# Biome vs Qlty

**Leader by vioscaleAI score:** Biome

| Attribute | Biome | Qlty |
|---|---|---|
| **vioscaleAI score** | 68.2 (68% (medium)) | 53.9 (49% (low)) |
| activity.commits_last_30d | 100 | 45 |
| adoption.dependent_repos | 587 | 0 |
| adoption.github_stars | 25,952 | 3,186 |
| adoption.package_downloads_weekly | 17,944,016 | - |
| 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 code quality platform that automatically analyzes pull requests for linting, formatting, security issues, and code coverage with AI-generated fixes. Supports 40+ languages and integrates with GitHub, IDEs, and CI systems. It is indexed under Code Quality Tools.","source":"https://qlty.sh/pricing","question":"What is Qlty?","confidence":0.6},{"answer":"Qlty offers a free tier, so you can start without paying. Paid plans start at $20 per contributor per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://qlty.sh/pricing","question":"Is Qlty free?","confidence":0.6},{"answer":"Qlty supports the web, Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://qlty.sh/pricing","question":"What platforms does Qlty support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Qlty, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://qlty.sh/pricing","question":"Can Qlty be self-hosted?","confidence":0.6},{"answer":"We have confirmed 5 integrations for Qlty, including GitHub, Visual Studio Code, CircleCI, Chrome and Firefox. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://qlty.sh/pricing","question":"What does Qlty integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2 for Qlty. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Qlty not holding them. Always confirm compliance directly before you rely on it.","source":"https://qlty.sh/pricing","question":"What security certifications does Qlty have?","confidence":0.6},{"answer":"Qlty is available worldwide. Its primary market is the United States.","source":"https://qlty.sh/pricing","question":"Where is Qlty available?","confidence":0.5}]` |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true}` |
| description.long | An all-in-one code formatter and linter built with Rust that can format code, identify issues, and improve code quality with high performance and minimal setup required. | A code quality and coverage platform combining linting, auto-formatting, security scanning, duplication detection, and code coverage analysis with AI-powered fix suggestions, deployed as a cloud service with a local CLI. |
| 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":true,"metrics":true,"function":"quality_platform","ci_gating":true,"deployment":"both","incremental":true,"open_source":"open_core","config_model":"config_file","custom_rules":true,"impl_language":"Rust","pricing_model":"per_contributor","language_scope":"multi_language","editor_integration":true}` |
| integrations.count | 3 | 6 |
| integrations.list | `[{"name":"ESLint"},{"name":"TypeScript ESLint"},{"name":"Prettier"}]` | `[{"name":"GitHub"},{"name":"Visual Studio Code"},{"name":"GitHub Actions"},{"name":"CircleCI"},{"name":"Chrome"},{"name":"Firefox"}]` |
| language.primary | Rust | C |
| license.spdx | Apache-2.0 | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true}` | `{"cli":true,"mac":true,"web":true,"linux":true,"windows":true}` |
| pricing | `{"type":"hybrid","summary":"Open source with optional commercial support available","freeTier":true,"sourceUrl":"https://biomejs.dev","retrievedAt":"2026-10-14T22:38:11.019Z"}` | `{"type":"hybrid","plans":[{"free":true,"name":"Free","summary":"Free","features":["Linting & auto-formatting","Code coverage","Maintainability & duplication","Open, extensible Rust CLI","Unlimited private/public contributors","Community support"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Linting, auto-formatting, and code coverage with Rust CLI","contactSales":false,"includedLimits":{"ai_autofixes":"100/month","analysis_minutes":"1,000/month"}},{"free":false,"name":"Pro","summary":"$20/contributor/month","features":["Everything from Free","Shared configurations","Trends & hotspots","One year of history","Accelerated analysis","Security scanning (SAST, SCA)","Secrets scanning","Infrastructure as Code (IaC) security","Custom checks","REST API","Monorepo support","Analytics & Reporting","GitHub single sign-on (SSO)","Email support","Web-based support"],"components":[{"kind":"per_unit","unit":"contributor","amount":20,"period":"month","currency":"USD"}],"description":"Complete code quality platform with advanced analytics and support","contactSales":false,"includedLimits":{"ai_autofixes":"5,000/month","analysis_minutes":"20,000/month"}},{"free":false,"name":"Enterprise","summary":"$30/contributor/month (minimum $10k/year for annual invoicing)","features":["Everything from Pro","Advanced analytics","Organization policies","Custom permissions","Audit logs","SOC 2 Type II certification","Priority support with SLA","Uptime SLA","Named account manager","Consolidated billing","Invoiced