OpenAI Build Week Online Join a global week of building with Codex $100,000 in prizes Winners announced 46672 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
Hacktech by Caltech 2026 Pasadena, CA, USA Not everything needs to be flashy - just make it work. $72,900 in prizes Apr 24 – 26, 2026 198 participants
