Softwr

APIs · head to head

3scale vs Stainless

3scale logo

3scale

APIs

API management platform for designing, securing, and monetizing APIs

From
$300/monthly
Rated
-
Full reviewWebsite
Stainless logo

Stainless

APIs

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

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Stainless has a free tier, so it costs nothing to try first.
  • Each has a real cost: 3scale red Hat's managed 3scale services end on 30 June 2027, so anyone adopting the hosted option now is choosing a product with a published end date; Stainless starter and Pro plan prices are not published and require contacting the company.
  • They diverge on capability: 3scale covers API Gateway, Stainless covers SDK generation.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which 3scale and Stainless actually diverge.

Attributes where 3scale and Stainless differ
Attribute3scaleStainless
Starting price$300/monthlyFree
Pricing modelsubscriptionfreemium
Free tierNoYes
PlatformsCloud, On-premises, Hybridweb, api
Founded1993Unknown

Identical on both: user rating (Not yet rated), category (APIs).

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 3scale

  • API Gateway
  • Developer Portal
  • API Monetization
  • Red Hat OpenShift
  • AWS
  • Azure
  • Kubernetes
  • Cloud 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.

3scale

  • API gateway and lifecycle managementnot Stainless
  • Rate limiting and traffic control across API consumersnot Stainless
  • Developer portal and access key managementnot Stainless
  • Monetising APIs with usage-based plansnot Stainless
  • Hybrid deployment across on-premises and cloudnot Stainless

Stainless

  • Generating typed SDKs for a public APInot 3scale
  • Producing an MCP server from an existing OpenAPI specnot 3scale
  • Building an API documentation site alongside client librariesnot 3scale
  • Giving open-source APIs a free SDK generation pathnot 3scale

Where each one falls short

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

3scale

  • Red Hat's managed 3scale services end on 30 June 2027, so anyone adopting the hosted option now is choosing a product with a published end date
  • Sold as part of Red Hat middleware rather than standalone, and 3scale.net redirects into redhat.com
  • Pricing is not published and a subscription is required for some services

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

3scale

$300/monthly
  • Starter$300/monthly
    • API gateway
    • Developer portal
    • Basic analytics
  • Professional$750/monthly
    • Advanced features
    • API monetization
    • Enhanced support
  • Enterprise$undefined/monthly
    • Custom deployment
    • Dedicated support
    • Premium SLA

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 3scale if

  • You need api gateway.
  • You work on Cloud, On-premises, Hybrid.
  • You also want developer portal.
3scale 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 3scale or Stainless better?
Neither clearly leads. 3scale starts at $300/monthly and Stainless at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, 3scale or Stainless?
Stainless has a free tier; the other does not. Paid plans start at $300/monthly for 3scale and Free for Stainless.
Does 3scale or Stainless run on more platforms?
3scale runs on Cloud, On-premises, Hybrid. Stainless runs on web, api.
Can I use Stainless for free?
Yes. Stainless has a free tier, so you can try it without paying. 3scale starts at $300/monthly.
What is 3scale best used for?
3scale is most often used for api gateway and lifecycle management, rate limiting and traffic control across api consumers, developer portal and access key management, monetising apis with usage-based plans. Of those, api gateway and lifecycle management and rate limiting and traffic control across api consumers are not what Stainless is typically brought in for.
What can 3scale do that Stainless cannot?
3scale covers API Gateway, Developer Portal, API Monetization, Red Hat OpenShift. Stainless covers SDK generation, MCP server generation, Docs site generation, Webhooks and streaming support.

Answered from the vendors’ own pages

3scale: Does Red Hat 3scale require a subscription?

Yes. The page states a subscription may be required for some services, though specific subscription details and costs are not published on this page.

Source
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
3scale: Is a trial available for 3scale?

A 'Start a trial' link is mentioned in navigation, but trial duration, included features, and limitations are not specified on this page.

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
3scale: When will Red Hat 3scale end support?

Red Hat 3scale API Management maintenance and managed services will end on June 30, 2027. Customers should plan migrations accordingly.

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
Share

Related pages

More on 3scale

More on Stainless

Keep looking

Other head to heads