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System Design Mode

System Design Mode is a special Whisperer response format optimized for architectural questions: it delivers structured answers with text diagrams, component schemas, and descriptions of architectural decisions. Indispensable at technical interviews and during system design discussions.

Available on Start, Pro, and Max plans.

When to Use

  • At System Design interviews: "Design Twitter", "How would you build a URL shortener".
  • When discussing architecture with a team: you need a structured answer, not just plain text.
  • When you need not a quick hint, but a detailed solution with rationale.

How to Activate

Method 1 — button in the overlay:

  1. Click the "System Design" button on the Whisperer CommandBar.
  2. Enter your question or leave it blank — Whisperer will take context from the transcript.
  3. Press Enter or "Send".

Method 2 — keyboard shortcut:

  • Configure a shortcut for System Design in /app/hotkeys (macOS) or in client settings (Windows).

📸 [Screenshot: "System Design" button on CommandBar and an example of a structured response in AnswerArea]

What the Response Looks Like

A System Design Mode response includes:

  • Requirements clarification (functional / non-functional requirements).
  • Scale estimation (QPS, data volume, users).
  • Architecture diagram in the form of a text diagram.
  • Component descriptions and their interactions.
  • Trade-offs.

Diagrams

macOS: diagrams are rendered as interactive SVG schemas directly in AnswerArea.

Windows: diagrams are displayed as formatted code — you can copy and paste them into any compatible tool (e.g., mermaid.live).

📸 [Screenshot: example diagram in System Design mode — microservices architecture schema]

Common Errors

Error Cause Fix
"System Design Mode unavailable" Free plan does not include this feature Upgrade to Start or higher
Response without a diagram The selected model does not support the System Design format Switch to Claude Opus or GPT-4o in settings
Diagram on Windows shows as code This is expected behavior (no SVG renderer) Copy the code and open it in mermaid.live
Response is too generic The model did not receive enough context Refine your question: add requirements to the text field

Best Practices

  • Articulate requirements out loud before the request — Whisperer will pick them up from the transcript and the answer will be more specific.
  • Use frontier models (Max) for complex scenarios: they handle structure and trade-offs better.
  • Ask follow-up questions: after the first response, type "Tell me more about the storage" or "Consider a queue-based approach" — the model will continue in the same format.
  • At an interview do not read the answer verbatim: use it as a plan and explain in your own words.

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