billing"],"components":[{"kind":"per_unit","unit":"contributor","amount":30,"period":"month","currency":"USD"}],"description":"Advanced platform with organization controls, priority support, and custom terms","contactSales":true,"includedLimits":{"ai_autofixes":"75,000/month","analysis_minutes":"75,000/month"}}],"addOns":[{"name":"Additional analysis minutes","components":[{"per":{"qty":1,"unit":"analysis_minute"},"kind":"metered","amount":0.01,"currency":"USD"}]}],"summary":"Free plan available. Pro from $20/contributor/month. Enterprise $30/contributor/month with volume discounts (5% off 100+ seats, 10% off 200+ seats annually).","currency":"USD","freeTier":true,"sourceUrl":"https://qlty.sh/pricing","retrievedAt":"2026-10-14T21:32:52.231Z","startingPrice":{"unit":"contributor","amount":20,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | low | mid |
| pricing.starting_price | - | `{"amount":20,"currency":"USD"}` |
| pricing.transparent | no | yes |
| release.cadence_days | 6 | 2 |
| release.history | `[{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.15","date":"2026-09-30T15:23:21Z","type":"stable","version":"@biomejs/biome@2.5.15"},{"url":"https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.14","date":"2026-09-16T07:52:49Z","type":"stable","version":"@biomejs/biome@2.5.14"},{"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/qltysh/qlty/releases/tag/v0.654.0","date":"2026-10-13T03:22:30Z","type":"stable","version":"v0.654.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.653.0","date":"2026-10-08T23:08:27Z","type":"stable","version":"v0.653.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.652.0","date":"2026-10-06T12:45:09Z","type":"stable","version":"v0.652.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.651.0","date":"2026-10-01T16:52:46Z","type":"stable","version":"v0.651.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.650.0","date":"2026-09-30T18:29:14Z","type":"stable","version":"v0.650.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.649.0","date":"2026-09-26T19:36:10Z","type":"stable","version":"v0.649.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.648.0","date":"2026-09-25T21:01:31Z","type":"stable","version":"v0.648.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.646.0","date":"2026-09-25T18:59:52Z","type":"stable","version":"v0.646.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.645.0","date":"2026-09-23T20:12:00Z","type":"stable","version":"v0.645.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.644.0","date":"2026-08-28T20:39:51Z","type":"stable","version":"v0.644.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.643.0","date":"2026-08-22T00:41:59Z","type":"stable","version":"v0.643.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.642.0","date":"2026-08-14T21:22:17Z","type":"stable","version":"v0.642.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.641.0","date":"2026-08-03T21:23:53Z","type":"stable","version":"v0.641.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.640.0","date":"2026-07-28T18:38:45Z","type":"stable","version":"v0.640.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.639.0","date":"2026-07-23T21:03:00Z","type":"stable","version":"v0.639.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.638.0","date":"2026-07-22T18:48:37Z","type":"stable","version":"v0.638.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.637.0","date":"2026-07-21T22:17:30Z","type":"stable","version":"v0.637.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.636.0","date":"2026-07-20T15:35:09Z","type":"stable","version":"v0.636.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.635.0","date":"2026-07-17T15:50:51Z","type":"stable","version":"v0.635.0"},{"url":"https://github.com/qltysh/qlty/releases/tag/v0.634.0","date":"2026-07-15T19:45:17Z","type":"stable","version":"v0.634.0"}]` |
| reliability.status_page | - | yes |
| security.certifications | - | `[{"name":"SOC 2 Type II","level":"Type II","status":"active"}]` |
| security.soc2 | - | yes |
| 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=cargo&package_name=qlty-llm&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Code Quality Tools)

| Capability | Biome | Qlty |
|---|:--:|:--:|
| **Core** |  |  |
| Function | Linter + formatter | Quality platform |
| Language scope | Multi-language | Multi-language |
| Implementation language | Rust | Rust |
| **Capability** |  |  |
| Autofix | ✓ | ✓ |
| **Config** |  |  |
| Config model | Zero-config | Config file |
| **Extensibility** |  |  |
| Custom rules | - | ✓ |
| **Deployment** |  |  |
| Deployment | CLI-local | Both |
| **Delivery** |  |  |
| Editor integration | ✓ | ✓ |
| CI / VCS gating | ✓ | ✓ |
| **Insight** |  |  |
| Code metrics | - | ✓ |
| **Performance** |  |  |
| Incremental / monorepo aware | - | ✓ |
| **Licensing** |  |  |
| Open-source | OSS | Open-core |
| **Commercial** |  |  |
| Pricing model | Free | Per-contributor |

*Source: vioscaleAI. Generated 2026-10-16T09:51:33.814Z. "-" = undocumented, not absent.*