Epoch AI Tests Three AI Text Detectors: Nearly 30% of Content Missed After Mimicking Human Writing Styles
Epoch AI research shows that mainstream AI text detectors can nearly perfectly identify ordinary AI-generated content, but when large language models deliberately mimic the writing styles of specific authors, their accuracy drops significantly, with scientific writing being the hardest to detect. The experiment tested three tools: Pangram, GPTZero, and Originality.ai. It used 495 human-written texts covering blogs, novels, and scientific writing (all created before ChatGPT existed), and found that style imitation can effectively evade detection.