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Head-to-head · API Design Tools

Apidog vs Smithy

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Apidog #1 in API Design Tools 9.4/10 Free plan · 14-day trial Free planFree trial✓ 1 of 6 features Visit Apidog
Smithy #8 in API Design Tools 8.1/10 Open source ✓ 2 of 6 features Visit Smithy

Apidog leads on 0 checks, Smithy on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreApidog · 9.4/10
  • Free planonly Apidog
  • Free trialonly Apidog
  • Most featuresSmithy · 2 of 6

Apidog scores higher on our rubric for api design tools: 9.4 against 8.1 out of 10; our editors rank them #1 and #8.

Apidog is the better fit for teams needing an all-in-one API design suite. Smithy is the better fit for teams using model-first, protocol-agnostic API design.

  • Apidog fits best

    Teams needing an all-in-one API design suite

  • Smithy fits best

    Teams using model-first, protocol-agnostic API design

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Apidog 9.4/10 Visit ↗ Smithy 8.1/10 Visit ↗
At a glance
Editor score 9.4 8.1
Ranking #1 in API Design Tools #8 in API Design Tools
Best for Teams needing an all-in-one API design suite Teams using model-first, protocol-agnostic API design
Pricing model Free plan + paid Free
Starting price $9/user/mo Open source
Free plan ✓ (best) Not checked yet
Free trial 14 days —
Deployment Cloud, Self-hosted, Desktop Self-hosted
Platforms Web, Windows, macOS, Linux Windows, macOS, Linux
Support Email, Docs · 24/7 Community, Docs
Integrations 11 integrations 3 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Apidog 1/6 · Smithy 2/6
OpenAPI support Not checked yet ✓ (best)
AsyncAPI support Not checked yet Not checked yet
Mock server ✓ (best) Not checked yet
Contract validation Not checked yet Not checked yet
Git synchronization Not checked yet Not checked yet
Team collaboration Not checked yet ✓ (best)
Specs
Included team seats Not checked yet Not checked yet
Our review
Pros
  • Supports HTTP, GraphQL, SOAP, gRPC, WebSocket, and SSE requests
  • Combines OpenAPI design, schema validation, testing, mocks, and documentation
  • Runs automated scenarios on schedules or in CI/CD pipelines
  • Defines services and APIs independently of wire protocol
  • Generates client, server, and reference documentation outputs
  • Converts models to OpenAPI and supports AWS integrations
Cons
  • Basic pricing starts at $9 per user monthly when billed annually
  • The Free plan is limited to four users
  • Its broad feature set may exceed the needs of narrowly focused API teams
  • Local CLI rather than a hosted API design SaaS product
  • Requires model-driven workflows and build plugins
  • Paid plans and hosted collaboration details are not provided
Our verdict

Apidog is an API development platform for developers and teams that need to design, debug, test, mock, validate, and document APIs in one workspace. It supports OpenAPI and JSON Schema design alongside requests for HTTP, GraphQL, SOAP,…

Read the review →

Smithy is an open-source interface definition language and build tool for designing services and APIs. It is aimed at teams that want to define a service model once and use that model across validation, code generation, documentation, and…

Read the review →
  1. ApidogAPI Design Tools 9.4Free plan · 14-day trial
  2. SmithyAPI Design Tools 8.1Open source

Strengths and trade-offs

  • Apidog — where it wins

    • Supports HTTP, GraphQL, SOAP, gRPC, WebSocket, and SSE requests
    • Combines OpenAPI design, schema validation, testing, mocks, and documentation
    • Runs automated scenarios on schedules or in CI/CD pipelines

    Where it doesn't

    • Basic pricing starts at $9 per user monthly when billed annually
    • The Free plan is limited to four users
    • Its broad feature set may exceed the needs of narrowly focused API teams

  • Smithy — where it wins

    • Defines services and APIs independently of wire protocol
    • Generates client, server, and reference documentation outputs
    • Converts models to OpenAPI and supports AWS integrations

    Where it doesn't

    • Local CLI rather than a hosted API design SaaS product
    • Requires model-driven workflows and build plugins
    • Paid plans and hosted collaboration details are not provided
  • Apidog9.4/10 · Free plan · 14-day trial

    An all-in-one API suite spanning design, testing, mocks, documentation, and CI/CD.

    Visit ApidogFull verdict →
  • Smithy8.1/10 · Open source

    A model-first toolkit for defining, validating, transforming, and generating APIs.

    Visit SmithyFull verdict →

More comparisons

All API design tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update