Comparison

mypy vs Psalm

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.

mypy full profile →Psalm full profile →

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

★mypy69

Psalm64

Attribute comparison across 2 tools
Attribute	mypyLeader	Psalm
vioscaleAI score	69 / 100medium · 66%	64 / 100low · 42%
Pricing
Free tierpricing.free_tier	-	✓
Modelpricing.model	open_source	commercial
Price levelpricing.price_level	free	free
Transparentpricing.transparent	-	✓
Integrations
Countintegrations.count	1	-
Security
Scorecardsecurity.scorecard	6.8	4.7
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mypy&per_page=100 · Last 12m: 0	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=packagist&package_name=vimeo%2Fpsalm&per_page=100 · Last 12m: 0
Adoption
Dependent reposadoption.dependent_repos	52,771	15,920
Github starsadoption.github_stars	20,682	5,896
Package downloads weeklyadoption.package_downloads_weekly	42,892,033	-
Activity
Commits last 30dactivity.commits_last_30d	100	100
Release
Cadence daysrelease.cadence_days	-	1
Historyrelease.history	-	20 items
License
Spdxlicense.spdx	-	MIT
Language
Primarylanguage.primary	Python	PHP
Content
Faqcontent.faq	3 items	5 items

Score

vioscaleAI score

mypy69 / 100medium · 66%

Psalm64 / 100low · 42%

Pricing

Free tier

mypy–

Psalm✓

Model

mypyopen_source

Psalmcommercial

Price level

mypyfree

Psalmfree

Transparent

mypy–

Psalm✓

Integrations

Count

mypy1

Psalm–

Security

Scorecard

mypy6.8

Psalm4.7

Vulnerabilities

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

PsalmCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=packagist&package_name=vimeo%2Fpsalm&per_page=100 · Last 12m: 0

Adoption

Dependent repos

mypy52,771

Psalm15,920

Github stars

mypy20,682

Psalm5,896

Package downloads weekly

mypy42,892,033

Psalm–

Activity

Commits last 30d

mypy100

Psalm100

Release

Cadence days

mypy–

Psalm1

History

mypy–

Psalm20 items

License

Spdx

mypy–

PsalmMIT

Language

Primary

mypyPython

PsalmPHP

Content

Faq

mypy3 items

Psalm5 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	mypy	Psalm
Core
Function	Type checker	Static analyzer
Language scope	Single-language	Single-language
Implementation language	Python	PHP
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

mypyType checker

PsalmStatic analyzer

Language scope

mypySingle-language

PsalmSingle-language

Implementation language

mypyPython

PsalmPHP

Capability

Autofix

mypy✗

Psalm✓

Config

Config model

mypy-

PsalmConfig file

Extensibility

Custom rules

mypy✗

Psalm✓

Deployment

mypyCLI-local

PsalmCLI-local

Delivery

Editor integration

mypy✓

Psalm✓

CI / VCS gating

mypy✓

Psalm✓

Insight

Code metrics

mypy✗

Psalm✓

Performance

Incremental / monorepo aware

mypy✓

Psalm-

Licensing

Open-source

mypyOSS

PsalmOSS

Commercial

Pricing model

mypyFree

PsalmFree

What each one is

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

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

Psalm

Psalm scans PHP codebases to discover potential problems and includes Psalter, a tool for automatically fixing identified issues with configurable safety measures and PHP version targeting.

Independently observed

Pricing

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

mypy

Leader

Open source

as of 2026-08-14verify ↗

Psalm

Open sourceFree tier

Free and open-source. Optional paid support contracts available.

Open SourceFree

as of 2026-08-03verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	mypy	Psalm
CLIPlatforms	✓	✓
Self-hostedDeployment	✓	✓

Platforms

CLI

mypy✓

Psalm✓

Deployment

Self-hosted

mypy✓

Psalm✓

Integrations

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

mypy

Leader

1 total

VS Code

Independently observed

Psalm

Not documented yet.

Still deciding?

mypy or Psalm: 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.