Astro builds static HTML by default, which changes what you should want from a CMS. The content fetch runs once at build time, not on every request, so raw API latency matters far less than it does on a server-rendered stack. What matters instead is whether the SDK works cleanly inside Astro frontmatter, whether getStaticPaths can hydrate every page from a single query, and whether a rebuild gets triggered when an editor publishes.

This guide compares four headless CMS platforms on those terms. Every price below was read directly from the vendor's own pricing page on November 10, 2026, and each figure is linked to its source. Vendors whose pricing could not be read and cited on that date were left out rather than guessed at.

What Astro actually needs from a CMS

A JavaScript SDK that runs in frontmatter. Everything between the --- fences executes on the server at build time. An SDK that assumes a browser or a long-lived server process will fight you.

Lean queries.…