# Biome vs mypy

| Attribute | Biome | mypy |
|---|---|---|
| **vioscaleAI score** | 67 (67% (medium)) | 66.7 (67% (medium)) |
| activity.commits_last_30d | 100 | 40 |
| adoption.dependent_repos | 587 | 52,771 |
| adoption.github_stars | 25,756 | 20,638 |
| adoption.package_downloads_weekly | 8,086,313 | 34,578,814 |
| content.faq | `[{"answer":"A fast command-line tool that formats and lints JavaScript, TypeScript, and web-related file types, combining formatter and linter functionality to streamline development workflows. It is indexed under Code Quality Tools.","source":"https://biomejs.dev","question":"What is Biome?","confidence":0.6},{"answer":"Biome offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://biomejs.dev","question":"Is Biome free?","confidence":0.6},{"answer":"Biome supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://biomejs.dev","question":"What platforms does Biome support?","confidence":0.6},{"answer":"Yes. Biome can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://biomejs.dev","question":"Can Biome be self-hosted?","confidence":0.6},{"answer":"Yes. Biome is published under the Apache-2.0 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/biomejs/biome","question":"Is Biome open source?","confidence":0.67}]` | `[{"answer":"A type analysis tool for Python that enables code to transition from pure dynamic typing to statically-typed code through annotations, with error detection at check time. Code runs with negligible performance impact and developers can incrementally adopt static types in existing projects. It is indexed under Code Quality Tools.","source":"https://mypy-lang.org","question":"What is mypy?","confidence":0.6},{"answer":"mypy is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://mypy-lang.org","question":"Is mypy free to use?","confidence":0.6},{"answer":"mypy supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://mypy-lang.org","question":"What platforms does mypy support?","confidence":0.6}]` |
| deployment.options | `{"self_hosted":true}` | - |
| description.long | Biome is an open-source toolchain built in Rust that combines code formatting with static analysis through hundreds of lint rules. It requires zero configuration by default while supporting TypeScript and JSX as first-class languages. | A tool that verifies Python code for type correctness using optional type hints, enabling developers to catch errors before running the code. |
| features.capabilities | `{"autofix":true,"function":"linter_formatter","ci_gating":true,"deployment":"cli_local","open_source":"oss","config_model":"zero_config","impl_language":"Rust","pricing_model":"free","language_scope":"multi_language","editor_integration":true}` | `{"autofix":false,"metrics":false,"function":"type_checker","ci_gating":true,"deployment":"cli_local","incremental":true,"open_source":"oss","custom_rules":false,"impl_language":"Python","pricing_model":"free","language_scope":"single_language","editor_integration":true}` |
| integrations.count | 3 | 1 |
| integrations.list | `[{"name":"ESLint"},{"name":"TypeScript ESLint"},{"name":"Prettier"}]` | `[{"name":"VS Code","native":true}]` |
| language.primary | Rust | Python |
| license.spdx | Apache-2.0 | - |
| platform.support | `{"cli":true}` | `{"cli":true}` |
| pricing | `{"type":"open_source","summary":"Free and open source. Commercial support available for organizations.","sourceUrl":"https://biomejs.dev","retrievedAt":"2026-09-14T09:29:38.444Z"}` | `{"type":"open_source","sourceUrl":"https://mypy-lang.org","retrievedAt":"2026-08-14T13:45:01.127Z"}` |
| pricing.free_tier | yes | - |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| release.cadence_days | 7 | - |
| release.history | `[{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.13","date":"2026-09-10T11:09:51Z","type":"stable","version":"@biomejs/biome@2.5.13"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.12","date":"2026-09-03T07:25:43Z","type":"stable","version":"@biomejs/biome@2.5.12"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.11","date":"2026-08-27T20:49:38Z","type":"stable","version":"@biomejs/biome@2.5.11"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.10","date":"2026-08-21T17:40:37Z","type":"stable","version":"@biomejs/biome@2.5.10"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.9","date":"2026-08-17T23:03:27Z","type":"stable","version":"@biomejs/biome@2.5.9"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.8","date":"2026-08-11T08:52:51Z","type":"stable","version":"@biomejs/biome@2.5.8"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.7","date":"2026-08-04T13:24:41Z","type":"stable","version":"@biomejs/biome@2.5.7"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.6","date":"2026-07-28T09:55:21Z","type":"stable","version":"@biomejs/biome@2.5.6"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.5","date":"2026-07-21T08:02:44Z","type":"stable","version":"@biomejs/biome@2.5.5"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.4","date":"2026-07-15T04:10:08Z","type":"stable","version":"@biomejs/biome@2.5.4"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.3","date":"2026-07-08T08:15:22Z","type":"stable","version":"@biomejs/biome@2.5.3"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.2","date":"2026-07-01T10:32:44Z","type":"stable","version":"@biomejs/biome@2.5.2"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.1","date":"2026-06-23T07:50:58Z","type":"stable","version":"@biomejs/biome@2.5.1"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/js-api%406.0.0","date":"2026-06-12T12:06:53Z","type":"stable","version":"@biomejs/js-api@6.0.0"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.0","date":"2026-06-12T12:09:51Z","type":"stable","version":"@biomejs/biome@2.5.0"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.16","date":"2026-05-27T13:43:14Z","type":"stable","version":"@biomejs/biome@2.4.16"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.15","date":"2026-05-09T17:09:39Z","type":"stable","version":"@biomejs/biome@2.4.15"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.14","date":"2026-05-01T19:24:12Z","type":"stable","version":"@biomejs/biome@2.4.14"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.13","date":"2026-04-23T15:42:43Z","type":"stable","version":"@biomejs/biome@2.4.13"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.12","date":"2026-04-14T18:22:31Z","type":"stable","version":"@biomejs/biome@2.4.12"}]` | - |
| security.scorecard | - | 6.7 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40biomejs%2Fbiome&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mypy&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Code Quality Tools)

| Capability | Biome | mypy |
|---|:--:|:--:|
| **Core** |  |  |
| Function | Linter + formatter | Type checker |
| Language scope | Multi-language | Single-language |
| Implementation language | Rust | Python |
| **Capability** |  |  |
| Autofix | ✓ | ✗ |
| **Config** |  |  |
| Config model | Zero-config | - |
| **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 2026-09-21T02:34:46.592Z. "-" = undocumented, not absent.*