Pact and Schemathesis: documented facts side by side

Both tools document contract tests. 5 of 9 fields differ. The comparison lists facts from each tool's own pages and does not rate either tool.

verified 2026-10-21 · Catalogue maintained by the publisher (to be confirmed)

Field by field

FieldPactSchemathesisStatus
Licenceopen-sourceopen-sourcesame
Hostingself-hostedself-hostedsame
Test classes documentedContract testsContract tests, Security testsdiffers
Test languagesC#, Go, Java, JavaScript, PHP, Python, Ruby, Rust, SwiftPythondiffers
CI integrations named in docsnot publishedGitHub Actions, GitLab CIdiffers
Platformsapi, backendapidiffers
Published pricenot publishednot publishedsame
First releasenot publishednot publishedsame
Vendor or maintainerPact FoundationSchemathesis.io s.r.o.differs

Pact facts with sources · Schemathesis facts with sources

Only on this page

Curated angle for this pair: test class scope.

The field with the largest difference is test languages: Pact lists C#, Go, Java, JavaScript, PHP, Python, Ruby, Rust, Swift; Schemathesis lists Python.

Questions

What is the difference between Pact and Schemathesis?

The field with the largest difference is test languages: Pact lists C#, Go, Java, JavaScript, PHP, Python, Ruby, Rust, Swift; Schemathesis lists Python.

What is Pact, and what is Schemathesis?

Pact: open-source, documents contract. Schemathesis: open-source, documents contract, security.

Which test classes do Pact and Schemathesis each document?

Pact: contract tests. Schemathesis: contract tests, security tests.

Are Pact and Schemathesis free?

Pact: open-source; price not published. Schemathesis: open-source; price not published.

Are Pact and Schemathesis open source or commercial?

Pact: open-source. Schemathesis: open-source.

What are the key differences between Pact and Schemathesis in hosting and CI integrations?

Pact: hosting self-hosted; CI integrations not published. Schemathesis: hosting self-hosted; CI integrations GitHub Actions, GitLab CI.