Strapi is the best choice when you want full control and no per-seat pricing, and you have the infrastructure capability to self-host. Contentful suits enterprises needing governance, localisation and compliance guarantees, at the highest cost. Sanity offers the strongest developer experience and a genuinely customisable editing interface, at moderate cost. Headless WordPress makes sense when your editors already know WordPress and your content is article-shaped. Below is the detailed comparison, including the total cost of ownership figures that vendor pages leave out.
Key Takeaways
- Strapi — open source, self-hosted, no per-seat fees. You trade licence cost for infrastructure and maintenance responsibility.
- Contentful — the enterprise default. Strong governance and localisation; pricing scales steeply and per-seat costs dominate at team size.
- Sanity — best developer experience of the four, with a fully customisable editing studio and real-time collaboration.
- Headless WordPress — lowest retraining cost, weakest structured-content model.
- The decision is usually made by editors, not engineers. A CMS your content team avoids has failed regardless of its API quality.
- Rendering strategy matters more than CMS choice for SEO and AI visibility. Client-side-only rendering is the mistake to avoid.
Quick Comparison
| Strapi | Contentful | Sanity | Headless WordPress | |
|---|---|---|---|---|
| Model | Open source, self-hosted (cloud option) | SaaS | SaaS | Self-hosted |
| Licence cost | Free (Community) | Free tier → enterprise | Free tier → paid | Free |
| Pricing basis | Infrastructure | Seats + spaces + API calls | Seats + usage | Hosting |
| API | REST + GraphQL | REST + GraphQL | GROQ + GraphQL | REST + WPGraphQL |
| Editor UX | Good | Excellent | Excellent, customisable | Familiar |
| Content modelling | Strong | Strong | Strongest | Post-centric, weakest |
| Localisation | Good | Best-in-class | Very good | Requires plugins |
| Real-time collaboration | No | Limited | Yes | No |
| Self-host option | Yes | No | No | Yes |
| Data residency control | Full | Region selection on higher tiers | Region selection | Full |
| Best for | Control, cost predictability | Enterprise governance | Developer velocity, custom editing | Existing WordPress teams |
Pricing structures change frequently. Treat the figures in this article as planning estimates and confirm current list pricing with each vendor before committing.
Strapi
The case for it. Strapi is open source and self-hosted, which means no per-editor licence fee. For an organisation with twenty content contributors, this is the difference between a predictable hosting bill and a five-figure annual subscription. You control the database, the deployment and the data location entirely — which resolves EU data residency questions by construction rather than by contract.
The admin panel is extensible, the plugin ecosystem is reasonable, and because it is Node.js you can drop into custom controllers and middleware when the standard API does not fit.
The case against it. Self-hosting is a real, continuing responsibility: upgrades, security patching, backups, scaling, uptime. The engineering time this consumes frequently exceeds the licence fee you avoided. Major version upgrades have historically required migration effort. Strapi Cloud exists and removes much of this, but then you are paying for a managed service and the cost advantage narrows.
Choose Strapi when you already run infrastructure competently, you have many editors, you need full data control, or you need deep backend customisation.
Realistic cost: $50–250/month hosting, plus meaningful engineering time. Budget one to three days of engineering per quarter for maintenance.
Contentful
The case for it. Contentful is the enterprise-grade option. Localisation is genuinely best-in-class — if you publish in twelve languages across nine markets, this matters more than anything else on the list. Governance features, role-based permissions, environments, release scheduling and audit trails are mature. It is a system procurement departments approve without argument.
The case against it. Cost. Pricing combines seats, spaces, API calls and records, and it scales in a way that surprises teams. Organisations that start on a mid-tier plan and grow often find themselves in an enterprise negotiation sooner than planned. The content modelling, while strong, is more rigid than Sanity’s — significant model changes on a large content set require care.
Choose Contentful when you are a large organisation with multi-market localisation, formal governance requirements, and budget that is not the binding constraint.
Realistic cost: free tier for small projects; mid-tier plans commonly $2,000–15,000 per year; enterprise agreements frequently exceed $40,000.
Sanity
The case for it. Sanity has the best developer experience of the four, and it is not close. The editing interface — Sanity Studio — is a React application you configure and extend in code, which means you can build an editing experience shaped around your actual editorial workflow rather than accepting a generic one. GROQ, its query language, is unusually expressive once learned. Real-time collaborative editing works properly. Portable Text handles rich content as structured data rather than an HTML blob, which pays off substantially when the same content feeds a website, an app and a newsletter.
The case against it. GROQ is a genuine learning curve for a team that knows GraphQL. Studio customisation is powerful but requires React competence — a non-technical team cannot reshape it alone. Usage-based pricing components need monitoring on high-traffic sites.
Choose Sanity when developer velocity matters, you need a bespoke editing experience, content is genuinely structured and multi-channel, or editors collaborate simultaneously.
