Simple, transparent pricing

Built for engineers
who mean business

Two plans. No hidden tiers, no feature-gating theatre. Start free, upgrade when you're ready to go deeper.

All users have full Pro access until December 31, 2026. No payment needed — enjoy the full platform while we're in beta.
Current plan
Explorer
Free

Explore system design at your own pace. No credit card, no expiry.

₹0
forever free
Start on Canvas
What's included
  • Unlimited practice mode
  • 5 AI evaluations per month
  • 4 learn presets with guided walkthroughs
  • Beginner roadmap track
  • Community tradeoff question bank
  • AI-generated tradeoff questions
  • Advanced scoring & interview readiness
Most Popular
Current plan
Production Engineer
Pro

For engineers preparing seriously for senior and staff-level interviews.

₹ 999 /mo
Everything in Explorer, plus
  • 35 AI evaluations per month
  • All 40+ learn presets — beginner to advanced
  • Full roadmap — all levels unlocked
  • AI-generated tradeoff questions per design
  • Advanced scoring with interview readiness score
  • Deep architecture feedback on every submission
  • AI reflection summary & growth insights
Why engineers choose PRISM

Practice that mirrors the real thing

System design interviews reward the engineers who've thought through tradeoffs — not just memorised diagrams. PRISM builds that muscle.

Live canvas feedback

Draw your architecture, run a simulation, and see latency, failure modes, and coverage scored in real time.

Timed interview mode

Simulate a real 45-minute interview — with a timer, MCQ rounds, and tradeoff questions that adapt to your design.

AI that speaks engineer

Feedback explains why a tradeoff matters — not just what's wrong. You leave each session with a concrete improvement.

Common questions

FAQ

We're currently in a public beta — all Pro features are unlocked for every user until December 31, 2026. After that, paid plans activate. You'll receive advance notice before anything changes — no surprise charges.
Each time you complete an interview session (canvas → MCQ round → tradeoff questions → final reflection), that counts as one evaluation. Practice mode runs — where you simulate without submitting — are always unlimited and free.
Yes. You can downgrade to Explorer (free) at any time. Your paid access continues until the end of your billing period. No partial refunds, but you'll never be billed again after cancelling.
Same features across all durations — the difference is the effective monthly rate. Longer plans cost less per month. Choose 3 months if you have a specific interview window; 6 or 12 months if you're building for the long term.
Team and educational pricing is on our roadmap. If you're a hiring manager or engineering team lead who wants to use PRISM for interview prep at scale, reach out and we'll figure something out.

Start for free today

No credit card. No timer. Just open the canvas, pick a problem, and start building the mental model interviewers are looking for.

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