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Stoplight vs Prism: catalog facts
Stoplight	Prism
Freemium A free plan is available to get started, with paid plans for larger teams.	Free Free and open source.
Web	Command line
Visual OpenAPI editor that needs little specialised knowledge Mock servers from the API description	Mock server generated directly from an OpenAPI file Validation proxy catches contract drift
Hosted service that requires an account Focused on teams and organisations rather than individual use	Depends on a complete, accurate specification Command-line only
Web application, Hosted service	Downloadable app
Closed source	Open source
License not stated	License not stated
Account needed	No account needed
Needs internet	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.