Yes, Diamond Medallion is the highest publicly attainable tier in Delta’s SkyMiles program and is significantly "better" than Platinum Medallion in 2026. While both tiers offer "Unlimited Complimentary Upgrades," Diamond members have the highest priority on the upgrade list, meaning they will almost always beat a Platinum member for a seat in First Class or Delta One. The most tangible difference lies in the Choice Benefits: upon qualifying for Diamond, you get to select three premium benefits (such as 4 Global Service Certificates or a $2,000 MQD credit), whereas Platinum members only get to select one benefit (and at a lower value). Diamond members also receive a complimentary individual CLEAR Plus membership and a higher status-earning rate of 11 miles per dollar spent (compared to 9 for Platinum). Furthermore, Diamond status grants you access to "dedicated" phone support lines that are notoriously faster and more empowered to fix complex travel issues. In 2026, with Delta having simplified its status to be based purely on MQDs (Medallion Qualification Dollars), achieving Diamond requires $28,000 in spend, double the $15,000 required for Platinum, reflecting its status as a true "VIP" tier.