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Stainless vs Hoppscotch

Stainless logo

Stainless

Software

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

From
Free
Rated
-
Full reviewWebsite
Hoppscotch logo

Hoppscotch

Software

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

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Stainless starter and Pro plan prices are not published and require contacting the company.; Hoppscotch hoppscotch's core client is MIT licensed, but hoppscotch.io/pricing (per prior and repeated fetch) renders no server-side pricing content, meaning any hosted Team/Enterprise tier pricing is not readable without a JavaScript-executing browser
  • They diverge on capability: Stainless covers SDK generation, Hoppscotch covers REST Client.

Where they differ

Only the attributes on which Stainless and Hoppscotch actually diverge.

Attributes where Stainless and Hoppscotch differ
AttributeStainlessHoppscotch
Platformsweb, apiWeb, Desktop, Self-hosted
FoundedUnknown2019

Identical on both: starting price (Free), pricing model (freemium), 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 Stainless

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

Only in Hoppscotch

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

What people use each for

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

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

Hoppscotch

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

Where each one falls short

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

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.

Hoppscotch

  • Hoppscotch's core client is MIT licensed, but hoppscotch.io/pricing (per prior and repeated fetch) renders no server-side pricing content, meaning any hosted Team/Enterprise tier pricing is not readable without a JavaScript-executing browser

Pricing, plan by plan

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

Hoppscotch

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

Which should you pick?

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

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

Questions people ask

Is Stainless or Hoppscotch better?
Neither clearly leads. Stainless starts at Free and Hoppscotch at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Stainless or Hoppscotch?
Stainless starts at Free and Hoppscotch at Free.
Does Stainless or Hoppscotch run on more platforms?
Stainless runs on web, api. Hoppscotch runs on Web, Desktop, Self-hosted.
Can I use Stainless for free?
Both have a free tier, so you can try either at no cost before committing.
What is Stainless best used for?
Stainless is most often used for generating typed sdks for a public api, producing an mcp server from an existing openapi spec, building an api documentation site alongside client libraries, giving open-source apis a free sdk generation path. Of those, generating typed sdks for a public api and producing an mcp server from an existing openapi spec are not what Hoppscotch is typically brought in for.
What can Stainless do that Hoppscotch cannot?
Stainless covers SDK generation, MCP server generation, Docs site generation, Webhooks and streaming support. Hoppscotch covers REST Client, WebSocket, gRPC Client, GitHub.

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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