Best Headless CMS Compared: Sanity vs Contentful vs Strapi (2026)

Sanity is the best all-round headless CMS for most product and marketing teams: flexible content modeling, real-time collaboration and a generous free plan, with affordable per-seat pricing. Contentful is the enterprise choice when you need governance, many locales and a vendor your procurement team already trusts. Strapi is the right pick when you want open-source code, self-hosting and full control of your data.

All three deliver content over APIs to any frontend. They differ on hosting model, pricing structure and how much of the editing experience you customize in code.

Key takeaways

• Sanity Free includes up to 20 seats and 10,000 documents; Growth is $15 per seat per month with 25,000 documents (as of October 2026).
• Contentful Free includes 10 users, 10,000 records and 100,000 API calls per month with no overages; Lite jumps to $300 per month (as of October 2026). Contentful is now part of Salesforce.
• Strapi Community is MIT-licensed and free to self-host; Strapi Cloud starts at $35 per project per month (as of October 2026).
• Lock-in is mostly about your content model and queries, not the vendor. Keep schemas documented and avoid proprietary query features where portability matters.
• Many small sites do not need headless. If editors must change layouts, a visual builder may be a better fit.

Comparison table (as of October 2026)

Sanity: flexible modeling and real-time editing

Sanity stores content as structured JSON documents in its hosted Content Lake and gives you Sanity Studio, an open-source React app you configure in code. Developers define schemas in TypeScript; editors get real-time collaborative editing, live previews and visual editing.

Strengths:

• Content modeling is code-first and versioned with your repository, so schema changes go through pull requests.
• GROQ, Sanity's query language, lets you shape responses precisely, which reduces over-fetching on the frontend.
• Free plan is generous enough for real small-business sites: 20 seats and 10,000 documents.
• Per-seat pricing on Growth scales gradually instead of jumping to a large flat fee.

Watch-outs:

• GROQ is Sanity-specific. Heavy use of it increases migration effort later.
• Add-ons can be costly: an increased-quota add-on is $299 per month, extra datasets are $999 per dataset per month, and dedicated support is $799 per month (as of October 2026).
• Free plan datasets are public only. If draft content must stay private at the API level, you need Growth.

Contentful: governance and scale for larger organizations

Contentful pioneered the API-first CMS and is widely used by large brands. A banner on its site now notes that Contentful is officially part of Salesforce, which may matter if your organization already standardizes on Salesforce.

Strengths:

• Mature governance: roles, environments, scheduled publishing, workflows and, on Enterprise, SSO, SCIM, custom roles and EU data residency.
• Strong localization model for multi-market sites.
• Large partner and agency ecosystem.

Watch-outs:

• The pricing gap is wide. Free is limited to 2 locales and 100,000 API calls with no overages; Lite is $300 per month; an additional Lite Space is $850 per month (as of October 2026).
• Content types and records are capped per space (25 types and 10,000 records on the Starter Space; 50 and 50,000 on a Lite Space).
• Customizing the editor requires building apps on its App Framework, which is more effort than editing a Sanity Studio config.

Strapi: open source and self-hosted control

Strapi is a Node.js headless CMS you can run anywhere: a VPS, Docker, a PaaS or Strapi Cloud. The Community edition is MIT-licensed with no limits on entries or API calls.

Strengths:

• Full ownership: your database (Postgres, MySQL, SQLite), your servers, your region. Useful when clients require data to stay in a specific country.
• Admin panel and APIs generated from your content types; customize with plugins and code.
• Predictable costs: self-hosting is just your infrastructure bill.

Watch-outs:

• You own uptime, backups, security updates and scaling unless you pay for Strapi Cloud.
• Strapi Cloud Starter ($35/project/month) sleeps when idle; always-on runtime and backups begin on Pro at $90/project/month (as of October 2026).
• Major-version upgrades have historically needed planned migration work.

