The Open Philanthropy Project is a group of adults who want to help other people. They are like grown-up superheroes who use their money to make the world a better place. They try to find the best ways to help people who are struggling or who need something important.
Imagine you have a big pile of toys and want to share them with your friends, but you don't know who needs them the most. The Open Philanthropy Project does something similar, but instead of toys, they have lots of money to donate. They use this money to help people who are sick, hungry, or in trouble, and they try to find the best way to use their money to help the most people.
For example, if there are lots of people who don't have enough food to eat, the Open Philanthropy Project might give money to a group that helps grow more food or gives out free meals. Or, if there's a disease that's making lots of people sick, they might give money to scientists who are trying to find a cure.
Sometimes they also give money to charities that are trying new ways to help people. They check to make sure that these charities are doing a good job and really helping people, and then they give them the money they need to continue their work.
In short, the Open Philanthropy Project is a group of people who use their money to help others in need, making sure that the money goes to places where it can make the most difference.