• Fix LLD notification badge dismissal;
• Add code editor for editorials.

🔥 New course: Low-Level Design (LLD / OOD) interviews . Learn object-oriented design for interviews end to end — a six-step delivery framework, OOP foundations, the SOLID principles, the common design patterns, and concurrency.

• 15 case-study walkthroughs — parking lot, elevator, ATM, vending machine, logging framework, Splitwise, in-memory file system, hotel booking, rate limiter, in-memory key-value store, chess, and more — each with a runnable solution in multiple languages, decision checkpoints, and a run-and-test trace.
• Practice problems out loud with the AI mock interviewer, graded on a real rubric.

• Content updates and bug fixes

New — Your Roadmap (/path): a personalized, step-by-step study plan. Take a quick placement quiz, pick your target companies, and get one ordered path with a clear next step, company-tagged practice problems, Tested Out skipping for topics you already know, and a finish-date estimate you control by setting lessons per week.

• Added more visualizations to the Foundation Course.

• Add algorithm visualization for more articles.

• Improved AI-Enabled Interview Questions

• Updated parts of the Algorithm Visualization content to improve clarity and understanding.
• Optimized the experience on smaller screens for better usability and responsiveness.

• Updated flowchart
• Update teaching assistant

• Added AI-enabled interview problems for realistic mock interview practice
• Improved the Practice page with content and layout updates for a better browsing experience

• Added chat history
• Improved article content
• Enhanced Algorithm Visualization

• Added more AI-enabled interview questions.
• Introduced Algorithm Visualization to the Foundation course.

• Content and visualization updates

AI-Enabled Coding Interview

Introducing the AI-Enabled Coding Interview module. Users can now practice coding problems with real-time AI assistance — ask for hints and guidance instead of jumping straight to the solution. Problems use a progressive unlocking system that guides you through building a complete solution step by step. The built-in code editor supports Python, Java, C++, and JavaScript with online test execution, a timer, and automatic progress saving. Two practice problems are available at launch, with more coming soon.

• Added Algorithm Visualizer support for Graph and Priority Queue.

• Added a state-space tree view to visualize backtracking and top-down DP problems.
• Fixed known issues.

• Randomized the order of options in Speedrun mode for a more varied experience
• Added support for more problems with algorithm visualization

• Fixed several known issues to improve stability.

• New course: Low-Level Design (LLD / OOD) interviews. Learn object-oriented design for interviews end to end — a six-step delivery framework, OOP foundations, the SOLID principles, the common design patterns, and concurrency.
• 15 case-study walkthroughs — parking lot, elevator, ATM, vending machine, logging framework, Splitwise, in-memory file system, hotel booking, rate limiter, in-memory key-value store, chess, and more — each with a runnable solution in multiple languages, decision checkpoints, and a run-and-test trace.
• Practice each case study out loud with the AI mock interviewer, graded on a real rubric.

• Bug fixes

• Bug fixes and UI updates

• Use the '?' button at the bottom right corner to ask questions and share feedback.

• Add more practice problems to DFS on Tree section

• Updated ROI chart

• UX improvements

• Addiontal practice questions for Prefix Sum.
• Highlight any article content to use as context to chat with AI.
• Command + enter to enter a new line in chat with AI.

• Resolved the compilation issue in Golang.

• Minor UX updates

• Added ruby and rust support

• Added more company interview guides

• update stack and queue intro articles

• Fix go compiler timeout

• Company Interview Guides

• System Design: Uber

• Select text and ask Monster AI for an explanation.

• UI revamp

• Content revamp

• Add Go solutions to BDS and backtracking.

• Added Go solutions to binary search and BFS.