PromptPerf is a tool designed to test AI prompts against multiple scenarios and measure output similarity. It offers features like test case creation, model configuration, evaluation running, and prompt refinement. With early-bird pricing, users can lock in lifetime access and receive all future features for free.

Limited functionality to try before you buy, 3 test cases per evaluation, basic similarity metrics, use your own API keys, basic results visualization.
One-time payment, lifetime access, all future updates included, unlimited test cases, advanced similarity analysis, use your own API keys, CSV & JSON export of results, results history & tracking, free updates.