AI engines use og:title and og:description as structured signals about your page. When Perplexity or Gemini needs a quick summary of what your page offers, OG tags are often their first stop — especially when the page body is complex or JavaScript-heavy.
Some AI engines (Perplexity, Bing Copilot) show thumbnail images alongside citations. Your og:image is what they pull. A branded, relevant image makes your citation visually stand out among text-only links.
Content that gets shared widely on social media generates backlinks and engagement signals that AI engines use to judge authority. Good OG tags lead to better-looking share cards, which lead to more shares, which lead to stronger AI visibility — a compounding loop.