One key to all CodeGym technologies. Interactive self-paced courses include over 2000 lectures and over 3600 practical tasks. Learn Java, Python, C#, Frontend, SQL, Docker, ChatGPT Apps, and other directions. We're actively creating new courses — they automatically become available in your subscription. The exception is AI Academy courses, the new direction about working with AI (the first course is "Building with Claude Code"). Those courses work differently: they include access to the AI models themselves and to the new tools for working with them — so each academy course has its own price and subscription, and is not part of ALL IN ONE.

We created a special practice environment where you can safely experiment with code in different programming languages. All programs compile and execute in real-time, and you see the results instantly. This lets you learn through practice without any risk.

Over 3600 programming tasks in different languages and technologies. You'll master all key skills: from basic syntax to advanced concepts. OOP, collections, multithreading, asynchronous programming, database work, frontend development — all through practice. Each task has clear instructions and instant solution verification.

After submitting a solution for verification, you'll see a detailed report: which requirements are met and which aren't. Instead of guessing why your program doesn't work, you know exactly what needs fixing. This works for all platform courses.

When you submit a task for verification, many tests run to find known standard errors. If such errors are found, you receive a recommendation from the task’s developer on how to fix the error best.

All your programs are checked automatically and instantly. The system verifies not only correct syntax but also program logic. You get immediate feedback and can improve your solution, moving quickly through any course.

Our algorithms analyze your solution, and if it doesn't meet the conditions, you get smart recommendations from a virtual AI mentor. The system will suggest how to improve your code and avoid common mistakes, regardless of which course you're studying.