The UJ Libraries subscribe to the Chronicle of Higher Education, which has been publishing extensively about AI and teaching and learning.
No AI checker is accurate 100% of the time. If you are going to put student writing through an AI checker, use multiple checkers and don't rely on a single tool. The best AI/plagiarism detector is to be familiar with your students' writing voices in the first place.
Popular AI checkers include those from OpenAI, GPTZero, CopyLeaks, and Turnitin's built-in tool.