Master coding interviews with AI-powered practice
Real interview questions for 10 languages and frameworks. Targeted for FAANG, startups, enterprise, and AI-first companies. Free 30 questions every month.
No credit card required · Free forever tier
Practice for all the languages that matter
Everything you need to ace the interview
Six features that make QuizKode different from every other practice platform.
Real interview questions
AI generates questions grounded in what companies actually ask in 2026.
10 languages, 7 styles
JavaScript, TypeScript, Python, React, Next.js, Node.js, Java, SQL, Go, Docker. Concept, output prediction, bug spotting, and more.
Structured explanations
Every answer comes with a key takeaway, a why-it-works breakdown, and a runnable code example.
Interview prep mode
Target FAANG, startup, enterprise, or AI-first company style at your exact experience level.
Track your progress
Streaks, per-topic scores, badges, and insights show you what to practice next.
Free forever tier
30 questions every month with no credit card required. Upgrade only if you want more.
Practice in three steps
Configured for real developers, not trivia contests.
Pick your stack
Choose language, topics, difficulty, question style, and an optional time limit.
Take the quiz
Code-rich multiple choice with a built-in timer and structured question flow.
Learn from the review
Detailed explanations with code examples help you actually understand, not memorise.
See a real question
Code-rich, interview-realistic, with deep explanations.
What will the button render after three rapid clicks, assuming the server-side onLike takes 2 seconds to respond?
import { useOptimistic } from 'react';
function LikeButton({ likes, onLike }) {
const [optimisticLikes, addOptimisticLike] = useOptimistic(
likes,
(current) => current + 1
);
return (
<button onClick={() => {
addOptimisticLike();
onLike();
}}>
{optimisticLikes} likes
</button>
);
}Join thousands of developers who are already practicing on QuizKode.
Simple, transparent pricing
Start free. Upgrade when you need more.
- 30 questions every month
- All 10 languages and frameworks
- Concept and output prediction styles
- Structured explanations
- Personal quiz sharing
- 250 questions per month
- All 7 question styles
- Interview Prep Mode with FAANG/startup/AI-first targeting
- Claude Sonnet premium quality
- Mixed and refresh modes
- All future features
Questions, answered
Is it really free?
Yes — 30 questions every month on the free tier with no credit card required. Pro unlocks 250 questions and advanced features.
What languages and frameworks are supported?
JavaScript, TypeScript, Python, React, Next.js, Node.js, Java, SQL, Go, and Docker at launch. Each language has a curated topic list aligned with real interview patterns.
How does the AI generator work?
QuizKode routes requests to DeepSeek, Claude, or Gemini based on your tier and the question difficulty, then caches generated questions in a shared DB so repeated requests hit the cache instead of burning tokens.
Can I track my progress over time?
Yes. Every quiz you take is stored in your history with per-topic scores, a streak counter, and badges that unlock as you hit milestones.
How often are new questions added?
Continuously. Every AI-generated question gets saved to the shared question bank, so the bank grows every day as more users practice.
Start practicing for your next interview
Free 30 questions every month. No credit card required.