Humanloop

Humanloop belongs in the catalog because it has become one of the most recognizable enterprise-facing products in the AI evaluation and prompt management layer. The official site positions it around prompt management, evaluation workflows, observability, and governance for production LLM systems. That makes it relevant to teams that want more structure than raw tracing, especially when multiple engineers and domain experts need to collaborate on how AI features are tested and released.

It also deserves inclusion because the pricing posture is public enough to be useful even though the product is clearly enterprise-oriented. Humanloop exposes a free try-out tier with concrete limits and then moves into enterprise packaging, while also advertising a startup program. That is more actionable than many evaluation vendors that skip public entry terms entirely.