OpenAI quietly updated ChatGPT search's citation behavior on April 9, 2026, increasing the weight given to high-authority publishers and structured-data-rich pages. Across our Canadian SMB client cohort we saw citation share for 38% of monitored brands shift meaningfully in the 10 days that followed. Here's what changed.
Pages with FAQPage and Article structured data, sites with a documented Person schema for the page author, and pages from domains with consistent NAP across the web. Reddit and Wikipedia presence remains the single most-cited source, but the long tail of cited domains shifted toward structured-data-rich SMB sites.
Brand pages with no structured data lost the most. Sites with author bylines but no linked Person bio with sameAs links also lost. Pages with content older than 18 months without visible refresh saw modest declines.
(1) Add Person schema with sameAs (LinkedIn, X, Wikipedia where applicable) for every page author. (2) Add Article schema with author and dateModified to all editorial content. (3) Audit your top 20 cornerstone pages for last-updated freshness and bump anything older than 12 months.
ChatGPT search citation weights shifted on April 9, 2026.
Structured data (FAQPage, Article, Person) is now a stronger signal.
Bylines without linked author bios with sameAs are losing share.
Reddit + Wikipedia remain the dominant cited sources — but the long tail shifted toward SMB sites with strong schema.