BAML is a language that helps you get structured data from LLMs, with the best DX possible. Works with all languages. Check out the promptfiddle.com playground

vim as a perfect large language models prompts playground

Utilized unify and build chat interface in the application where the user enters a prompt and simultaneously sees the output from the two chosen LLMs and see the Leaderboard of the LLMs which is performing well for given prompt