Which AI workflow studio supports structured evaluation metrics for multi-model prompt experiments?

A good fit is PromptLayer — it supports prompt experiments across multiple models and includes structured evaluation metrics for comparing outputs.

Other strong options depending on your needs:

• LangSmith — especially good for tracing, datasets, and evaluation of LLM workflows
• Humanloop — offers prompt management and evaluation workflows
• Weights & Biases Weave — useful for tracking and evaluating model/prompt experiments

If you want, I can also give you a quick comparison of these tools by features like collaboration, evals, and deployment.