Case Study
View Case StudyTray.ai
Migrating hundreds of thousands of pages, re-platforming and extending for the leading composable AI integration platform
From Builder.io to Prismic
We are the Builder.io to Prismic migration experts
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Challenges with Builder.io
Key pain points
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 Developers on forums describe spending days trying to get basic integrations working because the docs are outdated or incomplete.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.
Editor performance and stability
The visual editor becomes laggy with complex pages and has been reported to crash, losing unsaved work. Teams with content-heavy pages will feel this friction daily.
Outdated and incomplete documentation
Developers consistently report that the docs are confusing, outdated, or missing critical steps. Getting started takes far longer than it should for a tool that sells itself on speed.
Vendor lock-in risk
Builder.io's SDKs are tightly coupled to your frontend. Migrating away means rebuilding your entire page building and composition layer from scratch.
Limited collaboration tools
Builder.io now offers branching and peer review workflows in its Fusion product, but true real-time co-editing is still missing. Editors working outside of the Projects workflow can still overwrite each other's changes.
Pricing escalation
Costs ramp up quickly beyond the free tier, and teams report unexpected charges. Basic features like roles and scheduling sit behind higher-priced plans.
Slow and unresponsive support
Multiple users report delayed support responses, unresolved tickets, and difficulty getting refunds or cancellations processed in a reasonable timeframe.
Benefits of Prismic
Key advantages
Prismic is phenomenal for simplistic page-builder-style websites. Its simplistic drag-and-drop page builder, along with the newer code-based version, helps you generate like-for-like components and automates the developers' process.
The built-in media optimisation tool is also great, so you can ensure that even if you're uploading 4mb images, they're going to be scaled down with minimal compression artefacts.
Content scheduling capabilities
Prismic makes it ridiculously easy to plan content ahead with built-in scheduling without any plugins or workarounds. Just pick a time, hit schedule, and your release goes live exactly when you want it.
Intuitive visual editor
The editor feels natural even for non-technical teams, with clean previews and simple fields. It keeps the writing flow distraction-free while still giving developers structure.
Efficient slices feature
Slices let you build repeatable, flexible components that marketers can rearrange without breaking layouts. It’s the closest thing to structured Lego-blocks for content teams.
Rich media embedding
Embedding images, videos, and rich assets takes seconds. You don't need to hack templates. Just paste, pick, and publish.
Flexible component reuse
Developers create once, marketing teams reuse forever. Slices and custom types make content scalable without adding complexity.
Seamless publishing experience
Publishing is fast, predictable, and drama-free. If you want to do a small tweak or a full-page release, everything ships smoothly with minimal cognitive load.
Common questions
Builder.io to Prismic migration FAQs
Answers to the most common questions about Builder.io to Prismic migration
Can you migrate from Builder.io without losing your page designs?
Yes, but it takes work. Builder.io's visual editor stores page compositions as JSON that references your registered components. Those component registrations are tightly coupled to Builder's SDK, so you can't just export and import elsewhere. What you can preserve is the design itself. We extract the page structures, map them to equivalent components in the new system, and rebuild the composition layer. The visual output stays the same. Typical timeline is 6-10 weeks depending on how many page types and custom components are involved. The biggest time sink is usually recreating A/B test variants and personalisation rules that lived inside Builder's platform.
What does Builder.io actually cost?
Builder.io's free tier gives you 1 user and basic features, which is enough to evaluate but not to run a real project. The Growth plan starts at $49/month and includes more seats and content types. Beyond that, pricing gets opaque. Teams needing roles, scheduling, and higher API limits are pushed toward custom Enterprise plans that typically start in the $500-$1,000/month range. We've heard from freelancers and small agencies who were caught off guard by charges after exceeding limits on the Growth plan. Builder.io also charges per "impression" on higher tiers, which means your costs scale with traffic in ways that aren't always predictable.
How does Builder.io compare to a traditional headless CMS?
Builder.io is a visual page builder first and a CMS second. That distinction matters. If your primary goal is letting marketing teams build landing pages without developer involvement, Builder.io does that well. If you need structured content modelling, editorial workflows, multi-language support, or content that powers more than just web pages, a traditional headless CMS is a better fit. Builder.io's SDK embeds deeply into your frontend code, which creates vendor lock-in that most headless CMS platforms avoid. We typically recommend Builder.io only when the use case is narrow: high-volume landing page creation for marketing teams. For everything else, a headless CMS with a proper content model gives you more flexibility long-term.
What's the main risk of building on Builder.io?
Vendor lock-in. Builder.io's SDKs are woven into your component rendering layer, which means migrating away requires rebuilding how your pages are composed and rendered. That's not a content migration, it's an architecture migration. With a typical headless CMS, your content is accessible through standard APIs and your frontend is independent. With Builder.io, the two are intertwined. We've worked with teams who spent months extracting themselves from Builder.io because every page template needed to be recreated outside the platform. If you're evaluating Builder.io, go in with eyes open about the exit cost.
How much does Prismic cost?
Prismic has a free plan for 1 user with limited API calls. The Starter plan is $7/month per user for small teams. The Small plan is $150/month for up to 25 users with more locales and API bandwidth. Medium is $500/month. Large and Enterprise plans go higher. The pricing jumps are significant once you need multiple locales or repositories. We've had clients hit the ceiling on the Small plan faster than expected because of how Prismic counts API calls and custom types.
What are the best Prismic alternatives?
Sanity is the alternative we recommend most. It gives you better content modelling, real-time collaboration, and a query language (GROQ) that's far more flexible than Prismic's API. Contentful is another option with a bigger ecosystem, though pricing is steeper. If you liked Prismic's Slices concept, Sanity's block-based content approach works similarly but with more depth. We've migrated multiple former Prismic agency partners to Sanity, and the developer experience improvement is always the first thing they mention.
Can I migrate from Prismic to another CMS?
Yes. We've migrated quite a few Prismic projects, mostly to Sanity. We export your custom types, documents, and media through Prismic's API, then restructure everything for the target platform. Prismic's Slice-based content maps well to Sanity's portable text and block system. Typical migrations take 3-5 weeks. We keep your existing Prismic site live throughout, so there's no downtime. The biggest challenge is usually handling Prismic's media library, since images need to be moved to a new CDN.
Is Prismic a good CMS for developers?
It's decent for simple projects. The Slice Machine tooling is clever and the TypeScript support has improved. But Prismic's API has limitations that frustrate developers on bigger projects. You can't do complex queries, filtering is basic, and the content modelling is shallow compared to Sanity or Contentful. The bigger issue is Prismic's track record of breaking API changes and infrastructure shifts that have caused production outages. Developers who need reliability and deep customization are better served elsewhere.
Why are teams leaving Prismic?
The main reasons we hear are API instability, limited content modelling depth, and pricing that doesn't match the feature set. Prismic has a history of making breaking changes to their API and infrastructure without adequate migration paths. One major version change left agencies (including us, when we were partners) with broken client sites and expensive rebuild bills. Teams also outgrow the content modelling quickly. Once you need complex relationships between content types, Prismic's flat structure becomes a bottleneck.
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