Cal Hacks 12.0 San Francisco, CA, USA This year's Cal Hacks is co-hosted by Claude, Fetch AI, AppLovin, and Amazon's Annapurna Labs! Together we'll assemble in SF for a weekend of hacking, friendship, and crazy ideas. $58,100 in prizes Oct 24 – 26, 2025 2163 participants
The Climate Change-Makers Challenge: 2023 Online Join youth from across the world in this three-week challenge to create solutions for our climate crisis! $CAD 3,000 in prizes Winners announced 350 participants
