Figure 1
A line graph titled “AI-Generated Listings Percentage by Month.” The horizontal axis shows months between October 2018 and August 2025, sampled at irregular intervals rather than continuously. The vertical axis shows the percentage of listings identified as AI-generated, ranging from 10 to 80 percent. The series begins at 30.0 percent in October 2018 and falls to a low of 10.0 percent in May 2022. From January 2023 it rises steadily, passing 50 percent by August 2023 and reaching 60.9 percent in January 2024. Values then fluctuate between roughly 53 and 64 percent through 2024, reach 66.7 percent in June 2025, dip to 60.0 percent in July 2025, and rise sharply to [78.9] percent in August 2025, the highest value in the series.AI-detected listings month on month