Wikipedia's volunteer editors are quietly deleting AI slop from the world's encyclopedia

Wikipedia's Cleanup of AI-Generated Content

Ellia Lebleu, a founding member of WikiProject AI Cleanup, explains how volunteers hunt down machine-written text that violates Wikipedia's guidelines. Early giveaways like "stands as a testament" have given way to subtler structural tells, and fake or misleading citations are now a major worry. Detection firm Pangram flagged roughly 20 percent of new articles as AI-generated in late 2025, falling to about 15 percent in early 2026 — though it's unclear whether policy or better models explain the drop.