# ast-grep vs Prettier

**Leader by vioscaleAI score:** Prettier

| Attribute | ast-grep | Prettier |
|---|---|---|
| **vioscaleAI score** | 54.8 (35% (low)) | 80.2 (78% (high)) |
| activity.commits_last_30d | 33 | 100 |
| adoption.dependent_repos | 177 | 1,703,312 |
| adoption.github_stars | 16,225 | 52,446 |
| adoption.package_downloads_weekly | - | 139,976,809 |
| content.faq | `[{"answer":"A structural code search and rewriting tool that uses AST analysis to locate and modify code patterns across thousands of files, with support for linting and programmatic access via Node.js bindings. It is indexed under Code Quality Tools.","source":"https://ast-grep.github.io","question":"What is ast-grep?","confidence":0.6},{"answer":"ast-grep is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://ast-grep.github.io","question":"Is ast-grep free to use?","confidence":0.6},{"answer":"ast-grep supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://ast-grep.github.io","question":"What platforms does ast-grep support?","confidence":0.6},{"answer":"Yes. ast-grep can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://ast-grep.github.io","question":"Can ast-grep be self-hosted?","confidence":0.6},{"answer":"Yes. ast-grep is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/ast-grep/ast-grep","question":"Is ast-grep open source?","confidence":0.95}]` | `[{"answer":"Prettier is a code formatting tool that parses source code and reprints it with its own consistent style rules. It integrates with editors and CI systems to format code automatically on save or in version control workflows, reducing style-related code review discussions. It is indexed under Code Quality Tools.","source":"https://prettier.io","question":"What is Prettier?","confidence":0.6},{"answer":"Prettier is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://prettier.io","question":"Is Prettier free to use?","confidence":0.6},{"answer":"Prettier supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://prettier.io","question":"What platforms does Prettier support?","confidence":0.6},{"answer":"Yes. Prettier can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://prettier.io","question":"Can Prettier be self-hosted?","confidence":0.6},{"answer":"We have confirmed 7 integrations for Prettier, including VS Code, WebStorm, Vim, Sublime Text, Emacs, Visual Studio and Nova. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://prettier.io","question":"What does Prettier integrate with?","confidence":0.6},{"answer":"Yes. Prettier is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/prettier/prettier","question":"Is Prettier open source?","confidence":0.99}]` |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | Find and modify code patterns using abstract syntax tree analysis. Useful for linting, refactoring, and enforcing coding standards. | An automatic formatting tool that parses code and reformats it according to opinionated style rules, adjusting wrapping based on line length constraints. |
| features.capabilities | `{"autofix":true,"function":"static_analyzer","deployment":"cli_local","open_source":"oss","config_model":"rule_packs","custom_rules":true,"impl_language":"Rust","pricing_model":"free","language_scope":"multi_language","editor_integration":true}` | `{"autofix":true,"metrics":false,"function":"formatter","ci_gating":true,"deployment":"cli_local","incremental":true,"open_source":"oss","config_model":"config_file","custom_rules":false,"impl_language":"JavaScript","pricing_model":"free","language_scope":"multi_language","editor_integration":true}` |
| integrations.count | - | 19 |
| integrations.list | - | `[{"name":"VS Code"},{"name":"WebStorm"},{"name":"Vim"},{"name":"Sublime Text"},{"name":"Emacs"},{"name":"Visual Studio"},{"name":"Nova"},{"name":"Neovim"}]` |
| language.primary | Rust | JavaScript |
| license.spdx | MIT | MIT |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true}` | `{"cli":true,"web":true}` |
| pricing | `{"type":"open_source","summary":"Free and open source","sourceUrl":"https://ast-grep.github.io","retrievedAt":"2026-10-13T13:48:30.935Z"}` | `{"type":"open_source","summary":"Free and open source","freeTier":true,"sourceUrl":"https://prettier.io","retrievedAt":"2026-08-14T13:46:04.335Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | commercial |
| pricing.price_level | free | free |
| pricing.transparent | - | yes |
| release.cadence_days | 15 | 5 |
