Show HN: A FizzBuzz challenge (with leaderboard) using LLM canvas (opens in new tab)

Hi HN,

I've been working on a dead simple prompt engineering canvas that allows chaining prompts in a visual way.

I've built a product on top for creating hackerrank/leetcode style challenges where solutions compete on correctness, latency, token usage and cost.

I'm hoping the main product can become a prototyping and even production-quality tool for building prompt chains.

Perhaps the arena product will become an entry point for software engineers learning about building with LLMs and how multiple prompts work in production.

Thanks for looking,

-- Michael