Wikipedia's Cleanup of AI-Generated Content

Ellia Lebleu, a founding member of the volunteer WikiProject AI Cleanup launched in 2023, describes how early AI writing was betrayed by clichés like "stands as a testament" while 2025-era signs are subtler and more structural, and she says fake or misleading citations have become a major worry. She estimates, using Pangram detection with no false positives on pre-ChatGPT content, that roughly 20 percent of new articles and drafts were flagged as AI-generated in late 2025, falling to 15 or 16 percent in early 2026, though it is unclear whether policy or stronger models explain the drop. She discusses AI tools used against AI content, Wikipedia's human-written identity, and possible futures including attribution frameworks and reader contributions through AI models.