SYNTACTIC COMPLEXITY IN AI-GENERATED AND HUMAN-WRITTEN ENGLISH TEXTS: A COMPARATIVE STUDY

This paper explores the syntactic complexity of English texts generated by Artificial Intelligence (AI) compared to those written by humans. The study aims to identify how AI structures sentences, uses subordinate clauses, and manages syntactic variation in contrast to human writing. A corpus of 40 texts—20 written by humans and 20 generated by Chat GPT—was analyzed using measures such as mean sentence length, subordination ratio, and clause density. The results reveal that AI-generated texts tend to exhibit syntactic balance and formal regularity, while human-written texts demonstrate greater syntactic variation and stylistic flexibility.