Realistic cost: free tier is generous; growth plans commonly $2,000–12,000 per year for mid-sized teams.
Headless WordPress
The case for it. Your editors already know it. That sentence carries more weight than most technical arguments, because the most common cause of CMS project failure is an editorial team quietly reverting to the old system. WordPress powers a large share of the web, the plugin ecosystem is unmatched, hosting is cheap and universally available, and WPGraphQL is mature. Pairing a WordPress backend with a Next.js frontend is a well-trodden path.
The case against it. WordPress’s data model is post-centric, and that does not change when you put an API in front of it. Modelling genuinely structured content — a product with variants, regional pricing and localised specifications — means custom post types and meta fields, and it stays awkward. You inherit WordPress’s security surface and plugin update burden. Two rendering layers means two systems to maintain.
Choose headless WordPress when your team knows WordPress, your content is article-shaped, and you want a modern frontend without retraining editors. Our WordPress development team builds both traditional and headless configurations, and we will say plainly when traditional WordPress is the better answer — for a content marketing site with one channel, it frequently is.
Realistic cost: $20–200/month hosting, plus frontend hosting.
Total Cost of Ownership: A Worked Example
A mid-sized marketing site, 8 editors, 3 locales, ~500 pages, over three years:
| Strapi (self-hosted) | Contentful | Sanity | Headless WP | |
|---|---|---|---|---|
| Licence / subscription | $0 | ~$18,000–45,000 | ~$9,000–20,000 | $0 |
| Hosting (CMS) | ~$4,300 | $0 | $0 | ~$2,500 |
| Frontend hosting | ~$2,000 | ~$2,000 | ~$2,000 | ~$2,000 |
| Initial build | Baseline | Baseline −5% | Baseline −5% | Baseline +5% |
| Maintenance engineering | ~$18,000 | ~$5,000 | ~$5,000 | ~$14,000 |
| 3-year total (excl. build) | ~$24,300 | ~$25,000–52,000 | ~$16,000–27,000 | ~$18,500 |
The headline finding: Strapi’s “free” licence is largely consumed by maintenance engineering, and Sanity is frequently the lowest true total cost at mid scale. Substitute your own engineering cost per hour — if your team maintains infrastructure anyway, Strapi’s marginal cost drops sharply and it wins.
The SEO and AI Visibility Question
This is where headless projects go wrong, and it has nothing to do with which CMS you pick.
A headless CMS delivers content over an API. How you render that content determines whether search engines and AI systems can read it.
- Static generation (SSG) — pages built at deploy time into plain HTML. Fastest, fully crawlable, best for content that changes on a publishing cadence. This is what Astro, Next.js static export and similar tools do.
- Server-side rendering (SSR) — HTML generated per request. Fully crawlable, suits personalised or frequently changing content.
- Client-side rendering only — the browser fetches content via JavaScript after load. Avoid this for content you want found. Google can execute JavaScript but does so on a delayed second pass, and many AI retrieval crawlers do not execute it at all. An LLM crawler that fetches your page and receives an empty shell will never cite you.
If AI search visibility matters — and in 2026 it should — render server-side or statically. Our note on when to choose server-side rendering covers the trade-offs in detail.
Migration From Traditional WordPress
Content extraction is the easy part; the WordPress REST API exposes everything. The real work is:
- Content remodelling — turning posts and meta fields into proper content types. This is where the value is created and where the time goes.
- URL preservation — a complete redirect map from old URLs to new. Skipping this is the fastest way to lose rankings you spent years building.
- Editorial workflow rebuild — previews, drafts, scheduling, approvals. Editors notice immediately if these regress.
- Media migration — images, alt text, and ideally WebP conversion along the way.
Budget four to ten weeks for a mid-sized site. Our web development team runs these migrations regularly, and the pattern is consistent: teams that budget for remodelling succeed, and teams that treat it as a data copy do not.
How NSDBytes Chooses
We do not have a house favourite, and we distrust agencies that do. The questions we work through with clients:
- How many editors, and what will they tolerate? This decides more projects than any technical criterion.
- How many channels consume the content? One channel rarely justifies headless at all.
- Where must the data live? Strict EU residency requirements point to self-hosting.
- Who maintains it in year two? If the answer is “nobody in particular,” choose managed.
- What is the localisation requirement? Beyond about five locales, Contentful’s advantage becomes decisive.
Final Thoughts
The four systems here are all capable. The projects that fail do so because the content model was never properly designed, because editors were not consulted, or because everything was rendered client-side and the site became invisible to search and AI retrieval.
Get the content model and the rendering strategy right and any of these will serve you. If you want help choosing — or migrating — talk to our team.
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Written by the NSDBytes Team
We are passionate about software development, AI integration, and helping businesses achieve operational excellence through modern technology.
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