{"success":true,"comparison":"citi-diamond-preferred-vs-platinum","summary":{"updatedAt":"2026-06-04T20:16:48.432Z","pageUrl":"https://cardcurator.ai/compare/citi-diamond-preferred-vs-platinum","jsonUrl":"https://cardcurator.ai/api/public/compare/citi-diamond-preferred-vs-platinum/summary","methodologyUrl":"https://cardcurator.ai/how-we-rank-cards","dataSourcesUrl":"https://cardcurator.ai/data-sources","shareTitle":"Citi Diamond Preferred vs Platinum","shareText":"The Citi Diamond Preferred and Platinum are closely matched. The better pick depends on whether you value lower fees, the current signup bonus, or category-specific earn rates more. On raw upside, Citi Diamond Preferred tops out at 1x versus 1x for Platinum. Current signup bonus values are roughly $0 for Citi Diamond Preferred and $0 for Platinum. Updated June 4, 2026. Source: https://cardcurator.ai/compare/citi-diamond-preferred-vs-platinum","evidenceBullets":["Citi Diamond Preferred wins 0 of 4 comparison categories in CardCurator's quick verdict model.","Top earn rate: Citi Diamond Preferred reaches 1x; Platinum reaches 1x.","Annual fee: Citi Diamond Preferred is no annual fee; Platinum is no annual fee.","Current public bonus values are approximately $0 and $0."],"winner":{"name":"Citi Diamond Preferred","slug":"citi-diamond-preferred","score":0,"maxEarnRate":1,"annualFee":0},"loser":{"name":"Platinum","slug":"platinum","score":0,"maxEarnRate":1,"annualFee":0}}}