Cheapest API for code execution | Judge0 (now CodeArena) hosted by Me | Free to use

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Judge0 (pronounced like "judge zero") is a robust, scalable, and open-source online code execution system. You can use it to build a wide range of applications that need online code execution features. Some examples include competitive programming platforms, e-learning platforms, candidate assessment and recruitment platforms, online code editors, online IDEs, and many more.

In our research paper Robust and Scalable Online Code Execution System, we present Judge0's modern modular architecture that can be easily deployed and scaled. We study its design, comment on the various challenges in building such systems, and compare it with other available online code execution systems and online judge systems.

To see Judge0 in action, try Judge0 IDE - our free and open-source online code editor.

Features

Quick and easy installation
Rich and verbose API documentation
Scalable architecture
Sandboxed compilation and execution
Support for 60+ languages
Compilation and execution of multi-file programs
Support for additional files alongside the user's program
Support for custom user-defined compiler options, command-line arguments, and time and memory limits
Detailed execution results
Webhooks (HTTP callbacks)
For more information about these and other features, please read the documentation.