quality
2 free lessons tagged quality across Programming, AI. Each one is a short sequence of focused steps with narration and a five-question quiz at the end — take them in any order, no signup required.
What Is Worth Testing, and the Shape That Follows
Every test costs time to write, time to run, and time to maintain when the code moves. This lesson works out what that budget should buy: what each level of test can and cannot catch, why the pyramid has the shape it does, why some teams invert it, and the arithmetic that decides both questions before anyone argues about it.
LLM evaluation: how to know your model output is actually good
Why traditional software testing falls apart on LLMs, the four evaluation regimes that work in practice (golden sets, LLM-as-judge, human review, online metrics), and how to wire them together without drowning in ungrounded scores.