Comparison · last reviewed April 2026
The original and most widely-recognized system design interview course, originally on Educative and now also sold on DesignGurus.io.
Grokking the System Design Interview is the canonical primer — read it once to learn the standard problems and patterns. SystemCity is where you go next: 120+ problems, an interactive canvas to build on, and AI feedback on every design.
Grokking the System Design Interview was the course that defined the genre. Its curriculum (Twitter, TinyURL, Instagram, etc.) is the de facto standard list of FAANG-style problems. The course is text-only — clear and well-structured, but fundamentally read-only. After finishing it, most candidates need a place to actually practice; that's where SystemCity fits.
| Dimension | SystemCity | Grokking the System Design Interview |
|---|---|---|
| Core format | Interactive drag-and-drop canvas + reference solutions | Text walkthroughs (no interaction) |
| Number of problems | 120+ problems across all difficulty levels | ~16 in the core curriculum |
| Practice loop | Build → submit → AI feedback → iterate | Read → reread → think about it |
| Brand recognition | Newer brand, growing user base | Well-known reference in the prep community |
| When to use | For ongoing practice over weeks or months | For a one-time read-through of the canonical problems |
| Pricing | Free tier + Premium from ₹99/month (~$1/month) | On DesignGurus.io: ~$79 one-time or ~$33/month (as of Apr 2026). Also bundled in Educative Personal subscription. |
Pricing — SystemCity: Free tier + Premium from ₹99/month (≈ $1/month). Billed in INR via Razorpay. Grokking the System Design Interview: On DesignGurus.io: ~$79 one-time or ~$33/month (as of Apr 2026). Also bundled in Educative Personal subscription.
Strengths
Limitations
If you are completely new to system design, yes — Grokking is the most efficient way to learn the canonical FAANG problems and patterns. After you have read it, switch to SystemCity to actually practice building the designs yourself with AI feedback. The two are complementary, not directly competitive.
The core curriculum (Twitter, TinyURL, Instagram, chat systems) remains relevant because real interviews still draw from these problems. However, the content has not been substantially refreshed in years and the read-only format limits how much you actually retain. For active practice, look elsewhere.
The classic Grokking curriculum covers around 16 problems. SystemCity offers 120+ problems across easy, medium, hard, and advanced tiers — including the canonical Grokking set plus many modern systems (real-time collaboration, payment systems, ride-sharing, ML serving, and more).
Browse 120+ system design problems, build architectures on the interactive canvas, and get AI feedback on your designs. No credit card required.