According to Official Guinness Records,
The largest cheese platter weighs 2,012.85 kg (4,437 lb 9.92 oz), and was prepared by Dairy Farmers of Wisconsin (USA) in Madison, Wisconsin, USA, on 1 August 2018.Around 145 varieties of cheese were used in the attempt, with all cheese coming from producers in Wisconsin. One wheel of cheese on the cheese board, a Mammoth Cheddar, weighed in at 2,064 pounds on its own. Over 600 varieties, types and styles of cheese are made in Wisconsin;that's two times more than any other state. The event raised money for the Great American Milk Drive which provides milk to Second Harvest Foodbank and Feeding America.
For a complete list of 2018 records, please visit 2018 Guinness Records in United States.