You can use Ready! API to compare the results of different tests, review errors, and so on. To perform these tasks, you can select an interface tab depending on your purposes:
The Transaction Log tab allows you to review the test run and learn about errors if any.
The Compare tab allows you to compare two different test runs.
The History tab allows you to review the test runs within a single project.
These tabs are available at multiple project levels. See the respective sections to learn more.