Prompt Engineering Fundamentals
Last reviewed
Correct answer: D. Selecting a different model, which can improve latency and cost more easily
Explanation
The principle — Prompting is one lever among several. Knowing which failures it cannot reach stops you from tuning wording against a problem that lives elsewhere.
Why the key is correct — Anthropic's overview states that not every success criterion or failing evaluation is best solved by prompt engineering, and gives the example that latency and cost can sometimes be improved more easily by selecting a different model. That is a change to the system rather than to the text.
Why the others are wrong — Rephrasing and chaining are both prompting techniques. And temperature changes how varied the output is, not how good it is.
Remember this — Ask whether better wording could possibly fix this. Sometimes the honest answer is no.
Sources — Anthropic, Prompt engineering overview.
Sources
“Not every success criteria or failing eval is best solved by prompt engineering. For example, you can sometimes improve latency and cost more easily by selecting a different model.”
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