PayPal AI Hackathon Featured Online Build what’s next with PayPal and AI $67,500 in prizes Nov 12, 2026 03:00 PM EST to submit 28695 participants
Cal Hacks 13.0 San Francisco, CA, USA This year's Cal Hacks is presented by Anthropic, Annapurna Labs, Spacetime, and Hyphenate! Together we'll assemble in SF for a weekend of hacking, friendship, and crazy ideas. $204,408 in prizes Oct 23 – 25, 2026 1917 participants
OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners announced 46665 participants
UC Berkeley AI Hackathon 2026 Berkeley, CA, USA Come join us at the world's largest AI Hackathon hosted by the team behind Cal Hacks! $96,700 in prizes Jun 20 – 21, 2026 1082 participants
DiamondHacks 2026 San Diego, CA, USA San Diego's Largest Hackathon $25,710 in prizes Apr 4 – 5, 2026 366 participants
DiamondHacks 2025 San Diego, CA, USA San Diego's Fastest Growing Hackathon $2,853 in prizes Apr 5 – 6, 2025 302 participants