Antora vs Sphinx — Publishing Pipeline Comparison

This is Antora’s strongest area. It was designed from the beginning for documentation websites consisting of:

A multi-product structure like this is a first-class concept:

Antora automatically discovers component versions from Git branches and tags and builds a version switcher. It also resolves cross-references across repositories and versions. For details, see the Antora documentation.

Sphinx was originally designed to build one documentation project. Large projects like the Python documentation demonstrate that it scales well, but versioning is not built into Sphinx itself. Typically people rely on ReadTheDocs, sphinx-multiversion, or custom CI to generate separate versions. It works, but it feels like an extension rather than the core model.

This is where the biggest practical difference exists.

AsciiDoc was originally designed for book publishing. The PDF pipeline is mature. With the Antora Assembler and PDF Extension, Antora can automatically merge a component’s pages into a single book and render it with Asciidoctor PDF. For details, see the Antora Assembler documentation.

The resulting PDFs support:

out of the box. See the Asciidoctor PDF feature list for a complete overview. This feels much closer to producing a professionally typeset manual than printing a website.

Sphinx PDF generation is possible, but there are several routes: LaTeX → PDF, HTML → print, or MyST Book pipelines. The quality is good, but customization often means learning LaTeX. If your deliverable is a polished 600-page manual, you will probably spend more time tuning the output than with Asciidoctor PDF.

This is probably the largest differentiator.

In Antora, versioning is one of its defining features. A page reference like:

is completely normal. The generated site automatically provides:

without additional tooling.

Sphinx versioning is possible, but typically implemented through sphinx-multiversion, ReadTheDocs, or CI jobs. Each version is essentially another Sphinx build. It works well, but the publishing workflow is noticeably less integrated.

Suppose you have a documentation set with multiple guides, an SDK reference, an API reference, architecture documentation, requirements, and operations manuals — all sharing common pages.

Antora was built exactly for this. It understands:

without awkward workarounds.

Sphinx can certainly reuse content (e.g., via MyST includes), but it generally lacks Antora’s higher-level concepts of components, modules, and content aggregation.

Antora’s navigation is explicit. A nav.adoc file defines the site’s structure, meaning:

Sphinx relies more on toctree, which works well but tends to become distributed across many files as projects grow, making it harder to reason about the overall site structure.

It’s not useful to frame this as "Markdown vs AsciiDoc" in general. Rather, it’s simple markup vs rich document markup. MyST extends Markdown considerably, but it still inherits many of Markdown’s design principles.

The decision usually depends on the complexity of the documents and the publishing requirements.

If I were scoring them specifically for enterprise software documentation — 500 to 5,000 pages, multiple products, multiple released versions, both HTML and PDF deliverables — my ratings would be:

Based on these criteria, Antora is the stronger choice for enterprise product documentation — unless you have a strong Python-specific reason to adopt Sphinx (for example, heavy use of autodoc, Jupyter notebooks, or scientific publishing).