The autograder trusted by world-class institutions. Now free.
Automatic grading, inline feedback, plagiarism detection, and 175+ languages. Up to 50 students. No credit card, no expiration.


Automatic grading, inline feedback, plagiarism detection, and 175+ languages. Up to 50 students. No credit card, no expiration.


No installs, no environment headaches. Students open the assignment, write code in a browser-based editor, and get line-by-line feedback the second they hit submit. Works with Python, Java, C++, JavaScript, R, and 170+ more languages.

No config files. No scripting. Drag and drop test blocks to build your grading pipeline, then let CodeGrade run every submission through it automatically. Results land in your LMS gradebook before you finish your coffee.

Click on a line of code, type your comment, done. Students see your feedback pinned to the exact line that needs fixing, not buried in a separate rubric or email. Save time with reusable snippets for comments you leave every semester.

No procurement process, no IT tickets, no credit card. Sign up with your .edu email, create your first assignment, and share the link with your students. CodeGrade handles the grading from there.

The free tier covers autograding, feedback, and plagiarism detection for courses up to 50 students. When you're ready for more, upgrading unlocks the full platform. No pressure, no deadline.

Stuck on a tricky test config? Our support team is made up of CS graduates who understand your course, not generic help desk agents reading from a script. They'll help you build test setups, troubleshoot edge cases, and get your course running.


World-class institutions all over the world partner with CodeGrade to bring their programming education to the next level.