https://wccftech.com/2020-ipad-pro-specs-6gb-ram-all-models/

Regardless of which storage model you purchase, whether it’s the 128GB base one, or the 1TB one, a new iOS 13.4 code leak reveals that the RAM count for all 2020 iPad Pro versions remains the same. That means that both the 11-inch and 12.9-inch models ship with 6GB of RAM, allowing for users to multitask effortlessly. Considering that even the 2018 iPad Pro is more than capable in 2020, having more RAM is always welcome.

The release of iOS 13.4 GM for developers unveils a lot of hidden details that Apple didn’t make public when it officially launched the 2020 iPad Pro. As mentioned above, all models feature 6GB of RAM, which is a 50 percent increase in memory compared to the 2018 versions. However, Apple was also selling a 6GB RAM-touting iPad Pro model back two years ago, but to get that, you’d have to get the 1TB storage option, which wasn’t feasible for a lot of customers, given its price tag.