We are the Builder.io to Agility CMS migration experts

Builder.io looks impressive in demos but the reality of day-to-day usage tells a different story. The editor can be laggy, especially with more than 30 components on a page, and we have seen reports of outright crashes that lose unsaved work. The documentation is a persistent sore point. Developers on forums describe spending days trying to get basic integrations working because the docs are outdated or incomplete. For an agency setting up projects for clients, unreliable documentation means unpredictable timelines.

Pricing is another area where Builder.io catches teams off guard. The free tier exists but is quite limited, and costs ramp up quickly once you need features like roles, scheduling, or higher usage limits. We have seen complaints from freelancers and small teams about unexpected charges and slow support response times when trying to resolve billing issues. The lack of self-hosting is also a hard blocker for some clients with strict data residency requirements.

The biggest concern from our perspective is vendor lock-in. Builder.io's SDKs are deeply embedded in your frontend code, and if you ever need to migrate away, you are essentially rebuilding your page composition layer from scratch. There is also no real-time collaboration, so two editors working on the same page can overwrite each other's changes without warning.

Agility CMS is one of the few headless CMS platforms that genuinely tries to bridge the gap between developer freedom and editor autonomy. The standout feature is built-in page management, something most headless CMS tools completely ignore. Editors can create and manage pages, control the sitemap, handle SEO fields, and arrange modular components on pages without needing a developer to wire everything up. That alone saves us a ton of back-and-forth on client projects.

The Next.js integration is solid and well-maintained. The SDK handles page routing, preview mode, and image optimization out of the box, and getting a starter site running takes minutes rather than hours. The content modeling interface is intuitive enough that even non-technical clients can understand and extend models without hand-holding, which is rare in the headless space.

Support is genuinely excellent. The team is small enough that you get real humans who know the product inside out, not a ticket queue that disappears into the void. For agencies that need to move fast and hand projects off to client teams, that responsiveness matters. The API request limits are generous too, with high request allowances across all plans, so you're not constantly worrying about overage charges like you would with some competitors.

We also appreciate that Agility takes a pragmatic approach to headless. It doesn't try to be everything, but it does the core CMS job well and stays out of your way when you need to build custom functionality around it.