Headless CMS in 2025: Sanity vs Contentful vs Strapi — Honest Comparison

Choosing a headless CMS in 2025 is more confusing than ever. There are 50+ options, they all claim to be 'the most developer-friendly,' and the pricing pages require a PhD in unit economics. After shipping production sites on Sanity, Contentful, and Strapi for clients across 5 countries, here's our honest take on the three most popular options.

Sanity: the developer's choice. Sanity is built for developers who want maximum flexibility. The content schema is defined in code (TypeScript/JavaScript), not through a GUI. This means: version-controlled content models (your schema lives in your repo), custom input components (build any editing interface you want), and real-time collaborative editing (Google Docs-style for content). Pricing: Free tier handles most startups (up to 100K API requests/month). Growth plan starts at $15/user/month. Enterprise gets expensive. Best for: developer teams that want full control, complex content models, and the ability to build custom editing experiences.

Contentful: the enterprise standard. Contentful is the headless CMS that enterprise companies and large marketing teams choose. The content modeling GUI is polished, the content delivery API is fast (global CDN), and the marketplace has hundreds of integrations (translation, analytics, A/B testing). Pricing: This is where it gets painful. The free tier is limited (5 users, 2 locales). The 'Team' plan is $300/month. Enterprise pricing is custom and often $1,000–3,000+/month. Contentful is built for companies with marketing teams that edit content daily — if that's not you, you're overpaying. Best for: large teams with non-technical content editors who need a polished GUI, multi-language support, and enterprise compliance.

Strapi: the open-source option. Strapi is self-hosted and open source (MIT license). You own the data, the infrastructure, and the code. The admin panel is auto-generated from your content types — define a schema, get a full CRUD interface. Pricing: The software is free. You pay only for hosting ($5–50/month on Railway, Render, or your own server). Strapi Cloud (managed hosting) starts at $29/month. Best for: teams that want to self-host, avoid vendor lock-in, need custom backend logic (Strapi is built on Node.js/Koa), or have budget constraints that make Contentful impossible.

The honest comparison. Developer experience: Sanity > Strapi > Contentful. Sanity's GROQ query language and TypeScript-first approach is a joy. Strapi's REST/GraphQL APIs work fine but feel dated. Contentful's SDK is solid but the content modeling GUI adds friction for developers. Editor experience: Contentful > Sanity > Strapi. Contentful's interface is the most intuitive for non-technical users. Sanity Studio is powerful but requires more onboarding. Strapi's admin panel is functional but basic. Performance: Contentful ≈ Sanity > Strapi. Contentful and Sanity both use global CDNs — sub-100ms response times worldwide. Strapi's performance depends on your hosting.

The real cost over 12 months. For a startup with 3 developers and 2 content editors: Sanity: $0–180/year (free tier usually sufficient, Growth plan if needed). Strapi: $60–600/year (hosting costs only, self-managed). Contentful: $3,600/year minimum (Team plan). Strapi Cloud: $348–1,188/year. For most startups, Sanity's free tier or self-hosted Strapi are the economical choices. Contentful's pricing makes sense only when your content team is large enough to justify the premium editor experience.

What we recommend. Choose Sanity if your team is developer-heavy, you want the best DX, and you're building a Next.js application (Sanity + Next.js integration is first-class). Choose Strapi if you want to self-host, need custom backend logic, or your budget is extremely tight. Choose Contentful if you have a large non-technical content team, need enterprise features (SSO, audit logs, workflows), or you're at a company that requires vendor support contracts.

The option nobody considers: MDX files. For blogs, documentation, and marketing sites with infrequent content updates, you might not need a CMS at all. MDX files (Markdown + React components) stored in your Git repo give you: version control on content, zero API costs, instant build-time rendering, and content that lives with your code. We use this approach for client sites where the founder updates content quarterly — it's simpler, faster, and free.

The migration warning. Whichever CMS you choose, structure your code so the CMS is replaceable. Use a content fetching layer that abstracts the CMS-specific API calls. If your components directly import `@sanity/client` or `contentful` SDK calls, you're locked in. Build a thin adapter layer, and switching CMS providers becomes a weekend project instead of a month-long rewrite.