The Petersburg Post

Friday, Apr 17th, 2026 - Catch up on select AI news and developments from the past week or so: ChatGPT 5.3 reduces outbound links as authority signals reshape AI search . ChatGPT 5.3 introduces a major shift in how AI search retrieves and cites information, combining broader query expansion with stricter source selection. The model now runs 10 or more fan-out searches per prompt, up from roughly 2 previously, yet cites fewer sources, with ...