The experiment, conducted over 16 months in collaboration with SE Ranking's research team, sheds light on the performance of AI-generated content in Google Search. The findings reveal a complex interplay between AI-generated content and search engine visibility, highlighting both the potential and limitations of this emerging technology. The study involved 20 new domains, each focusing on a different niche, and the results were intriguing.
Initially, AI-generated content demonstrated impressive performance. Within the first month, 70.95% of the 2,000 articles were indexed, a notable achievement for zero-authority domains. Some niches, such as Hobbies & Interests, Business & Services, and Lifestyle & Well-being, generated substantial impressions and clicks, indicating strong early visibility. However, this success was not sustainable.
The turning point came around three months after publication, when only 3% of pages remained in the top 100. This sudden decline in rankings can be attributed to the lack of authority, expertise, and unique insights in the content. Google's quality standards, particularly in YMYL (Your Money or Your Life) categories like finance and health, are stringent, and AI-generated content often falls short in these areas. The experiment's findings underscore the importance of human guidance and a clear SEO strategy to sustain long-term visibility.
The follow-up experiment, conducted in March 2026, revealed an interesting twist. Adding new AI-generated content to existing sites resulted in a noticeable lift in search impressions, particularly for older posts. This suggests that fresh content can temporarily boost traffic to stagnant pages, but it doesn't guarantee lasting gains in rankings or traffic. The key takeaway is that while AI can speed up content creation, it cannot replace the need for a robust SEO strategy and human oversight.
In conclusion, the experiment highlights the challenges and opportunities associated with AI-generated content in search engines. While early visibility can be achieved, maintaining long-term success requires a comprehensive approach that combines AI-driven content creation with traditional SEO practices and human expertise.
