Postman vs Step CI

From $14 per user/month (Basic, billed annually)

Free and open source

Free tier is generous for individuals. Costs come from collaborator seats and monitoring/mock-call volume, and enterprise plans jump sharply.

Free and open source. You pay in engineering time and CI minutes.

Free plan for individuals and small teams with limited collection runs, mock calls and monitors.

Everything, self-hosted

Category standard

Postman, Inc. · since 2012

Emerging

Step CI · since 2022

• Near-universal adoption — collections are a lingua franca between teams and vendors.
• Covers design, mocking, testing, documentation and monitoring in one place.
• Newman makes any collection runnable in CI without rewriting it.

• YAML workflows are easy to review in a pull request and need no runtime knowledge.
• Generates a starting suite from an OpenAPI spec.
• Includes basic load-testing capability in the same file format.

• Cloud-first sync raised real concerns for teams handling sensitive API credentials; the offline story has been repeatedly reduced.
• Collections stored in the vendor cloud rather than your repo make code review and branching awkward.
• The desktop app has grown heavy, and per-seat costs add up on large teams.

• YAML hits a ceiling on complex conditional logic.
• Small project with limited community support.
• Ecosystem and reporting are thin compared to established tools.

Teams that want one tool covering the whole API lifecycle and value ecosystem ubiquity.

Small teams wanting declarative, repo-versioned API checks in CI.