# Bun vs pip

**Leader by vioscaleAI score:** Bun

| Attribute | Bun | pip |
|---|---|---|
| **vioscaleAI score** | 74.2 (56% (medium)) | 63.3 (65% (medium)) |
| activity.commits_last_30d | 100 | 26 |
| adoption.dependent_repos | 21,486 | 35,613 |
| adoption.github_stars | 96,235 | 10,293 |
| adoption.package_downloads_weekly | 3,990,852 | 102,236,751 |
| content.faq | `[{"answer":"Bun is a JavaScript runtime and development toolkit designed as a fast alternative to Node.js with built-in package management, testing, and bundling capabilities. It can be adopted incrementally into existing Node.js projects or used as a complete replacement for development tooling. It is indexed under Package Registries.","source":"https://bun.sh","question":"What is Bun?","confidence":0.6},{"answer":"Bun offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://bun.sh","question":"Is Bun free?","confidence":0.6},{"answer":"Bun supports Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://bun.sh","question":"What platforms does Bun support?","confidence":0.6},{"answer":"Yes. Bun can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://bun.sh","question":"Can Bun be self-hosted?","confidence":0.6},{"answer":"Yes. Bun 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://www.npmjs.com/package/bun","question":"Is Bun open source?","confidence":0.85}]` | `[{"answer":"A package installer for Python that downloads and installs libraries and dependencies from the Python Package Index and other package repositories, enabling developers to manage project dependencies. It is indexed under Package Registries.","source":"https://pip.pypa.io","question":"What is pip?","confidence":0.6},{"answer":"pip offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://pip.pypa.io","question":"Is pip free?","confidence":0.6},{"answer":"pip supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://pip.pypa.io","question":"What platforms does pip support?","confidence":0.6},{"answer":"Yes. pip can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://pip.pypa.io","question":"Can pip be self-hosted?","confidence":0.6},{"answer":"Yes. pip 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/pypa/pip","question":"Is pip open source?","confidence":0.95}]` |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | A JavaScript runtime that executes TypeScript natively using JavaScriptCore, bundling a package manager, bundler, and test runner with Node.js compatibility and npm ecosystem support. | A centralized platform where Python developers publish libraries and tools for others to discover and use in their projects |
| features.capabilities | `{"role":"manager_client","ecosystem":"js","deployment":"cli_local","workspaces":true,"open_source":"oss","pricing_model":"free","upstream_proxy":true,"package_formats":"multi","private_packages":true,"content_addressable":true,"vuln_license_scanning":true,"lockfile_deterministic":true,"supply_chain_integrity":true}` | `{"role":"manager_client","ecosystem":"python","deployment":"cli_local","workspaces":false,"open_source":"oss","pricing_model":"free","upstream_proxy":true,"package_formats":"single","private_packages":true,"content_addressable":false,"vuln_license_scanning":false,"lockfile_deterministic":true,"supply_chain_integrity":false}` |
| integrations.count | - | 0 |
| language.primary | Rust | Python |
| license.spdx | MIT | MIT |
| platform.support | `{"cli":true,"mac":true,"linux":true,"windows":true}` | `{"cli":true}` |
| pricing | `{"type":"open_source","summary":"Free and open source","freeTier":true,"sourceUrl":"https://bun.sh","retrievedAt":"2026-10-14T22:32:45.643Z"}` | `{"type":"free","freeTier":true,"sourceUrl":"https://pip.pypa.io","retrievedAt":"2026-08-14T21:37:32.516Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | free |
| pricing.price_level | free | free |
| pricing.transparent | - | yes |
| release.cadence_days | 14 | - |
| release.history | `[{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.4.3","date":"2026-10-10T05:24:54Z","type":"stable","version":"bun-v1.4.3"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.4.2","date":"2026-09-05T05:55:48Z","type":"stable","version":"bun-v1.4.2"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.4.1","date":"2026-09-04T08:33:19Z","type":"stable","version":"bun-v1.4.1"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.4.0","date":"2026-08-20T14:07:21Z","type":"stable","version":"bun-v1.4.0"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.14","date":"2026-05-13T03:48:28Z","type":"stable","version":"bun-v1.3.14"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.13","date":"2026-04-20T08:07:57Z","type":"stable","version":"bun-v1.3.13"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.12","date":"2026-04-10T03:04:46Z","type":"stable","version":"bun-v1.3.12"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.11","date":"2026-03-18T04:31:40Z","type":"stable","version":"bun-v1.3.11"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.10","date":"2026-02-26T07:08:20Z","type":"stable","version":"bun-v1.3.10"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.9","date":"2026-02-08T09:31:23Z","type":"stable","version":"bun-v1.3.9"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.8","date":"2026-01-29T10:38:16Z","type":"stable","version":"bun-v1.3.8"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.7","date":"2026-01-27T07:04:03Z","type":"stable","version":"bun-v1.3.7"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.6","date":"2026-01-13T02:27:21Z","type":"stable","version":"bun-v1.3.6"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.5","date":"2025-12-17T16:55:41Z","type":"stable","version":"bun-v1.3.5"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.4","date":"2025-12-07T04:53:19Z","type":"stable","version":"bun-v1.3.4"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.3","date":"2025-11-21T19:32:02Z","type":"stable","version":"bun-v1.3.3"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.2","date":"2025-11-08T07:57:10Z","type":"stable","version":"bun-v1.3.2"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.1","date":"2025-10-22T07:53:48Z","type":"stable","version":"bun-v1.3.1"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.3.0","date":"2025-10-10T20:32:14Z","type":"stable","version":"bun-v1.3.0"},{"url":"https://github.com/oven-sh/bun/releases/tag/bun-v1.2.23","date":"2025-09-28T14:23:34Z","type":"stable","version":"bun-v1.2.23"}]` | - |
| reliability.status_page | - | yes |
| security.scorecard | - | 6.5 |
| security.vulnerabilities | `{"count":2,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=bun&per_page=100","last_12m":0,"max_severity":"HIGH"}` | `{"count":13,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=pip&per_page=100","last_12m":5,"max_severity":"HIGH"}` |

## Capabilities (Package Registries)

| Capability | Bun | pip |
|---|:--:|:--:|
| **Core** |  |  |
| Role | Package manager client | Package manager client |
| **Ecosystem** |  |  |
| Ecosystem / language | JavaScript | Python |
| **Deployment** |  |  |
| Deployment | CLI-local | CLI-local |
| **Formats** |  |  |
| Package formats supported | Many formats | Single ecosystem |
| **Hosting** |  |  |
| Private / scoped packages | ✓ | ✓ |
| Upstream proxy / caching | ✓ | ✓ |
| **Resolution** |  |  |
| Lockfile / deterministic installs | ✓ | ✓ |
| Workspaces / monorepo | ✓ | ✗ |
| Content-addressable store | ✓ | ✗ |
| **Supply chain** |  |  |
| Supply-chain integrity | ✓ | ✗ |
| Vulnerability / licence scanning | ✓ | ✗ |
| **Licensing** |  |  |
| Openness | Open-source | Open-source |
| **Pricing** |  |  |
| Pricing model | Free / OSS | Free / OSS |

*Source: vioscaleAI. Generated 2026-10-16T20:51:39.795Z. "-" = undocumented, not absent.*