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Generative AI Leader Practice Question: Measure the ROI of a GenAI-based report…
A company wants to measure the ROI of a GenAI-based report generation tool. Which metric is MOST directly tied to business value?
⚠ Common exam trap
The trap is selecting technical metrics like model accuracy or API calls as ROI indicators, when the exam expects a business-centric metric such as time saved that directly impacts cost or productivity.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Average time saved per report by analysts
The average time saved per report by analysts is the metric most directly tied to business value because it quantifies the productivity gain from the GenAI tool. Time savings can be translated into cost reduction or increased capacity, making it a clear ROI indicator. Other metrics like model accuracy or API calls are technical or operational, not direct business outcomes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Model accuracy on a test set
Why it's wrong here
Test-set accuracy measures model quality, not the business value the generated reports deliver, so it cannot demonstrate ROI. It is tempting because accuracy is the standard benchmark during model evaluation and selection, and it would be the correct measure when comparing candidate models before deployment.
- ✗
Number of API calls made per month
Why it's wrong here
API call volume measures consumption and cost, not business value; a tool can generate many calls while producing unused reports. ROI requires metrics tied to outcomes, such as hours saved or reports accepted. API calls are tempting because they are easy to instrument and bill against, but they track usage rather than the benefit delivered.
- ✗
Percentage of reports that require human editing
Why it's wrong here
Human editing percentage measures output quality and rework effort, not the financial return the tool generates. It is tempting because editing rates are easy to instrument, but cost savings, revenue, or hours saved tie directly to business value.
- ✓
Average time saved per report by analysts
Why this is correct
Analyst time saved per report translates directly into labour cost avoided, the clearest financial proxy for business value. It ties GenAI output to measurable productivity gains, unlike technical metrics such as token latency or model accuracy.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Google Cloud exam blueprint
This Generative AI Leader practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the Generative AI Leader exam.