Side by side
OpenAPI Studio vs Pact
Both stand on api design tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Choose OpenAPI Studio if you want a visual API editor with request recipes, MCP tools, and support for both OpenAPI and AsyncAPI. Its free plan covers one workspace and three members; teams needing integrations, more workspaces, or longer execution history will need a paid plan. Look elsewhere if SSO, SCIM, or audit logs are required.
Visit OpenAPI Studio
Pact focuses on contract-based integration checks, with tools for HTTP, messaging and deployment compatibility workflows. Its value is strongest when the same team controls both consumer and provider development; the free Broker requires self-hosting.
Visit PactThe facts
| OpenAPI Studio | Pact | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Self-hosted, Web | API, Linux, Mac, Self-hosted, Windows |
| Lowest paid plan | Pro: $9 a month | PactFlow Team (yearly): $115.42 a month |
| Plans published | 4 | 5 |
| Maker | Not published | Not published |
| Website | openapistudio.app | pact.io |
| On api design tools | #14 of 26 | #10 of 26 |
OpenAPI Studio: what it does well
- Visual API paths with four graph layout algorithms.
- Recipes chain up to 10 calls with JSONPath mapping and assertions.
- MCP server provides six tools in each workspace.
- Models and tests WebSocket endpoints and exports AsyncAPI 3.0 YAML.
- Workspace roles include Owner, Editor, and Viewer.
What to know first
- Free plan is limited to one workspace and three members.
- Free plan excludes GitHub and other integrations.
- SSO, SCIM, and audit logs are not offered.
Pact: what it does well
- Tests consumer and provider applications in isolation
- Implementations cover more than ten languages
- Broker supports contract sharing and CI/CD compatibility checks
- Verifier supports HTTP and multiple message types
What to know first
- Free Pact Broker must be hosted and operated separately
- Self-hosting makes the operator responsible for security and upgrades
- Not intended for performance or load testing
- Not intended for provider functional testing
Alternatives to OpenAPI Studio Alternatives to Pact The whole list