Best agent testing AI tools

Plurai is an AI Agent Trust Platform that accelerates the development of production-ready agents by providing simulation, evaluation, and guardrails. It reduces failure rates, policy violations, and costs compared to large language models.

LangWatch is an all-in-one, open-source platform for monitoring, evaluating, and optimizing LLM applications. It specializes in AI agent testing through simulated user environments, helping teams catch regressions and edge cases before production. The platform combines observability, evaluation, optimization, and guardrails to ensure AI applications are reliable, secure, and performant.