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.