1:1 mentoring with Big Tech AI engineers
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18 design-studio problems, unlimited AI reviews, all system-design questions with solutions, and full access to 149 guide sections. Cancel anytime.

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  • 1 Design Studio problem (Deep Research Agent)
  • 5 AI review attempts
  • 1 system design question
  • Previews of 2 applied scenarios
  • 1 knowledge Q&A category
  • Preview access to all topics
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  • All 18 Design Studio problems
  • Unlimited AI reviews
  • All 18 system design questions with solutions
  • All 9 applied scenarios
  • All 8 knowledge Q&A categories
  • Full access to 149 guide sections
  • Architecture diagrams & Mermaid charts
  • Priority support
staff-grade content
149
guide sections
real interview signal
18
system design challenges
AI-graded feedback
∞
reviews on premium
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Compare what you get

FeatureFreePremium
Design Studio problems1All 18
AI review attempts5Unlimited
System design questions1All 18
Applied scenarios2 previewsAll 9
Knowledge Q&A categories1All 8
Guide sectionsPreviewFull access (149)
Solutions & walkthroughsLockedAll unlocked
Architecture diagramsLimitedAll included
Priority support—✓

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