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APIs · head to head

Hoppscotch vs Stainless

Hoppscotch logo

Hoppscotch

APIs

Open-source API development ecosystem with web-based REST client

From
Free
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

  • Each has a real cost: Hoppscotch open-source project with no published commercial support plans or pricing; Stainless starter and Pro plan prices are not published and require contacting the company.
  • They diverge on capability: Hoppscotch covers REST Client, Stainless covers SDK generation.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Hoppscotch and Stainless actually diverge.

Attributes where Hoppscotch and Stainless differ
AttributeHoppscotchStainless
PlatformsWeb, Desktop, Self-hostedweb, api
Founded2019Unknown

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), 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 Hoppscotch

  • REST Client
  • WebSocket
  • gRPC Client
  • GitHub
  • Documentation tools
  • CI/CD
  • Web support
  • Desktop 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.

Hoppscotch

  • API Developmentnot Stainless
  • API Gatewaynot Stainless
  • API Testingnot Stainless
  • API Documentationnot Stainless
  • Microservicesnot Stainless

Stainless

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

Where each one falls short

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

Hoppscotch

  • Open-source project with no published commercial support plans or pricing
  • No official enterprise tier or SLA information disclosed

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

Hoppscotch

Free
  • Open SourceFree
    • Full REST client
    • WebSocket support
    • Community
  • Teams$8/monthly
    • Team collaboration
    • Cloud sync
    • Priority support

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 Hoppscotch if

  • You need rest client.
  • You want to start without paying.
  • You work on Web, Desktop, Self-hosted.
  • You also want websocket.
Hoppscotch 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 Hoppscotch or Stainless better?
Neither clearly leads. Hoppscotch 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, Hoppscotch or Stainless?
Hoppscotch starts at Free and Stainless at Free.
Does Hoppscotch or Stainless run on more platforms?
Hoppscotch runs on Web, Desktop, Self-hosted. Stainless runs on web, api.
Can I use Hoppscotch for free?
Both have a free tier, so you can try either at no cost before committing.
What is Hoppscotch best used for?
Hoppscotch is most often used for api development, api gateway, api testing, api documentation. Of those, api development and api gateway are not what Stainless is typically brought in for.
What can Hoppscotch do that Stainless cannot?
Hoppscotch covers REST Client, WebSocket, gRPC Client, GitHub. Stainless covers SDK generation, MCP server generation, Docs site generation, Webhooks and streaming support.

Answered from the vendors’ own pages

Hoppscotch: Is Hoppscotch free to use for API development?

Yes, Hoppscotch is a completely free, open-source API development ecosystem. There are no subscription fees, license costs, or registration requirements to access the core platform.

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
Hoppscotch: Can I deploy Hoppscotch on my own infrastructure?

As an open-source project, Hoppscotch can be self-hosted and deployed on your own infrastructure. The source code is available for customization and deployment in private environments.

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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