Cloudflare launched EmDash on April 1, 2026, calling it the spiritual successor to WordPress. Sanity has been around since 2017, powering content for companies like Figma and the NBA. Both platforms handle structured content, but they take radically different approaches to how you build, host, and scale.
The core difference comes down to architecture. EmDash is a full-stack CMS — it manages both the backend admin and the frontend rendering in a single Astro-based project. Sanity is headless by design: you configure a studio, store content in its cloud dataset, and connect any frontend you like. One is monolithic in a new way. The other decouples everything.
If your team has zero developers, these platforms add friction, not remove it.
Which one fits your team? That depends on whether you value portability over tight integration, or a rich ecosystem over a clean slate. Let’s break it down.
| Attribute | EmDash (Cloudflare) | Sanity (Sanity.io) |
|---|---|---|
| Architecture | Full-stack (backend + frontend in Astro) | Headless (backend only, any frontend) |
| Content modeling | Custom content types defined in the admin UI (database-driven) | Structured content defined in code (schema as code) |
| Plugin/extension model | Sandboxed plugins via V8 isolates (dynamic workers) | No plugins; extend via custom input components, GROQ queries, and APIs |
| Hosting | Runs on Cloudflare Workers (paid plan required for sandbox) or any Node.js server | Hosted dataset on Sanity CDN; frontend deployed anywhere |
| Pricing | Free tier (limited); paid plan from $5/month for sandbox; usage-based for workers, D1, R2, KV | Free tier (1M API calls/month, 3 users); paid plans from $15/user/month; dataset and asset storage billed separately |
| AI readiness | Built-in MCP server and agent skills files; CLI for AI agents | Built-in GROQ and APIs; AI integrations via third-party tools (no native MCP) |
| Content format | Portable text (structured JSON) | Portable text (originally created by Sanity) |
| License | MIT (open source) | Proprietary (closed source) |
| Migration from WordPress | Built-in WXR import; plugin for WordPress export | Third-party tools; manual mapping |
How Each Handles Structured Content
Content modeling is where these two platforms diverge most sharply.
EmDash ships with two default content types: posts and pages. You can create additional types in the admin UI under “Content Types” — for example, a “Project” type with fields like client_namecodecodecodecodecode, yearcodecodecodecodecode, urlcodecodecodecodecode, and descriptioncodecodecodecodecode. Those types are stored as rows in the database. There is no way to define them in code inside the Astro config or any configuration file. Once you create a type through the UI, it lives in the database. If you move or reset your database, you lose that definition.
Sanity handles this differently. You define a schema in JavaScript or TypeScript — for example, a projectcodecodecodecodecode document type with fields titlecodecodecodecodecode, slugcodecodecodecodecode, clientcodecodecodecodecode, yearcodecodecodecodecode, and bodycodecodecodecodecode. That schema lives in your code repository. It is deployed alongside the Sanity Studio. The dataset is always in sync with the schema version you deploy. This approach prevents drift between environments. It also means you can version-control your content model, roll back changes, and automate migrations.
If you are a developer who wants to treat content structure like infrastructure — defined in code, versioned, and deployed — Sanity gives you that out of the box. EmDash currently forces you to click through a UI to create custom types, which is a step backward for teams that need reproducibility.
Security: Sandbox vs. No Plugins
EmDash’s headline feature is its plugin sandbox. Every plugin runs inside a V8 isolate via Cloudflare’s dynamic workers. A plugin must declare its capabilities in a manifest — for example, read:contentcodecodecodecodecode and send:emailcodecodecodecodecode. It cannot access the database, the file system, or unrestricted network calls. This eliminates the attack surface behind 96% of WordPress vulnerabilities. The sandbox only works on Cloudflare’s paid plan ($5/month). If you self-host on a Node.js server, plugins run in-process with no isolation.
Sanity has no plugin system. You extend the studio by writing custom input components or using the API directly. There is no third-party code that gets installed into your content environment. This means the security model is simpler: you control exactly what custom code runs, and it runs in your frontend, not in the backend. The risk of a compromised plugin stealing your database is zero because no plugin exists to compromise.
