Prompts Royale

Prompts Royale is an open-source tool that automatically generates and ranks AI prompts by pitting them against each other in head-to-head battles. It uses Monte Carlo matchmaking and ELO rating to efficiently determine the best prompt candidate from a set, minimizing the number of comparisons needed. Users can auto-generate prompt candidates and test cases from a task description, or write their own, and all data is stored locally with requests made directly from the browser to the LLM API. It can be used via the hosted site at promptsroyale.com or run locally by cloning the repository.