Scalar vs Sphinx
Scalar
scalar.com
Sphinx
sphinx-doc.orgSide by side
| Figure | Scalar | Sphinx |
|---|---|---|
| Price from | $150/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 7 | 1 |
| Spec score · Documentation Generators | 8.9 (#2) | 8.2 (#7) |
| Spec score · Knowledge base software | 8.8 (#19) | 8.2 (#61) |
| Spec score · Technical Writing Platforms | 8.8 (#5) | 8.1 (#16) |
| Free plan | Yes | Yes |
| Integrations | Scalar documents more than 35 framework integrations, including Express, Fastify, Hono, NestJS, Next.js, FastAPI, Django, Rails, Laravel, ASP.NET Core, Spring Boot, Go and Rust. | Built-in extensions include GitHub Pages publishing, Graphviz graphs, and intersphinx links to other projects’ documentation. |
| Support | Enterprise includes priority support, SLAs, migration services, and a dedicated Slack or Teams channel. | The project directs users to Stack Overflow, GitHub Discussions, GitHub Issues, or the sphinx-users mailing list for questions and problem reports. |
Plans
Scalar
- FreeFree
- Pro$150 a month
- Business$600 a month
- FreeFree
- Pro$150 a month
- Business$600 a month
- EnterprisePriced on request
In their own words
Scalar
Scalar is a set of API products for documentation, SDK generation, API registries, API requests, and MCP server use. Scalar Docs combines product guides and interactive API references generated from OpenAPI documents in a developer portal. Teams can write in Markdown or MDX, use GitHub content, preview pull requests, and publish through a CLI or after a merge. The SDK Generator builds idiomatic, type-safe client libraries from OpenAPI documents and can publish them through repository pull requests. Registry stores and versions OpenAPI and AsyncAPI documents, JSON Schema, and Spectral rules with Git integration. The open-source API Client works offline for sending requests, organizing collections, and testing APIs from OpenAPI documents. Scalar supports hosted and self-hosted deployment. Its Free plan is free and includes up to three APIs, one SDK with up to 25 endpoints, one editor seat, and 50 Agent Scalar credits. Pro is $150 a month; Business is $600 a month. Scalar states that it has received a SOC 2 Type 1 report and maintains GDPR-compliant privacy practices.
Sphinx
Sphinx is a free Python application that generates technical documentation from structured text. Authors can use reStructuredText or MyST Markdown; Markdown requires installing MyST-Parser separately. Built-in builders produce HTML, LaTeX for PDF, ePub, manual pages, Texinfo, and plain text. References can link sections, figures, tables, citations, glossaries, and code objects within one project or across projects. The autodoc extension imports documented modules and includes material from their docstrings. Themes and extensions, both built-in and third-party, add options such as diagrams, doctests, and API documentation. Other built-in extensions provide GitHub Pages publishing, Graphviz graphs, and intersphinx links. Sphinx also supports gettext-based translation and full-text search. It can be installed through Python and platform package managers, Docker, or from source, then deployed to services such as Read the Docs, GitHub Pages, GitLab Pages, Netlify, or self-hosted servers. Its code is released under the two-clause BSD license, and the project is community supported.