Your AI-Powered
Engineering Mentor
Personalized roadmaps, expert lessons, and real interview prep — built just for you.
Join 2,000+ engineers already learning
What do you want to master?
Type any tech topic and get a structured, AI-built learning path in seconds.
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Learn like a senior engineer
taught you personally
Three steps from idea to production-ready understanding.
Tell us what you want to learn
Enter any tech topic and your current skill level. We handle the rest.
AI builds your personalized path
Get a structured roadmap with curated topics, time estimates, and dependency-aware learning order.
Learn, practice, get certified
Stream lessons, take adaptive quizzes, chat with your AI mentor, and earn a verified certificate.
Everything you need to go
from learning to hired
Built for engineers who want real depth, not surface-level tutorials.
AI Roadmaps
Structured learning paths for any tech topic, personalized to your level with dependency-aware ordering.
Streaming Lessons
7-section lessons generated in real-time, word by word — like a mentor explaining just for you.
Interactive Quizzes
Recall, application, and trade-off questions generated per topic to test real depth.
AI Mentor Chat
Ask anything about any topic. Explain mode or Interview mode — you choose the depth.
Interview Prep
Real interview questions per topic with expert sample answers. Practice before the real thing.
Completion Certificates
Earn verified certificates when you complete roadmaps and pass quizzes. Shareable on LinkedIn.
Ace every System Design interview.
208 topics from high-level architecture to low-level design and code. Study HLD patterns, work through LLD breakdowns, and practice real interview scenarios — all with AI that explains like a senior engineer.
✦ AI Expert Chat
Walk me through how you'd design a distributed cache. Start with the consistency model you'd choose...
✦ Deep Dive with AI
Walk me through Agentic RAG with a real-world example, step by step...
Master LLMs, RAG & AI agents.
74+ topics from LLM foundations to production AI systems. Study RAG architectures, fine-tuning, MCP, and multi-agent orchestration — with an AI that gives real examples and lets you go deeper on anything.
Master Prompting, RAG & fine-tuning.
158 topics from Python and NLP foundations through transformers, prompt engineering, RAG pipelines, and fine-tuned LLMs — plus three real industry projects, all with an AI tutor that adapts to your pace.
✦ AI Tutor
Walk me through building a RAG pipeline from chunking to retrieval, step by step...
Or learn from a YouTube video
Paste any tutorial URL and we'll turn it into a structured roadmap with lessons.
See it in action
Explore the platform before you sign up.
📍 System Design Roadmap — Intermediate
Simple, transparent pricing
Start free. Upgrade when you're ready.
Free
- ✓5 roadmaps/day
- ✓10 lessons/day
- ✓10 mentor chats/day
- ✓Quizzes & scenarios
- ✓Progress tracking & streaks
- ✓Completion certificates
Pro
- ✓20 roadmaps/day
- ✓50 lessons/day
- ✓50 mentor chats/day
- ✓Advanced AI (Claude Sonnet)
- ✓Full DesignHub, AI Engineering & Gen AI access
- ✓50 deep-dive sessions/day
Power
- ✓Everything in Pro
- ✓Full DesignHub, AI Engineering & Gen AI access
- ✓100 roadmaps/day
- ✓100 lessons/day
- ✓100 mentor chats/day
- ✓PDF upload & RAG lessons
- ✓Visual roadmap diagrams
New tracks (AWS, language-specific interview prep, and more) are added regularly — included in Pro and Power at no extra cost.
Contact us to discuss team access
Frequently asked questions
Yes — the free plan gives you access to roadmaps, lessons, and quizzes every day with generous daily limits. No credit card required.
CrackLab is personalized to your level and topic. No fixed curriculum — AI builds your exact learning path and generates lessons on demand for any subtopic you choose.
Absolutely. Every topic includes real interview questions with sample answers, plus an AI mentor you can practice with in interview mode that challenges your reasoning.
Certificates show completion with quiz scores and total time invested. They carry a unique verification URL you can share on LinkedIn, your portfolio, or résumé.
Any tech topic — System Design, AI Engineering, React, Python, DevOps, ML, Kubernetes, and hundreds more. If you can type it, we can build a roadmap for it.
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engineering career?
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