What is Sanity CMS? A practical guide to the content operations platform for the AI era

Sanity began as a headless CMS and has grown into what the company now calls a content operations platform. Brands like PUMA, Morning Brew, and Burger King’s parent company use it to run content across websites, apps, in-store screens, and more.

That range is exactly why the platform is hard to pin down at first glance, and why choosing it is a bigger decision than swapping one CMS for another.

What is Sanity CMS?

Sanity is a content operating system that stores your content as structured data in a hosted database called the Content Lake, then delivers it to any website, app or screen through APIs. 

Rather than shipping you a finished editor and a finished website, it gives your developers a fully customisable editing app called Sanity Studio and leaves the front end for your team to build.

That second half is what people mean when they say headless. Sanity holds and serves the content. A separate front end, usually built in a framework like Next.js or Astro, turns that content into the pages people see. 

That split is what separates a headless system from an all-in-one website builder like Webflow. If that distinction is new to you, we have written about how CMS categories differ.

Sanity is not a small bet either. The company raised an $85 million Series C led by Bullhound Capital, passed $40 million in annual recurring revenue in 2024, and supported more than 30,000 organisations at the time of that round, according to CMSWire. Puma, Nordstrom, Expedia, Skims and AT&T all run on it.

So the platform is serious, well-funded, and used at an enterprise scale. What most teams need to work out is whether the way it works suits how they actually operate.

What is the difference between a Content operating system and a traditional CMS

The content operating system label means Sanity does what a CMS does, plus more. So how does it differ exactly?

A traditional CMS stores pages, but Sanity stores content as data and sends it anywhere. In practice, that changes five everyday jobs for a content team:

1. Reusability: A product description, a bio, or a legal disclaimer is modeled once and delivered everywhere it appears. When legal changes the disclaimer, you edit one document and every page, app screen, and PDF that uses it updates. Nobody hunts through forty pages looking for stale copies.
2. Workflow flexibility: Because the editing environment is built in code, your editorial workflow follows your actual process. Review steps, approval gates, and role-specific views are configured around how your team already works, instead of the tool dictating the process.
3. Cross-team coordination: Marketing, product, and support can work in the same Content Lake without overwriting each other. Everyone draws from one source of truth instead of maintaining three copies of the same messaging.
4. Omnichannel delivery: The same structured content powers your website, your app, and whatever surface arrives next. Restaurant Brands International, the Sanity customer behind Burger King, is the clearest picture of what this makes possible: when product content like the Whopper’s ingredients and imagery lives in one record, the website, in-restaurant kiosks, the mobile app, and delivery platforms can all pull from it.
5. AI readiness: An AI tool reading a page of HTML cannot tell a product claim from a legal disclaimer, because the formatting carries no meaning. Structured content keeps those distinctions intact, and that matters in both directions. It sets the ceiling on how reliably AI can generate, translate, and update your content at scale, and it shapes how accurately answer engines represent you when they pull from your pages. It is also where Sanity has built most recently, with Content Agent, an Agent API, and an MCP server that let AI agents read and write content directly.

How Sanity works and what makes it different

Sanity has four moving parts: 

1. Your content sits in a database called the Content Lake. 
2. Your team edits it in an app called Sanity Studio. 
3. Developers pull it out with a query language called GROQ. 
4. And your text is stored in a format called Portable Text, which lets the same paragraph work on a website, in an app, or anywhere else.

Learn more about each below.

The Content Lake

The Content Lake is the hosted database where your content lives, and it holds structured data rather than pages. A product description ends up as a set of labelled fields instead of a blob of formatted text trapped inside a page template.

The practical effect is reusability. Model that product description once and the website, the mobile app and a partner feed can all pull the same content, with an editor changing it in one place instead of three.

There is a hard limit worth knowing early. The Content Lake is managed software running on Sanity's infrastructure. There is no on-premises option and no way to choose which region your data sits in.

Sanity Studio

Sanity Studio is the app your team actually opens every day. It is open source under the MIT licence and built in React, which means your developers shape it around how your team really works rather than accepting whatever the vendor happened to ship.

In practice, that looks like SEO previews sitting inside the editor, an approvals dashboard built for your workflow, or a live preview of the page updating as someone types.

Most content platforms hand you their editor and let you rearrange a few fields around the edges. Sanity hands you the materials and expects you to build one, making it a lot more flexible and customizable from the get-go.

GROQ and the APIs

GROQ is Sanity's own query language. It lets a developer request the exact content a page needs in a single request, rather than making multiple calls and discarding most of what comes back.

You will never write GROQ yourself, so the reason it matters is indirect. Tighter queries mean lighter pages and fewer developer detours whenever a piece of content is used in a new way.

If your team already works in GraphQL, Sanity supports that too, so nobody has to learn a new language just to get started.

