Pact and Specmatic: documented facts side by side

Both tools document contract tests. 4 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

FieldPactSpecmaticStatus
Licenceopen-sourceopen-sourcesame
Hostingself-hostedself-hostedsame
Test classes documentedContract testsContract testssame
Test languagesC#, Go, Java, JavaScript, PHP, Python, Ruby, Rust, Swiftnot publisheddiffers
CI integrations named in docsnot publishednot publishedsame
Platformsapi, backendapidiffers
Published pricenot publishedfrom 0 USD per user per monthdiffers
First releasenot publishednot publishedsame
Vendor or maintainerPact Foundationnot publisheddiffers

Pact facts with sources · Specmatic facts with sources

Only on this page

Curated angle for this pair: contract format and languages.

The field with the largest difference is test languages: Pact lists C#, Go, Java, JavaScript, PHP, Python, Ruby, Rust, Swift; Specmatic lists not published.

Questions

What is the difference between Pact and Specmatic?

The field with the largest difference is test languages: Pact lists C#, Go, Java, JavaScript, PHP, Python, Ruby, Rust, Swift; Specmatic lists not published.

What is Pact, and what is Specmatic?

Pact: open-source, documents contract. Specmatic: open-source, documents contract.

Which test classes do Pact and Specmatic each document?

Pact: contract tests. Specmatic: contract tests.

Are Pact and Specmatic free?

Pact: open-source; price not published. Specmatic: open-source; price from 0 USD.

Are Pact and Specmatic open source or commercial?

Pact: open-source. Specmatic: open-source.

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

Pact: hosting self-hosted; CI integrations not published. Specmatic: hosting self-hosted; CI integrations not published.