Call for Code AI

Global Challenges

Some problems have waited long enough.


The Call for Code Global Challenge has been called the Nobel Prize for developers — the most prestigious recognition in technology built to serve humanity. Since 2018, developers from 190+ countries have competed to build solutions for the world's most urgent challenges. The strongest are recognized by the United Nations, deployed in real communities, and open-sourced for the world.


Below are eight years of Global Challenge winners — and the breakthroughs that defined them.

View global challenges

by year

Three students collaborate at a desk, looking at a laptop screen while referring to open textbooks in a library setting.
A person wearing glasses and braided hair looks intently at a laptop screen in a room with a purple background.
A person in a plaid shirt uses a tablet in a greenhouse with rows of green plants.
A person with short, reddish hair and glasses reaches into a pepper plant to harvest a bright red pepper into a basket.
Silhouetted figures working to contain a large, bright orange wildfire in a dark, rural setting.
A person wearing a white face mask looking out through a window pane, wearing a red shirt.
Firefighters in protective gear stand near a fire truck as flames engulf a forest on a hillside at night.
People wade through deep, flood-covered streets after a hurricane, moving toward the camera against a backdrop of foliage.