The study showing schema addition has no effect on citations is causing ripples in the SEO community.
Study Finds Adding Schema Has No Impact on AI Citations
Original: Study: Adding Schema Did Not Improve AI Citations On Google, ChatGPT & More
Importance: スキーマの影響に関する新たな研究結果が示されたため。
Summary
A new study from Ahrefs indicates that adding schema (structured data) does not affect citation counts on AI platforms like Google AI Overviews and ChatGPT. The study compared 1,885 pages that added schema between August 2025 and March 2026 against 4,000 control pages and found no statistically significant changes. While there was a 4.6% decline in AI Overviews, the overall changes were minor, particularly in AI Mode and ChatGPT, where differences could be attributed to random noise.
Key Points
- Adding schema has no impact on citations
- 4.6% decline in AI Overviews
- Minor improvements in AI Mode and ChatGPT
- Study analyzed 1,885 pages
- No statistically significant difference
View developer summary
Ahrefs studied 1,885 web pages that added JSON-LD schema from August 2025 to March 2026 and compared them with 4,000 control pages to analyze citation changes on Google AI Overviews, AI Mode, and ChatGPT. It found no significant impact on citations, with a 4.6% decline in AI Overviews. Treated pages in AI Mode and ChatGPT performed slightly better than controls, but the differences were marginal, indicating potential random noise.
Source: https://www.seroundtable.com/study-schema-citations-study-41311.html
Outlet: Search Engine Roundtable
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