Comparison

ast-grep vs Prettier

On the evidence we track, Prettier leads this comparison with a composite score of 80/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

ast-grep full profile →Prettier full profile →

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

ast-grep55

★Prettier80

Attribute comparison across 2 tools
Attribute	ast-grep	PrettierLeader
vioscaleAI score	55 / 100low · 35%	80 / 100high · 78%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	commercial
Price levelpricing.price_level	free	free
Transparentpricing.transparent	-	✓
Integrations
Countintegrations.count	-	19
Security
Scorecardsecurity.scorecard	-	6
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40ast-grep%2Fnapi&per_page=100 · Last 12m: 0	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=prettier&per_page=100 · Last 12m: 0
Adoption
Dependent reposadoption.dependent_repos	177	1,703,312
Github starsadoption.github_stars	16,225	52,446
Package downloads weeklyadoption.package_downloads_weekly	-	139,976,809
Activity
Commits last 30dactivity.commits_last_30d	33	100
Release
Cadence daysrelease.cadence_days	15	5
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	MIT
Language
Primarylanguage.primary	Rust	JavaScript
Market
Availabilitymarket.availability	-	Available worldwide
Content
Faqcontent.faq	5 items	6 items

Score

vioscaleAI score

ast-grep55 / 100low · 35%

Prettier80 / 100high · 78%

Pricing

Free tier

ast-grep✓

Prettier✓

Model

ast-grepopen_source

Prettiercommercial

Price level

ast-grepfree

Prettierfree

Transparent

ast-grep–

Prettier✓

Integrations

Count

ast-grep–

Prettier19

Security

Scorecard

ast-grep–

Prettier6

Vulnerabilities

ast-grepCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40ast-grep%2Fnapi&per_page=100 · Last 12m: 0

PrettierCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=prettier&per_page=100 · Last 12m: 0

Adoption

Dependent repos

ast-grep177

Prettier1,703,312

Github stars

ast-grep16,225

Prettier52,446

Package downloads weekly

ast-grep–

Prettier139,976,809

Activity

Commits last 30d

ast-grep33

Prettier100

Release

Cadence days

ast-grep15

Prettier5

History

ast-grep20 items

Prettier20 items

License

Spdx

ast-grepMIT

PrettierMIT

Language

Primary

ast-grepRust

PrettierJavaScript

Market

Availability

ast-grep–

PrettierAvailable worldwide

Content

Faq

ast-grep5 items

Prettier6 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	ast-grep	Prettier
Core
Function	Static analyzer	Formatter
Language scope	Multi-language	Multi-language
Implementation language	Rust	JavaScript
Capability
Autofix	✓	✓
Config
Config model	Rule packs	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

ast-grepStatic analyzer

PrettierFormatter

Language scope

ast-grepMulti-language

PrettierMulti-language

Implementation language

ast-grepRust

PrettierJavaScript

Capability

Autofix

ast-grep✓

Prettier✓

Config

Config model

ast-grepRule packs

PrettierConfig file

Extensibility

Custom rules

ast-grep✓

Prettier✗

Deployment

ast-grepCLI-local

PrettierCLI-local

Delivery

Editor integration

ast-grep✓

Prettier✓

CI / VCS gating

ast-grep-

Prettier✓

Insight

Code metrics

ast-grep-

Prettier✗

Performance

Incremental / monorepo aware

ast-grep-

Prettier✓

Licensing

Open-source

ast-grepOSS

PrettierOSS

Commercial

Pricing model

ast-grepFree

PrettierFree

What each one is

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

ast-grep

Find and modify code patterns using abstract syntax tree analysis. Useful for linting, refactoring, and enforcing coding standards.

Independently observed

Prettier

Leader

An automatic formatting tool that parses code and reformats it according to opinionated style rules, adjusting wrapping based on line length constraints.

Independently observed

Pricing

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

ast-grep

Open source

Free and open source

as of 2026-10-13verify ↗

Prettier

Leader

Open sourceFree tier

Free and 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	ast-grep	Prettier
WebPlatforms	✗	✓
CLIPlatforms	✓	✓
Self-hostedDeployment	✓	✓

Platforms

Web

ast-grep✗

Prettier✓

CLI

ast-grep✓

Prettier✓

Deployment

Self-hosted

ast-grep✓

Prettier✓

Integrations

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

ast-grep

Not documented yet.

Prettier

Leader

8 total

VS Code
WebStorm
Vim
Sublime Text
Emacs
Visual Studio
Nova
Neovim

Independently observed

Still deciding?

ast-grep or Prettier: 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.