Posts tagged with "Testing"

Unit tests cover deterministic functions. Agent loops are not deterministic. The evaluation gap is where most production agent failures live, and where the regressions are easiest to catch with a small amount of disciplined infrastructure. Three eval dimensions, how to build a labelled set, and where LLM-as-judge actually works.

A side-by-side comparison of DeepEval, Promptfoo, and LangSmith for evaluating agentic AI systems in 2026 — on metrics, tooling, CI integration, agent-specific evaluation, and when each is the right pick.