GitBook

GitBook is a hosted platform for writing and publishing product documentation, developer guides and API references. Teams write in a block-based visual editor or in Markdown in their own repository, review edits through change requests, and publish branded docs sites with search, analytics and reader feedback.

Docs as code

• Git Sync keeps a space in two-way sync with a GitHub or GitLab repository, so engineers can edit in their editor while writers use the web editor.
• Change requests work like pull requests for docs: branch, review, comment and merge, with a history of every merged change.
• API references are generated from an OpenAPI file and stay interactive on the published site.
• Preview deployments, site redirects, reusable content blocks and custom domains on paid plans.

AI features

• GitBook Agent is an AI teammate inside the editor. It edits pages from a prompt, imports PDFs and Word files into formatted pages, plans larger changes as a change request it explains and revises, follows a team style guide and site-level instructions, and translates content.
• The agent can also review change requests, flag content that has drifted from the product, and fix broken outbound links in one change request.
• AI Assistant (the "Ask" feature) lets readers ask the published docs a question and get an answer drawn from them.
• Every published site exposes an MCP server, an llms.txt index and Markdown versions of pages, so coding assistants and other agents can read the docs directly.

Pricing

A Free plan covers individuals and includes the editor, Git Sync, API docs and the MCP server. Essential costs $65 per site per month (billed annually) and adds team collaboration, the AI Assistant, a custom domain, analytics and feedback; Ultimate costs $249 per site per month and adds the heavier AI workflows. Each editor is an extra $12 per user per month, paid plans include monthly AI credits, and Enterprise is priced on request. Page views are unlimited on every plan, and open-source projects can apply for a free Community plan.

Who it is for

Product, developer-relations and support teams that publish public docs or an internal knowledge base and want engineers and writers working on the same source.