Codequiry is a source code plagiarism checker that scans student programming submissions against peer work, GitHub, Stack Overflow, and over 2 trillion web sources. It supports 65+ programming languages and includes built-in AI-written code detection for outputs from ChatGPT, GitHub Copilot, Claude, and other AI tools. The platform combines multiple detection engines—including MOSS, JPlag, Dolos, and its proprietary Hexagram and Zeus engines—into a single report with side-by-side matched line comparisons. It offers a free tier with limited web scans, paid subscription plans starting around 28–29 per month, and API access for enterprise integrations. Trusted by universities and engineering teams for academic integrity and code review workflows.