Contentful vs Sanity: Choosing the Right Headless CMS
Contentful and Sanity are the two most prominent headless CMS platforms for modern JAMstack and web development. Both decouple structured content management from content presentation, delivering content through content APIs that feed websites, mobile apps, and any digital channel. But their architectures, pricing models, and developer experiences differ in ways that matter.
This comparison covers the practical differences that influence which platform fits your team and project.
Architecture and Approach
Contentful
Contentful is a structured content platform built around content types, entries, and assets. You define content models in the Contentful web app, editors create content within those models, and developers fetch content via REST or GraphQL APIs.
Contentful stores your content in its cloud infrastructure and delivers it through a global CDN. The platform enforces structure through content type definitions, meaning editors cannot deviate from the schema developers define. This creates predictability and consistency at scale.
Contentful has been in the market since 2013 and has a proven enterprise track record.
Sanity
Sanity takes a different approach. Content is stored in Sanity's hosted Content Lake (a real-time document store), but the editing interface (Sanity Studio) is an open-source React application that developers deploy and customize. The editing experience is fully customizable, from field layouts to validation rules to custom input components.
Sanity uses GROQ (Graph-Relational Object Queries), a proprietary query language designed specifically for content. GROQ is powerful and expressive, though it requires learning a new syntax. GraphQL is also available.
Content Modeling
Contentful Content Modeling
Contentful defines content models through the web interface or the Content Management API. Each content type specifies fields with types (text, number, date, reference, media) and validation rules. Content models are versioned and can be migrated programmatically.
Limitations exist on content type count and field count depending on your plan. The free tier allows 48 content types with 50 fields each. Enterprise plans expand these limits. References between content types create structured relationships, making content predictable but sometimes rigid.
Sanity Content Modeling
Sanity defines schemas in JavaScript or TypeScript code within the Sanity Studio project. Schemas are version-controlled alongside the studio code, reviewed in pull requests, and deployed with the studio.
Sanity has no inherent limits on content types, fields, or nesting depth. The schema system supports arrays, objects, references, and custom types with complete flexibility. Portable text fields (Sanity's rich text format) embed structured data and custom components within text content.
For teams that want maximum content modeling flexibility and a superior developer experience, Sanity is the more permissive platform.
Content Modeling Comparison Matrix
| Modeling Feature | Contentful | Sanity |
|-----------------|:----------:|:------:|
| Content types (free tier) | 48 | Unlimited |
| Fields per content type | 50 (free), higher on paid | Unlimited |
| Nesting depth | Limited (10 levels) | Unlimited |
| Schema definition | Web UI or API | Code (JS/TS), version-controlled |
| Field validation | Built-in rules | Custom validation functions |
| Rich text | Structured rich text field | Portable Text (embeddable structured data) |
| References | Typed references between entries | Typed references with inline expansion |
| Array fields | Supported | Supported with custom object types |
| Conditional fields | Limited | Full support via custom components |
| Schema migration | CLI migration scripts | Schema changes deploy with Studio |
| Versioning | Entry-level versioning | Document-level revisions |
Sanity's Portable Text deserves special attention. Unlike Contentful's rich text which outputs a structured JSON tree of standard formatting nodes, Portable Text allows you to embed custom structured data blocks within text content. You can define a custom block type for, say, a product callout or a code example, and editors can insert it inline alongside paragraphs. This makes rich content modeling dramatically more flexible for content-heavy sites.
Editing Experience
Contentful's Editor
Contentful provides a polished web-based editing interface. Editors navigate content types, create entries, manage assets, and publish through a consistent UI that is intuitive for non-technical users.
Contentful supports localization workflows with per-field locale support, draft and published states, and scheduled publishing. The Compose feature on higher plans provides a page-level editing experience for marketing teams.
Sanity Studio
Sanity Studio is fully customizable. Developers control every aspect: field layouts, custom input components, real-time previews, and workflow stages. The studio is a React application, so anything possible in React is possible in the studio.
Real-time collaboration is a core feature. Multiple editors on the same document see each other's changes instantly, eliminating version conflicts.
The trade-off is setup time. Getting the most from Sanity requires developer investment in customization.
Developer Experience Comparison
The developer experience is where these platforms diverge most dramatically, and it often determines which platform a team selects.
Contentful DX
Contentful provides a stable, well-documented, SDK-heavy developer experience. Official SDKs exist for JavaScript, Python, Ruby, PHP, Java, .NET, Swift, and Android. The Content Delivery API is cached globally and responds in under 100ms for most queries. GraphQL support is solid. The Content Management API handles write operations with clear rate limiting documentation.
Contentful's developer workflow typically involves defining content models in the web UI, fetching content via the Delivery API, and building frontends with any framework. The Contentful CLI supports scripting, space cloning, and migration management. Content model migrations can be version-controlled and run as part of CI/CD pipelines.
The main friction point is that content model changes happen in the Contentful web UI (or via API), separate from your application code. This creates a disconnect between frontend code and content structure that requires coordination.
Sanity DX
Sanity provides a code-first developer experience where the content schema lives in your application repository. Schemas are defined in JavaScript or TypeScript, reviewed in pull requests, tested in CI, and deployed with the Studio. This means content model changes follow the same development workflow as frontend code changes.
Sanity Studio is a React application that you customize, extend, and deploy yourself. Custom input components, preview panes, validation logic, and workflow stages are all implemented as React components. For teams with strong React expertise, the customization possibilities are virtually unlimited.
GROQ (Graph-Relational Object Queries) is Sanity's query language. It is more concise than GraphQL for content queries and supports projections, filtering, ordering, and joining across document types in a single query. The learning curve is real, but developers who invest in GROQ typically find it more productive than constructing equivalent GraphQL queries.
| DX Dimension | Contentful | Sanity |
|-------------|:----------:|:------:|
| Schema definition | Web UI / API | Code (JS/TS in repo) |
| Studio customization | App Framework (limited) | Full React customization |
| Query language | REST + GraphQL | GROQ + GraphQL |
| Local development | Content preview via API | Full local Studio |
| Type safety | Generated types via CLI | Native TypeScript schemas |
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