Yes, many websites can help you determine if an AI system has generated a piece of writing. These websites typically use machine learning algorithms to analyze the language, structure, and content of a given piece of writing and determine whether a human or AI system generated it. One such website is "The AI ​​Content Detector" (https://aicontentdetectors.org), a free online tool that uses machine learning to detect whether an AI language model has generated a piece of writing. However, it is important to note that these websites are not always 100% accurate and may produce false positives or negatives. Therefore, it is important to use them along with other verification methods, such as manual review and analysis, to ensure that an AI system has indeed generated the writing in question.