Product design question

How would design a platform like grammerly?

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

Product design for an AI-powered writing assistant, addressing accuracy, trust, and integration into existing workflows.

Clarify the target user, students, professionals, or non-native English speakers, since needs and tone preferences differ.
Identify the core value proposition, real-time grammar, clarity, and tone suggestions embedded directly where people already write, not a separate app.
Prioritize integration over a standalone tool, a browser extension and app integrations, since writing happens across many surfaces like email and documents.
Design the core interaction, inline underlines with one-click accept suggestions, plus a tone and clarity score for longer documents.
Address trust, explaining why a suggestion was made, not just what to change, so users learn and trust the tool over time.
Define success metrics, suggestion acceptance rate and user-reported writing confidence or error reduction over time.

Prioritizes ubiquity through browser and app integrations over a standalone editor, since writing assistance is only valuable where writing already happens.
Proposes explainable suggestions, not just corrections, which builds long-term trust and differentiates from a black-box tool.
Segments by user type, e.g. non-native speakers needing more explanation versus professionals wanting quick tone polish.
Sets a meaningful metric, suggestion acceptance rate, as a direct proxy for whether the tool's judgment is trusted.

Designing a standalone app instead of prioritizing integration into where users already write.
Proposing corrections with no explanation, reducing user trust and learning.
Not segmenting by user type despite very different needs, e.g. students versus professionals.

How would you handle a suggestion the user disagrees with.
How would you monetize this product.
How would you measure whether users are actually improving their writing over time.