Question: How can I check if my student's assignment is original or copied from an AI source?

For verifying whether a student's assignment is their own work or whether they copied it from an AI source, Turnitin is a robust academic integrity and grading platform. It combines AI writing detection technology with advanced algorithms to detect AI-generated content and offers tools for originality checks, feedback and grading. The platform is designed to help educators address different academic dishonesty trends, including contract cheating and AI-generated content.

Another good choice is Copyleaks, which offers a range of AI-powered tools to detect plagiarized content, AI-generated content and to improve writing quality. It works with multiple languages and can be integrated with Learning Management Systems. The platform is designed to protect data and comply with GDPR, so it's a good option for institutions and companies.

If you're looking for something more specialized, check out GPTZero. This AI detector is designed to spot text written with large language models like ChatGPT and GPT-4. It offers features like Deep Scan for in-depth analysis and Source Scanning for plagiarism detection, so it's good for educators and writers who need to scrutinize AI text.