The OLED Flex is a TV with some extra features like a built-in smart system and processing, while the 45GR95QE-B has a DisplayPort connection. Compare Side-by-Side SEE OUR REVIEW LG 27GR95QE-B SEE PRICEAmazon The LG 45GR95QE-B and the LG 27GR95QE-B are part of the same line...