| release.history | `[{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.50.0","date":"2026-10-09T14:19:44Z","type":"stable","version":"0.50.0"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.45.3","date":"2026-08-31T01:42:23Z","type":"stable","version":"0.45.3"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.45.2","date":"2026-08-23T19:48:48Z","type":"stable","version":"0.45.2"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.45.1","date":"2026-08-07T15:13:34Z","type":"stable","version":"0.45.1"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.45.0","date":"2026-07-23T16:07:00Z","type":"stable","version":"0.45.0"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.44.1","date":"2026-07-04T14:06:40Z","type":"stable","version":"0.44.1"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.44.0","date":"2026-06-22T01:49:47Z","type":"stable","version":"0.44.0"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.43.0","date":"2026-05-25T17:54:30Z","type":"stable","version":"0.43.0"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.42.3","date":"2026-05-19T15:18:18Z","type":"stable","version":"0.42.3"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.42.2","date":"2026-05-10T21:58:34Z","type":"stable","version":"0.42.2"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.42.1","date":"2026-04-04T16:01:20Z","type":"stable","version":"0.42.1"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.42.0","date":"2026-03-16T03:29:14Z","type":"stable","version":"0.42.0"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.41.1","date":"2026-03-10T14:04:27Z","type":"stable","version":"0.41.1"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.41.0","date":"2026-02-22T18:57:13Z","type":"stable","version":"0.41.0"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.40.5","date":"2026-01-10T17:57:43Z","type":"stable","version":"0.40.5"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.40.4","date":"2026-01-05T01:22:05Z","type":"stable","version":"0.40.4"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.40.3","date":"2025-12-15T15:38:42Z","type":"stable","version":"0.40.3"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.40.2","date":"2025-12-14T22:38:05Z","type":"stable","version":"0.40.2"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.40.1","date":"2025-12-11T05:41:28Z","type":"stable","version":"0.40.1"},{"url":"https://github.com/ast-grep/ast-grep/releases/tag/0.40.0","date":"2025-11-16T04:57:10Z","type":"stable","version":"0.40.0"}]` | `[{"url":"https://github.com/prettier/prettier/releases/tag/3.9.10","date":"2026-10-10T08:36:47Z","type":"stable","version":"3.9.10"},{"url":"https://github.com/prettier/prettier/releases/tag/3.9.9","date":"2026-09-23T06:33:12Z","type":"stable","version":"3.9.9"},{"url":"https://github.com/prettier/prettier/releases/tag/3.9.8","date":"2026-09-17T21:55:32Z","type":"stable","version":"3.9.8"},{"url":"https://github.com/prettier/prettier/releases/tag/3.9.7","date":"2026-09-16T08:27:53Z","type":"stable","version":"3.9.7"},{"url":"https://github.com/prettier/prettier/releases/tag/3.9.6","date":"2026-07-21T05:52:55Z","type":"stable","version":"3.9.6"},{"url":"https://github.com/prettier/prettier/releases/tag/3.9.5","date":"2026-07-09T16:22:50Z","type":"stable","version":"3.9.5"},{"url":"https://github.com/prettier/prettier/releases/tag/3.9.4","date":"2026-06-30T01:21:45Z","type":"stable","version":"3.9.4"},{"url":"https://github.com/prettier/prettier/releases/tag/3.9.3","date":"2026-06-29T11:38:44Z","type":"stable","version":"3.9.3"},{"url":"https://github.com/prettier/prettier/releases/tag/3.9.1","date":"2026-06-27T23:06:22Z","type":"stable","version":"3.9.1"},{"url":"https://github.com/prettier/prettier/releases/tag/3.9.0","date":"2026-06-27T10:28:04Z","type":"stable","version":"3.9.0"},{"url":"https://github.com/prettier/prettier/releases/tag/3.8.5","date":"2026-06-26T13:00:46Z","type":"stable","version":"3.8.5"},{"url":"https://github.com/prettier/prettier/releases/tag/3.8.4","date":"2026-06-09T11:31:30Z","type":"stable","version":"3.8.4"},{"url":"https://github.com/prettier/prettier/releases/tag/3.8.3","date":"2026-04-15T01:00:35Z","type":"stable","version":"3.8.3"},{"url":"https://github.com/prettier/prettier/releases/tag/3.8.2","date":"2026-04-10T02:44:52Z","type":"stable","version":"3.8.2"},{"url":"https://github.com/prettier/prettier/releases/tag/3.8.1","date":"2026-01-21T17:50:23Z","type":"stable","version":"3.8.1"},{"url":"https://github.com/prettier/prettier/releases/tag/3.8.0","date":"2026-01-14T23:56:57Z","type":"stable","version":"3.8.0"},{"url":"https://github.com/prettier/prettier/releases/tag/3.7.4","date":"2025-12-03T04:37:09Z","type":"stable","version":"3.7.4"},{"url":"https://github.com/prettier/prettier/releases/tag/3.7.3","date":"2025-11-29T17:55:30Z","type":"stable","version":"3.7.3"},{"url":"https://github.com/prettier/prettier/releases/tag/3.7.2","date":"2025-11-28T20:58:56Z","type":"stable","version":"3.7.2"},{"url":"https://github.com/prettier/prettier/releases/tag/3.7.1","date":"2025-11-27T11:32:54Z","type":"stable","version":"3.7.1"}]` |
| security.scorecard | - | 6 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40ast-grep%2Fnapi&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=prettier&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (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 |

*Source: vioscaleAI. Generated 2026-10-16T20:10:31.688Z. "-" = undocumented, not absent.*