Metrics question

What metrics would tell you whether Perplexity is winning against Google Search?

Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.

What this question tests

Whether the candidate can define what winning actually means against an entrenched, much larger incumbent.

Clarify what winning means: not overtaking Google's total query volume, but capturing a durable share of high-intent, complex informational queries where synthesis beats a list of links.
Propose a market-share metric: share of a defined query category, like multi-step research questions, going to Perplexity versus traditional search.
Propose a satisfaction metric: query resolution rate without needing to click through to another search engine afterward, showing the answer was actually sufficient.
Propose a retention metric: percentage of users who make Perplexity their default or primary search habit over a sustained period, not just a one-off trial.
Propose a guardrail: source citation click-through rate, since a healthy answer engine should still drive traffic to publishers, not just replace all outbound clicks.

Reframes winning as capturing a specific high-value query segment rather than total search volume, since a direct volume comparison to Google is not a fair or useful framing.
Proposes a concrete behavioral signal, no follow-up search on another engine, as evidence the answer was genuinely sufficient.
Names default-search-habit retention as the real long-term indicator of winning, since a one-time trial does not indicate durable behavior change.
Adds the publisher citation click-through guardrail, showing awareness that Perplexity's health depends on remaining a good ecosystem partner, not solely a search competitor.

Proposing raw query volume against Google as the metric, which sets an unrealistic and not particularly meaningful bar.
Ignoring the publisher relationship dimension entirely when defining what winning should look like.

Which query category would you prioritize measuring first, and why?
How would you know if users are using both Perplexity and Google rather than truly switching?