GitBook vs Sphinx (2026): which should you pick?
As of Nov 12, 2026, Sphinx grades higher than GitBook: 2.6 against 2.4 out of 4.0.
Checked Oct 9, 2026 and Nov 12, 2026 · graded Oct 10, 2026 and Nov 12, 2026 by ToolGPA
GitBook grades higher on features, ease of use and platforms. Sphinx grades higher on value for money and the free plan.
Price, platforms and features side by side. The table says where each price was read and when.
GitBook
Documentation platform for product and API docs, synced with Git
Which one is for you
Pick GitBook if
- Fits if you publish product or API docs and want changes reviewed and merged like code
- Works for a solo writer, since one user gets unlimited basic sites for free
Look elsewhere if
- Pricey if your team is big, as every user is $12 a month on top of $65 a site, read-only members too
- Skip it if you need docs behind a login on a small budget, because that starts at $249 a site
- Tight if you lean on the AI answers, since Essential's 2,000 credits cover about 100 a month and packs start at $47.50
- Tight if you're staying free: one user, no custom domain, no AI Assistant, no live co-editing, and the Agent at 10 messages a week
- Not for you if you need SAML SSO without an Enterprise contract, or a desktop or phone app
Pick Sphinx if
- Fits if you document a Python project and want API docs pulled from code
- Works for teams that want PDF and web output from one source
Look elsewhere if
- Not for you if your writers are non-technical, as there is no hosted editor
- Skip it if you want hosting, since it builds static files and you publish them
- Watch out: reStructuredText is its own markup, with Markdown through MyST
- Too light for a team wiki, as it has no accounts, comments or page editing in a browser
How we grade them
| 2.4GPAGitBookFair | 2.6GPASphinxGood | |
|---|---|---|
| Value for money | DEssential is $65 a site a month on yearly billing plus $12 for every user, read-only members included, against a category middle of $15. The parts plenty of docs teams need — docs behind a login, AI Assistant Chat, site sections — start at Ultimate, $249 a site, and extra AI credits are $47.50 for 5,000. | AFree under a BSD-2-Clause license, a program anyone can download and run, installed from PyPI, Conda, an OS package manager or Docker. That is well under 60% of the category's cheapest quarter. |
| Free plan and trial | BOne user gets unlimited basic sites with unlimited traffic, the visual editor, GitHub or GitLab sync, API playgrounds and preview deployments, free for good. One user is the wall, with no custom domain, no AI Assistant and the Agent stopped at 10 messages a week. | ANo plan and no caps. The only cost is wherever you publish the built docs. |
| Features | BA block editor with change requests and content reviews, two-way Git Sync on every plan including the free one, hosted sites with unlimited traffic, API playgrounds built from OpenAPI files, an AI Assistant answering readers in the search box, and llms.txt and an MCP server per site. The job's covered. | CreStructuredText and MyST Markdown, cross-references, several output formats, API docs from code, themes and translations. It does that job fully, but it is a smaller one: no hosted editor, and publishing is left to you. |
| Ease of use | CNo store rating on record. It's hosted, so there's no server to look after, and you can write in the visual editor or stay in Git, but there's a repo to sync and a site and domain to set up, and working out the bill — sites, users and AI credits all counted separately — is a job in itself. | DA command-line build tool with config files and its own markup, so it needs a developer. |
| Platforms and integrations | BA web app, with no desktop or phone apps listed. It connects to GitHub, GitLab, Slack, Linear, Okta and Auth0, with Claude and ChatGPT alongside, and every site publishes its own MCP server. | CA program for Mac, Windows and Linux. Windows install is documented through Chocolatey and macOS through Homebrew or MacPorts, and no web service or apps are listed. |
| Best for | product and API docs that live alongside your code | Python-style documentation built from source files |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: GitBook and Sphinx. How we grade
Price against what you get
GitBook starts at $65 a month and scores 2.7 out of 4 on features, ease of use and platforms. Sphinx has no paid plan and scores 1.7.
GitBook scores higher, and starts $65 a month higher: the question is whether the extra is worth that to you. Of the other docs and wiki tools on the chart, 11 score higher than GitBook for less, and none scores higher than Sphinx for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Sphinx is open source, according to its own site.
- GitBook also covers AI search and AI agents.
At a glance
| GitBook | Sphinx | |
|---|---|---|
| Pricing | Free plan | Free |
| Starts at | $65 per site / month, billed annually, plus $12 per user / month | Free |
| Free plan | Free plan for one user: unlimited basic sites with unlimited traffic, the visual editor, GitHub or GitLab sync, API playgrounds and preview deployments. No custom domain or AI Assistant, and GitBook Agent is capped at 10 messages a week. | Free: released under a BSD-2-Clause license. |
| Free trial | 14-day free trial with every feature unlocked; starts on inviting a collaborator, publishing a site or enabling a paid feature | None listed |
| Web | ||
| macOS | ||
| Windows | ||
| Linux | ||
| Made by | GitBook Inc. | The Sphinx developers |
| Price read from | gitbook.com | github.com |
| Checked | Oct 9, 2026 | Nov 12, 2026 |
Worth knowing
GitBook
- Paid plans combine a per-site fee with $12 per user / month, and guests and read-only members cost the same as other members.
