Analysis of AI Writing Patterns in Language Models

The article discusses the rhetorical device known as 'negative parallelism,' exemplified by phrases like 'It’s not X; it’s Y.' This construction appears frequently in AI-generated text, including corporate communications and literature. A report by Barron’s indicates that the use of this device in corporate communications has increased significantly from 2023 to 2025. Researchers at Pangram estimate that such sentences are three times more common in AI writing compared to human writing. The article also explores the reasons behind the prevalence of this construction in AI models, suggesting that it may stem from the patterns in the training data and the reinforcement learning process used to refine these models. Experts note that while this rhetorical device can enhance clarity, its overuse may lead to formulaic writing. The persistence of negative parallelism raises concerns about the potential for AI-generated text to increasingly resemble itself, complicating efforts to improve AI writing quality.