Promptmetheus

Meet Promptmetheus

Promptmetheus gives developers a workspace for composing and testing prompts before using them in an AI application. You build a prompt from text and data blocks, create variants, and inject sample inputs from datasets. Comparing completions across models helps you examine what changes when the prompt or configuration changes.

You can rate results and define evaluators that check them against your requirements. Projects keep prompts, datasets, and completions together, with version history recording revisions. Cost estimates and statistics add context to the comparison. Team synchronization, exports, and custom model connections let a tested prompt move from the workspace into the application or agent workflow it is intended for.