Yes, Turnitin includes a built-in AI detector within its plagiarism checker. It identifies content likely generated by tools like ChatGPT and highlights AI-written sections. It also provides an overall AI probability score based on the analysis.
Key details:
- Uses a transformer-based model trained on academic writing patterns
- Can detect both AI-generated text and AI-paraphrased content
- Breaks submissions into segments and evaluates each for AI likelihood
- Supports detection for texts with 300+ words in languages like English, Spanish, and Japanese
Limitations:
- Results are probabilistic, not definitive proof of AI usage
- May produce false positives (Turnitin reports around a 1% margin of error)
- Less effective on heavily edited or mixed human-AI content
Turnitin is primarily designed to assist educators in identifying potential AI use, but results should always be reviewed alongside human judgment. However, you can explore the Quetext AI detector, which is highly effective at identifying AI patterns and is used by thousands of professors.