Which model is better? If you need to install third-party functionality into the CMS itself, EmDash’s sandbox is a genuine innovation. But if you prefer to keep the CMS lean and handle custom logic in your frontend, Sanity’s approach eliminates the problem entirely.
The Ecosystem Reality
WordPress has 62,000 plugins. EmDash launched with zero third-party plugins and a review queue that Cloudflare says will rely on AI agents to generate missing functionality. A form builder in EmDash, for example, is a basic drag-and-drop interface that looks like it was built in 2002. There is no equivalent of Gravity Forms, Yoast SEO, or WooCommerce.
Sanity does not try to replicate that ecosystem. Instead, it provides a rich API and query language (GROQ) that lets you build custom functionality in your frontend. The Sanity Exchange has templates and starter kits, but you are expected to write code for anything beyond basic content management.
For a business that needs e-commerce, membership systems, or advanced form handling today, neither platform matches WordPress’s plugin library. But Sanity at least gives you a stable API and a mature query language. EmDash is betting that AI agents will write the plugins you need, which is a gamble when you are trying to run a production site.
Pricing and Cost Predictability
EmDash’s pricing is usage-based. A small blog on the free tier costs about $15/year for a domain. But if you get traffic spikes, your Cloudflare Workers bill can jump unpredictably. A DDoS attack of 10,000 IPs making one request per second each can rack up 26 million billable requests in a month. There is no built-in spending cap. You can configure CPU time limits per request and WAF rate limiting, but a distributed bot attack from thousands of IPs bypasses per-IP rate limits.
Sanity’s pricing is more predictable. The free tier includes 1 million API calls per month, 3 users, and 10 GB of asset storage. Paid plans start at $15/user/month. Additional API calls and asset storage are billed at fixed rates. There is no risk of a surprise bill from a sudden traffic surge because Sanity does not charge per request for CDN delivery — it charges per API call to the dataset, which is typically much lower than page view counts.
For a small business owner who does not want to monitor Cloudflare dashboards daily, Sanity’s predictable billing is safer. EmDash’s variable costs are better suited to teams that can set up cost alerts and rate limiting.
AI Readiness: Built-In vs. Third-Party
EmDash ships with a built-in MCP server and agent skills files. You can connect Claude, Cursor, or any MCP-compatible agent and say “create a new custom content type called ‘Podcast’ with fields for title, transcript, and guest name.” The agent reads the skills files and executes the operation. This is a first-class feature.
Sanity has no native MCP support. You can use its REST API or GROQ to build your own AI integrations. Some teams have connected Sanity to custom GPT actions or LangChain workflows, but it requires extra work. There is no out-of-the-box agent that can modify your schema or migrate content.
If your workflow depends on AI agents modifying the CMS directly, EmDash is ahead. If you prefer to keep AI interactions on the frontend side (e.g., generating content in your app and pushing it to the dataset), Sanity’s API approach is already mature.
Closing: The Edge Case No One Talks About
Both platforms assume you have a team that can write TypeScript. EmDash’s full-stack architecture means your designers need to understand Astro components and CSS. Sanity’s headless approach means you need to set up and maintain a separate frontend deployment.
But there is a scenario where neither works well: a non-technical content editor who needs to manage a site with complex layouts and no developer support. WordPress with a page builder like Elementor still wins there. EmDash’s editor is basic. Sanity Studio requires schema configuration. If your team has zero developers, these platforms add friction, not remove it.
That is the gap neither of them has solved yet. EmDash is betting on AI to fill it. Sanity is betting on developer tooling. For now, the safe choice is the one your team can actually deploy and maintain.
- What is the main difference between EmDash and Sanity?EmDash is a full-stack CMS with backend and frontend in one Astro project, while Sanity is headless, separating content storage from frontend rendering.
- Which platform is better for AI integration?EmDash has built-in MCP server support for AI agents, making it easier to automate content tasks. Sanity requires third-party tools for similar functionality.
- Can non-technical users manage content on EmDash or Sanity?Both platforms require some technical skills. EmDash's editor is basic, and Sanity Studio needs schema configuration, so WordPress with a page builder may be better for non-technical users.