{"id":12,"slug":"ahrefs-schema-no-citation-lift-2026","title":"Ahrefs (April 2026): adding schema to 1,885 pages produced no AI-citation lift; AI Overviews showed -4.6%","kind":"reference","scope":"business","status":"current","audiences":["claude-code","candid-team"],"topics":["schema-org","ai-citation","measurement"],"reference_body":"**Claim:** Ahrefs tracked 1,885 pages adding JSON-LD between Aug 2025 and Mar 2026, matched against 4,000 control pages. *\"Adding schema produced no major uplift in citations on any platform.\"* AI Overviews on treated pages declined **4.6% more than controls** (statistically significant); AI Mode and ChatGPT showed small, non-significant changes.\n\n**Source:** Ahrefs, \"We Tracked 1,885 Pages Adding Schema. AI Citations Barely Moved.\" April 2026. <https://ahrefs.com/blog/schema-ai-citations/>\n\n**Confidence:** Verified.\n\n**Critical caveat:** Every page in the study already had **100+ AI Overview citations** before treatment. The study measures whether schema moves *already-cited* pages, not whether it helps pages get cited in the first place. Confounded for acquisition; valid for incremental lift.\n\n**Contested by:** Suganthan Mohanadasan (\"three lives of schema\") and SchemaApp — both argue the study only measures one of three schema effects (real-time query fetch), missing the larger Knowledge Graph and training-data effects that compound over years. See [[schanbacher-faqpage-product-schema-2025]] for a contrasting peer-reviewed finding on acquisition.\n\n**Used for:** the \"schema is necessary infrastructure, not a citation hack\" framing. See [[rule-schema-as-hygiene-not-growth-lever]].","rationale_body":null,"metadata":null,"links":{"outgoing":[{"slug":"schanbacher-faqpage-product-schema-2025","title":"Schanbacher (SSRN 2025): FAQPage and Product schema strongly predict ChatGPT visibility (single-domain peer-reviewed)","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"suganthan-schema-three-lives","title":"Suganthan: schema has three lives — index-time, training-time, query-time","kind":"reference","scope":"business","link_type":"relates-to"}],"incoming":[{"slug":"google-schema-not-required-for-ai","title":"Google (May 2026): \"Structured data isn't required for generative AI search\"","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"rule-schema-as-hygiene-not-growth-lever","title":"RULE: Always ship schema as hygiene. Never expect it alone to move AI citations.","kind":"rule","scope":"business","link_type":"depends-on"},{"slug":"research-brief-structured-content-as-competitive-advantage","title":"Research brief: Structured content as a competitive advantage (piece 2 of 15)","kind":"reference","scope":"business","link_type":"relates-to"}]},"created_at":"2026-05-22T18:57:39.520Z","updated_at":"2026-05-22T18:57:39.520Z"}