checkstyle✓

mypy✗

Deployment

CheckstyleCLI-local

mypyCLI-local

Delivery

Editor integration

Checkstyle✓

mypy✓

CI / VCS gating

Checkstyle✓

mypy✓

Insight

Code metrics

Checkstyle✓

mypy✗

Performance

Incremental / monorepo aware

Checkstyle-

mypy✓

Licensing

Open-source

CheckstyleOSS

mypyOSS

Commercial

Pricing model

CheckstyleFree

mypyFree

What each one is

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

Checkstyle

Checkstyle analyzes Java source code against configurable rules covering naming, imports, formatting, Javadoc, and class design. It enables teams to maintain consistent coding standards through CLI, IDE plugins, and CI/CD integrations.

Independently observed

mypy

Leader

A static type checker that analyzes Python code to catch type errors before runtime. Supports gradual typing, allowing you to mix static and dynamic typing and incrementally add type hints to existing codebases.

Independently observed

Pricing

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

Checkstyle

Open source

as of 2026-10-14verify ↗

mypy

Leader

Open source

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	Checkstyle	mypy
CLIPlatforms	✓	✓
Self-hostedDeployment	✓	✓

Platforms

CLI

Checkstyle✓

mypy✓

Deployment

Self-hosted

Checkstyle✓

mypy✓

Integrations

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

Checkstyle

8 total

Maven
Ant
Eclipse
IntelliJ IDEA
Neovim
Code Climate
GitHub Actions
Apache Ant

Independently observed

mypy

Leader

1 total

VS Code

Independently observed

Still deciding?

Checkstyle or mypy: 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.