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Sanity vs Stainless

Sanity logo

Sanity

Software

Headless CMS with real-time collaborative editing and structured content APIs

From
Free
Rated
-
Full reviewWebsite
Stainless logo

Stainless

Software

Generates client SDKs, API docs, and MCP servers from an OpenAPI spec

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Sanity free plan limited to 10,000 documents and 100GB assets; Stainless starter and Pro plan prices are not published and require contacting the company.
  • They diverge on capability: Sanity covers Content API, Stainless covers SDK generation.

Where they differ

Only the attributes on which Sanity and Stainless actually diverge.

Attributes where Sanity and Stainless differ
AttributeSanityStainless
Pricing modelsubscriptionfreemium
PlatformsWebweb, api
Founded2011Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Sanity

  • Content API
  • Collaborative editing
  • Structured content
  • Webhooks
  • Third-party services
  • GROQ query language
  • Cloud support
  • JavaScript SDK support

Only in Stainless

  • SDK generation
  • MCP server generation
  • Docs site generation
  • Webhooks and streaming support
  • Automated unit tests
  • Git integration

What people use each for

The jobs each tool is most often brought in to do.

Sanity

  • Headless CMS for structured content managementnot Stainless
  • Collaborative content editing with real-time multiplayer supportnot Stainless
  • API-driven content delivery with GROQ query languagenot Stainless

Stainless

  • Generating typed SDKs for a public APInot Sanity
  • Producing an MCP server from an existing OpenAPI specnot Sanity
  • Building an API documentation site alongside client librariesnot Sanity
  • Giving open-source APIs a free SDK generation pathnot Sanity

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Sanity

  • Free plan limited to 10,000 documents and 100GB assets
  • Free plan supports only public datasets
  • Growth plan capped at 50 seats maximum
  • Private datasets, scheduled drafts, and comments/tasks require paid plans
  • Annual billing unavailable for Growth plan; Enterprise-only

Stainless

  • Starter and Pro plan prices are not published and require contacting the company.
  • The free plan caps APIs at 25 endpoints, which excludes larger production APIs.
  • Overage charges apply per SDK/endpoint/month once limits are exceeded, which can make costs unpredictable at scale.

Pricing, plan by plan

Sanity

Free

No published plan breakdown. See the Sanity review.

Stainless

Free
  • FreeFree
    • Up to 5 generators (SDKs, docs, or MCP servers)
    • 5 seats
    • APIs with 25 or fewer endpoints
  • Starter$undefined/mo
    • Unlimited generators
    • Expanded seats
    • Private SDKs of any size
  • Pro$undefined/mo
    • Custom enterprise features and pricing
  • Enterprise$undefined/mo
    • Dedicated support
    • SOC 2 compliance reports
    • Purchase order/invoicing with negotiable terms

Which should you pick?

Choose Sanity if

  • You need content api.
  • You want to start without paying.
  • You also want collaborative editing.
Sanity review

Choose Stainless if

  • You need sdk generation.
  • You want to start without paying.
  • You work on web, api.
  • You also want mcp server generation.
Stainless review

Questions people ask

Is Sanity or Stainless better?
Neither clearly leads. Sanity starts at Free and Stainless at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Sanity or Stainless?
Sanity starts at Free and Stainless at Free.
Does Sanity or Stainless run on more platforms?
Sanity runs on Web. Stainless runs on web, api.
Can I use Sanity for free?
Both have a free tier, so you can try either at no cost before committing.
What is Sanity best used for?
Sanity is most often used for headless cms for structured content management, collaborative content editing with real-time multiplayer support, api-driven content delivery with groq query language. Of those, headless cms for structured content management and collaborative content editing with real-time multiplayer support are not what Stainless is typically brought in for.
What can Sanity do that Stainless cannot?
Sanity covers Content API, Collaborative editing, Structured content, Webhooks. Stainless covers SDK generation, MCP server generation, Docs site generation, Webhooks and streaming support.

Answered from the vendors’ own pages

Stainless: Is there a free plan, and what are its limits?

Yes. The Free plan supports up to 5 generators, 5 seats, APIs with 25 or fewer endpoints, and 100 preview builds per month, with email support.

Source
Stainless: Who owns the generated SDK code?

The generated SDK code is owned by the customer and published by Stainless under the Apache 2.0 license.

Source
Stainless: What happens if I exceed my plan's endpoint limit?

Customers exceeding their endpoint limits are billed per SDK, per endpoint, per month for the overage.

Source
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