- AI answers and translations use credits: Essential includes 2,000 a month and Ultimate 10,000, at 20 per relevant answer. Extra packs start at $47.50 a month for 5,000.
- The Free plan covers a single user and leaves out custom domains, the AI Assistant and real-time collaboration.
- SAML SSO is limited to Enterprise; AI Assistant Chat, adaptive content and authenticated access need Ultimate at $249 per site / month.
Sphinx
- It is a command-line build tool with no hosted editor, so non-technical writers need another workflow.
- It builds static files; publishing them somewhere is left to the user.
- Windows installation is documented through Chocolatey, and macOS through Homebrew or MacPorts.
Key features
GitBook
- Block-based editor
- A visual editor built from blocks, including custom ones. Added users collaborate through change requests and content reviews before edits are published.
- Git Sync
- Two-way sync with GitHub or GitLab lets a team branch, review and merge documentation like a pull request. It is included on every plan, the Free one too.
- Published docs sites
- Sites get unlimited traffic and preview deployments on every plan. Custom domains, branding and redirects start on Essential; sections and site groups need Ultimate.
- AI Assistant, paid for in credits
- On Essential, AI Assistant Ask gives readers short answers in the search box. Ultimate adds Assistant Chat, a sidebar that can draw on connected sources. Each relevant answer uses 20 AI credits.
- GitBook Agent
- Writes, edits and updates documentation and flags content that no longer matches the product. Free accounts are limited to 10 messages a week.
- API docs and LLM-ready output
- OpenAPI specifications become interactive API playgrounds. Every site also gets llms.txt files, Markdown versions of pages and its own MCP server.
Sphinx
- reStructuredText and MyST Markdown
- Source files can be written in either syntax, with tables, code blocks and mathematical notation.
- Cross-referencing
- Links work between sections, figures, tables, citations, glossary terms and code objects, including across projects.
- Several output formats
- HTML, LaTeX for PDF, ePub and Texinfo are built from the same source.
- API docs from code
- Autodoc builds reference pages for Python, C++ and other domains from docstrings.
- Themes and extensions
- Built-in and third-party HTML themes, plus extension points for diagrams, doctests and custom builders.
- Translations
- Supports documentation in multiple languages.
Plans
GitBook
Free$0
For individuals: 1 user, block-based editor, GitHub or GitLab sync, interactive API playgrounds, preview deployments and LLM optimizations.
Essential$65
per site / month, billed annually, plus $12 per user / month
Team collaboration, a custom domain, advanced branding, analytics, user feedback, redirects and 2,000 AI credits a month for AI Assistant Ask. $79 a site billed monthly.
Ultimate$249
per site / month, billed annually, plus $12 per user / month
10,000 AI credits a month, AI Assistant Chat, AI insights, adaptive content, authenticated access, site sections and channels for Slack, Linear and GitHub. $299 billed monthly.
EnterpriseCustom
SAML SSO, migration service, custom integrations, dedicated support, custom contracts and invoicing, and Git Sync IP allowlisting.
Sphinx
Open source$0
Install it yourself from PyPI, Conda, an OS package manager or Docker. Hosting the built docs is up to you.
Ways to pay less
GitBook
- Annual discount
2 months free with annual billing
Billed annually, Essential is $65 and Ultimate $249 a site a month, against $79 and $299 billed monthly; users are $12 against $15. Annual plans are paid up front and not refunded mid-term.
- Nonprofit
Free Community plan for non-profits
Eligible non-profit organizations can apply for the free Community plan, which includes all Ultimate plan features except SAML SSO.
- Education
Free Community plan for education groups
Education-related groups such as student, lab or course groups can apply for the Community plan. Schools, colleges and universities themselves are excluded.
- Other savings
Free Community plan for open source
Open source organizations that need to collaborate beyond the Free plan can apply for the Community plan at no cost, with all Ultimate features except SAML SSO.
Sphinx
No public discounts listed.
Common questions
Which is cheaper, GitBook or Sphinx?
As of Nov 12, 2026, Sphinx is cheaper to start with: it is free, against $65 a month for GitBook. GitBook starts at $65 per site / month, billed annually, plus $12 per user / month, and Sphinx is free.
Which has a free plan, GitBook or Sphinx?
As of Nov 12, 2026, both GitBook and Sphinx have a free plan.
Which platforms do GitBook and Sphinx run on?
As of Nov 12, 2026, only GitBook lists a web app and only Sphinx lists macOS, Windows and Linux apps. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.