arXiv AI By Myokyung Han, Taegyoon Kim, Jinhyuk Yun, Lanu Kim

The Uneven Decline of Collective Knowledge Production: Evidence from Stack Overflow After Generative AI

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The study examines how the release of ChatGPT-3.5 affected collective knowledge on Stack Overflow, analyzing over two million questions from 2020 to 2025. It finds that easy questions declined sharply while difficult ones increased, with rising code complexity. Data-rich topics lost share of questions, whereas data-scarce ones gained, and these patterns held across multiple programming languages.

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