From experience: For client projects that combine Next.js frontends with Supabase or Postgres, the CMS decision usually comes down to who edits and where data must live. When editors want a polished, real-time experience, a hosted CMS saves a lot of support time. When a client needs content in its own database and region, self-hosted open source is the cleaner answer.

Content portability: plan your exit on day one

Every headless CMS lets you export content, but the effort to move depends on choices you make early.

• Rich text is the hardest part to move. Sanity stores rich text as Portable Text (structured JSON), Contentful uses its own rich-text JSON format, and Strapi offers Markdown or blocks. Each needs a converter when you migrate. Keep rich text to the fields that truly need it.
• References and localization multiply complexity. A page that references ten components in three locales becomes dozens of linked records. Draw your model before building, and avoid deep nesting.
• Assets live separately. Images and files are stored on each vendor's asset CDN. Keep original files in your own storage too, so a migration does not depend on bulk-downloading from a vendor.
• Queries tie your frontend to the vendor. Wrapping CMS calls in a small data-access layer in your frontend means a future switch changes one folder, not every page.

A simple test: ask your developer how long it would take to move 500 pages to another CMS. If nobody can answer, document the model and export process now, while it is small.

Common mistakes when adopting a headless CMS

• Modeling content as pages instead of reusable entries, so the same testimonial is copied into twenty places.
• Skipping preview, which leaves editors publishing blind and losing trust in the tool.
• Rebuilding the whole site on every edit instead of using webhooks with on-demand revalidation.
• Giving every editor admin rights because roles were never planned.

How to choose: six steps

1. List your editors and their workflow. How many people, which roles, do they need scheduled publishing or approvals?
2. Model your content. Write down content types, fields, references and locales. Compare counts against free-plan caps (types, records, locales).
3. Estimate API traffic. A statically generated site makes few API calls; a server-rendered site with no caching can make millions. Use caching or static generation to stay within quotas.
4. Decide on hosting responsibility. If no one will patch servers, choose hosted Sanity, Contentful or Strapi Cloud.
5. Check compliance and data residency. Ask where content and assets are stored and what certifications apply.
6. Price year two, not month one. Seats, locales and environments grow faster than expected.

Your CMS choice should fit the framework you build on; see Next.js vs Remix vs Astro for business sites. If your editors need visual page building more than structured content, compare Webflow vs WordPress vs Framer. For the general principle of when to adopt a product versus build your own admin, read build vs buy software decisions.

Quick picks

• Startup marketing site plus docs, small team: Sanity Free or Growth.
• Multi-brand enterprise with strict governance: Contentful Enterprise.
• Agency needing self-hosting in a client's region: Strapi Community on your infrastructure.
• Team that wants open source without running servers: Strapi Cloud.

Headless CMS selection checklist

• [ ] Content model drafted with types, fields, references and locales
• [ ] Counts checked against plan caps (documents/records, content types, locales, environments)
• [ ] API calls and bandwidth estimated with caching strategy decided
• [ ] Preview and draft workflow tested with a real editor
• [ ] Roles and permissions mapped to your team
• [ ] Data residency and compliance requirements confirmed
• [ ] Backup and export process documented and tested once
• [ ] Image and asset handling (transforms, CDN) confirmed
• [ ] Webhooks set up to trigger site rebuilds or revalidation
• [ ] Year-two cost modeled with expected seat and locale growth

Next steps

• Draft your content model on paper before creating any account.
• Spin up a free project on two of the three and have an editor publish a real page in each.
• Wire a preview to your frontend early; editors judge a CMS by its preview.
• Document your schema and export process so switching later is possible.
• If you want help designing the content architecture, see our advisory service.

Sources

• Sanity pricing: https://www.sanity.io/pricing
• Contentful pricing: https://www.contentful.com/pricing/
• Strapi self-hosted pricing: https://strapi.io/pricing-self-hosted
• Strapi Cloud pricing: https://strapi.io/pricing-cloud

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