Portable Text

Portable Text is how Sanity stores rich text. Instead of saving a paragraph as HTML, it saves it as structured data, so the same paragraph can render on a website, in a mobile app, or in an AI pipeline without anyone rewriting it.

Compare that to a WordPress content field, which is essentially a blob of HTML. A machine reading that blob cannot tell which sentence is a legal disclaimer and which is a product claim, because the formatting carries no meaning.

Portable Text is the piece that makes the content-as-data idea feel true rather than aspirational, and it is a large part of why structured content keeps coming up in conversations about content AI answer engines can actually cite.

Sanity features that matter to a content team

Architecture is what your developers will evaluate. Your marketing and editorial team worry about day-to-day usability, ownership, and collaboration, so these are the six features that will make a difference for them.

• Real-time collaboration works the way Google Docs works. People can see each other's presence, edit the same document simultaneously, and every change is tracked. Anyone who has waited for a colleague to release a locked page in a legacy CMS will understand why that matters.
• Content releases let you group related changes and publish them together, so a campaign goes live in one move instead of twelve. That removes the most common cause of a half-launched microsite.
• The media library keeps assets in one place and lets teams reuse them across projects rather than re-uploading the same hero image for the fourth time.
• Localisation is unusually generous. Every plan, including the free one, allows unlimited content types and locales, and translation lives inside the content model rather than in a duplicated set of sites. Contentful's free tier caps you at two locales, which is a real difference if you run several markets.
• Visual editing lets an editor click an element on the live front end and land in the right field in the Studio. That one is worth calling out, because losing the visual connection to the page is the loudest complaint marketers have about going headless.
• Content Agent is Sanity's AI layer for generating and restructuring content inside the Studio, and it is included from the free plan with 1,000 AI credits a month.

What are Sanity’s main pros and cons

Sanity is a strong platform, but it is not for every team. Here is what it does well and where it struggles.

‍

What teams actually build with Sanity

In practice, Sanity fits three kinds of team especially well, with the strongest case being for online retail. 

A retailer writes a product description once. That same description then feeds the website, the mobile app, marketplace listings and the screens in the shop. Change the price in one place, and it changes everywhere.

Sanity's customer stories show what this looks like at scale:

1. PUMA keeps 50,000 reusable pieces of content and pulls in 12,000 product categories every hour. 
2. MR MARVIS grew its average order value by 9.7% after switching to shoppable images.

Small media teams are the second good fit. When you publish a lot with very few people, structured content does the work an extra hire would do. You reuse what you already have and automate the repetitive parts. For example, Morning Brew runs a media business worth over $50 million with six engineers.

The third fit covers most B2B companies. One set of content sits behind the main site, the local market sites, campaign pages, the intranet, the help centre and the screens inside your product. Write a new legal line once, and it updates in all of them. Nobody has to copy and paste it into forty pages.

If two or three of these sound like your problem, Sanity is worth a look.

How much does Sanity cost?

Sanity publishes three tiers on its pricing page, and the entry points look friendly.

Price is only half the story, as a few additional factors determine what you actually pay.

Seats can add up fast because a per-seat model punishes wide, shallow access. The Growth plan then charges pay-as-you-go for API requests, bandwidth and assets once you pass the included limits. Add-ons are charged separately: 

• $799 a month for dedicated support
• $299 for an increased quota
• $999 for each extra dataset

AI credits stop at 1,000 a month and then cost five cents each, which is nothing for the odd edit and real money if AI runs through your workflow.

The biggest number is the one most guides skip. Initial implementation costs can add up, because developers have to design the content model and build the front end first. But after that, the editorial team can mostly work independently.

Sanity vs Contentful vs Webflow CMS: How do they compare?

These three CMSs turn up on the same shortlists more often than any other combination, and each one wins a different job.

Sanity wins on modelling freedom and on everything that happens beyond the website. If your content has to serve an app, a catalogue, a kiosk and a help centre, nothing else here comes close. What it asks in return is a developer and a content modelling exercise before anyone publishes anything.

Contentful is the closest direct competitor and the more managed of the two. The editor is less customisable, the guardrails are firmer, and the jump out of the free tier is steep, since Contentful Lite starts at $300 a month for 20 users. That suits an enterprise that prioritizes governance over a blank canvas. If that is the axis you care about, we have written a more detailed guide comparing Contentful and Webflow.

Webflow CMS wins when the website is the channel. Design and content live in the same tool, marketers ship without filing engineering tickets, and the Webflow Premium site plan costs $25 a month billed annually with the CMS included. If you have not used it, here is what Webflow is in more detail. It loses the moment your content has to leave the website and live somewhere else.

None of those is the right answer for everyone. Count your channels honestly, and the answer tends to pick itself.

Is Sanity the right CMS for your team?

The quiz below asks six questions about your channels, your team and your budget. At the end it tells you whether Sanity is a strong fit, worth a look, or the wrong choice for you.

‍

Frequently asked questions about Sanity