[statsigio]

Hey - Brock here from Statsig - we started out a couple years ago trying to make the best A/B testing tooling for developers, which as it turns out, a lot of the biggest AI companies have found valuable (OpenAI, Anthropic, etc.). Not always directly with prompts, but with model variants, new feature surfaces, etc.

With a combination of our feature flag and experiment tools I think you could accomplish everything you're looking for - with the exception of helping craft the prompts (we tend to leave that to other tools). We have a very generous free tier - if you'd like to try it out happy to provide any help I can!